Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-10-17T15:10:01Z No. of bitstreams: 1 2016 - Sergio Carvalho Moreira.pdf: 18299878 bytes, checksum: 0755537fc7d05720dfc365f593b70620 (MD5) / Made available in DSpace on 2016-10-17T15:10:01Z (GMT). No. of bitstreams: 1 2016 - Sergio Carvalho Moreira.pdf: 18299878 bytes, checksum: 0755537fc7d05720dfc365f593b70620 (MD5) Previous issue date: 2016-02-24 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / This study addressed the segmentation of the song of humpback whales based on the definition of the subunits. The humpback whale voalizations were identified and characterized in order to structurate the first data bank of sounds of marine mammals of the Southwestern Atlantic. It was noted the importance of these subunits because they have a degree of small variation, assisting in the identification of the species for the Autonomic Passive Acoustic Monitoring System (MAPA). Records of vocalizations of whales were conducted by the Humpback Whale Institute team (IBJ), between 2006 and 2013, in the region of Abrolhos, Bahia State, Brazil. They held seven readings of the subunits through the Raven 1.4 software, by evaluating: (1) High frequency (Hz); (2) Average power (dB); (3) Energy (dB); (4) Center frequency (Hz); (5) Maximum frequency (Hz); (6) Delta Time (s); and (7) Delta frequency (Hz). There were calculated the average, standard deviation, minimum and maximum values. Multivariate analysis of variance with post-hoc test values were performed where p>0.05 did not represent a significant change in the years. In the years 2006, 2007, 2009 and 2011 there was satisfactory quality to perform the analyzes, which corresponded to 14% of total recordings in 4:06:54 hours. The records analyzed were purchased in the months of highest occurrence of humpback. 862 subunits were identified and analyzed. The identified subunits were A, B and C. The subunit A: n= 156(18%), previously found in a feeding area in the northeast of Iceland (2011), Alaska (2012) and in the region of Abrolhos in all years studied. The B subunit: n= 205(24%), occurring in feeding areas of Iceland (2000) and Alaska (2012) and the breeding area in Hawaii (1991). In Abrolhos region they were recorded in all years studied. The C subunit: 501(51%) was previously recorded in the breeding areas of Madagascar (2009), Hawaii (1989 and 1991), Mexico (2006), Australia (2009) and New Caledonia (2010) and in the feeding area Antarctica (2010). Some subunits showed no significant differences in some of the studied years. The subunits are preserved over the years especially in following parameters: high frequency, center frequency, maximum frequency, delta time and the delta frequency. The parameter delta time has also shown more uniform average and standard deviation, indicating that this should be used as a differentiating character in the analysis of humpback sound emissions. The C subunit had a wide geographic distribution, mainly in the Southern Hemisphere. Comparison of subunits found in the literature shows that they are suitable bioacustic markers for humpback in the usage of MAPA methodology. The data obtained in this study will be used to start the first sound database for marine mammals in the South Atlantic, called SONOTECA, in partnership with the SISMMAM (Marine Mammals Sound and Monitoring Integrated System)/IBAMA. / Neste estudo foi abordada a segmenta??o da can??o de baleias jubarte com base na defini??o das subunidades. As emiss?es sonoras das jubarte foram identificadas e caracterizadas de modo a estruturar o primeiro banco de dados de sons de mam?feros marinhos do Atl?ntico Sul Ocidental. Constatou-se a import?ncia dessas subunidades por apresentarem um grau de varia??o pequeno, ajudando na identifica??o da esp?cie em sistemas de Monitoramento Ac?stico Passivo Aut?nomo (MAPA). Os registros das vocaliza??es das baleias foram realizados pela equipe do Instituto Baleia Jubarte (IBJ) de 2006 a 2013, na regi?o de Abrolhos, Bahia, Brasil. Foram realizadas sete leituras das subunidades atrav?s do software Raven 1.4, avaliando-se: (1) Alta da frequ?ncia (Hz); (2) M?dia da pot?ncia (dB); (3) Energia (dB); (4) Frequ?ncia central (Hz); (5) Frequ?ncia m?xima (Hz); (6) Delta do tempo (s); e (7) Delta da frequ?ncia (Hz). Foram calculados a m?dia, o desvio padr?o, o valor m?nimo, e o valor m?ximo. Realizadas an?lises multivariadas das vari?ncias com o valores do teste Post Hoc onde p>0,05 n?o representa varia??o significativa ao ano. Nos anos de 2006, 2007, 2009 e 2011 houve qualidade satisfat?ria para realizar as an?lises, o que correspondeu a 14% do total das grava??es, com 4:06:54h de grava??es. Os registros analisados foram adquiridos nos meses de maior ocorr?ncia de jubarte. 862 subunidades foram identificadas e analisadas. As subunidades identificadas foram A, B e C. A subunidade A (n = 156; 18%), anteriormente encontrada em uma ?rea de alimenta??o no nordeste da Isl?ndia (2011), no Alasca (2012) e na regi?o de Abrolhos, em todos anos estudados. A subunidade B (n = 205; 24%), com ocorr?ncia em ?reas de alimenta??o da Isl?ndia (2000) e no Alasca (2012) e na ?rea de reprodu??o no Hava? (1991) e na regi?o de Abrolhos foram registradas em todos anos pesquisados. A subunidade C (n = 501; 51%) foi anteriormente registrada nas ?reas de reprodu??o de Madagascar (2009), Hava? (1989 e 1991), M?xico (2006), Austr?lia (2009) e Nova Caled?nia (2010) e na ?rea de alimenta??o da Ant?rtica (2010). Algumas subunidades n?o apresentaram diferen?as significativas em alguns anos estudados. As subunidades s?o preservadas ao longo dos anos principalmente nos par?metros alta frequ?ncia, frequ?ncia central, frequ?ncia m?xima, delta de tempo e delta da frequ?ncia. O par?metro delta do tempo demostrou tamb?m a sua m?dia e desvio padr?o mais uniforme, indicando que este deve ser usado como car?ter diferenciador nas an?lises de emiss?es sonoras de jubarte. A subunidade C apresentou uma grande distribui??o geogr?fica principalmente no Hemisf?rio Sul. A compara??o das subunidades encontradas com as registrads na literatura demostra que elas s?o adequados marcadores bioac?sticos para a jubarte no uso de metodologia do MAPA. Os dados obtidos no presente estudo ser?o usados para iniciar o primeiro banco de dados de sons para mam?feros aqu?ticos no Atl?ntico Sul, denominado SONOTECA, em parceria com o SISISMMAM (Sistema Integrado de Som e Monitoramento de Mam?feros Marinhos) /IBAMA.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-10-20T10:49:41Z No. of bitstreams: 1 2016 - Mariana Borges Rodrigues.pdf: 10445208 bytes, checksum: 3b8788e9719ae12da12f01e329a82878 (MD5) / Made available in DSpace on 2016-10-20T10:49:41Z (GMT). No. of bitstreams: 1 2016 - Mariana Borges Rodrigues.pdf: 10445208 bytes, checksum: 3b8788e9719ae12da12f01e329a82878 (MD5) Previous issue date: 2016-02-19 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Coccidia are obligate intracellular parasites, classified in Subphylum Apicomplexa and order Eucoccidiorida, which has different stages in their life cycles. In Passeriformes, the coccidian species of Isospora Schneider, 1881 are the most common, being the family Thraupidae one of the major families, with 12 host species described. The aim of this study was to identify, characterize and quantify the coccidian parasites of Thraupidae in the Itatiaia National Park. Isospora ramphoceli Berto, Flausino, Luz, Ferreira, Lopes, 2010 was identified in ruby-crowned tanagers Tachyphonus coronatus (Vieillot, 1822), which became a new host, and the Itatiaia National Park a new location for this coccidian species. The intensity of infection in different hosts were high, which can be justified by frugivorous feeding habits that favoring the feco-oral transmission of coccidia and by the positive hosts inhabit in disturbed areas susciptible to the effects of forest edge. The oocysts were characterized as uniform in T. coronatus and morphologically and morphometrically similar to the original description in Ramphocelus bresilius dorsalis Sclater, 1855 on the island of Marambaia, RJ. The specificity of I. ramphoceli occurred at the family level, because T. coronatus and R. b. dorsalis are included in the Thraupidae family. / Os cocc?dios s?o parasitas intracelulares obrigat?rios, classificados no Subfilo Apicomplexa e ordem Eucoccidiorida, que tem fases diferentes em seus ciclos de vida. Em Passeriformes as esp?cies de Isospora Schneider, 1881 s?o as mais comuns, sendo a fam?lia Thraupidae uma das principais fam?lias-hospedeiras com 12 esp?cies descritas. O objetivo deste estudo foi identificar, caracterizar e quantificar os cocc?dios parasitos de Thraupidae do Parque Nacional do Itatiaia. Isospora ramphoceli Berto, Flausino, Luz, Ferreira, Lopes, 2010 foi identificada em ti?s-pretos Tachyphonus coronatus (Vieillot, 1822), o qual se tornou novo hospedeiro e o Parque Nacional do Itatiaia nova localidade para este cocc?dio. As intensidades de infec??o em diferentes hospedeiros positivos foram altas, o que pode ser justificado pelo h?bito alimentar frug?voro que favorece a transmiss?o feco-oral dos cocc?dios e por parte dos hospedeiros positivos habitarem em ?reas antropizadas submetidas aos efeitos de borda de mata. Os oocistos foram caracterizados como uniformes em T. coronatus e morfologicamente e morfometricamente semelhantes a descri??o original em Ramphocelus bresilius dorsalis Sclater, 1855 na Ilha da Marambaia, RJ. A especificidade de I. ramphoceli ocorreu em n?vel de fam?lia, pelo fato de T. coronatus e R. b. dorsalis estarem classificados entre os traup?deos.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-01-10T13:29:32Z No. of bitstreams: 1 2016 - Ralph Maturano Pinheiro.pdf: 4863275 bytes, checksum: 542ee848d51f8367ac92b718c42d15ec (MD5) / Made available in DSpace on 2017-01-10T13:29:32Z (GMT). No. of bitstreams: 1 2016 - Ralph Maturano Pinheiro.pdf: 4863275 bytes, checksum: 542ee848d51f8367ac92b718c42d15ec (MD5) Previous issue date: 2016-02-25 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / This study aimed at understanding issues involved in tick parasitism in wild birds of the Atlantic Rainforest. First, an inventory (in the years 2005-2006) was performed of tick species occurring in Passeriformes of a forest fragment located on private property (21?37? S, 43?21? W), in the municipality of Coronel Pacheco, in the state of Minas Gerais, Brazil. This study verified the occurrence of Amblyomma nodosum, Amblyomma calcaratum, Amblyomma parkeri and Amblyomma longirostre in larval and nymph stages and Amblyomma ovale in the larval stage in Passeriformes from the aforementioned locality. It was also observed that Amblyomma larvae are most abundant in birds during the dry season when compared with the rainy season. Prevalence rates and mean intensity among bird families also showed to be high during the dry season, coinciding with the lowest level of tick aggregation, according to the discrepancy index (D). Regarding bird families, those with higher parasitic intensities were Thraupidae (16.51 ? 31.4), Furnariidae (22.3 ? 23.4) and Thamnophilidae (10.1 ? 14), when considering both seasons. Regarding bird ecological and morphological data, higher intensities were observed for omnivorous and understory birds and for birds with greater weights and lengths. Second, an assessment of reports on ticks occurring in wild birds of the Brazilian Atlantic Rainforest was performed. With these reports, the compilation of data regarding feeding ecology and bird sizes was performed, to verify the possible association of these variables with parasitism by ticks. In total, nine tick species have been reported in Atlantic Rainforest birds, especially A. longirostre, A. nodosum, A. calcaratum and Amblyomma aureolatum, in immature stages. The Thraupidae, Thamnophilidae, Pirpidae and Furnariidae bird families have the highest number of occurrences, respectively. A. longirostre was the species with the broadest parasitism spectrum among bird families, mainly occurring in the Thraupidae, Thamnophilidae, Pipridae, Rhynchocyclidae, Dendrocolaptidae and Turdidae families. As for A. nodosum, the main bird families parasitized by this species are Thamnophilidae, Thraupidae and Conopophagidae. With regard to A. calcaratum, a higher incidence was observed in birds from the Thraupidae, Thamnophilidae and Conopophagidae families, while for A. aureolatum its prevalence among the families of parasitized birds remained evenly distributed. When foraging and dietary habits were considered, it was found that insectivorous birds are associated with parasitism by these four tick species. Only A. nodosum, had no observed association with frugivorous birds. A. nodosum and A. calcaratum species are associated with birds that frequent interior forests, while bird species that frequent forest borders are associated with all of the species mentioned. Overall, there was an association between small birds (up to 40 g and 40 cm) and the tick species mentioned. It was concluded that the location commonly shared by wild birds and hosts of ticks in adult stages is an important factor for the occurrence of parasitism. / O presente trabalho teve como objetivo compreender aspectos ecol?gicos envolvidos no parasitismo por carrapatos em aves silvestres da Mata Atl?ntica. No Cap?tulo I, foram estudados carrapatos de aves Passeriformes, coletados nos anos de 2005 e 2006, provenientes de um fragmento de mata localizado numa propriedade particular (21?37? S, 43?21? W), em Coronel Pacheco, Minas Gerais. Neste trabalho foi verificada a ocorr?ncia de Amblyomma nodosum, Amblyomma calcaratum, Amblyomma longirostre e Amblyomma parkeri nos est?gios de larva e ninfa e Amblyomma ovale no est?gio de larva. Tamb?m foi poss?vel verificar que larvas do g?nero Amblyomma s?o mais abundantes nas aves durante a esta??o seca do que na esta??o chuvosa, conforme observado pelos ?ndices de preval?ncia e intensidade m?dia entre as fam?lias de aves, coincidindo com o menor grau de agrega??o dos carrapatos na esta??o seca, segundo ?ndice de discrep?ncia (D). As fam?lias de aves com maiores intensidades de parasitismo foram Thraupidae (16.51 ? 31.4), Furnariidae (22.3 ? 23.4) e Thamnophilidae (10.1 ? 14), quando consideradas ambas as esta??es. Quanto aos dados ecol?gicos e morfol?gicos das aves, foram verificadas maiores intensidades para aquelas on?voras e de sub-bosque e com maiores pesos e comprimentos. No Cap?tulo II, foram compilados os relatos de carrapatos do g?nero Amblyomma que ocorrem em aves silvestres da Mata Atl?ntica no Brasil. Com esses relatos, foi montado banco de dados sobre ecologia e morfologia das aves para verificar a poss?vel associa??o destas vari?veis com o parasitismo por carrapatos. Ao todo, nove esp?cies de carrapatos j? foram relatadas em aves deste bioma, com destaque para A. longirostre, A. nodosum, Amblyomma aureolatum, A. calcaratum e A. parkeri nas fases imaturas. As fam?lias de aves Thraupidae, Thamnophilidae, Pipridae e Furnariidae s?o as com os maiores n?meros de ocorr?ncias, respectivamente. A. longirostre ? a esp?cie com maior espectro de parasitismo sobre as fam?lias de aves, ocorrendo principalmente nas fam?lias Thraupidae, Thamnophilidae, Pipridae, Rhynchocyclidae, Dendrocolaptidae e Turdidae. As principais fam?lias de aves parasitadas por A. nodosum s?o Thamnophilidae, Thraupidae e Conopophagidae. Para A. calcaratum, foi verificada maior ocorr?ncia em aves das fam?lias Thraupidae, Thamnophilidae e Conopophagidae, enquanto para A. aureolatum a preval?ncia entre as fam?lias de aves se manteve homogeneamente distribu?da. Quando considerados os h?bitos ecol?gicos, foi verificado que aves inset?voras est?o associadas com parasitismo destas esp?cies de carrapatos. Apenas para A. nodosum, n?o foi observada associa??o com aves frug?voras. As esp?cies A. nodosum e A. calcaratum est?o associados com aves que frequentam interior de mata, enquanto aquelas esp?cies de aves que frequentam borda de mata est?o associadas com todas as esp?cies citadas. De maneira geral, foi observada associa??o entre aves pequenas (at? 40 g e 40 cm) e as esp?cies de carrapatos citadas. Foi poss?vel concluir que o local, onde aves silvestres e hospedeiros das fases adultas de carrapatos compartilham ? fator importante para a ocorr?ncia de parasitismo. Palavras-chave: aves silvestres, carrapatos,

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-01-23T11:22:54Z No. of bitstreams: 1 2016 - Marcione Brito de Oliveira.pdf: 6197788 bytes, checksum: f0d079ae51992239875f6993c6b36ba6 (MD5) / Made available in DSpace on 2017-01-23T11:22:54Z (GMT). No. of bitstreams: 1 2016 - Marcione Brito de Oliveira.pdf: 6197788 bytes, checksum: f0d079ae51992239875f6993c6b36ba6 (MD5) Previous issue date: 2016-04-14 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The relationship between the chiropterofauna survey and the landscape mosaic was evaluated along the left bank of S?o Louren?o River (Fazenda Santa Lucia) in the northern Pantanal, MT, Brazil. Samples were collected during 15 nights distributed during the transition period between dry and flooding seasons (end of November to mid-December 2014). A second survey was carried out during the dry season (October 2015). Several vegetational formations were sampled, considering both open (pastures, fields with mounds) and forest areas (cambara and the palm Scheelea phalerata, Arecaceae, as dominant species), totaling 24 sites. Samples were collected by mist nets set at ground level among trails, clearings in the forest, grazing areas and savanna formations (fields with mounds). A total of 27 species within five families were recorded: Emballonuridae (one species), Phyllostomidae (11 genera and 16 species), Noctilionidae (one genus and two species), Molossidae (two genera and three species) and Vespertilionidae (two genera and five species), although species from almost all trophic categories were captured. The richest trophic group was the insectivores with 48% of the species. However, its capture was relatively rare in most study sites. The highest abundance was for the frugivorous trophic guild with 68.9% of the total (454 individuals). The group is widely distributed in the mosaic, may be due to the capture method (mist nets) and to the high representation of the fruit bats subfamily Stenodermatinae in the study region. The Phyllostomidae species, considered sensitive to habitat disturbances, were captured in some of these patches. Four large groups of areas were identified, when composition of species, trophic structure, as well as the foraging strategies were considered. Insectivores were more associated with sparse vegetation areas or open fields, tending to areas closer to water, such as rivers with bridges or artificial tanks (cattle water holes) and seasonally flooded vegetation such as cambara forest. Frugivorous had the highest capture rates in acuri forest, semi-deciduous forest physiognomy with understory dominated by palm trees "acuri" (S. phalerata), indicating shelter availability. Thus, species occurrence seems to be related to trophic habits and foraging strategy, and are primarily distributed according to the vegetation zones of the study region. / Foi realizado um levantamento da quiropterofauna e avaliadas as suas rela??es com o mosaico da paisagem na regi?o situada ? margem esquerda do rio S?o Louren?o (Fazenda Santa L?cia) no norte do Pantanal, MT. As coletas foram realizadas durante 15 noites distribu?das entre o per?odo de transi??o entre a seca e a cheia (final de novembro at? meados de dezembro de 2014). Uma segunda amostragem foi desenvolvida no per?odo da seca (outubro de 2015). Diversas forma??es foram amostradas, considerando ?reas abertas (pastagens, campos com murundus) e fechadas (cambarazais, acurizais), com um total de 24 s?tios avaliados. As coletas foram realizadas com redes de neblina (mist-nets). Essas foram armadas no n?vel do solo em trilhas, clareiras dentro da mata, ?reas de pastagem e forma??es de cerrado (campos com murundus). No total foram registradas 27 esp?cies de cinco fam?lias: Emballonuridae (uma esp?cie), Phyllostomidae (11 g?neros e 16 esp?cies), Noctilionidae (um g?nero e duas esp?cies), Molossidae (dois g?neros e tr?s esp?cies) e Vespertilionidae (com dois g?neros e cinco esp?cies). Embora as esp?cies de morcegos de quase todas as categorias tr?ficas tenham sido registradas, a maior representatividade foi de inset?voros com 48% das esp?cies capturadas. Contudo, sua abund?ncia mostrou-se relativamente rara na maioria dos s?tios avaliados. A maior abund?ncia foi da guilda tr?fica frug?voro com 68,9% do total (454 indiv?duos), sendo esta amplamente distribu?da no mosaico avaliado, o que pode ser devido ao m?todo de captura com redes de neblina e a elevada representatividade de morcegos frug?voros da subfam?lia Stenodermatinae na regi?o de estudo. Esp?cies de Phyllostomidae, consideradas sens?veis a perturba??es no habitat, foram capturadas em algumas dessas machas. Quando comparadas as similaridades entre as ?reas, foi observada uma separa??o em quatro grandes grupos, tanto quanto a composi??o de esp?cies quanto a estrutura tr?fica e modo de forrageio. A distribui??o observada para os inset?voros esteve mais associada a ?reas com vegeta??o esparsa ou campos abertos, com tend?ncia para ?reas mais pr?ximas aos locais com ?gua como rios com pontes ou tanques artificiais (?gua para o gado) e vegeta??o estacionalmente inund?vel como os cambarazais. Os frug?voros apresentaram as maiores taxas de captura em acurizais, fisionomia florestal semidec?dua com sub-bosque dominado pela palmeira ?acuri? (Scheelea phalerata, Arecaceae), indicando boa disponibilidade de abrigos sob a vegeta??o ou folhagem. Assim sendo, a distribui??o das esp?cies parece estar diretamente relacionada ao habito alimentar e ao modo de forrageio e est?o distribu?das principalmente de acordo com as zonas de vegeta??o da regi?o estudada.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-04T11:10:45Z No. of bitstreams: 1 2013 - Vin?cius da Rocha Miranda.pdf: 4210864 bytes, checksum: 3c37254eedb367413a77718eae172a75 (MD5) / Made available in DSpace on 2017-04-04T11:10:45Z (GMT). No. of bitstreams: 1 2013 - Vin?cius da Rocha Miranda.pdf: 4210864 bytes, checksum: 3c37254eedb367413a77718eae172a75 (MD5) Previous issue date: 2013-06-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Cold-water coral reefs are of great ecological importance, they can support a great diversity associated with. They can offer a sheltered, three-dimensional, micro-habitat to many species. Studies involving the Brazilian deep-sea coral reefs, and the fauna which composes it, are recent and still scarce. These reefs were studied only in terms of the species of coral which composes it and their distribution in our coast, as the benthic fauna which are associated with this environment. Two projects, CAP-BC and ECOPROF, coordinated by CENPES/PETROBRAS, surveyed the Campos Basin (located at the northeast of Rio de Janeiro) with the objective of studying this environment and the associated fauna. On each project samples of the reef-building corals were collected with a ROV, at depths from 245 to 1100m. Five species of coral were surveyed: Solenosmilia variabilis Duncan, 1873, Lophelia pertusa (Linnaeus, 1758), Enallopsammia rostrata (Portual?s, 1758), Madrepora oculata Linnaeus, 1758 and Errina sp.,and fixed in formalin 10% and sorted at the laboratory. Here in, we present the first, qualitative, results from the polychaetes found in association with the coral reefs in Campos BasinThe specie of Eunice prognatha McIntosh, 1885 were the most abundant, followed by Harmothoe gilchristi (Day, 1960) and Nicon maculata Kimberg, 1866. The majority of polychaetes were found associated to the coral S. variabilis, followed by E. profunda and L. pertusa, both M. oculata and Errina sp. were the corals with less associated polychaetes. Five new species of Polychaeta are reported: Harmothoe sp. (Polynoidae), Pholoides sp. (Sigalionidae), Leocratides sp. (Hesionidae), Euchone sp. (Sabellidae) and Ophryotrocha sp. (Dorvilleidae).Specimens identified as Glycerella magellanica (McIntosh, 1885), Harmothoe gilchristi (Day, 1960), Eunice gracilicirrata (Treadwell, 1922), Eunice prognatha McIntosh, 1885, Pionosyllis procera Hartman, 1965, Haplosyllis ohma (Imajima & Hartman, 1964) and Nicon maculata Kimberg, 1866, are new occurrence for the Brazilian coast. Two other species, Filogranula revizee Nogueira & Abbud, 2009 and Notopygos crinita Grube, 1855had their range of occurrence extended. This is the first study aiming on the polychaetes associated with deep sea corals in the Brazilian waters, further studies should be conducted to better understand the distribution of species described here in, as well as to better understand the polychaete assemblage associated with each species of coral. / Recifes de corais de profundidade possuem uma grande import?ncia ecol?gica, uma vez que podem abrigar uma grande diversidade de esp?cies associadas. Isso ? poss?vel gra?as ? sua conforma??o tridimensional que proporciona uma alta hetereogenidade espacial, criando um ambiente protegido para muitas esp?cies. No Brasil, estudos sobre corais. de profundidade, s?o escassos e recentes. Muitos destes se limitam a descrever as esp?cies de corais encontradas e a sua distribui??o pela costa brasileira assim como organismos bent?nicos associados a eles. Recentemente foram realizados dois projetos coordenados pela CENPES/PETROBRAS, CAP-BC e ECOPROF com objetivo de realizar um levantamento dos recifes de corais de profundidade, bem como das esp?cies associadas a estes, na regi?o da Bacia de Campos (noroeste do estado do Rio de Janeiro). Em cada um desses projetos foi utilizado um ROV para coletar amostras nas profundidades entre 300 e 1100 metros. Cinco esp?cies de corais formadores desse ecossistema foram coletadas: Solenosmilia variabilis Duncan, 1873, Lophelia pertusa (Linnaeus, 1758), Enallopsammia rostrata (Portual?s, 1758), Madrepora oculata Linnaeus, 1758 and Errina sp., cada amostra foi fixada em uma mistura tamponada de formalina (10%), para posterior triagem em laborat?rio. Aqui apresentamos o estudo dos poliquetas associados a estes corais na Bacia de Campos. A esp?cie Eunice prognatha McIntosh, 1885 foi a mais abundante, seguida por Harmothoe gilchristi (Day, 1960) e Nicon maculata Kimberg, 1866. O coral S. variabilis foi o que apresentou o maior n?mero de esp?cies associadas, seguida dos corais E. rostrata e L. pertusa, j? as esp?cies M. oculata e Errina sp. foram os corais com menos esp?cies de poliquetas encontrados. Foram reportadas cinco novas esp?cies de poliquetas Harmothoe sp. (Polynoidae), Pholoides sp. (Sigalionidae), Leocratides sp. (Hesionidae), Euchone sp. (Sabellidae), e Ophryotrocha sp. (Dorvilleidae). O total de oito esp?cies foram registradas pela primeira vez para a costa brasileira: Glycerella magellanica (McIntosh, 1885), Harmothoe gilchristi (Day, 1960), Eunice gracilicirrata (Treadwell, 1922), Eunice prognatha McIntosh, 1885, Pionosyllis procera Hartman, 1965, Haplosyllis ohma (Imajima & Hartman, 1964), e Nicon maculata Kimberg, 1866. Duas outras esp?cies, viii Filogranula revizee Nogueira & Abbud, 2009 e Notopygos crinita Grube, 1855, tiveram suas ?reas de ocorr?ncia ampliadas. Este ? o primeiro estudo focando nos poliquetas associados aos corais de profundidade da costa brasileira. Novos estudos devem ser realizados para melhor compreender a distribui??o das esp?cies descritas neste trabalho, assim como entender as poss?veis associa??es destas com as esp?cies de coral desse ecossistema

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-26T14:05:04Z No. of bitstreams: 1 2012 - Patricia Gon?alves Galv?o.pdf: 5289496 bytes, checksum: 8dcb41bc971793cc8b4cdf383401ade4 (MD5) / Made available in DSpace on 2017-04-26T14:05:05Z (GMT). No. of bitstreams: 1 2012 - Patricia Gon?alves Galv?o.pdf: 5289496 bytes, checksum: 8dcb41bc971793cc8b4cdf383401ade4 (MD5) Previous issue date: 2012-03-01 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The objective of this study was to evaluate the protein profile expression of G. diazotrophicus PAL5 and its defective mutant in the indole compound production (lao-) grown in the presence or absence of tryptophan through 2DE-PAGE technique. The spectrometric analysis allowed the identification of 24 differentially expressed proteins. The majority of the proteins down regulated in the wild type PAL5 cultivated with tryptophan as compared to the cultivation without the amino acid belonged to the category of transductional modification, protein turnover and chaperones. For the mutant lao- grown in the same conditions, the majority of the proteins that presented differential expression belonged to the category of production and conversion of energy. In addition, the majority of the protein differentially expressed in the mutant lao- as compared to the wild-type PAL5 strains belonged to carbohydrates metabolism and transport. On the other hand, no proteins related to the tryptophan biosynthesis were detected in any condition, possibly due to the low yield of the proteins during the spectrometric analysis. Furthermore, mutants lao- and nif- of G. diazotrophicus were used for inoculation of micropropagated sugarcane plants in order to determine the influence of auxins produced by the bacteria in the plant growth promotion in comparison with PAL5. The first experiment, carried out in hydroponic conditions for 10 days showed a significant inoculation effect of the wild type on plant shoot. The other experiment was conducted in a period of 120 days in pots containing sand:vermiculite substrate fertilized with 30 and 60 ppm with ammonium sulphate enriched with 15N. The plants were inoculated in vitro with the wild type and mutants lao- and nif-, and the results showed a visual difference in the roots inoculated with PAL5 that showed higher volume suggesting a higher number of secondary roots and root hairs. On the other hand, the plants inoculated with the lao- mutant were ticker and showed lower number of secondary roots and root hairs. The shoot biomass of plants inoculated with PAL5 was higher than those inoculated with the mutant strains for both N dose, however the difference was not significant. Plants grown with 60 kg N dose and inoculated with the mutants showed lower accumulation of dry shoot mass than plants inoculated with the wild type strain. In conclusion, the present study showed the occurrence of several differentially expressed proteins either in the wild type strain or in the mutant lao- grown in LGI-P with and without tryptophan. The role played by these proteins in the metabolism of the bacteria requires additional studies, including different growth conditions. In addition, the inoculation of micropropagated sugarcane plants suggested a hormonal effect of the bacteria mainly on the root development e consequently in the N use efficiency. However, the size of the pots may have limited the plant development, suggesting that new experiments should be carried out in more appropriated conditions to confirm the influence of the indol production and the BNF during the association of the G. diazotrophicus and sugarcane plants / Este estudo teve por objetivo avaliar o perfil de express?o de prote?nas de G. diazotrophicus PAL5 e seu mutante defectivo na produ??o de compostos ind?licos (lao-) cultivados na presen?a e aus?ncia de triptofano atrav?s da t?cnica de 2DE-PAGE. A an?lise por espectrometria de massa permitiu a identifica??o de 24 prote?nas diferencialmente expressas. A maioria das prote?nas com a express?o diminu?da em PAL5 cultivada em meio com triptofano em rela??o ao meio de cultivo sem esse amino?cido pertenceu ? categoria modifica??o p?s-traducional, turnover de prote?nas e chaperonas. No mutante lao- cultivado nas mesmas condi??es, a maioria das prote?nas que apresentaram express?o diferencial pertencia ? categoria produ??o e convers?o de energia. Em adi??o, a maioria das prote?nas que foram diferencialmente expressas no mutante lao- em compara??o com a estirpe selvagem PAL5 pertencia ? categoria metabolismo e transporte de carboidratos. Por outro lado, n?o foram observadas prote?nas relacionadas ? bioss?ntese de triptofano em nenhuma condi??o analisada possivelmente devido ao baixo rendimento das identifica??es por espectrometria. Al?m das an?lises dos perfis de prote?nas, os mutantes lao- e nif- de G. diazotrophicus foram inoculados em plantas de cana-de-a??car micropropagadas com o objetivo de determinar a influ?ncia das auxinas na promo??o do crescimento dessa cultura em compara??o com a estirpe selvagem PAL5. O primeiro experimento, conduzido em condi??es de hidroponia pelo per?odo de 10 dias, mostrou efeito significativo da inocula??o da estirpe selvagem na promo??o de crescimento da parte ?rea das plantas, enquanto que o mutante lao-, n?o diferiu estatisticamente do controle n?o inoculado. O outro experimento, foi conduzido por 120 dias em vasos com substrato areia:vermiculita contendo 30 ou 60 ppm de sulfato de am?nio enriquecido com 15N e as pl?ntulas foram inoculadas in vitro. Os resultados mostraram uma diferen?a visual nas ra?zes das plantas inoculadas com PAL5, que se mostraram mais volumosas, aparentando um n?mero mais elevado de ra?zes secund?rias e p?los radiculares. J? as plantas inoculadas com lao- apresentaram ra?zes mais grossas, com um n?mero muito reduzido de ramifica??es ou p?los radiculares. A biomassa seca da parte a?rea das plantas inoculadas com PAL5 foi superior ?quelas inoculadas com as estirpes mutantes para as duas doses de nitrog?nio, por?m essa diferen?a n?o foi significativa. N?o foram observadas evid?ncias de contribui??o da FBN, por?m as plantas inoculadas com PAL5 foram menos eficientes na recupera??o do N fertilizante. Em conclus?o, o presente estudo mostra a ocorr?ncia de diversas prote?nas diferencialmente expressas tanto na estirpe selvagem como em lao- quando crescidas na presen?a e aus?ncia do amino?cido triptofano. A defini??o do papel dessas prote?nas no metabolismo da bact?ria requer estudos adicionais, inclusive em diferentes condi??es de cultivo. Em adi??o, a inocula??o dessas bact?rias em plantas de cana-de-a??car mostrou o efeito hormonal da bact?ria no desenvolvimento das ra?zes e, por conseguinte na maior efici?ncia de uso do N aplicado. Entretanto, dado a limita??o de espa?o f?sico dos vasos para o desenvolvimento das plantas, sugere-se a realiza??o de novos experimentos, em condi??es mais apropriadas, para confirmar a influ?ncia da produ??o de ?ndoles e da FBN durante a associa??o da bact?ria com as plantas de cana-de-a??car.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-05-03T14:33:01Z No. of bitstreams: 1 2016 - Jo?o Kleber da Costa Fernandes.pdf: 3419179 bytes, checksum: 438592497d93b0e2004465d0aa5c057c (MD5) / Made available in DSpace on 2017-05-03T14:33:01Z (GMT). No. of bitstreams: 1 2016 - Jo?o Kleber da Costa Fernandes.pdf: 3419179 bytes, checksum: 438592497d93b0e2004465d0aa5c057c (MD5) Previous issue date: 2016-04-29 / Lauraceae Juss. is a pantropical and economically important plant family, consisting of 50 genera and approximately 3,000 species, mostly found in humid forests. Several species are important resource in the construction timber, spice, essential oil, and medicinal plants. Among the 22 genera of Lauraceae occurring in Brazil, Urbandodendron Mez. is a genus with three species found in Southeastern Brazil and in Bahia state. Due to the complexity of that group, several classification systems have been proposed to the family. The most recent system suggests the division of the Lauroidea subfamily into three tribes, based on inflorescence morphology and on characters of wood and bark anatomy. On the other hand, Urbanodendron has not been included in that classification, since there are no studies on wood anatomy for that genus up to date. This study aims to provide information that can support Lauraceae taxonomy by describing wood characters of Urbanodendron bahiense (Meisn.) and U. verrucosum (Ness) Mez., followed by a literature review on the wood anatomy of other 21 genera of Lauraceae. Wood samples of both species were collected with an increment borer and processed based on usual techniques of optical and scanning electron microscopy. In order to verify if environmental factors may affect wood structure, samples were collected in Lowland and Submontane Ombrophilous Dense Forest remnants located in two conservation units in Rio de Janeiro state, the Parque Natural Municipal do Curi? and the Reserva Biol?gica de Po?o das Antas. A Principal Coordinates Analysis (PCoA) was used to evaluate how wood anatomy characters may support an intrafamiliar diagnosis in Lauraceae. The comparative analysis between the wood anatomies of U. bahiense e U. verrucosum indicated a homogeneous wood structure for both species, as observed in the other genera of Lauraceae, showing the following wood anatomical characters: growth ring boundaries distinct; porosity diffuse, solitary vessels and radial multiplex of 2-4, circular to oval outline, exclusively simple perforation plates, alternate intervessel pits; septate fibre; axial parenchyma paratracheal vasicentric; uniseriate and multiseriate (2-3 cells) rays; presence of phenolic compounds, mucilage and oil cells. Both species differ only in the location and frequency of oil/mucilage cells. The PCoA showed that wood anatomical characters effectively supported the diagnosis of tribes Cryptocaryeae, Laureae and Perseeae. The structure of the secondary xylem in Urbanodendronhave characters which are common to genera Aniba, Licaria, Nectandra, Ocotea and Persea, all belonging to tribe Perseeae, suggesting the placement of Urbanodendron in that same tribe. There were no quantitative statistically significant differences between cell elements present in individuals from both forest remnants. / Lauraceae Juss. ? uma fam?lia de grande import?ncia econ?mica sendo empregada na culin?ria, na perfumaria e na ind?stria farmac?utica, na fabrica??o de papel, em marcenaria e constru??o civil. As esp?cies t?m distribui??o pantropical, ocorrem nas florestas tropicais e subtropicais, em ambientes ?midos. A fam?lia ? constitu?da por 50 g?neros e aproximadamente cerca de 3.000 esp?cies. No Brasil s?o encontrados 22 g?neros, dentre eles Urbandodendron Mez, constitu?do por tr?s esp?cies, cuja distribui??o est? restrita aos estados do Sudeste e Bahia. Diversas classifica??es foram propostas devido a complexidade do grupo. O sistema de classifica??o mais recente sugere a divis?o da subfam?lia Lauroidea em tr?s tribos baseada na morfologia da infloresc?ncia e na anatomia do lenho e da casca. No entanto, Urbanodendron n?o ? citado nesta classifica??o, devido aus?ncia de estudos sobre a anatomia do lenho para o g?nero, at? o momento. O presente estudo tem como objetivo fornecer subs?dios ? taxonomia de Lauraceae, por meio da descri??o das caracter?sticas do lenho de Urbanodendron bahiense (Meisn.) e U. verrucosum (Ness) Mez, e de uma revis?o sobre a anatomia do lenho de 21 g?neros pertencentes ? fam?lia. Al?m de avaliar se as varia??es ambientais encontradas em Floresta Ombr?fila Densa de terras baixas e submontana promovem mudan?as significativas na estrutura do lenho. As amostras foram coletadas atrav?s de m?todos n?o destrutivos e processadas de acordo com as t?cnicas usuais para observa??o do lenho em microscopia ?ptica e microscopia eletr?nica de varredura. Os indiv?duos provem de duas ?reas de estudo do estado do Rio de Janeiro: O Parque Natural Municipal do Curi? e a Reserva Biol?gica de Po?o das Antas. Para a revis?o foram feitos levantamentos em bases de dados e peri?dicos especializados. A an?lise de coordenadas principais (PCoA) foi utilizada para avaliar como os caracteres anat?micos do lenho podem auxiliar no diagn?stico infrafamiliar em Lauraceae A partir do estudo comparativo da anatomia do lenho de U. bahiense e U. verrucosum foi poss?vel verificar que o lenho apresenta uma estrutura homog?nea como os demais g?neros da fam?lia, que incluem: camadas de crescimento distintas; porosidade difusa, vasos solit?rios e m?ltiplos radiais de 2-4 c?lulas, placa de perfura??o exclusivamente simples e pontoa??es intervasculares alternas; fibras septadas; par?nquima axial paratraqueal vasic?ntrico; raios unisseriados e multisseriados (2-3 c?lulas), integrados por c?lulas procumbentes na por??o central e eretas ou quadradas nas margens; presen?a de subst?ncias fen?licas, c?lulas ole?feras/mucilaginosas associadas ao raio. As esp?cies estudadas diferiram apenas na localiza??o e frequ?ncia das c?lulas ole?feras/mucilaginosas. A an?lise de coordenadas principais mostrou que os caracteres anat?micos do lenho auxiliam no diagn?stico das tribos Cryptocaryeae, Laureae e Perseeae. A estrutura do xilema secund?rio de Urbanodendron apresenta caracteres comuns aos g?neros Aniba, Licaria, Nectandra, Ocotea e Persea que pertencem ? tribo Perseeae, sugerindo o posicionamento do g?nero estudado nessa mesma tribo. A an?lise quantitativa dos elementos celulares encontrados nos indiv?duos de ambas as esp?cies, das duas forma??es vegetais, n?o apresentou diferen?as estat?sticas

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-05-03T17:33:38Z No. of bitstreams: 1 2012 - Hermes Ribeiro Luz.pdf: 2629217 bytes, checksum: 8e75ef38df8d873d63a0480f410610a8 (MD5) / Made available in DSpace on 2017-05-03T17:33:38Z (GMT). No. of bitstreams: 1 2012 - Hermes Ribeiro Luz.pdf: 2629217 bytes, checksum: 8e75ef38df8d873d63a0480f410610a8 (MD5) Previous issue date: 2012-02-09 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / This study analyzes the prevalence and mean intensity of infestation of ticks on birds captured in ESEC-Pirapitinga (180 20?S e 450 17?WGr), in Tr?s Marias, Minas Gerais, Brazil. Of a total of 1.295 birds captured, distributed in nine orders, 28 families and 92 species, 165 (12.7%) individuals were parasitized by ticks. Of these 160 (97%) belonged to the order Passeriformes and only 5 (3%) belonged to the grouping of non-passerines. We identified five tick species: Amblyomma longirostre (n = 274) was the most common species followed by Amblyomma parvum (n = 43), Amblyomma nodosum (n = 39), Amblyomma ovale (n = 24) and Rhipicephalus sanguineus (n = 7). The average infestation was 2.7 ticks by bird. Only 16 (10%) birds were infected with more than 5 ticks, while 97 (58.8%), birds were infected with a single tick. Also present in this study, some new records of A. longirostre. A. parvum, A. nodosum, A. ovale and R. sanguineus parasitizing birdscn / No presente estudo analisamos a preval?ncia e intensidade m?dia de infesta??o de carrapatos em aves capturadas na ESEC-Pirapitinga (180 20?S e 450 17?WGr), no munic?pio de Tr?s Marias, Minas Gerais, Brasil. De um total de 1295 aves capturadas, distribu?das em 9 ordens, 28 fam?lias e 92 esp?cies, 165 (12,7%) indiv?duos estavam parasitados por carrapatos. Destes 160 (97%) pertencia a ordem Passeriformes e apenas 5 (3%) pertenciam ao grupamento dos n?o passeriformes. Foram identificadas 5 esp?cies de carrapatos: Amblyomma longirostre (n= 273) foi a esp?cie mais comum seguida por Amblyomma parvum (n=43), Amablyomma nodosum (n=39), Amblyomma ovale (n=24) e Rhipicephalus sanguineus (n=7). A infesta??o m?dia foi de 2,7 carrapatos por ave. Somente 16 (10%) aves estavam infestadas por mais que 5 carrapatos, enquanto que 97(58,8%), aves estavam infestadas por um ?nico carrapato. Tamb?m apresentamos, neste estudo, alguns registros novos de A. longirostre. A. parvum, A. nodosum, A. ovale e R. sanguineus parasitando diferentes esp?cies de aves

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-05-05T14:21:03Z No. of bitstreams: 1 2012 - Cleide Domingues Coelho.pdf: 19229976 bytes, checksum: 94c069047adceba0bbb1974c338db08e (MD5) / Made available in DSpace on 2017-05-05T14:21:03Z (GMT). No. of bitstreams: 1 2012 - Cleide Domingues Coelho.pdf: 19229976 bytes, checksum: 94c069047adceba0bbb1974c338db08e (MD5) Previous issue date: 2012-02-28 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Parasites can affect the physical condition, survival and reproduction of birds may be an important factor in the life history of the host, exerting strong pressure ecological and evolutionary. Among the most important parasites affecting passerine birds, Isospora species were included, and the oocysts counts were used for estimating infection in wild birds as well as essential for studies of prevalence, diagnosis and control of coccidiosis in birds from seizures of wild animals, and keeping under quarantine at Wild Animal Sorting Center and latter for the release. This study aimed to determine the circadian rhythm or periodicity in the elimination of oocysts of Isospora species in Passeriformes, and identify the species of parasite found and verify the effectiveness and prophylaxis of anticoccidial drugs during the quarantine period. In a total of 1393 fecal samples were collected from birds of the order Passeriformes belonging to different families and species, from the apprehensions of wild animals and sent to CETAS (Wild Animal Sorting Center)/IBAMA at Municipality of Serop?dica in the State of Rio de Janeiro. After a period of sporulation, the samples were subjected to centrifugal flotation technique with sucrose, quantified and the results expressed in OoPD (oocysts per defecation). The results showed that, regardless of the continent where the birds live, photoperiod is an important factor in maintaining the schedule for the elimination of oocysts of the genus Isospora. Birds of several families had an OoPD means, in relationship of shedding oocysts in the feces, the highest eliminations is in the afternoon. For control of coccidiosis in these birds, throughout the use of anticoccidial drugs were observed that the effectiveness may vary with the species of the parasite and the birds, because they have different feeding habits and behavior, which may influence the response to treatment / Os parasitos podem afetar a condi??o f?sica, sobreviv?ncia e reprodu??o das aves, podendo ser um importante fator na hist?ria de vida do hospedeiro, exercendo forte press?o ecol?gica e evolucion?ria. Dentre os parasitos mais importantes que afetam os Passeriformes podemos citar os cocc?dios do g?nero Isospora, e a estimativa da infec??o em p?ssaros silvestres ? essencial para os estudos de preval?ncia, diagn?stico e controle deste cocc?dio nas aves oriundas de apreens?es do tr?fico de animais silvestres, encaminhadas e mantidas sob regime de quarentena nos centros de triagem de animais silvestres e destinadas ? soltura. Este trabalho teve por objetivo, determinar o ritmo circadiano ou periodicidade na elimina??o de oocistos de Isospora spp. em Passeriformes, assim como identificar as esp?cies do parasito encontradas e verificar a efic?cia dos anticocc?dios na profilaxia durante o per?odo de quarentena. Foram coletadas 1393 amostras fecais de aves da ordem Passeriformes pertencentes ? diversas fam?lias e esp?cies, oriundas da apreens?es do tr?fico de animais silvestres e encaminhadas ao CETAS/IBAMA, Serop?dica, RJ. Ap?s um per?odo de esporula??o, as amostras foram submetidas a t?cnica de centr?fugo-flutua??o com sacarose, quantificadas e os resultados expressos em OoPD (oocistos por defeca??o). Os resultados demonstraram que independentemente do continente onde as aves habitam, o fotoper?odo ? um fator importante na manuten??o da periodicidade da elimina??o dos oocistos de Isospora spp. e os Passeriformes de diversas fam?lias apresentaram um valor m?dio de OoPD mais elevado no per?odo da tarde. Foi verificado o controle da coccidiose nestes p?ssaros atrav?s do uso de anticocc?dios e observou-se que a efic?cia pode variar de acordo com a esp?cie do parasito e dos p?ssaros, os quais apresentam h?bitos comportamentais e alimentares diversificados que podem influenciar na resposta ao tratamento.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-05-18T13:49:36Z No. of bitstreams: 1 2011 - Andr? Barbosa Vargas.pdf: 2899416 bytes, checksum: 591d199971aaae8acb1b26b67d4b22a3 (MD5) / Made available in DSpace on 2017-05-18T13:49:36Z (GMT). No. of bitstreams: 1 2011 - Andr? Barbosa Vargas.pdf: 2899416 bytes, checksum: 591d199971aaae8acb1b26b67d4b22a3 (MD5) Previous issue date: 2011-04-25 / Funda??o Carlos Chagas Filho de Amparo ? Pesquisa do Estado do RJ, FAPERJ, Brasil. / The region of Vale do Para?ba is part of the Atlantic Forest and presents a history of environmental degradation, like many other regions in Brazil, caused at first by wood extraction and coffee plantations, and later by other crops and cattle farming. Now, despite the remarkable headways in this biome?s biodiversity research, some groups still show little knowledge of the geographic scope and neglect the research when conducting management and conservation studies. This study?s greater objective was to assess the composition and abundance of ant species in different forest fragments in Vassouras, RJ, over the influence of environmental and structural attributes. the research was developed between march and april 2008. The ant fauna was analyzed through 620 litter samples of 1m2 each, submitted to the Winkler extractor for 48 hours. They were equally distributed in 31 forest fragments belonging to three different landscapes (A, B and C), creating a gradient of forest covering and altitude with different uses of the soil. 170 ant species were found, belonging to 10 subfamilies and 49 genera, with an average of 10 (? 3.3 of standard deviation) species by square meter. The average of species for fragment was 50 ? 9.2. The highest richness was found on landscape A with 133 species (187 estimated), followed by B with 122 spp. (160 estimated) and C with 100 (111 estimated). The largest composition and richness differences were found between landscapes A and C. Despite being fragmented, all three landscapes obtained a good representation of the ant fauna, showing distinct values for the biodiversity?s conservation. The results showed that more heterogeneous landscapes have greater richness and a more heterogeneous composition of species, although no significant relation to the size of the fragments was found and the ant fauna between landscapes. The results can still suggest that the differences found could be related to the succession state and the floristic composition of the forest fragments. / A regi?o do Vale do Para?ba, inserida no dom?nio da Mata Atl?ntica, apresenta como outras regi?es do Brasil um hist?rico comum de degrada??o ambiental, ocasionado em princ?pio pela explora??o madeireira, o ciclo do caf? e posteriormente por outras culturas agr?colas e a pecu?ria. Atualmente, apesar do not?vel avan?o das pesquisas sobre a biodiversidade neste Bioma, determinados grupos ainda apresentam conhecimento restrito em abrang?ncia geogr?fica ou mesmo s?o negligenciados em estudos de conserva??o e manejo. Neste sentido, o objetivo maior deste estudo foi avaliar a riqueza e composi??o em esp?cies de formigas sobre a influ?ncia de atributos ambientais e estruturais em fragmentos florestais de diferentes paisagens no munic?pio de Vassouras, RJ. O estudo foi realizado no per?odo de mar?o a abril de 2008. A fauna de formigas foi estudada atrav?s de 620 amostras de 1m2 de serapilheira, submetidas ao extrator de Winkler por 48 horas, distribu?das igualmente em 31 fragmentos florestais, inseridos em tr?s paisagens (A, B e C), compondo um gradiente de cobertura florestal e altitude com distintos usos do solo. Foram obtidas 170 esp?cies de formigas distribu?das em 10 subfam?lias e 49 g?neros, com m?dia de 10 (? 3,3 de desvio padr?o) esp?cies por metro quadrado. A m?dia de esp?cies por fragmentos foi de 50 ? 9,2. A maior riqueza foi registrada na paisagem A com 133 esp?cies, sendo 187 estimadas, seguida da paisagem B com 122 spp., sendo 160 estimadas e C com 100 sendo 111 estimadas. As maiores diferen?as tanto para a riqueza quanto para a composi??o foram apontadas entre as paisagens A e C. Apesar de fragmentadas as paisagens estudadas tiveram boa representatividade da fauna de formigas, demonstrando valores distintos para a conserva??o da biodiversidade. Os resultados mostraram que paisagens mais heterog?neas possuem maior riqueza e sua composi??o em esp?cies ? mais heterog?nea. Embora n?o tenha sido encontrada rela??o significativa com o tamanho dos fragmentos a fauna de formigas variou entre as paisagens. Os resultados permitem ainda sugerir que tais diferen?as podem estar ainda relacionadas ao estado de sucess?o e a composi??o flor?stica dos fragmentos florestais.