Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-05-11T00:01:53Z No. of bitstreams: 1 AmandaTorresBorges_DISSERT.pdf: 1877687 bytes, checksum: b058a4ab09d1ebaaae5ddbe87c8c32b1 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-05-18T23:49:59Z (GMT) No. of bitstreams: 1 AmandaTorresBorges_DISSERT.pdf: 1877687 bytes, checksum: b058a4ab09d1ebaaae5ddbe87c8c32b1 (MD5) / Made available in DSpace on 2016-05-18T23:49:59Z (GMT). No. of bitstreams: 1 AmandaTorresBorges_DISSERT.pdf: 1877687 bytes, checksum: b058a4ab09d1ebaaae5ddbe87c8c32b1 (MD5) Previous issue date: 2015-03-27 / A fam?lia Centropomidae ? composta por tr?s g?neros, Centropomus, Lates e Psammoperca. Centropomus ? o grupo mais diversificado, apresentando seis esp?cies com ocorr?ncia no Oceano Atl?ntico Ocidental, C. undecimalis (Bloch, 1792), C. poeyi Ch?vez, 1961, C. parallelus Poey, 1860, C. mexicanus Bocourt, 1868, C. pectinatus Poey, 1860 e C. ensiferus Poey, 1860. Algumas destas esp?cies s?o consideradas cr?pticas, por apresentarem caracter?sticas morfol?gicas pouco resolutivas para fins de identifica??o. Apesar do grande interesse como recurso natural e para cultivo, aspectos sobre sua diversidade e padr?es cariot?picos s?o pouco conhecidos. Neste trabalho classifica??es morfol?gicas e compara??es de sequ?ncias mitocondriais 16S foram utilizadas para identifica??o das esp?cies do g?nero Centropomus com ocorr?ncia no Rio Grande do Norte, nordeste do Brasil. Duas esp?cies foram identificadas, C. undecimalis e C. mexicanus, que tiveram seus aspectos cromoss?micos analisados atrav?s de m?todos citogen?ticos cl?ssicos (colora??o convencional, bandamento C, Ag-RONs), colora??o com fluorocromos AT- e GC-espec?ficos, bandas de replica??o pela incorpora??o do an?logo de base 5?BrdU ( 5-bromo-2?-deoxiuridina) e mapeamento cromoss?mico in situ de sequ?ncias (TTAGGG)n e dos genes RNAr 18S e 5S. Ambas as esp?cies apresentaram 2n=48 cromossomos acroc?ntricos, com s?tios ribossomais (Ag-RON/DNAr 18S/Mitramicina+) no segundo par cromoss?mico, em posi??o telom?rica no bra?o longo de C. mexicanus) e intersticial em C. undecimalis. O par organizador nucleolar (par 2) se mostra um marcador citotaxon?mico resolutivo para estas duas esp?cies. Os dados gerados revelam uma menor diversidade de esp?cies de Centropomus do que se acreditava, sugerindo uma maior aten??o na identifica??o taxon?mica das esp?cies, tendo em vista otimizar a??es de explora??o comercial, conserva??o biol?gica e cultivo. / The Centropomidae family consists of three genera, Centropomus, Lates and Psammoperca. Centropomus is the most diverse group, with six Centropomus species occur in the Western Atlantic Ocean C. poeyi Ch?vez, 1961, C. parallelus Poey, 1860, C. mexicanus Bocourt, 1868, C. pectinatus Poey, 1860 and C. ensiferus Poey, 1860. Some of these species are considered cryptic, because of its morphological traits showed low resolution for identification purposes. Despite showing great interest as a natural resource and fish culture, aspects of their diversity and karyotypic patterns are poorly understood. In this work morphological identification and comparison of mitochondrial 16S gene sequence were used to identify the species of the genus Centropomus occurring in Rio Grande do Norte, northeastern Brazil. Two sepecies were identified, C. undecimalis and C. mexicanus, which had the chromosomal aspects analyzed, through Classical cytogenetic method analyzes (conventional staining, C-banding, Ag-NORs), fluorochrome staining AT- and GC-specific, replication bands by incorporating of the base analog 5-Bromo-2?-deoxyuridine (5-BrdU), in situ chromosomal mapping of (TTAGGG)n sequences and in situ chromosome mapping 18S and 5S rRNA genes. Both species show 2n=48 acrocentric chromosomes, with ribosomal sites (Ag-NOR/18S rDNA/ Mitramycin+) in second chromosomal pair, in telomeric position on the long arm in C. mexicanus and interstitial in C. undecimalis. The nuclear organization pair (pair 2) shown a resolutive cytotaxonomic marker for these two species. The generated data reveal a lower species diversity than previously believed, suggesting that greater attention should be paid in taxonomic identification of the species, in view of optimize commercial actions exploitation, biological conservation and cultivation.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-07-25T19:35:25Z No. of bitstreams: 1 AlannyChristinyCostaDeMelo_DISSERT.pdf: 4456971 bytes, checksum: 8caf70bc14125d0010bb4e21e9d3aa55 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-07-28T20:49:41Z (GMT) No. of bitstreams: 1 AlannyChristinyCostaDeMelo_DISSERT.pdf: 4456971 bytes, checksum: 8caf70bc14125d0010bb4e21e9d3aa55 (MD5) / Made available in DSpace on 2016-07-28T20:49:41Z (GMT). No. of bitstreams: 1 AlannyChristinyCostaDeMelo_DISSERT.pdf: 4456971 bytes, checksum: 8caf70bc14125d0010bb4e21e9d3aa55 (MD5) Previous issue date: 2016-03-04 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / N?s estudamos a Bacia Potiguar Cret?cea na margem Equatorial do Brasil para entender a geometria das grandes falhas e a influ?ncia da heterogeneidade crustal e o fabric estrutural preexistente na evolu??o da arquitetura interna bacia. Estudos anteriores apontaram que o rifte ? um meio graben assim?trico alongado de dire??o NE-SW. Para determinar o deslocamento m?ximo (Dm?x) e comprimento (L) dos principais segmentos de falha de borda do Rifte Potiguar foram usados s?smica 2D, dados de po?os e modelagem gravim?trica 3D. A modelagem gravim?trica 3D foi parametrizada com os dados de po?os e interpreta??es das se??es s?smicas. O grau de incerteza do modelo gravim?trico foi da ordem 10% aos dados s?smicos e de po?os. Atrav?s das curvas de crescimento de falhas foi poss?vel dividir as falhas de borda do rifte em quatro segmentos principais, os quais forneceram valores Dm?x/L da mesma ordem de grandeza. As curvas de crescimento de falhas sugerem que um mecanismo tect?nico uniforme regional teria influenciado o crescimento dos segmentos dessas falhas. As varia??es dos deslocamentos m?ximos ao longo dos segmentos de falha indicam que estes segmentos se desenvolveram de forma independente durante o in?cio do rifteamento e, posteriormente, foram unidos por liga??es rig?das e flex?veis. Este ?ltimo, chegou a formar uma rampa de al?vio entre as falhas de Baixa Grande e Carnaubais. Nos pontos de interliga??o entre falhas as taxas Dm?x / L s?o mais elevadas devido ? interfer?ncia do crescimento dos segmentos de falha adjacentes. A evolu??o do Rifte Potiguar foi dividida em cinco etapas com base nas rela??es Dm?x/L, que foram correlacionadas com as principais fases tect?nicas da separa??o entre a Am?rica do Sul e ?frica no Cret?ceo Inferior. / The discussion about rift evolution in the Brazilian Equatorial margin during the South America-Africa breakup in the Jurassic/Cretaceous has been focused in many researches. But rift evolution based on development and growth of faults has not been well explored. In this sense, we investigated the Cretaceous Potiguar Basin in the Equatorial margin of Brazil to understand the geometry of major faults and the influence of crustal heterogeneity and preexisting structural fabric in the evolution of the basin internal architecture. Previous studies pointed out that the rift is an asymmetrical half-graben elongated along the NE-SW direction. We used 2D seismic, well logs and 3D gravity modeling to analyze four major border fault segments and determine their maximum displacement (Dmax) and length (L) ratio in the Potiguar Rift. We constrained the 3D gravity modeling with well data and the interpretation of seismic sections. The difference of the fault displacement measured in the gravity model is in the order of 10% compared to seismic and well data. The fault-growth curves allowed us to divide the faulted rift border into four main fault segments, which provide roughly similar Dmax/L ratios. Fault-growth curves suggest that a regional uniform tectonic mechanism influenced growth of the rift fault segments. The variation of the displacements along the fault segments indicates that the fault segments were formed independently during rift initiation and were linked by hard and soft linkages. The latter formed relay ramps. In the interconnection zones the Dmax/L ratios are highest due to interference of fault segment motions. We divided the evolution of the Potiguar Rift into five stages based on these ratios and correlated them with the major tectonic stages of the breakup between South America and Africa in Early Cretaceous.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-03-21T13:09:14Z No. of bitstreams: 1 ClovisCoutinhoDaMottaNeto_TESE.pdf: 24405489 bytes, checksum: f4b763bedf2b803da39f795bc3d80ff3 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-03-23T15:58:48Z (GMT) No. of bitstreams: 1 ClovisCoutinhoDaMottaNeto_TESE.pdf: 24405489 bytes, checksum: f4b763bedf2b803da39f795bc3d80ff3 (MD5) / Made available in DSpace on 2018-03-23T15:58:48Z (GMT). No. of bitstreams: 1 ClovisCoutinhoDaMottaNeto_TESE.pdf: 24405489 bytes, checksum: f4b763bedf2b803da39f795bc3d80ff3 (MD5) Previous issue date: 2017-09-29 / O Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A S?rie Percomorpha ? maior divis?o entre os vertebrados, constituindo o maior e mais derivado clado de peixes tele?steos. Dentre suas Ordens, Perciformes e Labriformes constituem modelos adequados ? investiga??o do conservadorismo e diversifica??o cromoss?mica. Em Perciformes o conservadorismo cromoss?mico ? representado por cari?tipos basais com 2n=48 acroc?ntricos, extensivamente compartilhados por uma parcela consider?vel de esp?cies. As causas e extens?o do conservadorismo cariot?pico em v?rias fam?lias desta Ordem n?o s?o inteiramente claras. Diante da diversidade de esp?cies em Labriformes, aspectos mais detalhados de sua evolu??o cariot?pica ou mesmo status taxon?mico de algumas esp?cies merecem particular aten??o. Com vistas a contribuir com novas informa??es sobre essas quest?es foram implementadas an?lises cromoss?micas convencionais (colora??o convencional com Giemsa, bandamento C e Ag-RONs, fluocrocromos base-espec?ficos) e citomoleculares (hibridiza??o in situ com sondas DNAr 18S, DNAr 5S). Oito esp?cies dos g?neros Anisotremus e Haemulon da fam?lia Haemulidae (Perciformes) foram analisadas, incluindo amostras de diferentes ?reas do Atl?ntico, como modelo de evolu??o conservativa. Em 2 esp?cies do g?nero Bodianus da fam?lia Labridae (Labriformes), foram analisados tamb?m aspectos da evolu??o de sequ?ncias repetitivas particulares (DNAr 18S, DNAr 5S, Alu e Tol2) nos cromossomos por hibridiza??o com 5 metilcitosina (5mC). Adicionalmente, foram realizadas compara??es filogen?ticas, utilizando sequ?ncias de DNA mitocondrial (COI e 16S) e nuclear (Rodopsina) para verificar o status taxon?mico da esp?cie Bodianus insularis, end?mica das ilhas Meso-Atl?nticas. Todas as esp?cies de Haemulidae apresentaram 2n=48a, s?tios Ag-RONs simples e heterocromatina centrom?rica reduzida, al?m de consider?vel compartilhamento de s?tios de DNAr 5S e 18S, confirmando a ocorr?ncia de estase cariot?pica na fam?lia. Os padr?es cariot?picos das popula??es de A. virginicus e H. chrysargyreum entre o Caribe e Atl?ntico Sul n?o revelaram varia??es cromoss?micas decorrentes da barreira dos des?gues dos rios Amazonas/Orinoco. Em Bodianus, as an?lises identificaram uma not?vel regi?o descondensada em um par cromoss?mico subteloc?ntrico, denominada regi?o BOD. Entre suas caracter?sticas constitutivas e funcionais particulares, se mostram DAPI-, argentof?lica (Ag+), marcantemente hipometilada e saturada de elementos transpon?veis, sugerindo que a participa??o destes elementos m?veis pode ter contribu?do para sua g?nese e din?mica epigen?tica complexa. Quanto a esp?cie end?mica B. insularis, sua diverg?ncia gen?tica ? muito inferior ? apresentada por esp?cies diferenciadas sugerindo que embora represente um grupo geograficamente isolado, constitua uma sinon?mia de B. pulchellus. A diverg?ncia nos ritmos de diversifica??o cariot?pica entre Haemulidae e Labridae ? aqui discutida ? luz de caracter?sticas cariot?picas intr?nsecas que podem favorecer o tamponamento e a fixa??o de mudan?as cromoss?micas e aspectos biol?gicos das esp?cies que contribuem para as condi??es particulares de evolu??o cariot?pica desses dois grupos de peixes marinhos. / Percomorpha series is the largest division among vertebrates, constituting the largest and most derived clade of teleostean fishes. Among its Orders, Perciformes and Labriformes constitue adequated models for the investigation of conservatism and chromosomal diversification. In Perciformes the chromosomal conservatism is represented by basal karyotypes with 2n = 48 acrocentric, extensively shared by a considerable portion of species. The causes and extent of the karyotypic conservatism in various families of this Order are not entirely clear. In front of the diversity of species in Labriformes, more detailed aspects of its karyotype evolution or even the taxonomic status of some species deserve particular attention. In order to contribute with new information on these issues, it was implemented conventional chromosome analysis (conventional staining with Giemsa, C-banding and Ag- NORs, base-specific fluochromes) and cytomolecular (in situ hybridization with 18S rDNA, 5S rDNA) probes were implemented. Eight species of the genera Anisotremus and Haemulon of the family Haemulidae (Perciformes) were analyzed, including samples from different areas of the Atlantic, as a model of conservative evolution. In 2 species of the Bodianus genus Labridae (Labriformes), it was also analyzed aspects of the evolution of particular repetitive sequences (DNAr 18S, DNAr 5S, Alu and Tol2) in the chromosomes by hybridization with 5 methylcytosine (5mC). Additionally, phylogenetic comparisons were performed using mitochondrial (COI and 16S) and nuclear (Rhodopsin) DNA sequences to verify the taxonomic status of the Bodianus insularis species, endemic to the Meso-Atlantic islands. All Haemulidae species presented 2n = 48a, single Ag-NORs sites and reduced centromeric heterochromatin, besides considerable sharing of rDNA 5S and 18S sites, confirming the occurrence of karyotype stasis in the family. The karyotypic patterns of the populations of A. virginicus and H. chrysargyreum between the Caribbean and the South Atlantic did not reveal chromosomal variations due to the barrier of the discharges of the Amazonas / Orinoco rivers. In Bodianus, the analyzes identified a remarkable decondensed region in a subtelocentric chromosomal pair, denominated BOD region. Among its particular constitutive and functional characteristics, it is DAPI-, Argentof?lica (Ag +), markedly hypomethylated and saturated with transposable elements, suggesting that the participation of these mobile elements may have contributed to its genesis and complex epigenetic dynamics. In relation to the endemic species B. insularis its genetic divergence is much inferior to that presented by differentiated species suggesting that although it represents a geographically isolated group, it constitutes a synonym of B. pulchellus. The divergence in the rates of karyotype diversification between Haemulidae and Labridae is discussed here in the light of intrinsic karyotype characteristics that may favor the buffering and the fixation of chromosomal changes and biological aspects of the species that contributes to particular conditions of karyotype evolution of these two groups of marine fish.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-01-13T13:42:19Z No. of bitstreams: 1 LucianoDeFreitasBarrosNeto_DISSERT.pdf: 3853226 bytes, checksum: a8b44f7aabb6297968112b307e476ad8 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-01-25T16:17:38Z (GMT) No. of bitstreams: 1 LucianoDeFreitasBarrosNeto_DISSERT.pdf: 3853226 bytes, checksum: a8b44f7aabb6297968112b307e476ad8 (MD5) / Made available in DSpace on 2017-01-25T16:17:39Z (GMT). No. of bitstreams: 1 LucianoDeFreitasBarrosNeto_DISSERT.pdf: 3853226 bytes, checksum: a8b44f7aabb6297968112b307e476ad8 (MD5) Previous issue date: 2016-03-29 / O g?nero Parotocinclus compreende 29 esp?cies nominais v?lidas de pequenos cascudoshipoptopomat?neos amplamente distribu?dos na regi?o neotropical cisandina. Embora asubfam?lia Hypoptopomatinae seja monofil?tica, o g?nero foi reconhecido como umaassembleia polifil?tica. Na regi?o Nordeste do Brasil, que abrange quatro ecorregi?eshidrogr?ficas distintas, Parotocinclus apresenta uma alta riqueza de esp?cies, representadopor doze esp?cies descritas at? o momento, geralmente com distribui??o geogr?fica restrita.Dentre essas, P. cearensis, da bacia do rio Acara? no oeste do Estado do Cear?, foi descrita apartir do desmembramento da s?rie-tipo de P. spilosoma, da bacia do rio Para?ba do Norte, noEstado da Para?ba, tendo surgido algumas controv?rsias a respeito da validade da primeira.Em levantamentos ictiol?gicos recentes em diversas bacias das ecorregi?es do NordesteM?dio-Oriental e do S?o Francisco foram coletados alguns esp?cimes de Parotocinclussemelhantes ? P. cearensis, o que sugere que essa esp?cie possua uma ampla distribui??o noNordeste do Brasil, ou que se trata de um complexo de esp?cies. Para resolver essas incertezastaxon?micas foram feitas an?lises morfol?gicas e moleculares, que confirmaram a validade deP. cearensis e identificaram a presen?a de poss?veis novas esp?cies relacionadas. Assim, ?fornecida uma redescri??o de P. cearensis e P. spilosoma, e identificada a co-ocorr?ncia delinhagens em algumas bacias hidrogr?ficas, sugerindo um contato secund?rio.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-22T19:07:45Z No. of bitstreams: 1 DaviZalderMiguel_DISSERT.pdf: 1502899 bytes, checksum: 94c9394e8cd427632ad2ce016d4648df (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-03-06T22:44:11Z (GMT) No. of bitstreams: 1 DaviZalderMiguel_DISSERT.pdf: 1502899 bytes, checksum: 94c9394e8cd427632ad2ce016d4648df (MD5) / Made available in DSpace on 2017-03-06T22:44:11Z (GMT). No. of bitstreams: 1 DaviZalderMiguel_DISSERT.pdf: 1502899 bytes, checksum: 94c9394e8cd427632ad2ce016d4648df (MD5) Previous issue date: 2016-02-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A hibridiza??o interespec?fica tem sido identificada em diversos grupos animais, entre estes, de forma recorrente e destacadamente em peixes marinhos da fam?lia Chaetodontidae. O g?nero Chaetodon ? o mais diverso da fam?lia com cerca de 30 esp?cies capazes de produzir h?bridos vi?veis. Todas as caracter?sticas pertinentes a este fen?meno v?m sendo analisadas, por?m ainda s?o necess?rios mais dados sobre a quebra de barreiras reprodutivas neste g?nero. No presente trabalho foram comparadas sequ?ncias dos genes 12S, 16S, RAG2 e NADH de esp?cies do g?nero Chaetodon com h?bridos conhecidos, com o objetivo de aferir qual a dist?ncia gen?tica entre elas, bem como compara??es citogen?ticas por mapeamento cromoss?mico das regi?es de DNAr 18S e 5S das esp?cies C. striatus, C. capistratus e C. sedentarius, do Atl?ntico Sul e Caribe. Os resultados indicam que as esp?cies parentais, mesmo abrigando um alto n?vel de diverg?ncia gen?tica, mant?m o potencial de intercruzamento e produz h?bridos vi?veis. Um extremo conservadorismo cariot?pico inter e intra-espec?fico foi observado para as esp?cies. Apesar do longo tempo decorrido de diverg?ncia entre algumas esp?cies, o potencial reprodutivo interespec?fico, al?m de fatores ambientais e biol?gicos, pode ter sido favorecido pela extensa homogeneidade cariot?pica presente na fam?lia. / Interspecific hybridization has been identified in various animal groups, among these, on a recurring basis in marine fish, notably in the Chaetodontidae family. The Chaetodon is the most diverse gender in the family, with about 30 species able to produce viable hybrids. All relevant features of this phenomenon have been analyzed, but we still need more data about the break of reproductive barriers in this genre. In the present study were compared sequences of the 12S gene, 16S, rag2 and NADH of Chaetodon genus with produce known hybrids, in order to ascertain what the genetic distance between them and cytogenetic comparisons by chromosomal mapping of regions of rDNA 18S and 5S of C. striatus, C. sedentarius and C. capistratus, from South Atlantic and Caribbean. The results indicate that parental species, even having a high level of genetic divergence, maintains the potential intercross and are capable to produce viable hybrids. An extreme conservatism karyotype inter- and intraspecific was observed for the species. Despite the long interval of separation between some species, interspecific reproductive potential as well an environmental and biological factors may have been favored by extensive karyotype homogeneity present in the family.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-06-02T22:53:26Z No. of bitstreams: 1 AlexBarbosaDeMoraes_DISSERT.pdf: 11472761 bytes, checksum: 05ac565ee284b2e037a19753d9805360 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-06-09T21:50:42Z (GMT) No. of bitstreams: 1 AlexBarbosaDeMoraes_DISSERT.pdf: 11472761 bytes, checksum: 05ac565ee284b2e037a19753d9805360 (MD5) / Made available in DSpace on 2017-06-09T21:50:42Z (GMT). No. of bitstreams: 1 AlexBarbosaDeMoraes_DISSERT.pdf: 11472761 bytes, checksum: 05ac565ee284b2e037a19753d9805360 (MD5) Previous issue date: 2017-02-23 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / O estado do Rio Grande do Norte concentra grande atividade pesqueira, assim como de produ??o de camar?es cultivados. A introdu??o de esp?cies al?ctones para o cultivo pode proporcionar a invas?o dessas esp?cies em ambientes aqu?ticos naturais e promover a perda de biodiversidade nativa. A problem?tica se torna mais cr?tica quando as esp?cies invasoras apresentam alta similaridade morfol?gica com esp?cies nativas, aumentando a susceptibilidade das popula??es naturais aos impactos promovidos pela invas?o de esp?cies n?o-nativas. Esta disserta??o prop?e comparar, morfologica e morfometricamente, o camar?o ex?tico Litopenaeus vannamei com a esp?cie nativa brasileira, L. schmitti, atrav?s de an?lises sobre morfologia externa dos caracteres sexuais secund?rios e varia??o de forma do cefalot?rax. A avalia??o morfol?gica evidenciou que os caracteres sexuais secund?rios apresentaram diferen?as discern?veis entre os est?gios ontogen?ticos intra e interespecificamente, tanto em machos quanto em f?meas. Al?m disso, o estudo sobre o crescimento do petasma em rela??o ao comprimento do cefalot?rax evidenciou que essas estruturas apresentam rela??es de crescimento distintas entre as esp?cies e entre os grupos ontogen?ticos. Existe tamb?m uma diferen?a bem marcada sobre o tamanho da primeira matura??o entre as duas esp?cies mas n?o entre os grupos de L. vannamei de natureza e de viveiro. J? na avalia??o da forma do cefalot?rax foi evidenciada uma distin??o morfol?gica entre as esp?cies, mostrando uma varia??o geom?trica significante entre o cefalot?rax da esp?cie nativa e a n?o nativa, por?m em abordagem intraespec?fica n?o foi poss?vel distinguir os esp?cimes de L. vannamei cultivados daqueles aclimatados ao ambiente natural.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-06-02T22:53:27Z No. of bitstreams: 1 SavioArcanjoSantosNascimentoDeMoraes_DISSERT.pdf: 3382313 bytes, checksum: d29b0d639c0367f1cb819ebeb2afb377 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-06-09T22:09:38Z (GMT) No. of bitstreams: 1 SavioArcanjoSantosNascimentoDeMoraes_DISSERT.pdf: 3382313 bytes, checksum: d29b0d639c0367f1cb819ebeb2afb377 (MD5) / Made available in DSpace on 2017-06-09T22:09:38Z (GMT). No. of bitstreams: 1 SavioArcanjoSantosNascimentoDeMoraes_DISSERT.pdf: 3382313 bytes, checksum: d29b0d639c0367f1cb819ebeb2afb377 (MD5) Previous issue date: 2017-02-21 / Macrobrachium jelskii ? uma esp?cie de ampla distribui??o no nordeste brasileiro, e ocorrendo em toda Am?rica do Sul. Contudo, nenhum estudo acerca a filogeografia, varia??es morfol?gicas locais e variabilidade gen?tica das popula??es desta esp?cie foi efetuado. Esta esp?cie de camar?o, pode revelar informa??es importantes sobre o padr?o de dispers?o e vicariantes correlatos ? cen?rios de arranjos tect?nicos pret?ritos e outros eventos que possam ter influenciado a biogeografia dos taxa aqu?tico. Portanto, o presente trabalho tem como objetivo investigar a diversidade fenot?pica e molecular das popula??es do camar?o Macrobrachium jelskii, nas ecorregi?es Nordeste M?dio Oriental, Maranh?o Piau? e S?o Francisco, frente a influ?ncia de cen?rios pret?ritos e respostas ambientais locais. Este trabalho utilizou uma abordagem de Sistem?tica integrativa, a morfometria geom?trica multivariada, an?lises filogen?ticas e de estrutura??o gen?tica. A morfometria geom?trica, revelou dimorfismo sexual evidente, em que f?meas apresentaram cefalot?rax e abd?men mais estirados horizontalmente. Isto, possivelmente, favorece o desenvolvimento gonadal, vitelog?nese e armazenamento dos ovos. Abstra??o da forma dos tr?s planos corporais n?o demostrou um consenso acerca da estrutura??o das popula??es entre de M. jelskii no Nordeste Brasileiro. Tal fato corrobora com a baixa diversidade nucleot?dica e haplot?pica, em que foi relatado apenas um hapl?tipo compartilhado entre as popula??es das bacias. Assim, ratificando a possibilidade de introdu??o da esp?cie nos corpos d??gua do Nordeste pelo DNOCS. Em adi??o, os dados gen?ticos relataram a presen?a de ru?dos e picos duplos no eletroferograma, que representa co-amplifica??o de pseudogenes mitocondriais da regi?o Citocromo Oxidase I, pouco relatadas na literatura para o g?nero Macrobrachium. Este fato abre um precedente de desconfian?a para rela??es filogen?ticas e filogeogr?ficas publicadas, recentemente que n?o retratam isto. Sabendo que esta caracter?stica pode gerar uma superestima??o de linhagens evolutivas e, assim, conclus?es err?neas sobre eventos dispersivos, vicariantes ou de especia??o, se faz de suma import?ncia retratar os casos de pseudogenes e a utiliza??o de iniciadores espec?ficos para cada t?xon. / Macrobrachium jelskii is a widely distributed species in northeastern Brazil, occurring throughout South America. However, no studies on phylogeography, local morphological variations and genetic variability of the populations of this species were carried out. This prawn species can reveal important information on the dispersion pattern and related vicariates for scenarios of past tectonic arrangements and other events that have influenced the biogeography of the aquatic taxa. The aim of this manuscript is to investigate a phenotypic and molecular diversity of the prawn M. jelskii populations in the Mid-Northeast Caatinga, Maranho Piau? and S?o Francisco ecoregions, influenced by past scenarios and environmental local responses. This scientific article uses an approach of Integrative Systematics, a multivariate geometric morphometry, phylogenetic analyzes and genetic structuring. Geometric morphometry showed evident sexual dimorphism, in which females presented cephalothorax and abdomen more horizontally stretched. This possibly favors gonadal development, vitellogenesis and egg storage. Abstraction of the shape of the three body planes does not demonstrate a consensus on the structuring of the populations between M. jelskii in the Northeast of Brazil. This fact corroborates a low nucleotide and haplotype diversity, in which only one haplotype was shared among the populations of the basins. Thus, ratifying a possibility of introduction in the Northeast area by DNOCS. In addition, the genetic data reported a presence of noises and double peaks not electropherogram, which represents co-amplification of mitochondrial pseudogenes of the region Cytochrome Oxidase I, little reported in the literature for the genus Macrobrachium. This fact show a precedent of mistrust for published phylogenetic and phylogeographic relationships, which recently did not depict this. Knowing that this characteristic can generate an overestimation of evolutionary lineages and, thus, erroneous conclusions on dispersive, vicarious or speciation events, it is of importance to report the cases of pseudogenes and the use of specific molecular primers for each taxon.

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-07-17T13:30:07Z No. of bitstreams: 1 RhudsonHenriqueSantosFerreiraDaCruz_TESE.pdf: 16062303 bytes, checksum: 7dc390e502c31be3ece0a11ff7bcc13b (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-07-20T11:41:47Z (GMT) No. of bitstreams: 1 RhudsonHenriqueSantosFerreiraDaCruz_TESE.pdf: 16062303 bytes, checksum: 7dc390e502c31be3ece0a11ff7bcc13b (MD5) / Made available in DSpace on 2017-07-20T11:41:47Z (GMT). No. of bitstreams: 1 RhudsonHenriqueSantosFerreiraDaCruz_TESE.pdf: 16062303 bytes, checksum: 7dc390e502c31be3ece0a11ff7bcc13b (MD5) Previous issue date: 2017-03-31 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / O g?nero Cyathus Haller foi estabelecido em 1768, por?m estudos taxon?micos aprofundados envolvendo o grupo s? ocorreram ? partir de 1844. Nos anos seguintes foram propostas altera??es na classifica??o infragen?rica de Cyathus baseando-se principalmente na morfologia. Lloyd, em 1906, distribuiu as esp?cies em cinco grupos, e em 1975 Brodie ampliou para sete grupos. Com o avan?o dos estudos filogen?ticos, as classifica??es morfol?gicas foram testadas e uma nova subdivis?o em tr?s grupos foi proposta por Zhao e colaboradores, em 2007. Tendo como base as caracter?sticas morfol?gicas utilizadas nas duas ?ltimas classifica??es, ? not?vel a presen?a de caracteres morfol?gicos amb?guos e mal delimitados, o que torna a identifica??o em n?vel de esp?cie muitas vezes duvidosa. Assim, esta tese se prop?s a compreender as rela??es filogen?ticas dos fungos do g?nero Cyathus, e como estas rela??es refletem na caracteriza??o taxon?mica, atrav?s de an?lises morfol?gicas e moleculares abrangendo a maior parte das esp?cies tipo do grupo. Os esp?cimes analisados procedem de empr?stimo de cole??es de fungos nacionais (JPB, URM, UESC e UFRNFungos) e internacionais (BBH, BPI, PH, DAOM, K, MA-Fungi, PC e TNS). As an?lises morfol?gicas e moleculares foram realizadas no Brasil e no Jap?o: a morfologia seguiu a metodologia padr?o para o grupo, e a an?lise molecular foi realizada com base em protocolos dispon?veis na literatura ou indicados pelos fabricantes dos reagentes, com etapas adaptadas para o g?nero Cyathus, incluindo o desenho de primers espec?ficos. Novos caracteres morfol?gicos informativos foram definidos a partir da redescri??o de 50 tipos e 4 outras esp?cies. Todas as 81 esp?cies com nome em uso corrente foram discutidas. Pranchas de imagens, lista de nomes inv?lidos e lista de sin?nimos tamb?m s?o apresentadas. As an?lises filogen?ticas utilizando M?xima Parcim?nia e Bayesiana inclu?ram 36 esp?cies, sendo 25 delas enquadradas em alguma categoria de tipo nomenclatural. O monofiletismo de Cyathus foi confirmado com suporte m?ximo em ambos os testes, e os grupos infragen?ricos da ?ltima classifica??o baseada em dados moleculares se mantiveram inalterados, entretanto o clado striatum apresentou segrega??o em cinco grupos e dois subgrupos. A organiza??o filogen?tica est? suportada com base em caracteres morfol?gicos, e s?o apresentadas diagnoses para cada um dos agrupamentos bem como uma chave dicot?mica para a separa??o infragen?rica. / The genus Cyathus Haller was established in 1768, but in-depth taxonomic studies with the group only occurred after 1844. In the following years changes in the infrageneric classification of Cyathus were proposed, based mainly on morphology. In 1906 Lloyd distributed the species into five groups, and in 1975 Brodie expanded to seven groups. With the advances of phylogenetic studies, the morphological classifications were tested and a new subdividion into three groups was proposed by Zhao and collaborators in 2007. Based on the morphological characteristics used in the last two classifications, is remarkable the presence of ambiguous and poorly delimited morphological characters, which makes identification at species level often doubtful. Thus, this PhD thesis aimed to understand the phylogenetic relationships of the fungi in the genus Cyathus and how these relations reflect in the taxonomic characterization, through morphological and molecular analyzes covering most of the type species of the group. The specimens analyzed come from national (JPB, URM, UESC and UFRN-Fungos) and international fungal collections (BBH, BPI, PH, DAOM, K, MA-Fungi, PC and TNS). Morphological and molecular analyzes were performed in Brazil and Japan: the morphology followed the standard methodology for the group, and the molecular analysis was performed based on protocols available in the literature or indicated by the reagent manufacturers, with steps adapted for the genus Cyathus, including the design of specific primers. New informational morphological characters were defined from the description of 50 types and 4 other species. All 81 species with name in current use were discussed. Figure plates, list of invalid names and list of synonyms are also presented. The phylogenetic analyzes using Maximum Parsimony and Bayesian included 36 species, 25 of them being classified in some nomenclatural type category. The monophyletism of Cyathus was confirmed with maximum support in both tests, and the infrageneric groups of the last classification based on molecular data were unchanged, however the clade striatum showed segregation into five groups and two subgroups. All the phylogenetic organization is supported based on morphological characters and diagnoses are presented for each clusters as well as a dichotomous key for the infrageneric separation.

Made available in DSpace on 2014-12-17T14:08:32Z (GMT). No. of bitstreams: 1 MarcilioPR.pdf: 779455 bytes, checksum: 0cff6512b78d66eae1a828df6b9c8490 (MD5) Previous issue date: 2009-02-12 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / With the new discoveries of oil and gas, the exploration of fields in various geological basins, imports of other oils and the development of alternative fuels, more and more research labs have evaluated and characterized new types of petroleum and derivatives. Therefore the investment in new techniques and equipment in the samples analysis to determine their physical and chemical properties, their composition, possible contaminants, especification of products, among others, have multiplied in last years, so development of techniques for rapid and efficient characterization is extremely important for a better economic recovery of oil. Based on this context, this work has two main objectives. The first one is to characterize the oil by thermogravimetry coupled with mass spectrometry (TG-MS), and correlate these results with from other types of characterizations data previously informed. The second is to use the technique to develop a methodology to obtain the curve of evaluation of hydrogen sulfide gas in oil. Thus, four samples were analyzed by TG-MS, and X-ray fluorescence spectrometry (XRF). TG results can be used to indicate the nature of oil, its tendency in coke formation, temperatures of distillation and cracking, and other features. It was observed in MS evaluations the behavior of oil main compounds with temperature, the points where the volatilized certain fractions and the evaluation gas analysis of sulfide hydrogen that is compared with the evaluation curve obtained by Petrobras with another methodology / Com as novas descobertas de petr?leo e g?s, a explora??o de campos em v?rias bacias geol?gicas, a importa??o de outros ?leos e o desenvolvimento de combust?veis alternativos, cada vez mais os laborat?rios de pesquisa t?m avaliado e caracterizado novos tipos de petr?leo e derivados. Por conseq??ncia os investimentos em novas t?cnicas e equipamentos de an?lise para determina??o na amostra das suas propriedades f?sico-qu?micas, da sua composi??o, de poss?veis contaminantes, de especifica??o de produtos, entre outros, t?m se multiplicado nos ?ltimos anos, de modo que o desenvolvimento de t?cnicas r?pidas e eficientes de caracteriza??o ? extremamente importante para um melhor aproveitamento econ?mico do petr?leo. Com base neste contexto, este trabalho tem dois objetivos principais. O primeiro ? caracterizar o petr?leo atrav?s da an?lise termogravim?trica acoplada ? espectrometria de massas (TG-MS), e correlacionar esses resultados com dados de outros tipos de caracteriza??es previamente informados. O segundo ? utilizar a t?cnica para desenvolver uma metodologia para a obten??o da curva de evolu??o do g?s sulf?drico no petr?leo. Assim, quatro amostras foram analisadas por TG-MS e por espectrometria de fluoresc?ncia de raios X (FRX). Os resultados obtidos com a termogravimetria podem ser utilizados para indicar a natureza do petr?leo, sua tend?ncia ? forma??o de coque, temperaturas de destila??o e craqueamento, entre outras caracter?sticas. Nas curvas de evolu??o obtidas por espectrometria de massas se observam o comportamento dos principais constituintes do petr?leo em fun??o da temperatura, os cortes onde s?o volatilizadas determinadas fra??es e a gera??o do g?s sulf?drico, que ? comparada com a curva obtida pela Petrobr?s utilizando outra metodologia

Made available in DSpace on 2014-12-17T13:53:25Z (GMT). No. of bitstreams: 1 MariaESFS_DISSERT.pdf: 1543853 bytes, checksum: 6ecedac5804f98e8e3a7ea12041ea4f7 (MD5) Previous issue date: 2010-06-18 / The Federal Institution for Education, Science and Technology, in its historical path, has been living different changes. The transformations occurred along the way have been determined by coercive forces from the institutional environment, which has became more and more broad and complex throughout the time, obtaining diverse characteristics and new elements such as non institutional factors1 which started to contribute with the other changes. In this context, this work aims to study the isomorphic practices of the managers in the institutional changes process of the IFRN in 1998 and 2008, as of a theoretical coevolutionary perspective (CHILD; RODRIGUES; LEWIN; CARROL; VOLBERDA, 2003). This theory brings a new point of view for the organization analysis to the organizational studies, since it offers a non deterministic and non linear lection of the evolution process, which means, a coevolution. Thus, the organizations and their institutional and non institutional environment auto evolve, auto organize and auto reproduce. Therefore, the institutional and non institutional factors of the macro environment keep a continuous interdependence relationship with the organizations. For the means of this study, it is important to understand that is impossible to comprehend the object, the isomorphic practices, without considering that the previous institutional changes and its evolutions, its continuations and discontinuations, important in the coevolution process. As such, to call upon the institutional historical track is a fundamental aspect to materialize this study, for the recursive movement is indeed present in the coevolution. Another important point to make this research effective is that it is not possible to abdicate from the hologramatic view2 of this study, which considers the object, the isomorphic practices, part of the whole and this whole is also in the parts, therefore it is impossible to comprehend the object of study outside the context where it belongs. With this, as of the objective previously proposed, it is necessary to describe the characteristics of coevolution of the institutional changes related in 1998 and 2008; analyze the dynamic of the isomorphic mechanisms in its respective institutional change process; and describe the lessons learned which the isomorphic practices left to the IFRN, regarding its benefits and difficulties. All these transformations happened through coercive forces3 of the institutional environment. As of the Nineties, these forces became stronger, the environment became broader and more complex, with the emergency of new environmental factors. This study proposed to study the managing process and its practices, related to the micro environment, although it is required to articulate these actions, the demands and requirements from the macro environment. To make this research effective, semi structured interviews have been conducted with the managers who participated in both institutional change processes. In the results analysis, it has been possible to verify the particularity of each change, the one from 1998 with a strong normative action of the managers against coercive forces from the government for the search of recognition and the institutional legitimation and the one in 2008, which has been characterized by the normative action by managers in agreement with the coercive forces from the government, in favor of the government policy for the technological professional education. However, the results analysis it is possible to notice the evidence of a belonging feeling from the interviewed managers / O Instituto Federal de Educa??o, Ci?ncia e Tecnologia, em sua trajet?ria hist?rica, tem vivenciado diversas mudan?as. As transforma??es ocorridas ao longo do tempo foram determinadas por for?as coercitivas do ambiente institucional, que ao longo do tempo foi se tornando complexo e amplo, adquirindo caracter?sticas diversas e novos elementos como os fatores n?o-institucionais1 que passaram a contribui com as demais mudan?as. Nesse contexto, este trabalho objetiva estudar as pr?ticas isom?rficas dos gestores nos processos de mudan?as institucionais no IFRN nos per?odos de 1998 e 2008, partindo de uma perspectiva te?rica coevolutiva (CHILD; RODRIGUES; LEWIN; CARROL; VOLBERDA, 2003). Essa teoria traz para os estudos organizacionais uma nova ?tica de an?lise das organiza??es, pois oferece uma leitura n?o determinista e n?o linear do processo de evolu??o, significando uma co-evolu??o. Nesse sentido as organiza??es e seus ambientes institucionais e n?o institucionais se autoevoluem, se autoorganizam e se autoreproduzem. E, dessa forma, os fatores institucionais e os n?o-institucionais do ambiente macro mant?m uma rela??o de interdepend?ncia cont?nua com as organiza??es. Para fins desse estudo, se faz importante entender que ? imposs?vel compreender o objeto, as pr?ticas isom?rficas, sem considerar as mudan?as institucionais anteriores e suas evolu??es, suas continuidades e descontinuidades, importantes no processo coevolutivo. Para tanto, recorrer ? trajet?ria hist?rica institucional ? um aspecto fundamental para a concretiza??o do estudo, pois o movimento recursivo faz-se presente na coevolu??o. Outro aspecto ? que n?o se pode abdicar da vis?o de hologram?tica2, que considera o objeto, as pr?ticas isom?rficas, parte constituinte de um todo e que esse todo, tamb?m est? nas partes, sendo imposs?vel compreender o objeto, descolado do contexto do qual faz parte. Com esse entendimento, partindo do objetivo proposto, ? necess?rio, descrever as caracter?sticas de co-evolu??o das mudan?as institucionais referentes aos per?odos de 1998 e 2008; analisar a din?mica dos mecanismos isom?rficos nos respectivos processos de mudan?a institucional; e descrever o aprendizado que as pr?ticas isom?rficas deixaram para o IFRN. Todas essas transforma??es se deram por for?as coercitivas3 do ambiente institucional. A partir da d?cada de 90 essas for?as se intensificaram, o ambiente se tornou mais amplo e complexo, com a emerg?ncia de novos fatores ambientais. No entanto, prop?e-se estudar o processo de gest?o e suas pr?ticas, referentes ao ambiente micro, embora necessite articular essas a??es, ?s demandas e exig?ncias do ambiente macro. Para a efetiva??o da pesquisa foram feitas entrevistas semi-estruturadas com os gestores que participaram dos dois processos de mudan?as institucionais. Nas an?lises dos resultados foram constatadas as particularidades de cada mudan?a, a de 1998 com uma forte a??o normativa dos gestores contra as for?as coercitivas do Estado na busca do reconhecimento e legitimidade institucional e a de 2008, que se caracterizou pela a??o normativa dos gestores em conson?ncia com as for?as coercitivas do Estado, em favor da pol?tica do governo para a educa??o profissional tecnol?gica. Na an?lise dos resultados percebe-se a evid?ncia de um sentimento de pertencimento por parte dos gestores entrevistados