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Previous issue date: 2008-11-28 / From October 2005 to October 2007, rodents and marsupials were captured at Pedra Branca State
Park, Rio de Janeiro, RJ. This research aimed to characterize the vegetation concerning the study
area; to check the existence of a correlation between mesoclimate and microclimate in relation to
the presence of parasites and hosts; to identify the dynamics of the hosts and parasites
population throughout the seasons and verify the stratification of the small rodents and
marsupials fauna as well as the ectoparasitarian fauna. Six spaces of capture were highlighted, in
different levels of height. Three types of traps were used, Sherman, Tomahowk and Francesinha,
with different baits distributed in five transects. A hundred and sixty mammals were captured, 96
specimens of marsupials and 64 of rodents from the following species: Akodon cursor,
Oligoryzomys nigripes, Rattus norvergicus, Rattus rattus, Guerlinguetus ingrami, Sphigurus
villosus, Didelphis aurita, Marmosops incanus, Micoureus paraguayanus, Metachirus
nudicaudatus, Monodelphis americana and Philander frenatus. It was possible to observe that in
hotter (July and August) and drier (December, January and February) months, the number of
animals captured is much lower. The vegetation present in the collection areas (in the six levels
researched) is composed by secondary vegetation in different stages of regeneration. The areas
placed in levels 150, 200, 300 and 400 m can be classified as areas at initial and medium stage of
regeneration, while, the areas situated in levels 500 and 600 m the classification is of areas at
medium to advanced stage of regeneration. The correlation between the environment (relative
humidity, temperature and pluviometric index) and the ectoparasites was only significant to the
ticks, showing that, the higher the temperature, the higher is the number of ticks. The dominant
species is D. aurita (35%). Three hundred and seventy specimens of ectoparasites were collected:
162 fleas, 105 ticks and 103 lice. The parasites found were: Siphonaptera: Adoratopsylla
(Adoratopsylla) antiquorum ronnai, Adoratopsylla (Tritopsylla) intermedia intermedia,
Polygenis (Polygenis) occidentalis occidentalis, Polygenis (Polygenis) rimatus, Polygenis
(Polygenis) steganus, Polygenis (Neopolygenis) atopus, Ctenocephalidae felis felis, Acari
(Ixodidae): Amblyomma geayi, Amblyomma longirostre, Amblyomma scutatum, Amblyomma
spp., Ixodes amarali, Ixodes auritulus, Ixodes didelphidis, Ixodes loricatus, Ixodes luciae, Ixodes
spp., Phthiraptera: Poliplax spinulosa, Hoplopleura sciuricola, Eutrichophilus minor and
Eutrichophilus cercolabes. The siphonapterus obtained the highest prevalence coefficient
(28,13%) and the highest abundance index (1,01 flea/host). The phthirapters presented the highest
mean intensity of parasitism (17,17 lice/host). The correlation between the numbers of rodents
captured and the levels was not significant (rs = 0,23, p = 0,6) and for the marsupials the
correlation was negative and also not significant (rs = -0,6, p = 0,2). Polygenis (P.) occidentalis
occidentalis was found at the highest frequency (20,8%) among the rodents and in relation to the
marsupials, Adoratopsylla (T.) intermedia intermedia was the most frequent (77,7%). E.
cercolabes presented the highest frequency (91,5%) among lice; among ticks the highest
frequency was of Ixodes loricatus. / No per?odo de outubro de 2005 at? outubro de 2007, foram capturados roedores e marsupiais no
Parque Estadual da Pedra Branca, Rio de Janeiro, RJ. Este trabalho objetivou caracterizar a
vegeta??o da ?rea de estudo; verificar se existe correla??o entre mesoclima e microclima com
rela??o ? presen?a de parasitos e hospedeiros; identificar a din?mica das popula??es de
hospedeiros e parasitos ao longo das esta??es do ano e verificar a estratifica??o da fauna de
pequenos roedores e marsupiais e da fauna ectoparasit?ria. Foram marcados seis pontos de
captura, em diferentes cotas. Utilizou-se tr?s tipos de armadilhas, Sherman. Tomahowk e
Francesinha, com diferentes iscas e dispostas em cinco transectos. Capturou-se 160 mam?feros,
sendo 96 esp?cimes de marsupiais, das esp?cies: Didelphis aurita, Marmosops incanus,
Micoureus paraguayanus, Metachirus nudicaudatus, Monodelphis americana e Philander
frenatus, e 64 de roedores, das esp?cies: Akodon cursor, Oligoryzomys nigripes, Rattus
norvergicus, Rattus rattus, Guerlinguetus ingrami, Sphigurus villosus,. A vegeta??o presente nas
?reas de coleta (nas seis cotas pesquisadas) ? composta por vegeta??o secund?ria em diferentes
est?gios de regenera??o. As ?reas situadas nas cotas 150, 200, 300 e 400 metros podem ser
classificadas como ?reas que est?o em est?gio de inicial a m?dio de regenera??o, enquanto, as
?reas situadas nas cotas 500 e 600 metros a classifica??o ? de ?reas em est?gio de m?dio a
avan?ado de regenera??o. A correla??o entre o ambiente (umidade relativa do ar, temperatura e
?ndice pluviom?trico) e os ectoparasitas s? foi significativa para os carrapatos, demonstrando que,
quanto maior a temperatura, maior ? o n?mero de carrapatos. Observou-se que nos meses de
julho e agosto (meses mais secos) e nos meses de dezembro, janeiro e fevereiro (mais quentes) o
n?mero de animais capturados ? muito baixo. A esp?cie dominante ? D. aurita (35%). Coletou-se
370 esp?cimes de ectoparasitas, sendo: 162 pulgas, 105 carrapatos e 103 piolhos. Os parasitos
encontrados foram: Siphonaptera: Adoratopsylla (Adoratopsylla) antiquorum ronnai,
Adoratopsylla (Tritopsylla) intermedia intermedia, Polygenis (Polygenis) occidentalis
occidentalis, Polygenis (Polygenis) rimatus, Polygenis (Polygenis) steganus, Polygenis
(Neopolygenis) atopus, Ctenocephalidae felis felis; Acari (Ixodidae): Amblyomma geayi,
Amblyomma longirostre, Amblyomma scutatum, Amblyomma spp., Ixodes amarali, Ixodes
auritulus, Ixodes didelphidis, Ixodes loricatus, Ixodes luciae, Ixodes spp.; Phthiraptera: Poliplax
spinulosa, Hoplopleura sciuricola, Eutrichophilus minor e Eutrichophilus cercolabes. As pulgas
obtiveram o maior coeficiente de preval?ncia (28,13%) e o maior ?ndice de abund?ncia (1,01
pulga/hospedeiro). Os piolhos apresentaram a maior intensidade m?dia de parasitismo (17,17
piolhos/hospedeiro). A correla??o entre o n?mero de roedores capturados e as cotas n?o foi
significativa (rs = 0,23, p = 0,6) e para os marsupiais a correla??o foi negativa e tamb?m n?o
significativa (rs = -0,6, p = 0,2). Polygenis (P.) occidentalis occidentalis foi encontrada com a
maior freq??ncia (20,8%) entre os roedores e em rela??o aos marsupiais, Adoratopsylla (T.)
intermedia intermedia foi a mais freq?ente (77,7%). E. cercolabes apresentou a maior freq??ncia
(91,5%) entre os piolhos; entre os carrapatos a maior freq??ncia foi de Ixodes loricatus.
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:tede/488 |
| Date | 28 November 2008 |
| Creators | Amaral, Heloiza Helena de Oliveira Morelli |
| Contributors | Carvalho, Acacio Geraldo de, Freire, Nicolau Mau?s Serra |
| Publisher | Universidade Federal Rural do Rio de Janeiro, Curso de P?s-Gradua??o em Ci?ncias Ambientais e Florestais, UFRRJ, Brasil, Ci?ncias Agr?rias |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ |
| Rights | info:eu-repo/semantics/openAccess |
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