Ecologia e conservação de Peltocephalus dumerilianus (Testudines Podocnemididae) em Barcelos, Amazonas, Brasil
The present thesis analyses and discusses aspects related to ecology and conservation of Peltocephalus dumerilianus (Testudines Podocnemididae), within a geographic area that includes a representative zone of the Muncipality of Barcelos, Amazonas, Brazil. The localities of biological and ecologic...
| Autor principal: | De La Ossa Velásquez, Jaime León |
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| Grau: | Tese |
| Idioma: | por |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/11455 http://lattes.cnpq.br/1408483487252257 |
| Resumo: |
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The present thesis analyses and discusses aspects related to ecology and conservation of
Peltocephalus dumerilianus (Testudines Podocnemididae), within a geographic area that includes
a representative zone of the Muncipality of Barcelos, Amazonas, Brazil. The localities of
biological and ecological information collected includes two tributaries of the medium Rio
Negro: Itú and Cuimicurí rivers; Human use of the species was studied in the communities of
São Louis, Baturité, Daracuá and Tomar. The nutritional components of the diet during a annual
cycle were analyzed, from the digestive tract contents of individuals captured for consumption by
the people inhabitanting the study area. This species was found to be an opportunistic omnivore.
Data are also presented on the female reproductive cycle: annual ovarian cycle, egg laying in
nature, induced ovoposition, and laboratory incubation reaffirming sex thermo-dependence in this
species. Morphometric and mark and recapture data of the turtles captured during a two year
continuous study was used to study the population dynamics in the research area. Habitat use
was determined by a one year continuous telemetry study. Socioeconomic use was analyzed and
discussed, the surveys show a cultural tendency associated with the consumption of turtles in the
study area. All data combined indicate the population declination of turtles of greater historic
preference; consequently the increasing hunting and commercialization of P. dumerilianus
(bigheaded river turtle) is a dynamic process that demonstrates the related natural stock
exhaustion taking place today. |