Document Detail


Habitat use, size structure and sex ratio of the spot-legged turtle, Rhinoclemmys punctularia punctularia (Testudines: Geoemydidae), in Algodoal-Maiandeua Island, Pará, Brazil.
MedLine Citation:
PMID:  22458235     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
Rhinoclemmys punctularia punctularia is a semi-aquatic chelonian found in Northern South America. We analyzed the habitat use, size structure and sex ratio of the species on Algodoal-Maiandeua Island, a protected area on the Northeastern coast of the Brazilian state of Pará. Four distinct habitats (coastal plain lake, flooded forest "igapó", interdunal lakes, and tidal channels) were surveyed during the rainy (March and April) and dry (August and September) seasons of 2009, using hoop traps. For the analysis of population structure, additional data were taken in March and August, 2008. A total of 169 individuals were captured in flooded forest (igapó), lakes of the coastal plain and, occasionally, in temporary pools. Capture rates were highest in the coastal plain lake, possibly due to the greater availability of the fruits that form part of the diet of R. p. punctularia. Of the physical-chemical variables measured, salinity appeared to be the only factor to have a significant negative effect on capture rates. The sex ratio was only slightly biased to females, and did not vary between habitats or seasons. Straight carapace length was significantly larger in females, but did not vary between habitats. Overall, the evidence indicates that both biotic and abiotic factors like food availability, low current and salinity, influence the habitats selection and use by R. p. punctularia on Algodoal-Maiandeua Island.
Authors:
Manoela Wariss; Victoria Judith Isaac; Juarez Carlos Brito Pezzuti
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Revista de biología tropical     Volume:  60     ISSN:  0034-7744     ISO Abbreviation:  Rev. Biol. Trop.     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-03-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404267     Medline TA:  Rev Biol Trop     Country:  Costa Rica    
Other Details:
Languages:  eng     Pagination:  413-24     Citation Subset:  IM    
Affiliation:
Núcleo de Altos Estudos Amazônicos, Sala 01, Setor Profissional, Universidade Federal do Pará, Campus Universitário do Guamá, Rua Augusto Corrêa, no 1 - CEP: 66.075-110, Belém, Pará, Brasil. manuwariss@yahoo.com.br
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