Effects of Urbanization on Bothrops jararaca Populations in Sao Paulo Municipality, Southeastern Brazil

dc.contributor.authorSiqueira, L. H. C.
dc.contributor.authorMarques, O. A.
dc.contributor.institutionInst Butantan
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.abstractQuantitative and qualitative alterations in the environment may have serious ecological consequences for populations of native species. Isolated forest fragments, such as those surrounded by highly urbanized areas, may function similarly to oceanic islands with differences in species diversity compared to mainland areas. These differences may include changes in prey availability and predator pressure, with consequent effects on growth and size of species that interact with those prey and predators. Here, we investigate body size, prey availability, and predation pressure in populations of Bothrops jararaca in two forest fragments within an urban environment in southeastern Brazil (a completely isolated, small forest fragment and a large, well-connected forest fragment). While we found no differences in mean body size or stoutness between the two populations, we did find larger specimens in the small isolated fragment. Prey availability and predator pressure also were significantly lower in the small isolated fragment. The urban environment significantly changes the population ecology between the two locations. These results suggest that lower food availability in the isolated fragment did not decrease the growth rate of B. jararaca, but the low predator pressure increased longevity, resulting in a higher proportion of large snakes in this population.en
dc.description.affiliationInst Butantan, Lab Ecol & Evolucao, Sao Paulo, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Sao Jose Do Rio Preto, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Sao Jose Do Rio Preto, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdFAPESP: 2014/11909-2
dc.identifier.citationJournal Of Herpetology. St Louis: Soc Study Amphibians Reptiles, v. 52, n. 3, p. 299-306, 2018.
dc.publisherSoc Study Amphibians Reptiles
dc.relation.ispartofJournal Of Herpetology
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleEffects of Urbanization on Bothrops jararaca Populations in Sao Paulo Municipality, Southeastern Brazilen
dcterms.rightsHolderSoc Study Amphibians Reptiles