Estrutura populacional, uso do espaço e ecologia trófica de jacarés-de-papo-amarelo (Caiman latirostris) em paisagem silvicultural

Marques, Thiago S.

doi:10.11606/t.91.2013.tde-18112013-094841

Cited by 2 publications

(2 citation statements)

References 95 publications

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“…(), only 60% of A. mississippiensis females survive the first year, and females at classes II (50–139 cm) and III (140–179 cm), according to Ross & Godshalk, ) are in a 1:3 ratio, which was observed in the small population of Ca. latirostris in Brazil (Marques, ); however, these numbers may underestimate the real number of females according to Portelinha, Verdade & Piña ().…”

Section: Discussionmentioning

confidence: 99%

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Effects of climatic conditions on sex ratios in nests of broad‐snouted caiman

Simoncini

Cruz

Larriera³

et al. 2014

Journal of Zoology

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Caiman latirostris has temperature‐dependent sex determination and is potentially susceptible to environmental temperature fluctuations and, thus, to the global climate change phenomena. Considering the potential consequences of increasing temperatures for Ca. latirostris offspring, we examined the effects of climatic conditions on sex ratios produced by caimans in wild nests and in particular how climate variables affect nest temperature and the percentage of females produced. We also explored the potential consequences of a hypothetic 0.5 and 1.0°C increase in nest temperature on caiman populations. The proportion of females produced from nests in the wild varied among reproductive seasons, as mean nest temperatures varied between 27.1 and 33.9°C. However, after seven seasons the sex ratio biased toward females, and only during extreme events (strong El Niño Southern Oscillation event, La Niña) was there a reduction in the percentage of females produced in the wild. In the hypothetic scenarios of global warming, we predict a decrease of unisexual female nests, with nests containing both sexes or unisexual male nests becoming more frequent. Entire clutches might be lost if nest temperatures rise above 34.5°C for extended periods. However, it is possible that females modify their nesting timing and behavior to select thermally suitable nest environments.

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Section: Discussionmentioning

confidence: 99%

“…This was also observed for Ca. latirostris from the state of São Paulo in Brazil (Marques, ). Unfortunately, there are no data on Ca.…”

Section: Discussionmentioning

confidence: 99%

Effects of climatic conditions on sex ratios in nests of broad‐snouted caiman

Simoncini

Cruz

Larriera³

et al. 2014

Journal of Zoology

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Répteis da região do Campus Lagoa do Sino da Universidade Federal de São Carlos, Buri, sudeste do Brasil

Pedro¹,

Nehemy²

2021

Rev. Biol. Neotrop.

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Este estudo apresenta o levantamento de répteis da região do Campus Lagoa do Sino da Universidade Federal de São Carlos (UFSCar), compreendendo os municípios de Angatuba, Buri e Campina do Monte Alegre. Os registros provêm de dados secundários, obtidos na literatura, e de dados primários acumulados entre março de 2017 e setembro de 2019 através de busca ativa (BA), encontros ocasionais (EO), registros feitos por terceiros (RT) e armadilhas aquáticas do tipo covo (AC). Um total de 62 espécies foram registradas (38 através de dados primários), distribuídas entre as Ordens Crocodylia (1), Squamata (58) e Testudines (3). As espécies mais comuns foram as serpentes Boa constrictor, Dipsas mikanii e Crotalus durissus. A riqueza registrada até agora na área de estudo corresponde a 29,2% das 212 espécies de répteis conhecidas para o Estado de São Paulo, mas os estimadores de riqueza sugerem que esta riqueza pode ser ainda maior.

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Estrutura populacional, uso do espaço e ecologia trófica de jacarés-de-papo-amarelo (Caiman latirostris) em paisagem silvicultural

Cited by 2 publications

References 95 publications

Effects of climatic conditions on sex ratios in nests of broad‐snouted caiman

Effects of climatic conditions on sex ratios in nests of broad‐snouted caiman

Répteis da região do Campus Lagoa do Sino da Universidade Federal de São Carlos, Buri, sudeste do Brasil

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