Nesting Ecology and Nest Predation of Phrynops geoffroanus (Testudines, Chelidae) in the Guaporé River of the Brazilian and Bolivian Amazon

Schneider, Larissa; Ferrara, Camila R.; Vogt, Richard C.; Guilhon, Alessandro Valdez

doi:10.2744/1071-8443-10.2.206

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…Hole nests are generally shallow scrapes, underground burrows or cavities with an expanded chamber containing eggs at the end dug by females, or existing burrows or crevices selected by females. Hole nests have been observed in the tuatara ( Sphenodon guntheri ) [55], snakes [56,57], some crocodilians [58,59], and many lizards [60–62] and turtles [63–65]. The structure of hole nests is similar in tuatara, lizards and snakes, consisting of a tunnel leading to the egg chambers [55,56,62].…”

Section: Nesting Behaviour and Nest Design Of Reptilesmentioning

confidence: 99%

Can nesting behaviour allow reptiles to adapt to climate change?

Sun

et al. 2023

Phil. Trans. R. Soc. B

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A range of abiotic parameters within a reptile nest influence the viability and attributes (including sex, behaviour and body size) of hatchlings that emerge from that nest. As a result of that sensitivity, a reproducing female can manipulate the phenotypic attributes of her offspring by laying her eggs at times and in places that provide specific conditions. Nesting reptiles shift their behaviour in terms of timing of oviposition, nest location and depth of eggs beneath the soil surface across spatial and temporal gradients. Those maternal manipulations affect mean values and variances of both temperature and soil moisture, and may modify the vulnerability of embryos to threats such as predation and parasitism. By altering thermal and hydric conditions in reptile nests, climate change has the potential to dramatically modify the developmental trajectories and survival rates of embryos, and the phenotypes of hatchlings. Reproducing females buffer such effects by modifying the timing, location and structure of nests in ways that enhance offspring viability. Nonetheless, our understanding of nesting behaviours in response to climate change remains limited in reptiles. Priority topics for future studies include documenting climate-induced changes in the nest environment, the degree to which maternal behavioural shifts can mitigate climate-related deleterious impacts on offspring development, and ecological and evolutionary consequences of maternal nesting responses to climate change. This article is part of the theme issue ‘The evolutionary ecology of nests: a cross-taxon approach’.

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Section: Nesting Behaviour and Nest Design Of Reptilesmentioning

confidence: 99%

Can nesting behaviour allow reptiles to adapt to climate change?

Sun

et al. 2023

Phil. Trans. R. Soc. B

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“…O cágado P. geoffroanus não possui importância econômica, pois não é consumido com regularidade pelo homem, devido a carne por vezes causar reações alérgicas. Mas alguns ribeirinhos da Bacia do Rio Amazonas, ocasionalmente, alimentam-se desta espécie (VOGT 2008;SCHNEIDER et al, 2011). Apesar de não ser frequentemente predada pelo homem esta espécie tem sido afetada negativamente por mudanças em seu habitat natural.…”

Section: Justificativaunclassified

“…Ao longo do Rio Guaporé, por exemplo, o desmatamento para criação de gado, além de modificar o nicho ecológico da espécie P. geoffroanus, interfere na reprodução, uma vez que por ação mecânica o gado destrói seus ninhos e altera seu habitat de nidificação. Além disso, o desmatamento também provoca mudanças na oferta de alimentos da região, o que pressiona os organismos a buscar novas alternativas, como o lagarto Tupinambis teguxin que aumentou a predação aos ovos de P. geoffroanus (SCHNEIDER et al, 2011). Em outras cidades brasileiras é a poluição a causa das alterações no ambiente utilizado pela espécie.…”

Section: Justificativaunclassified

Distributions of the endocrine cells in the gastrointestinal tract of nectarivorous and sanguivorous bats: A comparative immunocytochemical study

et al. 2009

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“…Previous studies have suggested that Phrynops geoffroanus comprises a complex of cryptic species [5,13,24,30,[32][33][34][35]. What are these cryptic species, where do they occur, and what are their phylogenetic relationships are, however, uncertain given the lack of sampling.…”

Section: Introductionmentioning

confidence: 99%

Four in One: Cryptic Diversity in Geoffroy’s Side-Necked Turtle Phrynops geoffroanus (Schweigger 1812) (Testudines: Pleurodira: Chelidae) in Brazil

et al. 2022

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Turtles are one of the most threatened groups of vertebrates, with about 60% of species classified at some level of extinction risk. Compounding this extinction crisis are cryptic species and species complexes that are evaluated under a single species epithet but harbor multiple species, each of which needs to be evaluated independently. The Phrynops geoffroanus species group is a classic example. Described first in 1812, it is currently thought to harbor multiple species. To test this hypothesis, we collected mitochondrial and nuclear genomic data, morphometric data, and distribution and associated biome information. We applied statistically rigorous species delimitation analyses, taxonomic hypotheses tests, and fully coalescent phylogenetic reconstruction methods, concluding that the Phrynops geoffroanus species complex comprises four geographically structured species/lineages that diverged during the Pleistocene and are currently geographically structured along the main South American river basins and biomes. These species/lineages show subtle and largely non-significant differences in shape but are characterized by differences in coloration and patterns of marks on the head and plastron. Our results contribute to the understanding of species diversity and diversification of biodiversity in South America and provide an important basis for the conservation of freshwater turtles.

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Nesting Ecology and Nest Predation of Phrynops geoffroanus (Testudines, Chelidae) in the Guaporé River of the Brazilian and Bolivian Amazon

Cited by 6 publications

References 11 publications

Can nesting behaviour allow reptiles to adapt to climate change?

Can nesting behaviour allow reptiles to adapt to climate change?

Distributions of the endocrine cells in the gastrointestinal tract of nectarivorous and sanguivorous bats: A comparative immunocytochemical study

Four in One: Cryptic Diversity in Geoffroy’s Side-Necked Turtle Phrynops geoffroanus (Schweigger 1812) (Testudines: Pleurodira: Chelidae) in Brazil

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