Radiocarbon dating and stable isotopes analyses of Caiman latirostris (Daudin, 1801) (Crocodylia, Alligatoridae) from the late Pleistocene of Northeastern Brazil, with comments on spatial distribution of the species

França, Lucas de Melo; Fortier, Daniel; Bocchiglieri, Adriana; Dantas, Mário André Trindade; Liparini, Alexandre; Cherkinsky, Alexander; Ribeiro, Adauto de Souza

doi:10.1016/j.quaint.2014.06.046

Cited by 7 publications

(9 citation statements)

References 25 publications

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“…Another carnivore found in Sergipe was Caiman latirostris (δ 13 C = −3.01 ‰, δ 18 O = 31.40 ‰; França et al , 2014b), which was more specialist ( B A = 0.27) than S. populator , but our analyses allow us to suggest that it could feed on a variety of taxa, mainly on N. platensis (44 %), as well, in E. (A.)…”

Section: Resultsmentioning

confidence: 73%

“…In addition to the isotopic data of meso-megaherbivores from Poço Redondo, Sergipe, we generated isotopic data of carbon and oxygen for Pachyarmatherium brasiliense and Smilodon populator , and included published isotopic data for Caiman latirostris (França et al , 2014b), to suggest a trophic web in this assemblage (Figure 5).…”

Section: Resultsmentioning

confidence: 99%

“…In order to complement our results, and refine the determination of the isotopic diet of Sergipe taxa, we included previously published isotopic data (δ 13 C and δ 18 O, of which most have 14 C AMS datings; Table S1) and 14 C AMS and ESR datings of E. laurillardi , N. platensis , T. platensis and Caiman latirostris (Dantas et al , 2011; França et al , 2014b; Dantas et al , 2017, and references therein).…”

Section: Methodsmentioning

confidence: 99%

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Integrative isotopic Paleoecology (δ¹³C, δ¹⁸O) of a Late Pleistocene vertebrate community from Sergipe, NE Brazil

Dantas

Cherkinsky

Lessa

et al. 2018

Preprint

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26Isotopes are one of the best tools to reconstruct the Paleoecology of extinct taxa, 27 yielding insights about their diet (through carbon; C 3 and C 4 plants), niche breadth (B A ) 28 and the environment in which they lived. In the present work we go deeper in the use of 29 isotopes and explore a mathematical mixing model with the stable isotopes of two 30 elements (carbon and oxygen) to (1) suggest the relative contribution of four types of 31 food resources (leaves, fruits, roots and C 4 grass) for meso-and megaherbivores (weight 32 > 100 kg) that lived in the Late Pleistocene of Poço Redondo, Sergipe, Brasil, and (2) 33 evaluate which of these herbivores could be the potential prey for the carnivores 34 Smilodon populator and Caiman latirostris. To explore the intra/interspecific 35 competition of these fauna, we generate weight estimation, standardized niche breadth 36 (B A ) for the meso-megamammals from Sergipe and compare with data from the meso-37 megaherbivores from Africa, concluding that Eremotherium laurillardi and Toxodon 38 platensis were the best resource competitors in the Late Pleistocene of Sergipe, and 39 reinforcing their importance as key species in this extinct community. Finally, we 40 reconstructed the paleoenvironment in which the vertebrate community of Sergipe 41 lived, estimating Mean Annual Temperature (ºC), Mean Annual Precipitation, Biomass 42 and Energy Expendidure, noting that environments in the Late Pleistocene of Sergipe 43were similar to those of Africa nowadays, but hotter and with more energy expenditure 44 for these meso-megamammals. 45 46 47 48 65 Most researchers use carbon and nitrogen isotopic data, extracting these data from 66 collagen. However, in tropical regions these proteins are difficult to be preserved, 67 leaving only the possibility to use carbon and oxygen isotopic data extracted from 68 hydroxyapatite. This mineral usually survives much better than the organic fractions of 69 collagen (Cherkinsky, 2009), being in tropical regions the best option to recover diet 70 information from extinct species. 71 The isotopic composition of hydroxyapatite can be preserved with minimal or no 72 significant diagenetic alteration. Hydroxyapatite carbonate and phosphate in bone and 73 dentin are more susceptible to diagenetic overprinting than enamel (Bocherens et al., 74 1996), for example. 75 Substitutions are mainly in the phosphate position and are most likely in the 76 hydroxyl position. The absorbed carbonates are more labile, but substitute ones are 77 structural carbonates, and, thus, contribute to saving the original isotopic composition 78 (Cherkinsky, 2009). 79 Thus, the main aims of this paper were to use mathematical mixing models using 80 carbon and oxygen isotopic (extracted from hydroxyapatite) data from fossil 81 vertebrates: (i) to infer four types of resources for herbivores (leaf, fruit, root and C 4 82 grass); (ii) to suggest, among the herbivorous mammals from Sergipe, Brazil, which 83 contributed to the isotopic diet of predators such as Smilodon...

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Section: Resultsmentioning

confidence: 73%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Integrative isotopic Paleoecology (δ¹³C, δ¹⁸O) of a Late Pleistocene vertebrate community from Sergipe, NE Brazil

Dantas

Cherkinsky

Lessa

et al. 2018

Preprint

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“…Specific studies were carried out for Venezuela [19,53], Argentina [53], Colombia [21,23] and Ecuador [54]. For Brazil, in particular, [10] analyzed the distribution of eight species in the center-west region and [55] analyzed the distribution of the species complex T. brasiliensis, which occurs mainly in the Brazilian northeast. Such results are in consonance with the species distributions and the patterns of environmental suitability obtained through SDM clim .…”

Section: Discussionmentioning

confidence: 99%

Influence of human population density on spatial distribution patterns of environmental suitability for triatomine vectors of Chagas disease

Eduardo

Santos

Rebouças

et al. 2019

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Previous work on Chagas Disease disease at large spatial scales has not explored how interaction with humans can affect projections for geographical distribution of environmental suitability of vector species. Here, we compare niche-based species distribution models with climatic variables as predictors (SDM clim ) and with climatic variables + human population density (SDM Human ). Our results show that accounting for human population density helps refine the models to finer geographical scales. Also, different spatial patterns of accumulated environmental suitability were obtained by SDM clim and SDM Human . Moreover, projections were more accurate for SDM Human than for SDM clim . Our results show that considering human populations in SDMs for epidemiologically relevant triatomiane species can improve our understanding of macroecology and biogeography of environmental suitability for vectors of Chagas disease.

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“…O registro fóssil de crocodilomorfos pleistocênicos na América do Sul (Figura 1) abrange táxons de Crocodylidae Cuvier, 1807, Gavialidae Hay, 1930 e Caimaninae, sendo mais abundante em território brasileiro (Fortier & Rincón 2013;Cidade & Hsiou 2018). Fósseis de Alligatoridae foram apontados para os estados de Rondônia (Andrade et al 2010), Bahia (Fortier et al 2010;Castro et al 2014), Piauí (Guidon et al 2009), Rio Grande do Norte (Porpino et al 2004;Marinho et al 2005), Ceará (Araújo-Júnior et al 2010), Mato Grosso (Hirooka 2003), Rio Grande do Sul (Hsiou & Fortier 2007) e Sergipe (de Melo França et al 2014) e com certa dúvida Minas Gerais (Lydekker 1888;Patterson 1936).…”

Section: Introductionunclassified

Primeiro registro fóssil de Alligatoridae do Mato Grosso do Sul e o valor sistemático das rosáceas em Caimaninae

Geroto

Oliveira

Janolla

2019

PECEN

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No estado do Mato Grosso do Sul, fósseis de vertebrados Pleistocênicos ou Holocênicos são encontrados majoritariamente em grutas calcárias da Serra da Bodoquena. Além disso, na maioria das vezes os fósseis pertencem à mamíferos de grande porte, como por exemplo preguiças gigantes, tatus, gliptodontes, proboscídeos e grandes carnívoros. No entanto, as ocorrências de outros vertebrados fósseis são raras. Diante do exposto, este trabalho teve por objetivos realizar a primeira descrição de fósseis de Crocodylia provenientes do rio Formoso, próximo à foz com o rio Miranda, no município de Bonito-MS. Em adição, alguns comentários sobre sistemática foram realizados. Os elementos fósseis são dois osteodermos. Embora as características morfológicas dos osteodermos fósseis não permitam a identificação de sua posição precisa (dorsais ou caudais), os resultados das análises comparativas por meio da morfometria linear são sugestivos para identificação de provável Melanosuchus cf. niger, além de um espécime indeterminado de Eusuchia. Uma hipótese plausível seria considerar um possível caso de gigantismo em Caiman latirostris Daudin, 1802, cuja espécie ainda está presente na região. Portanto, os registros apresentados aqui ajudam a compor um quadro sobre a estrutura das comunidades de vertebrados durante o Quaternário Tardio de Mato Grosso do Sul.Palavras chave: Osteodermo, Crocodylia, Rio Formoso, Quaternário, Mato Grosso do Sul.

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Radiocarbon dating and stable isotopes analyses of Caiman latirostris (Daudin, 1801) (Crocodylia, Alligatoridae) from the late Pleistocene of Northeastern Brazil, with comments on spatial distribution of the species

Cited by 7 publications

References 25 publications

Integrative isotopic Paleoecology (δ¹³C, δ¹⁸O) of a Late Pleistocene vertebrate community from Sergipe, NE Brazil

Integrative isotopic Paleoecology (δ¹³C, δ¹⁸O) of a Late Pleistocene vertebrate community from Sergipe, NE Brazil

Influence of human population density on spatial distribution patterns of environmental suitability for triatomine vectors of Chagas disease

Primeiro registro fóssil de Alligatoridae do Mato Grosso do Sul e o valor sistemático das rosáceas em Caimaninae

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Radiocarbon dating and stable isotopes analyses of Caiman latirostris (Daudin, 1801) (Crocodylia, Alligatoridae) from the late Pleistocene of Northeastern Brazil, with comments on spatial distribution of the species

Cited by 7 publications

References 25 publications

Integrative isotopic Paleoecology (δ13C, δ18O) of a Late Pleistocene vertebrate community from Sergipe, NE Brazil

Integrative isotopic Paleoecology (δ13C, δ18O) of a Late Pleistocene vertebrate community from Sergipe, NE Brazil

Influence of human population density on spatial distribution patterns of environmental suitability for triatomine vectors of Chagas disease

Primeiro registro fóssil de Alligatoridae do Mato Grosso do Sul e o valor sistemático das rosáceas em Caimaninae

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Integrative isotopic Paleoecology (δ¹³C, δ¹⁸O) of a Late Pleistocene vertebrate community from Sergipe, NE Brazil

Integrative isotopic Paleoecology (δ¹³C, δ¹⁸O) of a Late Pleistocene vertebrate community from Sergipe, NE Brazil