Reproductive Ecology of the Threatened PitviperBothrops insularisfrom Queimada Grande Island, Southeast Brazil

Marques, Otávio A. V.; Kasperoviczus, Karina N.; Almeida‐Santos, Selma Maria

doi:10.1670/11-267

Cited by 25 publications

(36 citation statements)

References 26 publications

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“…Of the 26 species occurring in Brazil, the few for which data on reproductive biology are available include Bothrops jararaca (Almeida- Santos and Orsi 2002), B. moojeni (Nogueira et al 2003), B. neuwiedi (Valdujo et al 2002;Hartmann et al 2004), B. mattogrossensis (Monteiro et al 2006), B. alternatus (Nunes et al 2010), B. insularis (Marques et al 2013), B. leucurus (Lira-da-Silva 2009Barros et al 2014) and B. atrox (Hoge andFedersoni 1976/1977;Cunha and Nascimento 1981;Oliveira 2003;Santos-Costa et al 2015;Silva 2015). These studies show that aspects of reproduction, such as viviparity and the existence of a seasonal reproductive cycle, are conserved in the group.…”

Section: Introductionmentioning

confidence: 99%

“…Bothrops in southeastern Brazil (B. alternatus, B. cotiara, B. fonsecai, B. itapetiningae, B. jararaca, B. jararacussu, B. leucurus, B. moojeni and B. neuwiedi) appear to have a unimodal annual peak of juvenile activity between the end of February and the beginning of May, resulting from a summer and fall recruitment phase (Almeida- Santos and Salomão 2002). Most studies on reproduction in Bothrops have been carried out in southern and southeastern Brazil (Almeida- Santos and Orsi 2002;Hartmann et al 2004;Sawaya et al 2008;Marques et al 2013), where climatic seasonal patterns differ from the Amazon region. In southern Brazil, summer coincides with the rainy season, and the conditions of temperature, humidity and rainfall, as well as the abundance of food (mainly anurans, which comprise much of the diet of juvenile Bothrops), greatly favor the survival of young reptiles (Fitch 1987), the accumulation of energy for the production of eggs and young by females, and mate-seeking activities of males (Lillywhite 2014).…”

Section: Introductionmentioning

confidence: 99%

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Reproductive and feeding biology of the common lancehead Bothrops atrox (Serpentes, Viperidae) from central and southwestern Brazilian Amazonia

Bisneto

Kaefer

2019

Acta Amaz.

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The pitviper Bothrops atrox is a widely distributed and medically important snake in Amazonia. Given that the reproductive and feeding biology of snakes varies geographically, we aimed to characterize the natural history of individuals from the central and southwestern portions of the biome. We analyzed museum-preserved specimens collected in the region between the metropolitan areas of the Brazilian cities of Manaus and Porto Velho. We took morphometric measurements and performed the analysis of gonads and digestive tracts of 109 individuals. Females attain sexual maturity with larger body sizes. Adults of the species show pronounced sexual dimorphism in body size, with females being larger. The reproductive cycle, especially in males, appears to be synchronized with regional rainfall, which markedly differed across the biome. The pitvipers had a generalist diet, consuming a wide range of prey such as centipedes, frogs, lizards, snakes and mammals. We provide the first record of predation of the snake Imantodes cenchoa (Dipsadidae) by B. atrox. There was an ontogenetic shift in the diet: smaller individuals fed mainly on ectothermic prey (centipedes, frogs, lizards and snakes), while adults tended to incorporate endothermic prey (mammals) to their food repertoire.Biologia reprodutiva e alimentar da jararaca Bothrops atrox (Serpentes, Viperidae) do centro e sudoeste da Amazônia brasileira RESUMO A jararaca Bothrops atrox é uma serpente de ampla distribuição e de importância médica na Amazônia. Visto que a biologia reprodutiva e alimentar de serpentes varia geograficamente, nosso objetivo foi o de caracterizar a história natural de indivíduos provenientes das porções central e sudoeste do bioma no Brasil. Analisamos espécimes preservados coletados na área compreendida entre as regiões metropolitanas dos municípios brasileiros de Manaus e Porto Velho. Realizamos medidas morfométricas e analisamos as gônadas e o trato digestivo de 109 exemplares. Fêmeas apresentaram maturação sexual com tamanhos corporais maiores que os machos. Adultos apresentaram marcado dimorfismo sexual em tamanho, sendo que as fêmeas foram, em média, maiores que os machos. O ciclo reprodutivo, especialmente em machos, pareceu estar sincronizado com o regime regional de chuvas, que difere de outras partes do bioma. As serpentes apresentaram dieta generalista, tendo ingerido uma ampla gama de presas, como lacraias, anuros, lagartos, serpentes e mamíferos. Registramos, pela primeira vez, a predação da serpente Imantodes cenchoa (Dipsadidae) por B. atrox. Houve mudança ontogenética na dieta: indivíduos menores se alimentaram principalmente de presas ectotérmicas (lacraias, anuros, lagartos e serpentes) e adultos tenderam a incorporar itens endotérmicos (mamíferos) ao repertório alimentar. PALAVRAS-CHAVE: dieta; história natural; Neotrópico; reprodução CITE AS: Bisneto, P.F.; Kaefer, I.L. 2019. Reproductive and feeding biology of the common lancehead Bothrops atrox (Serpentes, Viperidae) from central and southwestern Brazilian Amazonia. Acta Amazoni...

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reproductive and feeding biology of the common lancehead Bothrops atrox (Serpentes, Viperidae) from central and southwestern Brazilian Amazonia

Bisneto

Kaefer

2019

Acta Amaz.

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“…Queimada Grande Island (24°29ʹ 8.5ʹʹ S, 46°40ʹ 31.22ʹʹ W), the only natural habitat of B. insularis, is located about 18 nautical miles, or 35 km off the coast of São Paulo State, Brazil (Figure 1). Queimada Grande Island is approximately 430,000 m 2 , with an irregular topography and maximum altitude of 206 m. According to Marques, Kasperoviczus, and Almeida-Santos (2013), the climate is subtropical with two seasons: rainy and hot from October to March and dry and cold from April to September. The island is uninhabited and may be reached only by environmental analysts and scientists authorized by the Brazilian government.…”

Section: Island Snakes and Swab Collectionmentioning

confidence: 99%

Molecular identification and phylogenetic analysis ofBothrops insularisbacterial and fungal microbiota

Barbosa

Ferreira

Mello

et al. 2018

Journal of Toxicology and Environmental Health, Part A

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Bothrops insularis, known as the golden lancehead snake, has its natural habitat restricted to Queimada Grande Island on the southern coast of Brazil. This culture-dependent study aimed to identify microorganisms obtained from the mouth, eyes, and cloaca of this species. Swabs from 20 snakes were collected for fungal and bacterial isolation. DNA was extracted from all samples, and identification was performed by amplifying the ITS1-5.8S-ITS2 regions and the 16S rDNA gene, respectively. All strains were identified and deposited in the GenBank nucleotide database. MEGA v6.0 software was utilized to construct phylogenetic trees. In total, 100 strains were isolated and characterized, from which 42 fungi were distributed into 23 species and 58 bacteria into 13 species. The genus Fusarium was predominant since 11 strains and probably a new species was isolated from this fungus. Pseudomonas aeruginosa and Enterococcus faecalis were the predominant groups of aerobic bacteria isolated. Phylogenetic analyses between bacterial and fungal sequences suggest a similarity between the microorganisms found on the island and on the continent. These findings may be attributed to anthropic actions resulting from both expeditions to the island and actions of migratory birds, which are the main sources of food for snakes.

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“…ANDRADE, 2010;MARQUES et al, 2012;GUIMARÃES et al, 2014), o conhecimento sobre a biologia reprodutiva de Bothrops insularis ainda é principiante e as informações a respeito da sazonalidade são conflitantes. Enquanto alguns trabalhos realizados in situ e a partir de espécimes depositados em coleção científica (KASPEROVICZUS, 2009;ALMEIDA-SANTOS, 2013) afirmam haver sazonalidade reprodutiva de fêmeas e machos, inclusive com um período de quiescência testicular, outro trabalho realizado pelo mesmo grupo mostra não haver diferença expressiva na qualidade seminal de animais mantidos em cativeiro (SILVA et al, 2015). Em decorrência disso, uma investigação da endocrinologia reprodutiva foi proposta na tentativa de elucidar essa questão.…”

Section: Stein I V Monitoramento Das Oscilações Anuais Nos Níveis unclassified

Monitoramento das oscilações anuais nos níveis de testosterona plasmática e andrógenos fecais de machos de jararaca-ilhoa (Bothrops insularis) mantidos em cativeiro

Stein¹

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Agradeço à Deus pela oportunidade de aprendizado nessa vida e aos meus guias espirituais que sempre estão ao meu lado me acalmando e soprando a direção certa em forma de intuições.Aos meus pais, Ana Marta e Rudi Stein por me darem amor, educação, por me ensinarem valores e disciplina. À minha irmã Marilia Stein, meu cunhado Rafael Cardoso e minha afilhada Camila, pelo amor incondicional.

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Reproductive Ecology of the Threatened PitviperBothrops insularisfrom Queimada Grande Island, Southeast Brazil

Cited by 25 publications

References 26 publications

Reproductive and feeding biology of the common lancehead Bothrops atrox (Serpentes, Viperidae) from central and southwestern Brazilian Amazonia

Reproductive and feeding biology of the common lancehead Bothrops atrox (Serpentes, Viperidae) from central and southwestern Brazilian Amazonia

Molecular identification and phylogenetic analysis ofBothrops insularisbacterial and fungal microbiota

<b>Monitoramento das oscilações anuais nos níveis de testosterona plasmática e andrógenos fecais de machos de jararaca-ilhoa (<i>Bothrops insularis</i>) mantidos em cativeiro</b>

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