Morphology and seasonality of the sexual segment of the kidney in genus Bothrops snakes

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dc.contributorLab. Ecologia e Evoluçãopt_BR
dc.contributorPrograma de Pós-Doutoradopt_BR
dc.contributor.authorSilva, Karina Maria Pereira dapt_BR
dc.contributor.authorAlmeida-Santos, Selma Mariapt_BR
dc.contributor.authorLobo, Luis Miguelpt_BR
dc.contributor.authorBravo-Vega, Carlos Andréspt_BR
dc.contributor.authorRici, Rose Eli Grassipt_BR
dc.contributor.authorSasa, Mahmoodpt_BR
dc.identifier.citationSilva KMP, Almeida-Santos SM, Lobo LM, Bravo-Vega CA, Rici REG, Sasa M. Morphology and seasonality of the sexual segment of the kidney in genus Bothrops snakes. J. Morphol. 2022 Feb;283(2):236-249. doi:10.1002/jmor.21439.pt_BR
dc.description.abstractIn Squamata, the sexual segment of the male kidney (SSK) produces secretory granules that are transmitted to the female tract during copulation. Here, we investigate the morphology of SSK in various species of the pitviper-genus Bothrops, a medically relevant clade of Neotropical snakes, using histology, histochemistry, as well as scanning and transmission electron microscopy. We also evaluated the relationship of SSK hypertrophy with spermatogenesis and storage of sperm. The SSK in Bothrops consists of tall columnar epithelial cells filled with electron-dense secretory granules. These granules are apparently released into the lumen by an apocrine secretory process. In general, the ultrastructural morphology of SSK in Bothrops is similar to those described for other pitvipers in the genus Agkistrodon. In most Bothrops males, the SSK produces carbohydrates and proteins, and occurs in all lobes of the kidney, occupying most of the kidney mass. In contrast, intersexual females (with male copulatory organs) of Bothrops insularis had a smaller SSK diameter than males and did not show hypertrophy. The seasonal development of SSK in Bothrops species seems to be driven by environmental factors rather than phylogeny, since sister species exhibited periods of hypertrophy at different months. In most Bothrops males, hypertrophy occurs at various seasons of the year (spring, summer, autumn), even in winter, and seasonal changes in SSK do not necessarily accompany spermatogenesis.pt_BR
dc.description.sponsorship(CAPES) Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.relation.ispartofJournal of Morphologypt_BR
dc.rightsRestricted accesspt_BR
dc.titleMorphology and seasonality of the sexual segment of the kidney in genus Bothrops snakespt_BR
dc.contributor.externalUniversidad de los Andespt_BR
dc.contributor.external(USP) Universidade de São Paulopt_BR
dc.contributor.external(UCR) Universidad de Costa Ricapt_BR
dc.subject.keyworddistal-convoluted tubulespt_BR
dc.subject.keywordvas deferenspt_BR
dc.relation.ispartofabbreviatedJ Morpholpt_BR
dc.identifier.citationabntv. 283, n. 2, p. 236-249, fev. 2022pt_BR
dc.identifier.citationvancouver2022 Feb;283(2):236-249pt_BR
dc.contributor.butantanSilva, Karina Maria Pereira da|:Desvinculado|:Lab. Ecologia e Evolução|:PrimeiroAutorpt_BR
dc.contributor.butantanAlmeida-Santos, Selma Maria|:Pesquisador|:Lab. Ecologia e Evolução|:Autor de correspondênciapt_BR
dc.contributor.butantanLobo, Luis Miguel|:Desvinculado|:Lab. Ecologia e Evoluçãopt_BR
dc.sponsorship.butantan(CAPES) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior¦¦pt_BR
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