Morphological study of epididymides in the scorpion mud turtle in natural habitat (Kinosternon scorpioides �? Linnaeus, 1976)

Biotemas

Antonia Santos Oliveira²  Lianne Polianne Fernandes Araujo²  Leandro Almeida Rui³  Alana Lislea de Sousa²  Maria Angélica Miglino³  Diego Carvalho Viana¹ 

[1]Universidade Estadual do Maranhão(UEMA), Mestrando em Ciência Animal com concentração em Conservação e Reprodução Animal na área de Morfofisiologia e Citogenética Animal

[2]Universidade Estadual do Maranhão

[3]Universidade de São Paulo

关键词: Epididymal morphometry;    Reproduction;    Reproductive seasonality;    Wild fauna;   

DOI  :  

学科分类：生物科学（综合）

来源: Universidade Federal de Santa Catarina * Centro de Ciencias Biologicas

【 摘 要 】

http://dx.doi.org/10.5007/2175-7925.2013v26n2p153 Morphological study of the epididymis of jurará in natural habitat ( Kinosternon scorpioides�? Linnaeus, 1976). In the state of Maranhao, Brazil, one can find the freshwater chelonian Kinosternon scorpioides, known as scorpion mud turtle, which has social, economic, and environmental value. Twenty adult scorpion mud turtles were collected in the months of March, June, September, and December, corresponding to the two periods of the year: the rainy and dry seasons. The epididymides were collected from each animal to check the existence of reproductive seasonality. The organs were evaluated through light, scanning electron, and transmission microscopy and analyzed at the epididymal epithelium height and the tubular and luminal diameters. The epididymides were divided into rete testis, ductuli efferentes, and ductus epididymis. In the rainy season, they presented stereo ciliated pseudostratified epithelium; in the dry season, they were characterized by simple, cubic, and non-ciliated cells. The morphometry of the tubular and luminal diameters and the epididymal epithelium height showed moments of epithelial alternation over the studied periods, with the highest averages in the rainy season, within the reproductive period. Spermatozoids were observed throughout the year, although their viability couldn’t be evaluated. Taking into account the data obtained, one may claim that the scorpion mud turtle presents reproductive seasonality.

【 授权许可】

Unknown