Male reproductive morphofunctional evaluation of a Neotropical sperm-storing vespertilionid bat (Myotis levis) in an environmental context.

Cell and Tissue Research
T O FariasGuilherme Mattos Jardim Costa

Abstract

Myotis levis (yellowish myotis) is a small Neotropical insectivorous vespertilionid bat that provides valuable ecosystem services, such as control of disease vectors and agricultural pests. Aiming to describe the fluctuations of the reproductive organs throughout the year, the gonads and epididymis from 124 adult bats were histologically evaluated. These animals were captured in Santuário do Caraça, Minas Gerais, Brazil. After the initial screening, six bats per reproductive stage (in a representative month) had specific organs harvested for further investigation. The gonads, epididymis, accessory sex gland and brown adipose tissue were collected for biometric analyses. Furthermore, yellowish myotis testis was evaluated through histomorphometric and molecular assays, whereas blood samples were collected for hormonal analyses. The data were compared among the reproductive stages and correlated with rainfall distribution. As a result, we demonstrated that yellowish myotis presented a seasonal reproduction showing testis regression and rest, resembling the pattern exhibited by temperate-zone vespertilionid bats. During the Mature stage, after the peak of rainfall distribution, yellowish myotis testicles were fully developed for ga...Continue Reading

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Citations

Aug 24, 2021·Theriogenology·Talita De Oliveira FariasGuilherme Mattos Jardim Costa

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BETA
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