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1 November 2011 Germ Cell Dynamics during the Annual Reproductive Cycle of Dendropsophus minutus (Anura: Hylidae)
Lia Raquel de Souza Santos, Lilian Franco-Belussi, Classius de Oliveira
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Abstract

Thirty male specimens of Dendropsophus minutus Peters, 1972, were collected from April 2004 to March 2005 in the region de Sao José do Rio Preto/SP, to conduct a histological study during the seasonal and annual cycles. Testicular activity was inferred based on the volume occupied by each type of cellular cyst present in the seminiferous tubules, as well as the quantity of germ cells in the final development stage, the spermatozoids. All data analyzed were correlated with climatic variables (temperature, rainfall and photoperiod) registered in the region where specimens were collected. A significant variation was verified in the quantity of spermatozoids as well as in the volume occupied by spermatids and spermatozoids throughout the year and between the cold/dry and hot/ humid seasons. It has also been reported that environmental conditions are important factors closely related to species reproduction and that production of germ cells and volume occupied by germ cysts is independent of anatomical aspect of the gonads. Thus, it was possible to verify that although the species reproduces throughout the year, individuals exhibit a preferential reproduction season, resulting in a reproductive (October to the end of February) and a post-reproductive period.

© 2011 Zoological Society of Japan
Lia Raquel de Souza Santos, Lilian Franco-Belussi, and Classius de Oliveira "Germ Cell Dynamics during the Annual Reproductive Cycle of Dendropsophus minutus (Anura: Hylidae)," Zoological Science 28(11), 840-844, (1 November 2011). https://doi.org/10.2108/zsj.28.840
Received: 3 March 2011; Accepted: 1 April 2011; Published: 1 November 2011
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