Espermatogênese de Pithecopus nordestinus caramaschi, 2006 (Anura, phyllomedusidae) em um remanescente de mata atlântica, Pernambuco, Nordeste do Brasil.

Abstract

The control of reproductive cycles requires that bodies be able to detect changes in the environment and adjust the parameters according to the requirements. Being mediated by the interaction between the endogenous rhythms of the animal and the influence of environmental factors, therefore, in open areas physical environment conditions such as temperature and precipitation are the main factors influencing the standards anuran reproductive. Therefore, the objective of this work was to characterize the histological and morphometric aspects of testicles of Pithecopus nordestinus (CARAMASHI, 2006) as well as to assess the influence of precipitation and temperature on the parameters tested. The collections were made in the ecological station of Tapacurá-TSE, is a remnant of mata atlantica seasonal semideciduous forests. 23 males were collected from Pithecopus nordestinus distributed between the months of February through November 2018. The monthly figures show that only significant relationships between rainfall and the density of spermatids primary (Esp I) (r = 0.04; p = 0.02), while the secondary Spermatids (Esp II) and Sperm (Z) did not show any relationship significant. Already the monthly variation of the temperature of the TSE showed no significant relations with the density of spermatids primary (Esp I), spermatids (Esp II) and sperm (Z). The results of this study support with the KEYS et al. (2016), which emphasizes that the spermatogenesis in Anurans in General is with cell organization always cystic on a same stage of differentiation. Individuals collected in this work presented the testicles as pairs, oval structures and compact, varying your color with yellowish, whitish. This work has complied with the objectives proposed, in which the monthly values of the density of primary, secondary and spermatids spermatids sperm showed significant variations over the months demonstrating collection too, dependence with the variation of rainfall in the region.