Follicular growth and sex steroids in adult females of the endemic Amazonian freshwater stingray Potamotrygon wallacei (Chondrichthyes, Potamotrygonidae)

被引：1

作者：

Morales-Gamba, Ruben Dario ^{[1
]}

Goes de Araujo, Maria Lucia ^{[2
]}

Barcellos, Jose Fernando ^{[3
]}

Marcon, Jaydione Luiz ^{[1
,4
]}

机构：

[1] Univ Fed Amazonas UFAM, Programa Posgrad Zool, Manaus, Amazonas, Brazil

[2] Univ Fed Sergipe UFS, Dept Pesca & Aquicultura, Sao Cristovao, Sergipe, Brazil

[3] Univ Fed Amazonas UFAM, Inst Ciencias Biol, Dept Morfol, Manaus, Amazonas, Brazil

[4] Univ Fed Amazonas UFAM, Inst Ciencias Biol, Dept Ciencias Fisiol, Manaus, Amazonas, Brazil

来源：

ENVIRONMENTAL BIOLOGY OF FISHES | 2021年 / 104卷 / 12期

关键词：

Estradiol; Granulosa cells; Pyriform-like cells; Testosterone; Vitellogenesis; SERUM CONCENTRATIONS; REPRODUCTION; HORMONES; SHARK; MORPHOLOGY; BRAZIL; NEGRO; RIVER;

D O I：

10.1007/s10641-021-01191-8

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

This study evaluated how the plasma steroid hormones testosterone (T) and 17 beta-estradiol (E-2) are related to follicular development in regenerating females of the cururu stingray, Potamotrygon wallacei, during the rising water season of the middle Rio Negro basin. The relative weight of hepatic and ovarian tissues, as well as the morphological changes in the vitellogenic follicles, were related to the increase in the water level. Correlations between the maximum follicular diameter (MFD) and E-2 and T levels suggest a concomitant action of these steroids in controlling follicular growth. These associations support the idea that the reproduction of this species is synchronous with the local hydrological cycle of the middle Rio Negro basin.

引用

页码：1665 / 1672

页数：8