首页   按字顺浏览 期刊浏览 卷期浏览 Influences of environmental factors and pineal gland on seasonal testicular cycle in wh...
Influences of environmental factors and pineal gland on seasonal testicular cycle in white‐throated munia(Lonchura malabarica)

 

作者: Tapaskumar Maji,   Krishna Some,   Sanjibkumar Chattopadhyay,   Asitkumar Sarkar,  

 

期刊: Journal of Interdisciplinary Cycle Research  (Taylor Available online 1992)
卷期: Volume 23, issue 1  

页码: 72-80

 

ISSN:0022-1945

 

年代: 1992

 

DOI:10.1080/09291019209360130

 

出版商: Taylor & Francis Group

 

关键词: Seasonal cycle;testis;white‐throated munia;pinealocytes

 

数据来源: Taylor

 

摘要:

Histological studies of the seasonal testicular cycle in white‐throated munia,Lonchura malabarica(Passeriformes : Ploceidae) Tevealed that this bird breeds from September to January in India. The gametogenesis in the male gonad starts in May when the day length is maximum and the temperature high. The initiation of sexual cycle starts in May‐July. Active spermatogenesis occurs in September to October. The Leydig cell nucleus diameter increases in August just before the onset of spermatogenesis. The diameter of pinealocyte nucleus increases in non‐breeding stage of the bird and decreases during breeding period.

 

点击下载:  PDF (416KB)



返 回