Response of the pituitary of the catfish, Heteropneustes fossilis (Bloch), to bilateral ovariectomy. |
| |
Authors: | T C Anand B I Sundararaj |
| |
Abstract: | Hypophyseal response to bilateral ovariectomy was studied in the catfish, Heteropneustes fossilis, during the prespawning (May) and the spawning (July) periods. During the prespawning period, a significant increase in the number of granulated PAS-positive basophils in the proximal pars distalis of the castrates was recorded on day 45 post-ovariectomy; thereafter a gradual degranulation of basophils was observed. However, in the spawning period a dramatic increase in the number of granulated basophils of the castrates was seen on day 8 post-ovariectomy and the number decreased thereafter. This differential response of the hypophysis to ovariectomy is discussed. |
| |
Keywords: | |
|
|