Precocious recrudescence of seminal vesicle and testis in catfish, Clarias batrachus (Linn.), subjected to a long photoperiod regime.
Indian J Exp Biol
;
1998 Dec; 36(12): 1264-8
Artigo
em Inglês
| IMSEAR
| ID: sea-61246
ABSTRACT
The catfish C. batrachus were exposed to a long photoperiod of 14 hr light during resting--early preparatory (December-February) phases of the reproductive cycle. At 70-day sampling, both the seminal vesicle (SV) and testis registered marked stimulatory effects in comparisons to control fish maintained under approximately 10.55 L13.45D as shown by the increased size and weight. In both the SV and testis, concentrations of total proteins, fructose, hexosamines, and sialic acid were significantly high compared to those of the control fish indicating increased activities of the organs. Serum levels of gonadotropin-II, testosterone, and estradiol-17 beta were significantly high in the long photoperiod group. The results show that exposure to long photoperiod can stimulate early development of both the SV and testis by activating the pituitary--gonadal axis.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Glândulas Seminais
/
Hormônios Esteroides Gonadais
/
Testículo
/
Peixes-Gato
/
Masculino
/
Fotoperíodo
/
Animais
Idioma:
Inglês
Revista:
Indian J Exp Biol
Ano de publicação:
1998
Tipo de documento:
Artigo
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