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Joy, K. P.
- A Comparative Study on Distribution, Morphology, and Some Chemical Constituents of Seminal Vesicles in Catfishes
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Authors
K. P. Joy
1,
M. S. Singh
1
Affiliations
1 Department of Zoology, Banaras Hindu University, Varanasi-221005, IN
1 Department of Zoology, Banaras Hindu University, Varanasi-221005, IN
Source
Journal of Endocrinology and Reproduction, Vol 2, No 1&2 (1998), Pagination: 26-33Abstract
Seminal vesicles (SV) are present in all catfishes collected in this study : Clarias batrachus (Linnaeus), Wallago attu (Bloch and Schneider), Ompok siluroides (Lecepede), Rita rita ((Hamilton), Mystus tengara (Hamilton), Mystus vittatus (Bloch), Pangassius pangassius (Hamilton), Heteropneustes fossilis (Bloch) and absent in species other than catfishes. The number of SV lobes ranged from a single pair in H. fossilis to several pairs in P. pangassius with significant morphological variations. Total proteins, fructose, hexosamines and sialic acid were estimated in the testes and SV. Compared to testes, total proteins were higher in the SV of W. attu, O. siluroides and H. fossilis, fructose levels were higher in the SV of O. siluroides and C. batrachus, hexosamine contents were higher in the SV of W. attu, M. tengara and H. fossilis, and sialic acid levels in the SV of W. attu, O. siluroides, R. rita, M. vittatus and P. pangassius. Sialic acid was not detected in the testes of R. rita and H. fossilis. The SV may be an adaptive modification of the reproductive system for temporary storage of spermatozoa in a protein-sugar-rich nutrient medium.Keywords
Catfishes, Fructose, Hexosamine, Seminal Vesicles, Sialic Acid, Teleosts, Testis.- Involvement of cAMP in Basal and Estradiol-17β(E2) Modulated Activity of Brain Tyrosine Hydroxylase in the Female Catfish Heteropneustes fossilis:An in vitro Study
Abstract Views :200 |
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Authors
Affiliations
1 Department of Zoology, Banaras Hindu University, Varanasi 221 005, IN
1 Department of Zoology, Banaras Hindu University, Varanasi 221 005, IN
Source
Journal of Endocrinology and Reproduction, Vol 7, No 1&2 (2003), Pagination: 33-33Abstract
In the present in vitro study, involvement of cAMP in basal and E2-modulated brain (hypothalamus and telencephalon) TH activity was demonstrated in female catfish Heteropneustes fossilis. Incubation of enzyme preparation (soluble active fraction) with cAMP (0.05-1 .OmM) and inhibitors of cAMP-specific phosphodiesterase (IBMX, 0.5-2.0mM) and theophylline, 0.5-2.0mM) stimulated enzyme activity in a concentration-dependent manner.- Induction of Oocyte Final Maturation in the Catfish Heteropneustes fossilis by Catecholestrongens and Catecolamines
Abstract Views :187 |
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Authors
Affiliations
1 Department of Zoology, Banaras Hindu University, Varanasi-221005, IN
1 Department of Zoology, Banaras Hindu University, Varanasi-221005, IN