A5076707899- Reproductive biology and impacts on aquatic species
- Aquaculture Nutrition and Growth
- Neuroendocrine regulation and behavior
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Sperm and Testicular Function
- Ovarian function and disorders
- Physiological and biochemical adaptations
- Reproductive Biology and Fertility
- Hypothalamic control of reproductive hormones
- Aquaculture disease management and microbiota
- Fish Ecology and Management Studies
- Circadian rhythm and melatonin
- Environmental Toxicology and Ecotoxicology
- Mercury impact and mitigation studies
- Marine and fisheries research
- Stress Responses and Cortisol
- Regulation of Appetite and Obesity
- Estrogen and related hormone effects
- Neurobiology and Insect Physiology Research
- Cephalopods and Marine Biology
- Toxic Organic Pollutants Impact
- Fish biology, ecology, and behavior
- Zebrafish Biomedical Research Applications
- Ion Transport and Channel Regulation
- Pregnancy and preeclampsia studies
Banaras Hindu University
2012-2024
Cochin University of Science and Technology
2016-2023
General Hospital Ernakulam
2023
Bridge University
2022
National Bureau of Fish Genetic Resources
2010
National Institute of Ocean Technology
2005
Institute of Medical Sciences
1976-1981
An HPLC method was used to tentatively identify progesterone (P 4 ) and its metabolites (17-hydroxyprogesterone (17-P 17,20β-dihydroxy-4-pregnen-3-one (17,20β-P)), corticosteroids (cortisol corticosterone) testosterone in ovary/follicular preparations of the catfish Heteropneustes fossilis associated with vivo or vitro oocyte maturation/ovulation. A single i.p. injection human chorionic gonadotrophin (100 IU/fish, sampled at 0, 8 16 h) induced maturation ovulation, which coincided...
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Catfish ( Clarias batrachus L.) were exposed to selected sublethal concentrations of mercuric chloride (HgCl 2 ; 0.05 mg l −1 ), methylmercuric (CH 3 HgCl; 0.04 ) and emisan 6 (an organic mercurial fungicide; 0.5 for intervals 45, 90 180 days from February July (preparatory spawning phase the annual reproductive cycle). The gonadosomatic index showed a significant decrease after 90‐ 180‐day exposure mercurials. Histologically, seminiferous tubules smaller in size contained mostly spermatids...
Abstract Hypothalamic serotonin (5-HT; content and turnover) monoamine oxidase (MAO) activity were measured in female catfish, Heteropneustes fossilis , after ovariectomy supplementation with oestradiol-17β (OE 2 ) the recrudescent quiescent phases. These factors correlated changes plasma levels of OE gonadotrophin. In phase (December), neither nor had any significant effect on 5-HT MAO activity. Plasma gonadotrophin undetectable both control treated fish, indicating that there was no...