INFLUENCE OF β -ESTRADIOL HORMONE AND EYESTALK ABLATION ON LIPID METABOLISM IN OVARY AND HEPATOPANCREAS OF FRESH WATER CRAB, Barytelphusa cunicularis
R. S. KALE *
Department of Zoology, Arts, Science and Commerce College, Manmad, Nashik-423104 (Affiliated to Savitribai Phule Pune University), Pune, (M.S.) India.
*Author to whom correspondence should be addressed.
Abstract
The present work was carried out to determine the effect of β- estradiol hormone and eyestalk ablation on ovarian maturation in relation to lipid changes in the ovary and hepatopancreas of fresh water edible female crab, Barytelphusa cunicularis. The experiment was conducted for a period of 21 days. Initially, the base control crabs were dissected on o-day of the experiment and remaining grouped crabs were dissected on 21st day of the experiment. The studies showed influence of β- estradiol hormone in lipid content (30.21 %) in ovary and (25.18 %) in hepatopancreas. However, eyestalk ablated crabs ovary showed accumulated lipid levels (33.12 %) while hepatopancreas showed (24.22 %) lipid levels. Comparatively, the effect of β- estradiol hormone was significant over base control and experimental control crabs. But, eyestalk ablation showed increased ovarian maturation over base control, experimental control and hormone treated crabs by elevating the mobilization of lipid from hepatopancreas to the ovary for the purpose of ovarian maturation.
Keywords: Barytelphusa cunicularis, β- estradiol, eyestalk ablation, lipid, ovarian maturation.