Journal of Environmental Biology

Evaluation of reproductive performance in indigenous endemic ornamental fish Sahyadria denisonii using hormones under captive environment 

 ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

N. Mahadevi¹*, S. Felix², B. Ahilan¹ and C.B.T. Rajagopalasamy¹ 

¹Department of Aquaculture, Dr. M.G.R. Fisheries College and research Institute, Ponneri-601 204, India

²Tamil Nadu Dr. J. Jayalalithaa Fisheries University, Nagapattinam-611 002, India

*Corresponding Author Email : mahadevicof@gmail.com

Paper received: 15.06.2019??????? ?????????????????????? ????????????????Revised received: 18.09.2019????????????? ???????????????? Accepted: 05.12.2019

Abstract

Aim: The present study aimed to develop the hatchery technology for production of indigenous ornamental fish Sahyadria denisonii to ensure year round seeds and for conservation of natural resources.

Methodology: In the present investigation, brooders were collected from wild, acclimatized to hatchery condition and enriched under captive environment. The mature brooders were injected with three different synthetic hormones namelyt. Human chorionic gonadotropin (HCG), Ovatide and WOVA-FH at different doses (0.3, 0.5, 0.7 and 0.9 ml/kg of female and half a dose to male).?????

Results: Fishes did not release their gametes naturally after inducement. Hence, artificial fertilization was carried out after 16 hrs of injection. Among the synthetic hormones used WOVA-FH @ 0.5 ml kg^-1 of female and half a dose to male showed better breeding performance in terms of number of spawned eggs, fertilization rate (75.3%) and hatching rate (83.0%).??????

Interpretation: Synthetic hormone WOVA-FH, human chorionic gonadotropin (HCG) and ovatide to female and male through artificial fertilization can be adopted for captive breeding of Indigenous endemic ornamental fish Sahyadria denisonii. ???

Key words: Captive environment, Hormones, Indigenous fish, Reproductive performance, Sahyadria denisonii

Copyright ? 2020 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).