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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue May 2020, 41 (3)                                     Back


nstantaneous and historical temperature effects on a-pinene

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

 

 

 

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