World Aquaculture and Fisheries Conference

October 26-27, 2020
Tokyo, Japan

V. Jayaprakas

Potential speaker for Aquaculture conference 2020 - V. Jayaprakas
V. Jayaprakas
Amity University, India
Title : Brood stock nutrition on the reproductive potential of commercially important global ornamental fishes

Abstract:

The ornamental fish trade has emerged as a global multimillion dollar industry with an estimated US $500-630 million annually. India's share in the export market is US $ 1.19 million during 2017.Ornamental fish trade has enormous potential in India and in Canada. To expand trade new technologies will have to be developed which will help in attending sustainable industry. The domestic production and trade of ornamental fish is largely confined to breeding exotic fishes, live bearers like guppies, mollies, platy's and swordtails and a few egg layers like gold fish, angel fish and gourami. Our country has a rich and unique biodiversity with a variety of indigenous ornamental fishes, but this resource has not been properly exploited. India is blessed with more than 125 species of fresh water fishes out of which about 85 species of ornamental fishes  endemic to Western Ghats. Recently indigenous ornamental fishes are getting more popularity for exports in the markets. There is tremendous potential for initiating increased efforts on the nutrition on  reproduction and breeding of ornamental fishes. Not much  studies have been carried out in this area on  ornamental fishes both indigenous and exotic species. Studies on nutritional requirements, particularly on dietary protein and lipid requirements for brood stock development and breeding of indigenous ornamental fishes have not yet been highlighted by researchers.  Therefore the present project is proposed to evaluate the nutritional requirements in terms of  various concentrations of protein and fatty acids supplemented with essential fatty acids for reproductive performance such as, maturation, fecundity, spawning, percent fertility, hatching rate, larval survival and fry output. It is also envisaged to develop a low cost supplementary diet for the brood stock development of ornamental fishes which could be achieved within a specified period of time. Reproductive success is vital for sustainable and profitable commercial aquaculture systems. One major factor affecting the reproductive potential of the female fish is the nutrition. A nutritionally balanced diet is essential for optimizing the reproductive performance of the brood stocks. Nutrition has direct and indirect effects on maturation of gonads, fecundity and viability of eggs and larvae. High quality nutritional diets enhances fish growth and attain the brood stock to a larger size earlier. Larger fish produce more number of juveniles and larger fish tend to produce more number of eggs and within a species larger fish produce larger sizes of eggs. Larger egg size confers a bigger size larvae at hatching with a better  rate of survival. The quality of brood stock diet also affects the survival of juveniles and young ones. Protein, lipids particularly, polyunsaturated fatty acids, vitamins, minerals and inorganic components are all important aspects of brood stock nutrition

Biography:

Prof. Dr.V.Jayaprakas, working as Professor,  has a long period (40 years) of teaching and research experience in fisheries and aquaculture. Developed Formulated supplementary protein diets for whiteprawn, pearlspot and tilapia culture and developed low-cost production technology for cage culture of murrels, Channa spp. Evolved optimum stocking density and best supplemenary feed for cage culture of Tilapia, Oreochromis mossambicus. Developed broodstock feed for Oreochromis mossambicus. Evolved optimum dosages of commercial grade growth promoters and feed additives for the culture of fresh water fishes and marine shrimps. Developed supplementary diets for optimizing reproductive potential of ornamental fishes., blue gourami, Pseudosphromenus cupanus and P.dayi

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