Studies on the controlled rearing and ideal range of Environmental Conditions required for the mass production of selected marine copepods as Live-Feed for marine fish larva

Chadha, N K

Jagadis, I

Kalidas, C

Nazar, A K A

Santhosh, B

CMFRI Digital Repository

STUIIIES ON 'THE CONTROLLED REARING AND IDEAL RANGE OF ENVIRONMENTAL CONDITIONS REQUIRED FOR THE MASS PRODUCTION OF SELECTED MARINE COPEPOUS AS LIVE-FEED FOR MARINE FISH LARVAE C,KALIDAS', B. s ANTOSH', l.JAGAI)IS, A.K.NAZAR~ AND N.CHADHA~ 'ICAR-Tuticorin Research Centre of CMFRI, Thoothukudi ICAR-Vizhanjain Research Centre of CMFRI, Thiru\~ananthapuram ' ICAR-Mandapam Regional Centre of CMFRI, Mandapanl Camp I "CAR-Central Znsti.tule of Fisheries Education, Mulnbai I etnail : dascift@grnaiS.com I Abstract Copepods are natural food for many species of fishes, invertebrates and their larvae. These are tiny planktonic ciustaceans present in almost all kinds of water bodies. Copepods are much superior in nutritional value than most of the popular and common live feeds used in hatchery and need not require any enricllment. Feeding marine fish larvae with copepods irlcreases their survival, growth rates, pigmentation, stress tolerance and reduce defoimities when compared to almost all other live feeds. The present study was conducted to evaluate the effect of different salinity, Temperature, pH, photoperiod and tank colour on survival and population growth ofA. spinicuudu. The results showed consistently better population growth within range of 25 and 30 ppt. The extreme limit of salinity for survival of this species was found to be 5 ppt however, without population increase. The present experiment clearly elucidated that at a constant temperature of 28°C the population increase was maximum to an extent of 2308 nos /lit on 12"' day with the parameters such as pH between 8.0 to 8.3 and 24L: OD photoperiod and salinity of 30ppt in dark blue colour tank. 1 Key words : Copepods, Marine fish larvae, Population growth, Mass production TNJFU, FC&Rl, Thoothukudi, 19-20 June 2018 El 

Studies on the controlled rearing and ideal range of Environmental Conditions required for the mass production of selected marine copepods as Live-Feed for marine fish larvae

http://eprints.cmfri.org.in/12914/1/National%20Seminar%20on%20Conservation%20and%20Sustainability%20of%20Aquatic%20Resources_CSAR_2018_C%20Kalidas_B%20Santhosh.pdf

Studies on the controlled rearing and ideal range of Environmental Conditions required for the mass production of selected marine copepods as Live-Feed for marine fish larvae

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