Summary of Abstract Submission

Abstract Submission No. IO50-04-0008PresentationPoster

THE FOOD AND FEEDING HABITS OF OF THE INDIAN MACKEREL, RASTRELLIGER KANAGURTA (CUVIER) AT RATNAGIRI.

Dr.Madhura Mukadam*1, Dr. Arvind Kulkarni1, Dr. Kishor Sukhatankar1

1 Gogate Jogalekar College, Ratnagiri, India

ABSTRACT :

The present study investigated feeding habits and diet composition of Mackerel, Rastrelliger kanagurta by regular monthly collection throughout 13 months from April, 2014 to April, 2015 in Ratnagiri, west coast of India. Mackerel is considered as one of the valuable fishes in the Ratnagiri. The 350 specimens of Rastrelliger kanagurta were examined. The highest and lowest fork length and body weight was 25 cm and 16.7 cm and 141.23 and 60.94 g respectively. Studies have showed that this fish, having the Relative length of Gut RLG = 0.780.004, is mainly carnivorous (meat eater) proven by the fact that more than 85% of its stomach contents are fish. The CV=0.53% indicates the middle alimentary of this fish. This species was found to be mainly feed on zooplankton than the phyoplankton. The feeding intensity was higher during October followed by November and poor feeding during April to July. The fullness index (FI) increases in February and July before spawning and decreases in March and September during spawning