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Morphometry, Length-Weight Relationship and Relative Condition Factor of Marine Catfish, Osteogeneiosus militaris (Linn., 1758) of Mumbai Waters


Affiliations
1 ICAR-Central Inland Fisheries Research Institute, KOLKATA (W.B.), India
2 Department of Fishery Technology, College of Fisheries (O.U.A.T.) Rangailunda, BERHAMPUR (ODISHA), India
3 Department of Fishery Engineering and Technology, College of Fisheries (O.U.A.T.) Rangailunda, BERHAMPUR (ODISHA), India
4 Department of Fish Nutrition, College of Fisheries (O.U.A.T.) Rangailunda, BERHAMPUR (ODISHA), India
     

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The meristic and morphometric characters as well as the length-weight relationship and condition factor of the marine cat fish, Osteogeneiosus militaris (Linn.,1758) off Mumbai waters was investigated. Based on the meristic characters, the fin formula can be written as; DI,7, PI,10-11, V6, A18-22, C17-19. The morphometric characters of indicated high degree of correlation among the compared characters. The length-weight relationship of the species is given as, W = 0.000006 L3.05 for females, W = 0.000008 L3.01 for males and W = 0.000007 L3.03 for pooled sexes which implies that the species found off Mumbai waters has isometric growth. The co-efficient of co-rrelation between length and weight was found to be very high (r = 0.981, 0.962 and 0.977) for females, males and sexes pooled, respectively. The condition factor was found to be higher for females than those of the males. This indicates that females are in better condition compared to males. The seasonal variation observed in the condition factor for both the sexes could be related to reproductive cycle and feeding.

Keywords

Morphometry, Length-Weight Relationship, Relative Condition Factor, Osteogeneiosus militaris.
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  • Morphometry, Length-Weight Relationship and Relative Condition Factor of Marine Catfish, Osteogeneiosus militaris (Linn., 1758) of Mumbai Waters

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Authors

P. K. Parida
ICAR-Central Inland Fisheries Research Institute, KOLKATA (W.B.), India
B. K. Khuntia
Department of Fishery Technology, College of Fisheries (O.U.A.T.) Rangailunda, BERHAMPUR (ODISHA), India
B. K. Pati
Department of Fishery Engineering and Technology, College of Fisheries (O.U.A.T.) Rangailunda, BERHAMPUR (ODISHA), India
B. Sahu
Department of Fish Nutrition, College of Fisheries (O.U.A.T.) Rangailunda, BERHAMPUR (ODISHA), India

Abstract


The meristic and morphometric characters as well as the length-weight relationship and condition factor of the marine cat fish, Osteogeneiosus militaris (Linn.,1758) off Mumbai waters was investigated. Based on the meristic characters, the fin formula can be written as; DI,7, PI,10-11, V6, A18-22, C17-19. The morphometric characters of indicated high degree of correlation among the compared characters. The length-weight relationship of the species is given as, W = 0.000006 L3.05 for females, W = 0.000008 L3.01 for males and W = 0.000007 L3.03 for pooled sexes which implies that the species found off Mumbai waters has isometric growth. The co-efficient of co-rrelation between length and weight was found to be very high (r = 0.981, 0.962 and 0.977) for females, males and sexes pooled, respectively. The condition factor was found to be higher for females than those of the males. This indicates that females are in better condition compared to males. The seasonal variation observed in the condition factor for both the sexes could be related to reproductive cycle and feeding.

Keywords


Morphometry, Length-Weight Relationship, Relative Condition Factor, Osteogeneiosus militaris.

References