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Length‐weight relationships of five needlefish species from Kerala waters, south‐west coast of India
Author(s) -
Roul S. K.,
Retheesh T. B.,
Ganga U.,
Abdussamad E. M.,
Rohit P.,
Jaiswar A. K.
Publication year - 2018
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.13527
Subject(s) - biology , allometry , fishery , fish <actinopterygii> , zoology , ecology
Summary Length‐weight relationships ( LWR s) were estimated for five needlefish species such as Ablennes hians (Valenciennes, 1846), Tylosurus crocodilus (Péron & Lesueur, 1821), Tylosurus acus melanotus (Bleeker, 1850), Strongylura leiura (Bleeker, 1850), and Strongylura strongylura (van Hasselt, 1823). Specimens were collected on weekly basis from Cochin Fisheries Harbour (Lat. 09056′327″N, Long. 76015′764″E), Munambam Fisheries Harbour (Lat. 10010′965″N, Long. 76010′258″E), Kalamukku (Lat. 09059′924″N, Long. 76014′564″E) and Chellanam (Lat. 09047′950″N, Long. 76016′551″E), between October 2015 to August 2017. Fish were captured by traditional long liner (hook no. IX ‐ XIV ) and ring seiner (mesh size 8–24 mm). The estimated allometric co‐efficient b values ranged from 3.063 ( Tylosurus acus melanotus ) to 3.962 ( Strongylura leiura ) and r 2 values ranged from 0.850 ( Tylosurus acus melanotus ) to 0.992 ( Tylosurus crocodilus ). All the LWR s were highly significant, with p < .001. In addition, the study provides the first estimate of LWR for Tylosurus acus melanotus and new estimate for other four species of needlefish.