Fishery and biology of the octopus, Cistopus indicus (Orbigny, 1840) fromMumbai waters
2011
Sundaram, Sujit | Deshmukh, V D
Fishery of Cistopus indicus by trawlers at New Ferry Wharf from 2000 to 2009 in Mumbai waters isdescribed. The catch showed an increasing trend up to 2006 and declined thereafter. The catch rangedfrom 2 t (2002) to 324 t (2006) and the catch rate from 0.002 kg/hr (2002) to 0.181 kg/hr (2006). Therelationship between dorsal mantle length (DML) and total body weight (TBW) for males was TBW =0.001053 * DML2.69321 and for females was TBW = 0.009 * DML2.19221. Fish formed the major food itemof both the sexes. Majority of the males in the landings was in mature stage, while the maximum numberof females was gravid. The size (DML) at 50% maturity for females was estimated as 82.7 mm. Thediameter of mature ova ranged from 2 to 6 mm and fecundity was 13,260
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