Blue ring Octopus, Hapalochlaena nierstraszi, from the Bay of Bengal along the Chennai Coast

Sethi, S N and Rudramurthy, N (2013) Blue ring Octopus, Hapalochlaena nierstraszi, from the Bay of Bengal along the Chennai Coast. Fishing Chimes, 33 (8). pp. 82-83.

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Abstract

On 12-08-2012, a rare occurrence of Blue ring octopus {Hapalochlaena nierstraszi (Adam 1938)), with a length of 82-165 mm and weight of 5.5-18 g was recorded for the first time at Kasimedu Fisheries Harbour , Chennai. It was caught by Trawl net gear at a depth of 20-30 m in Bay of Bengal along the Chennai Coast. There are about at least ten species of tiny blue-ringed octopus, which, ironically for their size, are the most deadly of ail cephalopods,but only four have been formally named. All these are inhabitants of Asian-pacific waters. These are; Greater Blue-ringed Octopus {Hapalochlaena lunulata), Lesser Blue-ringed Octopus or Southern Blue-ringed Octopus {Hapalochlaena maculosa), Blue-lined Octopus {Hapalochlaena fasciata) and Hapalochlneno nierstraszi. The common names come from the bright blue rings that appear when they are alarmed or attacked.

Item Type:	Article
Uncontrolled Keywords:	Blue ring Octopus; Hapalochlaena nierstraszi; Bay of Bengal; Chennai Coast
Subjects:	Molluscan Fisheries > Cephalopods
Divisions:	CMFRI-Madras (Chennai)
Depositing User:	Arun Surendran
Date Deposited:	16 Jul 2013 10:37
Last Modified:	09 Sep 2015 15:54
URI:	http://eprints.cmfri.org.in/id/eprint/9270

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