Genetic cataloguing of Octopus species from coastal waters of Kerala using molecular markers

Vargheese, Sneha and Kathirvelpandian, A and Sajikumar, K K and Basheer, V S and Lal, Kuldeep Kumar (2020) Genetic cataloguing of Octopus species from coastal waters of Kerala using molecular markers. In: Marine Ecosystem Challenges & Opportunities (MECOS 3). Convenor, MECOS3, Kochi, p. 316. ISBN 978-93-82263-37-1

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Abstract

Octopuses are one of the commercially important fishery resource form the Indian coast and there is a targeted fishery for octopus in many fish landing centres in Kerala. There are lot of taxonomic ambiguities within the octopus species and the accurate identification of species is of prior importance in conserving such vulnerable species. With a view to identify and genetically catalogue the octopus species of Kerala coast, specimens were collected from different landing centres of the region. Molecular characterization was done with partial sequence information of mitochondrial gene Cytochrome C oxidase-I (COI) gene. Total 17 specimens of 7 species were collected from 4 locations and COI sequences were generated (650 bp). 7 species included viz, three ocellate octopus, belonging to the genus Amphioctopus; (Amphioctopus neglectus. A. marginatus and A. rex), two from genus Cistopus: (Cistopus Indicus and C. taiwanicus), one each from Octopus vulgaris and Callistoctopus macropus. Both genus of Cistopus and Amphioctopus showed the intra and inter specific distance ranging from 0.0-1.0 % and 7.0-21.0 %, respectively. Phylogenetic analysis using maximum likelihood approach revealed that all the genera of the family Octopodidae are monophyletic.

Item Type: Book Section
Uncontrolled Keywords: Octopus
Subjects: Molluscan Fisheries > Cephalopods
Molluscan Fisheries
Fish Genetics
Divisions: CMFRI-Kochi > Marine Capture > Molluscan Fisheries Division
Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Molluscan Fisheries Division
CMFRI-Kochi > Marine Capture > Molluscan Fisheries Division
Subject Area > CMFRI-Kochi > Marine Capture > Molluscan Fisheries Division
Depositing User: Arun Surendran
Date Deposited: 04 Oct 2023 04:57
Last Modified: 04 Oct 2023 04:57
URI: http://eprints.cmfri.org.in/id/eprint/17516

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