Indian Journal of Geo-Marine Sciences

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New Distribution Record of Heterobranchs (Mollusca : Gastropoda) from Keelakarai Coast, Gulf of Mannar, India


Affiliations
1 Zoological Survey of India, SbRC, Canning, West Bengal – 743 329, India
2 Zoological Survey of India, M-Block, New Alipore, Kolkata – 700 053, India

An extensive survey was conducted from 2019 to 2020 in the sub-tidal regions of the Gulf of Mannar, Southeast coast of India. A total of 20 species of heterobranchs was recorded from the Keelakari group of Islands in the Gulf of Mannar coast using SCUBA gears. Among these, eight species are reported for the first time from the Gulf of Mannar Marine Biosphere Reserve (Aegires villosus, Doriprismatica atromarginata, Glossodoris pallida, Glossodoris rufomarginata, Goniobranchus trimarginatus, Gymnodoris citrina, Hypselodoris infucata, and Tubulophilinopsis gardineri), and one species namely, Aldisa andersoni is a new record to the Indian water. The comprehensive description, morphometric characters and distribution are discussed herewith.
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  • New Distribution Record of Heterobranchs (Mollusca : Gastropoda) from Keelakarai Coast, Gulf of Mannar, India

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Authors

J. S. Yogesh Kumar
Zoological Survey of India, SbRC, Canning, West Bengal – 743 329, India
C. Venkatraman
Zoological Survey of India, M-Block, New Alipore, Kolkata – 700 053, India
C. Raghunathan
Zoological Survey of India, M-Block, New Alipore, Kolkata – 700 053, India

Abstract


An extensive survey was conducted from 2019 to 2020 in the sub-tidal regions of the Gulf of Mannar, Southeast coast of India. A total of 20 species of heterobranchs was recorded from the Keelakari group of Islands in the Gulf of Mannar coast using SCUBA gears. Among these, eight species are reported for the first time from the Gulf of Mannar Marine Biosphere Reserve (Aegires villosus, Doriprismatica atromarginata, Glossodoris pallida, Glossodoris rufomarginata, Goniobranchus trimarginatus, Gymnodoris citrina, Hypselodoris infucata, and Tubulophilinopsis gardineri), and one species namely, Aldisa andersoni is a new record to the Indian water. The comprehensive description, morphometric characters and distribution are discussed herewith.