Marine wood-borers of Andaman-Nicobar islands with notes on control measures and on their distribution along the east coast of India

L.N. Santhakumaran, V.V. Srinivasan

Abstract



Marine wood-borers of Andaman-Nicobar islands, collected from destroyed timber structures, were: Bankia campanellata, B. gracilis, B. rochi, Nausitora dunlopei, N. hedleyi, Nototeredo edax, Spathoteredo obtusa, Dicyathifer manni, Lyrodus pedicellatus, Teredo furcifera and Martesia striata. Of these, B. gracilis, is a new record from Indian waters, and S. obtusa is reported for the first time since it was first recorded from Nicobar in 1945. Faunal composition of marine wood-borers of Andaman-Nicobar islands and east coast of India are compared. Of the 25 species (i.e. 14 Teredinidae, 2 Pholadidae, 2 Sphaeromatidae and 7 Limnoriidae), so far reported from Andaman-Nicobar coasts, 18 species (12 Teredinidae and 2 each of Pholadidae, Sphaeromatidae and Limnoriidae) occur along the east coast of India B. camponellata, B. rochi, Nausitora dunlopei, Spathoteredo obtusa, Dicyathifer manni, Bactronophorus thoracites, Lyrodus pedicellatus, Teredo furcifera, Martesia striata and Sphaeroma terebrans constitute the predominant marine borers of Andaman-Nicobar Islands. All these species (except Spathoteredo obtusa), together with B. carinata and Sphaeroma annandalei, are important along the east coast of India. The distribution patterns of these borers in different habitats (test panels, timber structures, logs and mangroves) and methods for controlling biodegradation of timber in Andaman waters are discussed

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