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Title: Faunal composition of metazoan meiofauna from the southeast continental shelf of India
Authors: Ansari, K.G.M.T.
Lyla, P.S.
Khan, S. Ajmal
Keywords: Faunal composition
Metazoan meiobenthos
Continental shelf
Issue Date: Oct-2012
Publisher: NISCAIR-CSIR, India
Abstract: Analysis of the faunal composition of meiobenthos <span style="mso-bidi-font-weight:bold">in the sediments of the southeast continental shelf of India <span style="mso-bidi-font-weight: bold">showed nine taxonomic groups. Among these, nematoda, copepod and foraminifera were dominant. As many as 192 species of free-living marine nematodes, 39 species of harpacticoid copepods and 39 species of foraminiferans were identified. Other groups of metazoans <span style="mso-bidi-font-weight: bold">encountered were<b style="mso-bidi-font-weight:normal"> </b>polychaetes, ostracods, isopods, cumaceans, tanaidacea and tardigarda. Free-living marine nematodes <span style="mso-bidi-font-weight:bold">constituted <span style="mso-bidi-font-weight:bold">57.63% of the total meiofaunal organisms.<span style="mso-bidi-font-weight:bold"> Harpacticoid copepods, foraminiferans and others constituted <span style="mso-bidi-font-weight: bold">14.77%, 13.89% and 13.71% respectively<span style="mso-bidi-font-weight: bold">. Xyalidae, Desmodoridae, Comesomatidae and Linhomoeidae were the most dominant families of nematodes. <span style="mso-bidi-font-weight:bold">These families were represented in all the depths. The abundance of nematodes showed a <span style="mso-bidi-font-weight:bold">decrease with increase in depth (207.7±19.2 <span style="mso-bidi-font-weight:bold">no. of ind. /10 cm<sup>2 </sup>at 30-50 m depth to 34.6±6.5<b style="mso-bidi-font-weight:normal"> </b><span style="mso-bidi-font-weight:bold">no. of ind. /10cm<sup>2</sup> at >175 m depth). Similarly the number species also decreased with increase in depth (from 151 species at 30-50 m depth to 58 species at >175 m depth). More number of species were found in the <span style="mso-bidi-font-weight:bold">Southern part of the study area than the Northern part. </span></span></span></span></span></span></span></span></span></span></span></span></span>
Description: 457-467
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Appears in Collections:IJMS Vol.41(5) [October 2012]

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