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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Jul 2010, 31 (4)                                                                                                             Back

Abstract _26

Macroinvertebrate diversity of Veli and Kadinamkulam lakes, South Kerala, India


C. Latha and V. Salom Gnana Thanga*

Department of Environmental Sciences, University of Kerala, Kariavattom, Thiruvananthapuram - 695 581, India

(Received: April 21, 2009; Revised received: August 10, 2009; Accepted: August 31, 2009)


Abstract: The diversity and distribution pattern of benthic macroinvertebrates in two backwaters viz., Veli and Kadinamkulam of Kerala were assessed using diversity indices. The samples were collected once in three months for a period of two years from six sampling sites (K1, K2, K3, V1, V2 and V3) and community variations were analyzed. Overall, 24 families were identified represented by mollusca, annelida and arthropoda (crustaceans and insects). Among this, dominant taxon was Mytilidae of molluscan family and site-wise dominance was maximum in sites V1 and V2. Richness and abundance were highest in site V2 and lowest in site K2. Diversity index ranged from 0.27 (K2) to 2.33 (V1). The diversity and distribution patterns of certain species were clearly related to water quality as evident from the present study.

Key words: Benthic macroinvertebrates, Diversity, Species richness

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