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Publication Type
Conference Proceedings
UWI Author(s)
Author, Analytic
Fender, Andrea B.; Hyslop, Eric J.
Author Role
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Author Affiliation
Department of Life Sciences
Paper/Section Title
Evaluation of the benthic macroinvertebrate fauna of Rio Cobre and selected tributaries, with special emphasis on the Family Thiaridae, Gastropoda [Abstract]
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Proceedings Title
Proceedings of the Sixth Conference, Faculty of Pure and Applied Sciences edited by Daniel Coore and Robert J.Lancashire.
Date of Meeting
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Place of Meeting
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Place of Publication
Kingston, Jamaica
Publisher Name
Faculty of Pure and Applied Sciences, University of the West Indies
Date of Publication
2003
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Volume ID
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Extent of Work
39
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Abstract
The physico- chemical environment (bedrock composition; water quality) was examine in relation to the density and distribution of the benthic macroinvertebrate fauna in the Rio Cobre and selected tributaries during the period of June 1998 to December 1999. Thiara granifera (Lamarck 1822) & Melanoides tuberculata (Muller 1774), non-indigenous aquatic snails from the family Thiaridae, dominated the benthic fauna. In some tributaries, T. granifera made up about 80% of the standing crop and inhabited all sites, in contrast M. tuberculata was present only at selected was present only at selected sites in low numbers. Next to the thiarid snails, trichopterans were the most abundant however, other representative orders inclubed Odonata, Ephemeroptera, Diptera and Coleoptera. Studies of the Bedrock type, limestonevs. Volcanic, revealed that invertebrate population diversity correlated with water hardness(r=0.94) at some sites however, densities were probably related to species preference for substrata. Other physicochemical parameters assessed such as dissolved oxygen, pH, temperature and conductivity did not appear to play a significant role in the distribution of the benthic macroinvertebrate fauna.....
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