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Publication Type
Conference Proceedings
UWI Author(s)
Author, Analytic
Martin, Tamara R.; Wolf, Klaus W.; Hyslop, Eric J.
Author Role
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Author Affiliation
Department of Life Sciences
Paper/Section Title
Habitat partitioning, diet and radular structure of neritina punctulata, Bussu; in two Portland rivers [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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Location in Work
63
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Abstract
Neritina punctulata or “Bussu” is a freshwater gastropod of the family Neritdade. Most of the members of the family Neritidae are tropical marine snails but some inhabits freshwater N. punctulata, unlike other Neritids, is limited to the Caribbean and displays limited distribution patterns in the lotic habitats in which it is found. On the island of Jamaica, Bussa is only found in some of the rivers in the parish of Portland. Bussa forms an important part of the diet of the inhabitants of Portland and in recent times has become important to the tourism industry of that parish, not much published information exist on its biology. The present presents data on the distribution patterns, shell size categories and diet of Neritina punctulata fro the Spanish and Swift Rivers and determines the nature of the relationship with Thiara granifera (Lamarck). Thiara gravifera is an exotic freshwater gastropod found in various freshwater systems throughout Jamaica and also in the same rivers in Portland as Neritina punctulata. The two species appear to occupy different sections of these rivers. Psysico-chemical parameters and quadrat samples of both snail species were collected from July2001 from both rivers at monthly intervals. The gut contents of samples of N. punctulata and T granifera were analysed in the laboratory. Electron micrograph study of the radula of N. punctulata was also undertaken. Preliminary analysis shows that N. punctulata is distributed in the middle section of the sites on Swift River throughout its course while T.granifera is mainly found close to the river banks. In the Spanish River, however T.granifera, is distributed throughout the river while N. punctulata is distributed mainly in the lower section of the river. N. punctulata has a rhipidoglossate radula the facilitates its herbivorous of a variety of algae and diatoms. The detailed structure of the radula and its possible functioning are discussed.....
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