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Potential of Lanistes varicus in limiting the population of Bulinus truncatus.
BMC Research Notes 2017 October 26
OBJECTIVE: To determine the ability of the Ampullariid, Lanistes varicus to prey on egg masses and juveniles of Bulinus truncatus snails, an intermediate host of urogenital schistosomiasis in West Africa.
RESULTS: Lanistes varicus was found to feed voraciously on egg masses and juveniles of Bulinus truncatus, consuming all egg masses (20 -25) exposed to it within 24 h. Also, 95-100% of 1-2 days old B. truncatus snails exposed to a single L. varicus snail was consumed within 4 days. The presence of L. varicus snails greatly increased mortality in B. truncatus with mortality increasing with increase in the number of L. varicus snails in the mixture of the two snail species. The current study has demonstrated under laboratory conditions that the Ghanaian strain of L. varicus has the potential of limiting the population of B. truncatus snails, and contribute to the control of urogenital schistosomiasis in West Africa.
RESULTS: Lanistes varicus was found to feed voraciously on egg masses and juveniles of Bulinus truncatus, consuming all egg masses (20 -25) exposed to it within 24 h. Also, 95-100% of 1-2 days old B. truncatus snails exposed to a single L. varicus snail was consumed within 4 days. The presence of L. varicus snails greatly increased mortality in B. truncatus with mortality increasing with increase in the number of L. varicus snails in the mixture of the two snail species. The current study has demonstrated under laboratory conditions that the Ghanaian strain of L. varicus has the potential of limiting the population of B. truncatus snails, and contribute to the control of urogenital schistosomiasis in West Africa.
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