ECOLOGICAL MAPPING OF SIMULIUM SPECIES IN TWO ONCHOCERCIASIS-ENDEMIC COMMUNITIES OF CROSS RIVER STATE, NIGERIA
Authors: Amaka Chidinma Okorie
DOI: 10.5281/zenodo.17377899
Published: October 2024
Abstract
<p><em>The distribution of Simulium species was studied at 2 breeding sites in Ugbem and Ukwepeyiere Communities after 10 rounds of Ivermectin distribution. At each breeding site, 2 fly catchers worked alternately for 4 hours, both giving a total of 8 hours from 8 a.m. to 3 p.m., each day. Flies were caught on 3 consecutive days, each month, from 8 a,m. to 3 p.m. between January and June, 2008. A total of 3895 Simulium flies were caught and identified using morphologic characteristics as Simulium sirbanum(70.5%) and S. yahense (29.5). A total of 12.1% of both species were parous while 87.9 % were nulliparous flies. Generally, more flies were caught in the morning (7 a.m. to 11 a.m.) than afternoon (12 noon to 3 p.m.) hours, in both dry and rainy seasons. No larva of Onchocerca volvulus was detected after dissection of both parous and nulliparous flies. </em></p> <p><em>This study has identified, for the first time, the species of Simulium flies which are prevalent in the study area</em></p>
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