Studies on the ecological factors of Schistosoma intermediate host in relation to the transmission of urinary schistosomiasis in Owena Reservoir Area, Ondo State, Southwest, Nigeria

*1B.J. Peletu, 2I.E. Ofoezie and 3R.F Olaniyan

ADEYEMI COLLEGE OF EDUCATION, ONDO

Email Address:olaniyan4real_06@yahoo.com

Phone: +234 (806) 008-3658

ABSTRACT
During the twenty-four (August 2013 – July 2015) study eight stations (sites) of diverse ecological characteristics were selected along the Owena Reservoir and monitored for snails species diversity, distribution and infection patterns, physic-chemical properties of H2O and macrophyte types and coverage in relation to the transmission of urinary schistosomiasis. The results of the study showed that all the snail species correlated positively with alkalinity conductive, negatively with air temperature. Bulinus globosus was very highly correlated positively (P<0.05) with Ludwiga erecta, Ludwiga decurrens, Commelina afircna and Berberis calamus but correlated significantly negatively (p<0.001) with panicum maximus, Ervatomia hirta, Bulinus truncatus was very highly correlated positively (p<0.005) with Aspillia Africana, Lugwiga decurrens, Emilia occinina, Crosus sativue but correlated significantly negatively (p<0.001) with Ludwiga erecta, Panicum maximus and Commelina Africana. Out of the eight sites studied, site 4 in Kajola community had the highest 53(8.5%) infection rate that is out of the 624 Bulinus globosus collected from this site 4, only 53 were infected, while Embankment/Dam (site 8) had the least 2 (0.6%) of 317 collected. However, the overall infection rate among Bulinus globosus, the intermediate snail host species for Schistosoma haematobium was 136 (3.2%) out of 4258 collected. From the above findings, site 4 in Kajola community is the major transmission site in the study area.

Keywords: Physico-chemical parameters, hydromacrophytes, urinary schistosomiasis, Owena Reservoir Area, Ondo State, Southwest Nigeria.