Influence of temperature on the development of Schistosoma haematobium in Bulinus truncatus

TitleInfluence of temperature on the development of Schistosoma haematobium in Bulinus truncatus
Publication TypeJournal Article
Year of Publication1989
AuthorsBlankespoor HD, Babiker SM, Blankespoor CL
JournalJournal of Medical and Applied Malacology
Volume1
Pagination123-131
KeywordsWATER
Abstract

Young Bulinus truncatus snails were exposed to miracidia of Schistosoma haematobium and then subjected to temperatures at 3 degree increments ranging from 8-35C. Snails maintained at 29 had patent infections within 28 days. Those kept at lower temperatures had a correspondingly longer prepatency period. Snails reared at 8, 11, and 35 lost their infections. Prevalence of infection was the highest in snails maintained from 20-32. Mortality of B. truncatus was the heaviest at the extreme range of temperatures and with snails that contained the highest prevalence of infection. Snails grew the fastest and laid eggs earliest at 26, 29 and 32. These data demonstrate that water temperature in nature directly affects the timing of transmission of S. haematobium from snail to humans in the Gezira Province of Sudan.