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Screwworm, Cochliomyia hominivorax , eradication in Texas: effects of climate and strains of sterile flies
Author(s) -
Krafsur E. S.
Publication year - 1985
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/j.1570-7458.1985.tb03489.x
Subject(s) - cochliomyia hominivorax , calliphoridae , biology , outbreak , sterile insect technique , veterinary medicine , pest analysis , ecology , larva , botany , virology , medicine
Screwworm case incidence in a meteorologically and ecologically homogeneous region of Texas being treated with sterile flies was analyzed. Data from 19 years suggested that annual cases were not correlated with temperatures, rainfall, or crop moisture index. Cases in winter and summer were only minimally influenced by temperatures. No statistical relation between screwworm outbreaks and the meteorological variables was found. No‐convincing relation was found between strains of sterile flies released and screwworm cases. These data suggest that execution of the sterile male technique was decisive in the numbers of cases realized. The ultimate eradication of screwworms from the region is strong indication that the sterile male technique is robust and that intrinsic reproductive isolating mechanisms did not become prevalent among screwworm flies. Résumé L'élimination de Cochliomyia hominivorax Coq. (Dipt. Calliphoridae) au Texas: effets du climat et des souches de mouches stériles . L'analyse de la présence de cohortes de larves de C. hominivorax dans une région climatiquement et écologiquement homogène du Texas, où des populations sont activies toute l'année ne révèle aucune corrélation entre les pullulations, les pluies, la température ou le déficit d'évaporation et l'humidité excessive. Aucune corrélation n'a pu être décelêe entre les lignées de mouches stériles libérées et les cohortes de larves. Ces résultats suggèrent que la technique d'utilisation des mâles stériles est bonne et que des mécanismes intrinsèques d'isolement reproductif ne sont pas encore devenus importants chez C. hominivorax .