Effects of irradiation, presence of females, and sugar supply on the longevity of sterile males Aedes albopictus (Skuse) under semi-field conditions on Reunion Island
Oliva, Clelia F. | Maier, Marco J. | Gilles, Jeremie R. L. | Jacquet, Maxime | Lempérière, Guy | Quilici, Serge | Vreysen, Marc J. B. | Schooneman, François | Chadee, Dave D. | Boyer, Sébastien | Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC) ; Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [Occitanie]) | Centre de Recherche et de Veille sur les Maladies Émergentes dans l'Océan Indien (CRVOI) ; Université de La Réunion (UR) | Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | Peuplements végétaux et bioagresseurs en milieu tropical (UMR PVBMT) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université de La Réunion (UR) | EFS
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Показать больше [+] Меньше [-]Английский. BACKGROUND: The development of the sterile insect technique (SIT) for reducing populations of Aedes albopictus (Skuse), (the vector of Chikungunya and Dengue fever), was studied in Reunion Island. For some mosquito species the sterilization process and mating activity may alter male survival. Most previous studies were carried out in the laboratory and may inadequately reflect the field situation. We conducted a semi-field experiment to evaluate the impact of sugar supply and mating activity under natural climatic conditions on wild and sterile male Ae. albopictus longevity, using large cages set up in an open clearing between trees and shrubs in Reunion Island. RESULTS: Wild males had a mean longevity of 15.5 days in the absence of females and with an immediate sugar supply; longevity in sterile males was similar. The presence of females greatly reduced both wild and especially sterile male lifespan; however, an immediate sugar supply could counteract this effect and allow sterile males to live an average of 11.6 days. CONCLUSION: The outcomes indicate that sugar feeding could compensate for sterilization-induced damage, and that mating activity is not deleterious for well-fed males. This study stresses the critical importance of providing suitable sugar sources prior to release during SIT programmes.
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