[Competitive Adaptation of Aedes albopictus, Skuse 1894 in the Presence of Aedes aegypti Linné 1862 in Temporary Larvae Breeding Sites and in the Context of Pyrethroids Resistance in Douala(Cameroon)].

Autor:	Ngo Hondt OE; Laboratoire de biologie et physiologie des organismes animaux, département de biologie et organismes animaux, faculté des sciences, université de Douala, BP 24157 Douala, Cameroun., Akona Ntonga P; Laboratoire de biologie et physiologie des organismes animaux, département de biologie et organismes animaux, faculté des sciences, université de Douala, BP 24157 Douala, Cameroun., Ngo Hiol JV; Laboratoire de biologie et physiologie des organismes animaux, département de biologie et organismes animaux, faculté des sciences, université de Douala, BP 24157 Douala, Cameroun., Nko Edou D; Laboratoire de biologie et physiologie des organismes animaux, département de biologie et organismes animaux, faculté des sciences, université de Douala, BP 24157 Douala, Cameroun., Tonga C; Centre d'entomologie médicale et vétérinaire, université Alassane-Ouattara, Bouaké, Côte d'Ivoire., Foko Dadji GA; Laboratoire de zoologie, faculté des sciences, département de biologie et physiologie animale, université de Yaoundé-I, BP 812 Yaoundé, Cameroun., Kekeunou S; Laboratoire de zoologie, faculté des sciences, département de biologie et physiologie animale, université de Yaoundé-I, BP 812 Yaoundé, Cameroun.
Jazyk:	francouzština
Zdroj:	Bulletin de la Societe de pathologie exotique (1990) [Bull Soc Pathol Exot] 2020; Vol. 113 (2), pp. 79-87.
DOI:	10.3166/bspe-2020-0113
Abstrakt:	Aedes albopictus and Aedes aegypti are two potential vectors of arboviruses in Douala. Knowing their breeding behaviour and insecticide resistance status would allow for better design of control activities. Mosquito larvae and nymphs were captured from breeding sites from July to September 2017, in Ndogbong, PK21 and Yassa, three neighbourhoods of the city of Douala, with ecological peculiarities. They were reared to adults and then identified to species. Female mosquitoes aged 3 to 5 days, not fed on blood, were tested for pyrethroid sensibility. Overall, 144 breeding artificial and natural sites were identified in the 3 neighbourhoods. A. albopictus was the single species found in most of the breeding sites (64.6%), whereas A. aegypti was found only in 4 sites (2.8%). Both species lived sympatrically in 47 sites (32.6%). Morphological identification of 8,160 adults revealed a significantly higher abundance of A. albopictus compared with A. aegypti (88.8% versus 11.2%). Insecticide resistance test with deltamethrin and permethrin revealed resistance in female A. aegypti and A. albopictus from Ndogbong and Yassa (mortality rates ‹ 92%). A. albopictus shows better adaptation to artificial breeding sites in Douala and their resistance to recommended insecticides calls for new insecticidal molecules. Competing Interests: The authors have no conflicts of interest to declare
Databáze:	MEDLINE
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