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Title: Colonized Aedes albopictus and its sexual performance in the wild: Implications for SIT technology and containment
Authors: Dieng Hamady
Norrafiza Binti Ruslan
Abu Hassan Ahmad
Che Salmah Md Rawi
Hamdan Ahmad
Tomomitsu Satho
Fumio Miake
Wan Fatma Zuharah
Yuki Fukumitsu
Ahmad Ramli Saad
Sudha Rajasaygar
Ronald Enrique Morales Vargas
Abdul Hafiz Ab Majid
Nik Fadzly
Idris Abd Ghani
Sazaly Abubakar
Universiti Sains Malaysia
Fukuoka University
Mahidol University
Universiti Kebangsaan Malaysia
University of Malaya
Keywords: Immunology and Microbiology;Medicine
Issue Date: 18-Jul-2013
Citation: Parasites and Vectors. Vol.6, No.1 (2013)
Abstract: Background: Mating is a physiological process of crucial importance underlying the size and maintenance of mosquito populations. In sterile and incompatible insect technologies (SIT and IIT), mating is essential for mass production, persistence, and success of released individuals, and is a central parameter for judging the effectiveness of SIT/IIT programs. Some mosquitoes have an enormous reproductive potential for both themselves and pathogens and mating may contribute to persistence of infection in nature. As Aedes albopictus can transmit flaviviruses both sexually and horizontally, and as infected insects are usually derived from laboratory colonies, we investigated the implications of mating between a long-term laboratory colony of Ae. albopictus and wild populations. Methods. Through a series of mating experiments, we examined the reproductive outcomes of sexual cross-affinity between laboratory-raised and wild adults of Ae. albopictus. Results: The results indicated appreciable mating compatibility between laboratory-reared and wild adults, and equivalent levels of egg production among reciprocal crosses. We also observed comparable larval eclosion in lab females mated with wild males, and increased adult longevity in female offspring from wild females|× |laboratory males crosses. Conclusions: Taken together, these data suggest that Ae. albopictus can preserve its reproductive fitness over a long period of time in the laboratory environment and has valuable attributes for SIT application. These observations together with the ability to successfully inseminate heterospecific females indicate the potential of Ae. albopictus to act as an ecological barrier if non-sterilized males are massively released in areas occupied by Aedes aegypti. The observed substantial reproductive fitness combined with the capability to reproduce both, itself and viruses illustrates the potential of Ae. albopictus to pose a serious threat if infected and released accidentally. © 2013 Hamady et al.; licensee BioMed Central Ltd.
ISSN: 17563305
Appears in Collections:Scopus 2011-2015

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