Autor(es): Dieng Hamady; Rajasaygar Sudha; Ahmad Abu Hassan; Md Rawi Che Salmah; Ahmad Hamdan; Satho Tomomitsu; Miake Fumio; Zuharah Wan Fatma; Fukumitsu Yuki; Saad Ahmad Ramli; Abdul Hamid Suhaila; Vargas Ronald Enrique Morales; Ab Majid Abdul Hafiz; Fadzly Nik; Abu Kassim Nur Faeza; Hashim Nur Aida; Ghani Idris Abd; Abang Fatimah Bt; AbuBakar Sazaly

Resumo: Despite major insecticide-based vector control programs, dengue continues to be a major threat to public health in urban areas. The reasons for this failure include the emergence of insecticide resistance and the narrowing of the spectrum of efficient products. Cigarette butts (CBs), the most commonly discarded piece of waste, also represent a major health hazard to human and animal life. CBs are impregnated with thousands of chemical compounds, many of which are highly toxic and none of which has history of resistance in mosquitoes. This study was performed to examine whether exposure to CB alters various biological parameters of parents and their progeny. We examined whether the mosquito changes its ovipositional behaviors, egg hatching, reproductive capacity, longevity and fecundity in response to CB exposure at three different concentrations. Females tended to prefer microcosms containing CBs for egg deposition than those with water only. There were equivalent rates of eclosion success among larvae from eggs that matured in CB and water environments. We also observed decreased life span among adults that survived CB exposure. Extracts of CB waste have detrimental effects on the fecundity and longevity of its offspring, while being attractive to its gravid females. These results altogether indicate that CB waste indirectly affect key adult life traits of Aedes aegypti and could conceivably be developed as a novel dengue vector control strategy, referring to previously documented direct toxicity on the larval stage. But this will require further research on CB waste effects on non-target organisms including humans.

Palavras-Chave: Cigarette butt extract; Sublethal effects; Aedes aegypti; Control

Imprenta: Acta Tropica, v. 130, p. 123-130, 2014

Identificador do objeto digital: 10.1016/j.actatropica.2013.11.001

Descritores: Aedes aegypti - Dengue ; Aedes aegypti - Public health

Data de publicação: 2014

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