Zettel Nalen Catherine M, Allan Sandra A, Becnel James J, Kaufman Phillip E
United States Department of Agriculture-Agricultural Research Service Center for Medical, Agricultural, and Veterinary Entomology, Gainesville, FL 32608, USA.
J Vector Ecol. 2013 Jun;38(1):182-7. doi: 10.1111/j.1948-7134.2013.12025.x.
The impact of the presence of larval mosquito pathogens with potential for biological control on oviposition choice was evaluated for three mosquito species/pathogen pairs present in Florida. These included Aedes aegypti infected with Edhazardia aedis, Aedes albopictus infected with Vavraia culicis, and Culex quinquefasciatus infected with Culex nigripalpus nucleopolyhedrovirus (CuniNPV). Two-choice oviposition bioassays were performed on each host and pathogen species with one oviposition cup containing infected larvae and the other cup containing uninfected larvae (control). Both uninfected and E. aedis-infected female Ae. aegypti laid significantly fewer eggs in oviposition cups containing infected larvae. Uninfected gravid female Ae. albopictus and Cx. quinquefasciatus oviposited equally in cups containing uninfected larvae or containing larvae infected with V. culicis or CuniNPV, respectively. Gravid female Ae. albopictus infected with V. culicis did not display ovarian development and did not lay eggs. The decreased oviposition by gravid Ae. aegypti in containers containing E. aedis-infected larvae may indicate that the infected larvae produce chemicals deterring oviposition.
对于佛罗里达州存在的三对蚊虫/病原体组合，评估了具有生物防治潜力的幼虫期蚊虫病原体的存在对产卵选择的影响。这些组合包括感染了埃及伊蚊埃氏菌的埃及伊蚊、感染了库蚊瓦氏菌的白纹伊蚊，以及感染了致倦库蚊核多角体病毒（CuniNPV）的致倦库蚊。对每种宿主和病原体物种进行了双选产卵生物测定，一个产卵杯中装有感染的幼虫，另一个杯中装有未感染的幼虫（对照）。未感染和感染埃氏菌的埃及伊蚊雌蚊在装有感染幼虫的产卵杯中产卵量均显著减少。未感染的妊娠白纹伊蚊和致倦库蚊雌蚊分别在装有未感染幼虫或感染库蚊瓦氏菌或CuniNPV幼虫的杯中同等程度地产卵。感染库蚊瓦氏菌的妊娠白纹伊蚊雌蚊未表现出卵巢发育且未产卵。感染埃氏菌幼虫的容器中妊娠埃及伊蚊产卵量的减少可能表明感染的幼虫产生了抑制产卵的化学物质。
