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血食源宿主聚集度和景观结构影响利用干冰诱捕器估计雌性蚊子(双翅目:蚊科)的数量。

Bloodmeal host congregation and landscape structure impact the estimation of female mosquito (Diptera: Culicidae) abundance using dry ice-baited traps.

机构信息

Center for Vectorborne Diseases, School of Veterinary Medicine, University of California, Davis, CA 95616, USA.

出版信息

J Med Entomol. 2011 May;48(3):513-7. doi: 10.1603/me10273.

Abstract

Vegetation patterns and the presence of large numbers of nesting herons and egrets significantly altered the number of host-seeking Culex tarsalis Coquillett (Diptera: Culicidae) collected at dry ice-baited traps. The numbers of females collected per trap night at traps along the ecotone of Eucalyptus stands with and without a heron colony were always greater or equal to numbers collected at traps within or under canopy. No Cx. tarsalis were collected within or under Eucaplytus canopy during the peak heron nesting season, even though these birds frequently were infected with West Nile virus and large number of engorged females could be collected at resting boxes. These data indicate a diversion of host-seeking females from traps to nesting birds reducing sampling efficiency.

摘要

植被模式和大量繁殖的鹭类和白鹭的存在显著改变了在干冰诱饵陷阱中收集的宿主寻求库蚊(双翅目:库蚊科)的数量。在有和没有鹭群的桉树生态交错带的陷阱中,每个陷阱夜收集的雌性数量总是大于或等于在树冠内或树冠下的陷阱中收集的数量。在鹭类筑巢高峰期,即使这些鸟类经常感染西尼罗河病毒,并且可以在休息箱中收集到大量饱食的雌性,也没有在桉树树冠内或树冠下收集到库蚊。这些数据表明,宿主寻求的雌性从陷阱中转移到筑巢的鸟类身上,降低了采样效率。

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