Adler Gregory H, Davis Shannon L, Carvajal Alejandra
Department of Biology and Microbiology, University of Wisconsin-Oshkosh, Oshkosh, Wisconsin 54901, USA.
J Parasitol. 2003 Aug;89(4):693-7. doi: 10.1645/GE-3124.
Botfly larvae (Cuterebra sp.) infesting spiny rats (Proechimys semispinosus) in 8 small islands in the Panama Canal were studied. Rats were live trapped monthly on each island from January 1991 through February 2000 and visually examined for the presence of bots. Overall, bot prevalence was 4.6% and differed statistically among island rat populations. Rats were simultaneously infested by as many as 4 bots. Overall bot intensity was 1.3 bots per infested rat and did not differ among islands. Mean bot density across all islands was 0.0111 and was greater during the dry seasons than during the rainy seasons, but it did not differ among islands. Bots were found during all the 12 calendar months, suggesting a multivoltine reproductive schedule. Although bot activity varied seasonally, there was little synchrony of bot activity among islands. Bot density was related negatively to rainfall but was not related to host density, suggesting that drier ambient conditions may promote reproduction by adult bot flies in this system.
对巴拿马运河8个小岛上感染多毛鼠（Proechimys semispinosus）的肤蝇幼虫（Cuterebra sp.）进行了研究。从1991年1月至2000年2月，每月在每个岛屿上活捉老鼠，并对其进行肉眼检查，看是否有肤蝇幼虫。总体而言，肤蝇幼虫感染率为4.6%，不同岛屿的鼠群之间存在统计学差异。老鼠同时感染多达4只肤蝇幼虫。总体肤蝇幼虫感染强度为每只感染老鼠1.3只肤蝇幼虫，各岛屿之间无差异。所有岛屿的平均肤蝇幼虫密度为0.0111，旱季高于雨季，但各岛屿之间无差异。在全年12个月中均发现有肤蝇幼虫，表明其繁殖周期为多化性。尽管肤蝇幼虫活动有季节性变化，但各岛屿之间肤蝇幼虫活动几乎没有同步性。肤蝇幼虫密度与降雨量呈负相关，但与宿主密度无关，这表明较干燥的环境条件可能促进该系统中成年肤蝇的繁殖。
