Mulieri Pablo R, Torretta Juan P, Schweigmann Nicolás
Departamento de Ecologia, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, C1428 EHA Buenos Aires, Argentina.
J Vector Ecol. 2005 Dec;30(2):201-5.
Larvae and pupae of the genus Mansonia Blanchard attach to the roots of aquatic plants by means of modified structures to obtain oxygen. A study of the association of larval Ma. indubitans and Ma. titillans with floating macrophytes was conducted at Macies Pond, Argentina. Fifty-four sampling units were taken from January to May 2003. Three genera of host plants were considered: Pistia, Limnobium, and Salvinia. A total of 402 immatures of Ma. indubitans and 217 of Ma. titillans were captured and associations between Mansonia immatures and roots of each genera were assesed. Significant association was noted between Ma. indubitans and certain host plant species (K-W H=42.74, df=2, p<0.001). The same result was observed for Ma. titillans (K-W H=23.42, df=2, p<0.001). Both Mansonia species utilized roots of P. stratiotes in significantly higher proportions than expected by random selection. Both species showed significant negative association with Salvinia spp., while no clear relationships were detected with L. laevigatum.
曼森蚊属（Blanchard）的幼虫和蛹通过特殊结构附着在水生植物的根部以获取氧气。在阿根廷的马西斯池塘对幼虫期的可疑曼森蚊和骚扰曼森蚊与漂浮大型水生植物的关联进行了一项研究。2003年1月至5月共采集了54个采样单位。考虑了三个宿主植物属：大薸属、水蕴草属和槐叶萍属。共捕获了402只可疑曼森蚊幼虫和217只骚扰曼森蚊幼虫，并评估了曼森蚊幼虫与各属植物根部之间的关联。发现可疑曼森蚊与某些宿主植物物种之间存在显著关联（K-W H=42.74，自由度=2，p<0.001）。骚扰曼森蚊也得到了相同的结果（K-W H=23.42，自由度=2，p<0.001）。两种曼森蚊利用大薸根部的比例均显著高于随机选择预期的比例。两种曼森蚊均与槐叶萍属植物呈现显著负相关，而与光叶水蕴草未发现明显关系。
