Service M W, Joshi G P, Pradhan G D
Ann Trop Med Parasitol. 1978 Aug;72(4):377-86. doi: 10.1080/00034983.1978.11719332.
After village huts in the Kisumu area of Kenya had been sprayed with a nominal 2 g/m2 of OMS-43 (fenitrothion) as part of an insecticidal evaluation programme 964 adults of the Anopheles gambiae complex collected from huts were identified cytogenetically as either An. gambiae (species A) or An. arabiensis (species B). Similarly, cytogenetic methods were used to identify 349 adults collected from granaries and artificial pit-shelters. In addition, 2203 larvae of the gambiae complex collected from different types of habitats were specifically identified cytogenetically. As in a previous survey made prior to insecticidal spraying, adults of An. arabiensis predominated in outdoor collections while An. gambiae was highly endophilic. However, it appeared that spraying with fenitrothion had resulted in an increase in both the degree of exophily in An. arabiensis and also its relative numbers in respect to An. gambiae, although the overall pooulation of both species was greatly reduced by spraying. Insecticidal spraying may have diverted both species from feeding on man to cattle. Except for one village, where larvae of An. arabiensis were commoner than expected in cattle hoof-prints, there was little difference between the selection of different types of larval habitats by the two sibling species. Chromosomal inversions were more common in adults of An. arabiensis than in An. gambiae.
作为一项杀虫剂评估计划的一部分，在肯尼亚基苏木地区的村庄茅屋中喷洒了标称剂量为2克/平方米的OMS - 43（杀螟硫磷）后，从茅屋中采集的964只冈比亚按蚊复合体成虫通过细胞遗传学方法被鉴定为冈比亚按蚊（A种）或阿拉伯按蚊（B种）。同样，细胞遗传学方法被用于鉴定从粮仓和人工坑棚中采集的349只成虫。此外，从不同类型栖息地采集的2203只冈比亚按蚊复合体幼虫也通过细胞遗传学方法进行了专门鉴定。与之前在杀虫剂喷洒前进行的调查一样，在室外采集的成虫中，阿拉伯按蚊占主导，而冈比亚按蚊则高度嗜内。然而，似乎喷洒杀螟硫磷导致了阿拉伯按蚊的外栖程度增加，以及相对于冈比亚按蚊而言其相对数量的增加，尽管喷洒使这两个物种的总体数量都大幅减少。杀虫剂喷洒可能使这两个物种都从吸食人血转向了吸食牛血。除了一个村庄，在那里阿拉伯按蚊的幼虫在牛粪脚印中比预期更为常见外，这两个近缘物种在不同类型幼虫栖息地的选择上几乎没有差异。染色体倒位在阿拉伯按蚊成虫中比在冈比亚按蚊成虫中更为常见。
