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首页> 外文期刊>Journal of Medical Entomology >Spiracular indices in Anopheles stephensi: A taxonomic tool to identify ecological variants
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Spiracular indices in Anopheles stephensi: A taxonomic tool to identify ecological variants

机译：斯蒂芬按蚊的螺旋指数：识别生态变异的分类工具

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摘要

Thoracic spiracle length and its index was examined for their ability to discriminate two ecological variants, type form and mysorensis, of Anopheles stephensi in the adult stage. The type form is exclusively domestic in all seasons, whereas the mysorensis variant occupies the outdoor niche during monsoon and postmonsoon seasons, with spillover into domestic sites during summer ecological stress periods. A statistically significant co-relation was established between the ridge count of the egg and two adult measurements, the thoracic spiracle length, and the spiracular index. In An. stephensi type form, average spiracle length was 0.11-0.12 mm and average spiracular index was 8.09-9.23, whereas in mysorensis, the corresponding figures were 0.09-0.10 mm and 6.82-7.60. These parameters showed consistent variations in population of mosquitoes that emerged during monsoon and summer season. The thoracic lengths in both variants remained constant, and only spiracular lengths showed fluctuations in three seasonal populations. These measures provide discrimination of adult variants-identifications that are essential in malaria control programs.
机译：在成年阶段，检查了胸螺的长度及其指数，以辨别斯蒂芬按蚊的两种生态变体，即类型形式和迈索氏菌。这种类型的形式在所有季节都是唯一的家庭形式，而迈索尔变种在季风和季风后的季节占据着户外生态位，在夏季的生态压力时期会溢出到家庭场所。在卵的脊数和两个成年测量值，胸椎长度和椎体指数之间建立了统计学上显着的相关性。在一个斯蒂芬斯型，平均气孔长度为0.11-0.12 mm，平均气孔指数为8.09-9.23，而在迈索尔，相应的数字为0.09-0.10 mm和6.82-7.60。这些参数显示在季风和夏季出现的蚊虫种群数量具有一致的变化。两种变体的胸长均保持恒定，只有鼻长在三个季节种群中显示出波动。这些措施提供了对成人变体的歧视，这是疟疾控制计划中必不可少的。

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