Seasonal prevalence and migration of aquatic insects in paddies and an irrigation pond in Shimane prefecture [Japan]
Seasonal prevalence and migration of aquatic insects in paddies and an irrigation pond in Shimane prefecture [Japan]
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岛根县稻田和灌溉池塘水生昆虫的季节性流行和迁徙[日本]
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
H. Saijo
中科院分区：
文献类型：
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作者：
H. Saijo
摘要：对日本岛根县稻田及邻近灌水池水生鞘翅目和半翅目昆虫的区系组成和数量季节变化进行了调查。从稻田和池塘采集到半翅目9种，鞘翅目24种。稻田中的成虫种类从5-6月逐渐增加，到秋季逐渐减少。相比之下，池塘里的数量在秋季最高。稻田幼虫种类数以5~7月份最高，池塘全年较低。观察到的16种水生昆虫根据其栖息地利用方式被分为4类：A)以池塘为非繁殖和繁殖目的，B)以池塘为主要栖息地和稻田为繁殖目的，C)既是池塘和稻田又是繁殖栖息地的水生昆虫，以及D)以稻田为非繁殖和繁殖目的的水生昆虫。我的观察表明，稻田在水生鞘翅目和半翅目的繁殖中起着重要的作用，而池塘为非繁殖阶段提供了稳定的栖息地，也为一些物种的繁殖提供了场所。这意味着稻田和池塘的共存对该地区水生昆虫的物种丰富度具有重要意义。
Abstract: Faunal composition and seasonal changes in the number of aquatic Coleoptera and Hemiptera were investigated in paddies and an adjacent irrigation pond in Shimane Prefecture, Japan. Nine species of Hemiptera and Twenty-four species of Coleoptera were collected from both the paddies and the pond. The number of species of adult insects in the paddies increased from May to June, then gradually decreased toward autumn. In contrast, the number in the pond was highest during autumn. The number of species of larval insects was high in paddies especially from May to July, but low in the pond throughout the year. Sixteen of the aquatic insect species observed were classified into four types on the basis of their habitat utilization pattern: A) those using the pond for both non-reproductive and reproductive purposes, B) those using the pond as the main habitat and the paddies for reproduction, C) those using both the pond and paddies as a living habitat and also the paddies for reproduction, and D) those using the paddies for both non-reproductive and reproductive purposes. My observations indicate that paddies play an important role in the reproduction of aquatic Coleoptera and Hemiptera, whereas the pond provides stable habitat for nonreproductive stages, as well as a place for reproduction of some species. This means that the coexistence of paddies and ponds is important for the species richness of aquatic insects in this region.