Prey consumption and functional response of three acarophagous species to eggs of the two-spotted spider mite in the laboratory
Prey consumption and functional response of three acarophagous species to eggs of the two-spotted spider mite in the laboratory
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DOI：
10.1303/aez.2004.97
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发表时间：
2004-02-01
影响因子：
1.3
通讯作者：
Yamaguchi, K
中科院分区：
文献类型：
--
作者：
Gotoh, T;Nozawa, M;Yamaguchi, K
捕食者之间的猎物消费，繁殖率和搜索能力，这在很大程度上仍然是未开发的相关特性的比较调查，可以产生重要的信息，选择新的控制剂。本文测定了二斑叶螨（Tetranychus urticae）红型卵上的三种捕食性天敌（瓢虫Stethorus liga、捕食性蓟马Scolothrips takahashii和捕食性螨Amblyseius californicus）羽化后20 d内未成熟期和成雌虫的日捕食率，以及成雌虫对二斑叶螨卵的功能反应。在18- 20 ℃、25 ℃和30 ℃三个恒温条件下，用16 L：8 D的温度梯度，在利马豆叶盘上，对荨麻疹卵进行了分离和鉴定。S.雌螨取食相同数量的卵，而雌螨取食的卵更多。takahashii和A.在每种测试温度下，雄性未成熟体对加利福尼亚州的影响都比对雄性未成熟体的影响大。在未成熟阶段消耗的鸡蛋总数没有显着差异的温度之间的任何三个捕食者。消费T。荨麻疹虫卵。最快的是S。高桥。在25 ℃下羽化后的前20天内，雌成虫平均日消耗量为13.4粒。californicus，23.0粒卵。takahashii和294.4卵。- 是的成年女性的三个捕食者物种表现出II型功能响应猎物密度，无论测试的温度。
Comparative investigation of the characteristics related to prey consumption, reproductive rate and searching capacity among predators, which remain largely unexplored, could yield important information for selection of novel control agents. In this paper, the daily prey consumption rate of the immature stages and adult females until 20 days after eclosion of three predators, Stethorus japonicus (lady bug), Scolothrips takahashii (predatory thrips) and Amblyseius californicus (predatory mite), on eggs of Tetranychus urticae (red form) was determined, as well as the functional response of adult females to T. urticae eggs, on lima bean leaf discs in the laboratory at three constant temperatures (18-20,25 and 30 degreesC) and 16L: 8D. Female and male immatures of S. japonicus consumed the same number of spider-mite eggs, whereas more eggs were eaten by female immatures of S. takahashii and A. californicus than by male immatures at each of the temperatures tested. The total number of eggs consumed during the immature stages did not differ significantly among temperatures for any of the three predators. Consumption of T. urticae eggs by S. japonicus was fastest, followed by S. takahashii. Average daily consumption rates of adult females during the first 20 days after emergence at 25 degreesC were 13.4 eggs for A. californicus, 23.0 eggs for S. takahashii and 294.4 eggs for S. japonicus. Adult females of the three predator species showed a type II functional response to prey density, regardless of the temperatures tested.