Distribution and host specificity of the thistle-feeding tortoise beetle Cassida vibex (Coleoptera: Chrysomelidae) in southwestern Hokkaido, northern Japan.
Distribution and host specificity of the thistle-feeding tortoise beetle Cassida vibex (Coleoptera: Chrysomelidae) in southwestern Hokkaido, northern Japan.
复制标题
日本北部北海道西南部的食蓟龟甲虫 Cassida vibex（鞘翅目：叶甲科）的分布和寄主特异性。
DOI：
10.1111/j.1479-8298.2011.00456.x
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发表时间：
2011
影响因子：
0.9
通讯作者：
H. Katakura
中科院分区：
文献类型：
--
作者：
N. Fujiyama;K. Togashi;S. Kikuta;H. Katakura
食蓟龟甲虫Cassida vibex（鞘翅目：龟甲虫科）广泛分布于古北界。在日本，本种仅在最大的岛屿本州岛有记录。在这里，我们报告了该种的发生在北海道，最北方的日本主岛，沿着与详细的分布记录，从岛的西南部（南部大岛半岛）和信息的寄主植物。我们还介绍了成虫摄食偏好和幼虫发育性能的实验室实验结果，以确定C。vibex对4种蓟（Cirsium grayanum，Cir.阿尔皮科拉山耶祖恩山和西aomorense;在大岛半岛调查的97个地点中，仅在4个地点发现了卷叶加希达（Cassida vibex），与此形成强烈对比的是，同属蓟食草植物C. rubiginosa（74个地点）在北海道西南部常见。在野生环境中，这两种蓟都是喜食的，但在实验室中，成年甲虫对这种蓟或其他三种蓟没有偏好。C.幼虫生长性能Vibex与Cir相似。阿尔皮科拉山耶祖恩山和西aomoreness，但显著低于Cir。grayanum。SinceCir. alpicolaoften形成大丛的个别植物，whereasCir.耶祖恩山和西aomorenseare在其栖息地中分散分布，C. vibex仅在Cir密集的部位收集。alpicola，我们推测C.只有在有大量合适的宿主植物的情况下才可能进行振动。
The thistle‐feeding tortoise beetleCassida vibex(Coleoptera: Chrysomelidae) is widespread in the Palearctic region. In Japan, this species has been recorded only from the largest island, Honshu. Here we report the occurrence of this species on Hokkaido, the most northern main island of Japan, along with detailed distributional records from the southwestern part of the island (southern Oshima Peninsula) and information on host plants. We also present the results of laboratory experiments on adult feeding preference and larval developmental performance to determine the specificity ofC. vibexfor four thistle species (Cirsium grayanum,Cir. alpicola,Cir. yezoenseandCir. aomorense; Asteraceae) common in southwestern Hokkaido.Cassida vibexwas detected at only four sites among 97 sites investigated on the Oshima Peninsula, in strong contrast to the common occurrence of the congeneric thistle feederC.rubiginosa(74 of 97 sites).Cassida vibexwas found mainly onCir. alpicolain the wild, but adult beetles showed no feeding preference for this or three other thistle species when given a choice in the laboratory. Larval performance ofC. vibexwas similar onCir. alpicola,Cir. yezoenseandCir. aomorensebut significantly lower onCir. grayanum. SinceCir. alpicolaoften forms large clumps of individual plants, whereasCir. yezoenseandCir. aomorenseare scattered in their habitats, andC. vibexwas collected only at sites where there were dense patches ofCir. alpicola, we postulate that the persistence ofC. vibexis possible only where a substantial amount of suitable host plants is available.