Geograpnic variation of host use in the leaf beetle Agelasa nigriceps suggests host range expansion
Geograpnic variation of host use in the leaf beetle Agelasa nigriceps suggests host range expansion
复制标题
叶甲虫 Agelasa nigriceps 寄主利用的地理变化表明寄主范围扩大
DOI：
10.1111/j.1570-7458.2011.01211.x
复制
发表时间：
2012
影响因子：
1.9
通讯作者：
H Katakura
中科院分区：
文献类型：
--
作者：
TI Kohyama;K Matsumoto;H Katakura
寄主范围的扩大是植食性昆虫寄主利用进化过程中的一个重要事件。本文报道了金体叶甲虫Agelasa nigricepsMotschulsky（鞘翅目：金体叶甲虫科）寄主利用的地理差异，并认为这种甲虫正在扩大其寄主范围。这种甲虫最近被记录在翼苯乙烯上。调查。（Styracaceae）除了它的共同寄主植物(Sieb.；调查)。木板。进行筛选。(猕猴桃科)。西娅。在日本广泛发现了古鱼相关种群。与hispidus相关的种群仅在日本中部和西南部发现。本研究从8个地点和4个只发生天牛的地点采集了12个黑斑天牛种群的成虫摄食行为和幼虫表现。阿古塔（异域地区）和四个地区，其中a。arguta andP。Hispidus相关种群是同地发生的（同地分布）。无论寄主植物和寄主地点如何，所有种群的甲虫均表现出较高的接受度和幼虫性能。argutaleaves。相比之下，我们发现甲虫的反应toP有相当大的变化。hispidusleaves。西娅。异域地区的古鳗相关种群几乎不被接受。而同域分布的植物，特别是凤梨属植物。hispidus -相关种群，接受并生长在p上。虽然不同地区的接受程度和幼虫表现不同。这些结果有力地表明。论证了祖先寄主forA。黑穗病和宿主范围扩展到p。这种甲虫身上已经发生了鳞瘤。
Host range expansion is an important event in the evolution of host use in phytophagous insects. Herein, we report geographic variation of host use in the chrysomelid leaf beetle,Agelasa nigricepsMotschulsky (Coleoptera: Chrysomelidae), and suggest that this beetle is expanding its host range. This beetle has been recently recorded onPterostyrax hispidusSieb. et Zucc. (Styracaceae) in addition to its common host plantActinidia arguta(Sieb. et Zucc.) Planch. ex Miq. (Actinidiaceae). TheA. arguta‐associated populations were widely found in Japan, whereas theP. hispidus‐associated populations were found only in central and southwestern Japan. In the present study, we examined adult feeding behavior and larval performance of 12A. nigricepspopulations collected from eight localities, four localities where beetles occurred only onA. arguta(allopatric localities) and four localities whereA. arguta‐ andP. hispidus‐associated populations occurred sympatrically (sympatric localities). Beetles of all populations, irrespective of their host plants and localities, showed high acceptance of and high larval performance onA. argutaleaves. In contrast, we found considerable variation in the beetle response toP. hispidusleaves. TheA. arguta‐associated populations of allopatric localities scarcely acceptedP. hispidusleaves, whereas those of sympatric localities, particularly those ofP. hispidus‐associated populations, accepted and grew onP. hispidusleaves, although the degree of acceptance and larval performance varied among localities. These results strongly suggest thatA. argutais the ancestral host forA. nigriceps, and host range expansion to theP. hispidushas occurred in this beetle.