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首页> 外文期刊>Zoological Science >Exaggerated Asymmetric Head Morphology of Female Doubledaya bucculenta (Coleoptera: Erotylidae: Languriinae) and Ovipositional Preference for Bamboo Internodes
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Exaggerated Asymmetric Head Morphology of Female Doubledaya bucculenta (Coleoptera: Erotylidae: Languriinae) and Ovipositional Preference for Bamboo Internodes

机译：雌双代b（鞘翅目：鞘翅目科：Languriinae）的夸张不对称头部形态和竹节间的产卵偏好。

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摘要

The lizard beetle Doubledaya bucculenta (Coleoptera: Erotylidae: Languriinae) female has evident asymmetric head morphology. The females excavate small holes in host bamboo internodes for the deposition of eggs. To understand the asymmetry and allometry of male and female adults and larvae of D. bucculenta, mandibular length, genal and head width, and elytral length were measured, and the oviposition preference for different-sized internodes of the bamboo Pleioblastus simonii and the relationship between internode size and emerging adult size were examined. Larval mandibles exhibited no clear asymmetry pattern, and genae showed fluctuating asymmetry in length. Adult male mandibles showed left-directional asymmetry, but genae showed fluctuating asymmetry. Adult female mandibles and genae exhibited marked left-directional asymmetry. The degree of asymmetry of mandibles and genae remained constant regardless of body size. Large females tended to choose large-diameter internodes of P. simonii and to lay eggs successfully, whereas small females tended to choose intermediate-diameter internodes, but to fail in oviposition, suggesting that small females pay a high cost on oviposition. There was a positive correlation between internode size and emerging adult size. Marked directional asymmetry of female mandibles and genae are discussed in relation to greater frequency of cutting bamboo fibers compared with adult males, and the traits of bamboo internode.
机译：蜥蜴甲虫Doubledaya bucculenta（Coleoptera：Erotylidae：Languriinae）雌性的头部形态明显不对称。雌性在宿主竹节间开一个小孔以沉积卵。为了了解鳞球藻的成年雄虫和雌虫的幼虫的不对称性和异速性，测量了下颌长度，属和头部的宽度，以及腹部的长度，并对不同尺寸的竹假竹苦竹节间的产卵偏爱及其之间的关系进行了研究。检查了节间大小和新兴成人大小。幼虫的下颌骨没有明显的不对称模式，而属则在长度上有波动。成年雄性下颌骨表现出左向不对称性，但成年后表现出波动性不对称性。成年女性下颌骨和成年动物表现出明显的左向不对称性。下颌骨和属的不对称程度保持恒定，与体型无关。大型雌性倾向于选择大直径小对虾假单胞菌并成功产卵，而小型雌性倾向于选择中等直径的节间但产卵失败，这表明小型雌性在产卵上付出了高昂的代价。节点间大小与新生成人大小之间呈正相关。讨论了女性下颌骨和属的明显的方向不对称性，与成年男性相比切割竹纤维的频率更高，以及竹节间的特征有关。

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