Size–specific defensive structures in a horned weevil confirm a classic battle plan: avoid fights with larger opponents
Size–specific defensive structures in a horned weevil confirm a classic battle plan: avoid fights with larger opponents
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角象鼻虫的体型特定的防御结构证实了一个经典的战斗计划：避免与体型更大的对手战斗
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
J. Lobo
中科院分区：
文献类型：
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作者：
W. Eberhard;W. Eberhard;M. GARCIA;J. Lobo
雄性Parisoschoenus arteriitus的前胸有一个坚硬的鞘，在争夺雌性的战斗中，它可以容纳对手的角。雄性不能使用自己的角，除非他收到他的对手的角在他的鞘。雄性的鞘的长度总是近似等于他自己的角的长度，所以他的身体设计只适合与角等于或短于他自己的角的雄性进行角锁定战斗。角的长度和鞘的长度是相对于彼此和身体大小的指标二形。变形之间的切换点对于几种关系来说非常接近，所以战斗形态的不同方面是紧密协调的。
A rigid sheath that extends deep into the prothorax of male Parisoschoenus expositus serves to receive the horns of opponents in battles over females. The male cannot use his own horn unless he receives his opponent's horn in his sheath. The length of a male's sheath is always approximately equal to the length of his own horns, so his body design is appropriate only for horn–locking battles with males whose horns are equal to or shorter than his own. Horn length and sheath length are dimorphic with respect to each other and to an indicator of body size. The switch points between morphs are very nearly the same for several relationships, so the different aspects of fighting morphology are tightly coordinated.