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首页> 外文期刊>The Journal of Experimental Biology >Labrid cleaner fishes show kinematic convergence as juveniles despite variation in morphology
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Labrid cleaner fishes show kinematic convergence as juveniles despite variation in morphology

机译：尽管形态学变异，但是拉布里清洁鱼类表现出作为青少年的运动收敛性

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摘要

Cleaning, a dietary strategy in which mucus or ectoparasites are removed and consumed off other taxa, is performed facultatively or obligately in a variety of species. We explored whether species in the Labridae (wrasses, parrotfishes) of varying ecological specialization employ similar mechanisms of prey capture. In investigating feeding on attached prey among juveniles of 19 species of wrasses, we found that patterns of biting in wrasses are influenced by the interaction between the maxilla and a feature of the premaxilla which we term the maxillary crest. Premaxillary motion during biting appears to be guided by the relative size of the crest. In many cases, this results in a 'premaxillary bite' wherein the premaxillae rapidly move anteroventrally to meet the lower jaws and deliver a protruded bite. Cleaners in the Labrichthyini tribe, however, exhibited reduced or absent maxillary crests. This coincided with a distinct kinematic pattern of prey capture in these labrichthyine cleaners, coupled with some of the fastest and lowest-excursion jaw movements. Although evidence of kinematic specialization can be found in these labrichthyines (most notably in the obligate cleaners in Labroides), we found that facultative cleaners from other lineages similarly evolved reductions in excursions and timing. Convergence in feeding kinematics is thus apparent despite varying degrees of cleaning specialization and underlying morphological features.
机译：清洗，在多种物种的兼性或专性执行的膳食策略，其中粘液或体外寄生虫被去除，并且消耗掉其他类群。我们探讨不同的捕获猎物的生态专业化聘用类似的机制在隆头鱼科（隆头鱼，parrotfishes）物种是否。在调查的19种唇鱼幼鱼附后的猎物喂食，我们发现，在隆头鱼咬的模式是由上颌骨和下颌骨是我们长期的颌骨嵴的特征之间的交互影响。期间出现咬运动前颌骨由波峰的相对大小被引导。在许多情况下，这导致了“前颌骨咬合”其中premaxillae快速移动anteroventrally满足下钳口，并提供一个突出咬合。在Labrichthyini部落清洁剂，但是，显示出减少或消失上颌牙顶。这正好与在这些labrichthyine吸尘器猎物捕获的不同运动模式，再加上一些最快和最低冲程颌运动的。虽然运动专业化的证据可以在这些labrichthyines（在Labroides的专店最显着的）可以发现，我们发现从其他谱系的是兼清洁工同样演变为游览和时间的减少。收敛在喂养运动学是尽管不同程度的清洁专业化和底层形态特征的由此显而易见。

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