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首页> 外文期刊>The Journal of Experimental Biology >Aquatic feeding in pipid frogs: the use of suction for prey capture
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Aquatic feeding in pipid frogs: the use of suction for prey capture

机译：皮蛙的水生饲养：利用吸力捕获猎物

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摘要

Inertial suction feeding is the most common method of prey capture among aquatic vertebrates. However, it had been unclear whether the aquatic frogs in the family Pipidae also used inertial suction for prey capture. In this study, we examined feeding behavior in four species of pipids, Pipa pipa, Xenopus laevis, Hymenochirus boettgeri and Pseudhymenochirus merlini. Pressure in the buccopharyngeal cavity was measured during prey capture. These pressure measurements were coupled with high-speed recordings of feeding behavior. For each species, the internal buccopharyngeal pressure was found to drop significantly below ambient pressure, and changes in pressure corresponded with the onset of mouth opening. Kinematic analysis revealed that all species of pipids generated subambient pressure during prey capture; H. boettgeri and P. merlini relied solely on inertial suction feeding. Pipa pipa and X. laevis additionally employed forelimb scooping during prey capture but both of these species demonstrated the ability to capture prey with inertial suction alone. Based on buccopharyngeal pressure measurements as well as kinematic analyses, we conclude that inertial suction feeding is used during prey capture in these four species of pipids.
机译：惯性吸食是水生脊椎动物中捕食猎物的最常见方法。但是，尚不清楚Pipidae家族中的水生青蛙是否也使用惯性抽吸来捕获猎物。在这项研究中，我们检查了四种小琵琶（琵琶琵琶，非洲爪蟾，Hymenochirus boettgeri和Pseudhymenochirus merlini）的摄食行为。在捕获猎物期间测量颊咽腔中的压力。这些压力测量与喂食行为的高速记录相结合。对于每个物种，发现内部颊咽压力明显低于环境压力，并且压力的变化与张口的开始相对应。运动学分析表明，所有种类的小精灵在捕获猎物时都会产生环境压力。 H. boettgeri和P. merlini仅依靠惯性吸食。琵琶琵琶和X. laevis在猎物捕获过程中还采用了前肢sc取，但是这两个物种都证明了仅靠惯性吸力就可以捕获猎物。基于颊咽压力测量和运动学分析，我们得出结论，在这四种小蜘蛛捕获猎物的过程中使用了惯性吸食。

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