Simple decision rules underlie collaborative hunting in yellow saddle goatfish
Simple decision rules underlie collaborative hunting in yellow saddle goatfish
复制标题
简单的决策规则是黄鞍鮰鱼协作狩猎的基础
DOI：
10.1098/rspb.2017.2488
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
R. Bshary
中科院分区：
文献类型：
--
作者：
Marc Steinegger;Dominique G. Roche;R. Bshary
据报道，在几种脊椎动物物种中，合作狩猎是在空间和时间上协调动物行为以捕获猎物。然而，以前的研究是观察性的，阻碍了我们识别导致合作的个人决策规则的能力。我们的实验研究合作狩猎黄色鞍山羊鱼（Parupeneus cyclostomus）暴露对一个模拟的猎物，逃到一个人工庇护所，多个入口。第一条发起追逐的鱼（“发起者”）总是最接近猎物，并直接沿着猎物的路径追逐猎物。相反，第二条山羊鱼（“追随者”）的行为取决于它相对于发起者的空间位置。当跟随者距离发起者不到一个身长时，它也会在95%以上的情况下直接加速冲向猎物。然而，如果两条山羊鱼相隔一个体长或更多的距离，追随者在87%的情况下会选择一条不那么直接的路线到达猎物。在这种情况下，追随者往往会先到达猎物较远的避难所，这可能会增加它的狩猎成功率，或者在自然条件下阻断猎物的逃跑路线。我们的研究结果表明，协调的狩猎行为可以从简单的，自私的决定。
Collaborative hunting, the coordination of animal behaviour in space and time to capture prey, is reported in several vertebrate species. However, previous studies are observational, hampering our ability to identify individual decision rules that result in collaboration. We experimentally investigated collaborative hunting in yellow saddle goatfish (Parupeneus cyclostomus) by exposing pairs to a mock prey that fled to an artificial shelter with multiple entrances. The first fish to initiate the chase (the ‘initiator’) was always closest to the prey and pursued it directly in its path. Conversely, the behaviour of the second goatfish (the ‘follower’) depended on its spatial position relative to the initiator. When the follower was less than one body length behind the initiator, it also accelerated directly towards the prey in over 95% of cases. However, if the two goatfish were separated by a distance of one body length or more, the follower chose a less direct route to reach the prey in 87% of cases. In this scenario, the follower often reached the prey's more distant refuge first, which might increase its hunting success or block the prey's escape path under natural conditions. Our findings suggest that coordinated hunting behaviour can result from simple, self-serving decisions.
影响因子：
6.6
作者：
Stoffel, Martin A.;Nakagawa, Shinichi;Schielzeth, Holger
通讯作者：
Schielzeth, Holger