关键词: Iceland eelpout larvae juvenile predation spotted wolffish predation stomach contents

Mesh : Animals Nesting Behavior Predatory Behavior Perciformes Larva

来  源:   DOI:10.1111/jfb.15648

Abstract:
The stomach of a spotted wolffish (Anarhichas minor) caught in Icelandic waters was found to contain ~727 greater eelpout larvae (Lycodes esmarkii). All the larvae were of similar size and at a similar state of digestion, indicating they were all consumed together. The likely explanation for this observation is that greater eelpout lay their eggs in a nest, with the larvae remaining in the nest for a short period after hatching. The larvae were then predated upon by the spotted wolffish while still in the nest. This study sheds new light on greater eelpout in Icelandic waters, with recently hatched larvae being present in March, breeding at a depth of ~200-250 m, and likely exhibiting nesting behavior, which has not previously been documented.
摘要:
在冰岛水域中捕获的斑点狼鱼(Anarhichas未成年人)的胃被发现含有〜727个较大的eelpout幼虫(Lycodesesmarkii)。所有幼虫的大小相似,消化状态相似,表明它们都是一起消费的。这种观察的可能解释是,更大的eelpout产卵,幼虫在孵化后短时间内留在巢中。然后,幼虫仍在巢中时被斑点的狼鱼预先杀死。这项研究揭示了冰岛水域更大的eelpout,最近孵化的幼虫在三月出现,在〜200-250m的深度繁殖,并可能表现出嵌套行为,以前没有记录过。
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