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首页> 外文期刊>Marine ecology progress series >Diet of the squid Moroteuthis ingens (Teuthoidea: Onychoteuthidae) in the upper slope waters of the Kerguelen Islands
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Diet of the squid Moroteuthis ingens (Teuthoidea: Onychoteuthidae) in the upper slope waters of the Kerguelen Islands

机译：克格伦群岛上坡水域的鱿鱼Moroteuthis ingens（Teuthoidea：Onychoteuthidae）的饮食

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摘要

The diet of the onychoteuthid squid Moroteuthis ingens was investigated through stomach content analyses of 72 individuals collected aboard a trawler targeting Patagonian toothfish Dissostichus eleginoides in the upper slope waters of the Kerguelen Archipelago. M. ingens is primarily piscivorous (67% by number and 87% by reconstituted mass), although the diet also includes squids (12 and 12%, respectively) and crustaceans (21 and <1%, respectively). The main fish prey were the paralepidid Arctozenus risso (28% by reconstituted mass), the gempylid Paradiplospinus gracilis (24%) and various myctophids. M. ingens preyed also upon conspecifics (cannibalism, 6%), and the euphausiid Euphausia triacantha was the main crustacean item. Most of the prey are pelagic organisms performing diurnal migration, suggesting that the benthopelagic M. ingens catch them when they are near the bottom during the day. In turn, M. ingens is a prey for several species of top predators, including D. eleginoides and air-breathing vertebrates. M. ingens thus contributes to carbon export from the pelagic environment to the benthos and from the ocean to the atmosphere as carbon dioxide expired by birds and mammals.
机译：通过对Kerguelen群岛上坡水域中针对巴塔哥尼亚牙鱼Dissostichus eleginoides的拖网渔船上收集的72个人的胃内容物分析，研究了甲cho鱼鱿鱼Moroteuthis ingens的饮食。尽管饮食中还包括鱿鱼（分别为12％和12％）和甲壳类（分别为21％和<1％），但M. ingens主要是食肉的（数量上占67％，重构质量下占87％）。鱼的主要猎物是副鞭毛的Arctozenus risso（占重组蛋白的28％），吉非里德的Paradiplospinus gracilis（占24％）和各种菌丝体。 M. ingens也捕食特定物种（同类相食（6％）），而euphausiid Euphausia triacantha是主要的甲壳类动物。大部分猎物是进行昼夜迁移的中上层生物，这表明当它们接近白天时，底生上的M. ingens会捕获它们。反过来，M。ingens则是几种顶级捕食者的猎物，包括D. eleginoides和空气呼吸脊椎动物。因此，由于鸟类和哺乳动物所排放的二氧化碳，M。ingens促进了从远洋环境向底栖生物，从海洋向大气的碳出口。

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