新西兰奥特亚查塔姆海隆深海乌贼的营养生态学

IF 1.4 4区 环境科学与生态学 Q3 FISHERIES
L. E. McBride, H. Braid, D. Stevens, K. Bolstad
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引用次数: 1

摘要

头足类动物是包括南太平洋在内的世界范围内海洋营养系统的重要组成部分。Moroteuthopsis ingens(Onychotuthidae)是新西兰奥特亚地区最丰富的深海鱿鱼之一,经常被抹香鲸和橙腹鹬等捕食者捕食。然而,尽管有许多关于M.ingens饮食的出版物,但对其喂养生态学的了解仍然有限。在这项研究中,我们使用DNA条形码和耳石鉴定分析了查塔姆隆起(新西兰南岛特威普纳穆以东的一个生态和经济重要地区)的M.ingens猎物。灯笼鱼(Myctophidae)是最常见的猎物,但也发现了其他硬骨鱼物种、头足类和甲壳类动物的碎片,这表明它们有机会主义和可能的食人行为。首次报道了五种鱼类(包括一种可能未描述的Gymnoscopellus)和Bathyteuthis abyssicola作为M.ingens的猎物。Moroteuthopsis ingens似乎是几个动态食物链的组成部分,并可能在南半球海洋环境中的碳转移中发挥重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Trophic ecology of the deep-sea squid Moroteuthopsis ingens (Cephalopoda: Onychoteuthidae) from the Chatham Rise, Aotearoa New Zealand
ABSTRACT Cephalopods form important components of marine trophic systems worldwide, including those in the South Pacific. Moroteuthopsis ingens (Onychoteuthidae) is one of the most abundant deep–sea squids in the Aotearoa New Zealand region and is preyed upon by predators such as the sperm whale and orange roughy. However, despite the many publications on M. ingens’ diet, knowledge on its feeding ecology remains limited. In this study, we analysed the prey of M. ingens from the Chatham Rise (an ecologically and economically important region east of Te Waipounamu/New Zealand’s South Island) using DNA barcoding and otolith identification. Lanternfishes (Myctophidae) were the most frequently encountered prey item, but other teleost species, cephalopods and crustacean fragments were also found, indicating opportunistic and likely cannibalistic feeding behaviour. Five fish species (including a possibly undescribed species of Gymnoscopelus) and Bathyteuthis abyssicola are reported as prey items of M. ingens for the first time. Moroteuthopsis ingens appears to be a component of several dynamic food chains and likely plays an important role in the transfer of carbon throughout marine environments in the Southern Hemisphere.
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来源期刊
CiteScore
4.50
自引率
12.50%
发文量
35
审稿时长
3 months
期刊介绍: Aims: The diversity of aquatic environments in the southern continents and oceans is of worldwide interest to researchers and resource managers in research institutions, museums, and other centres. The New Zealand Journal of Marine and Freshwater Research plays an important role in disseminating information on observational, experimental, theoretical and numerical research on the marine, estuarine and freshwater environments of the region.
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