A biodiversity survey of scavenging amphipods in a proposed marine protected area: the Filchner area in the Weddell Sea, Antarctica

A biodiversity survey of scavenging amphipods in a proposed marine protected area: the Filchner area in the Weddell Sea, Antarctica
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对拟议的海洋保护区(南极洲威德尔海的菲尔奇纳地区)中的食腐片脚类动物进行生物多样性调查

DOI:
10.1007/s00300-018-2292-7
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发表时间:
2018
期刊:
影响因子:
1.7
通讯作者:
Held C
Held C
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
Seefeldt MA;Havermans C;Held C

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片足类动物的清除动物群(Lysianassoidea),结合DNA条形码的形态学鉴定的综合清单,在这里提供了位于东南部威德尔海的Filchner地区。超过4400个Lysianassoids的物种丰富度和相对丰度进行了调查,覆盖20个不同的站点,使用不同的采样设备,包括最南端的诱饵陷阱部署到目前为止(76°S)。高物种丰富度观察:29形态种,其中5个是新的科学。利用本研究中获得的109个细胞色素c氧化酶I基因(COI)序列以及南极其他地区的样品序列进行了分子物种划分。这些基于距离的分析(树和自动条形码间隙发现方法)表明存在42个谱系;对于4个物种,发现了几个(隐藏)谱系。L.片足类清道夫公会在威德尔海的冰约束的生态系统的多样性进行了讨论,在自下而上的选择力。在威德尔海的最南端,是银鱼和冰鱼的产卵和育苗场,丰富的鱼类和哺乳动物食物福尔斯可能是食腐动物的主要食物。最后,生物多样性调查的重要性,在这一地区建立海洋保护区(威德尔海MPA)的背景下,强调和未来的研究如何有助于更好地了解在这个系统中的生态作用的清道夫进行了讨论。
An integrative inventory of the amphipod scavenging fauna (Lysianassoidea), combining morphological identifications with DNA barcoding, is provided here for the Filchner area situated in the south-eastern Weddell Sea. Over 4400 lysianassoids were investigated for species richness and relative abundances, covering 20 different stations and using different sampling devices, including the southernmost baited traps deployed so far (76°S). High species richness was observed: 29 morphospecies of which 5 were new to science. Molecular species delimitation methods were carried out with 109 cytochrome c oxidase I gene (COI) sequences obtained during this study as well as sequences from specimens sampled in other Antarctic regions. These distance-based analyses (trees and the Automatic Barcode Gap Discovery method) indicated the presence of 42 lineages; for 4 species, several (cryptic) lineages were found. More than 96% of the lysianassoids collected with baited traps belonged to the speciesOrchomenella pinguidess. l. The diversity of the amphipod scavenger guild in this ice-bound ecosystem of the Weddell Sea is discussed in the light of bottom–up selective forces. In this southernmost part of the Weddell Sea, harbouring spawning and nursery grounds for silverfish and icefishes, abundant fish and mammalian food falls are likely to represent the major food for scavengers. Finally, the importance of biodiversity surveys in the context of the establishment of a marine protected area in this region (Weddell Sea MPA) is highlighted and how future studies can contribute to a better understanding the ecological role of scavengers in this system is discussed.
DOI: 10.1186/s12983-017-0248-3
发表时间: 2017
影响因子: 2.8
作者:
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通讯作者: Held C
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