First record of the genus Oediceroides (Amphipoda: Amphilochidea: Oedicerotidae) for the Gulf of Mexico, with the description of a new species
First record of the genus Oediceroides (Amphipoda: Amphilochidea: Oedicerotidae) for the Gulf of Mexico, with the description of a new species
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墨西哥湾 Oediceroides 属（片足纲：Amphilochidea：Oedicerotidae）的首次记录，并描述了一个新种
DOI：
10.33800/nc.vi18.261
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发表时间：
2021
影响因子：
0.4
通讯作者：
H. Bracken
中科院分区：
文献类型：
--
作者：
C. Varela;H. Bracken
OediceroidesStebding，1888代表了一组23种的两足类，生活在从浅海到深海平原的地区。这些物种大多是在南大西洋和太平洋的一些地方的深水中采集的，只有一个物种在地中海被发现。许多软体动物生活在超过200米深的水域，只有四种物种局限在浅水中。这是第一次在墨西哥湾记录到属于Oediceroides属的物种。在此，我们描述了即兴野生稻O.11月，在925米的水中采集到的一种海洋深水端足类。本种具有甲壳、口器和足周部特征，将它与本属的其他成员结合在一起。它不同于所有其他物种，因为它具有独特的嘴形和周足类7个特征，所有这些都在本描述中进一步详细讨论。到目前为止，墨西哥湾只记录了20种深海(200米)底栖两足动物，而同一地区有200多种浅水生物。我们的研究提供了证据，证明墨西哥湾的深水仍然拥有未被描述的生物多样性。
The genus Oediceroides Stebbing, 1888 represents a group of 23 species of amphipods that live from shallow coastal areas to abyssal plains. Most of these species have been collected in deep waters from localities in the South Atlantic and Pacific Oceans, and only one species has been found in the Mediterranean Sea. Many oediceroids inhabit waters more than 200 meters deep with only four species confined to shallow waters. This is the first occasion in which a species belonging to the genus Oediceroides is recorded for the Gulf of Mexico. Here, we describe O. improvisus sp. nov., a species of marine deep-water amphipod collected in 925 meters of water. This species has carapace, mouthpart and pereopodal characters that unite it with other members of the genus. It differs from all other species due to unique rostral and pereopod seven characters, all discussed in detail further in this description. To date, only 20 deep-sea (>200 meters) benthic amphipods have been recorded in the Gulf of Mexico, in comparison with more than 200 species of shallow water representatives from the same region. Our study provides evidence that the deep waters of the Gulf of Mexico still hold undescribed biodiversity.