A new Sphaeronella species (Copepoda: Siphonostomatoida: Nicothoidae) parasitic on Euphilomedes sp. (Ostracoda: Myodocopa: Philomedidae) from Hokkaido, Japan, with an 18S molecular phylogeny
A new Sphaeronella species (Copepoda: Siphonostomatoida: Nicothoidae) parasitic on Euphilomedes sp. (Ostracoda: Myodocopa: Philomedidae) from Hokkaido, Japan, with an 18S molecular phylogeny
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寄生在 Euphilomedes sp 上的一个新的 Sphaeronella 种（桡足类：管口类：烟科）。
DOI：
10.1007/s11230-022-10075-z
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发表时间：
2022
影响因子：
1.3
通讯作者：
M. Munakata
中科院分区：
文献类型：
--
作者：
K. Kakui;M. Munakata
Sphaeronella约有80种，是桡足科尼古丁科种最丰富的属。到目前为止，已有20个命名的Sphaeronella种被报告为介形类甲壳类的体外寄生虫。本文描述了乌耶诺球藻Sphaeronella uyenoi。11月寄生于介形类介形虫EuPhilomedes sp.采集自日本北海道阿克什湾，太平洋西北部。Sphaeronella uyenoi与S.monothrix(Bowman&Koricker，1967)最相似，寄生在大西洋西北部鲍曼和Koricker的圆柱状副星虫pollex Koricker上，但与后者的不同之处在于：(1)次正中骨骼包含成对的、强烈几丁质化的Λ形区域和成对的宽长圆形孔，在后面带有强烈几丁质化的流苏，(2)上脚节3具有前-亚远端锯齿。我们测定了乌氏血吸虫细胞色素C氧化酶亚基I(COI)和18S rRNA(18S)基因的部分序列，并构建了基于18S的桡足类系统发育树。在我们的树上，烟科不是单系分类，而乌伊诺伊烟科是Cancerilla sp.的姊妹分类单元。在巨蟹科(脆星上的体外寄生虫)。
With about 80 species, Sphaeronella is the most species-rich genus in the copepod family Nicothoidae. To date, 20 named Sphaeronella species have been reported as ectoparasites on ostracod crustaceans. Here we describe Sphaeronella uyenoi sp. nov. parasitic on the philomedid ostracod Euphilomedes sp. collected from Akkeshi Bay, Hokkaido, Japan, northwestern Pacific. Sphaeronella uyenoi most closely resembles S. monothrix (Bowman & Kornicker, 1967), parasitic on the cylindroleberidid Parasterope pollex Kornicker in Bowman & Kornicker in the northwestern Atlantic, but differs from the latter in having (1) the submedian skeleton containing paired, strongly chitinized, Λ-shaped areas and paired wide oblong holes bearing a strongly chitinized fringe posteriorly, and (2) maxillipedal segment 3 with antero-subdistal serration. We determined partial sequences for the cytochrome c oxidase subunit I (COI) and 18S rRNA (18S) genes for S. uyenoi and constructed an 18S-based phylogenetic tree of copepods. In our tree, Nicothoidae was not monophyletic, and S. uyenoi was the sister taxon to Cancerilla sp. in Cancerillidae (ectoparasites on brittle stars).
影响因子：
10.7
作者：
Kumar, Sudhir;Stecher, Glen;Tamura, Koichiro
通讯作者：
Tamura, Koichiro