A new species of Osedax (Annelida: Siboglinidae) associated with whale carcasses off Kyushu, Japan
A new species of Osedax (Annelida: Siboglinidae) associated with whale carcasses off Kyushu, Japan
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DOI：
10.2108/zsj.23.733
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发表时间：
2006-08-01
影响因子：
0.9
通讯作者：
Kawato, Masaru
中科院分区：
文献类型：
--
作者：
Fujikura, Katsunori;Fujiwara, Yoshihiro;Kawato, Masaru
在日本九州野崎角附近约200米深的抹香鲸身体上发现了一种新的食鲸骨多毛类Osedax属。该新种Osedaxiaponicus是Osedax属的第四个已知物种，也是西太平洋的第一个物种。雌性日本沼虾标本(1)在鲸鱼身体上形成致密的簇状；(2)身体由树冠、躯干和根结构组成；(3)没有消化道；(4)根结构的组织中有细菌样颗粒。日本Osedax japonicus的上述特征与Rubiplus和O.frkpressi相同，与粘花Osedax的(1)至(3)项相同。根据雌性的输卵管形态、体长和触须颜色，OsedaxJapan onicus很容易与其他三个已知物种区分开来。目前还没有发现日本对虾的雄鱼。
A new whale-bone-eating polychaete species of the genus Osedax was found on sperm whale carcasses submerged off Cape Nomamisaki, Kyushu, Japan, at a depth of approximately 200 m. The new species, Osedaxiaponicus, is the fourth known species of the genus Osedax and the first species from the western Pacific. Female O. japonicus specimens (1) form dense clusters on whale carcasses; (2) have a body composed of crown, trunk, and root structure; (3) lack a digestive tract; and (4) have bacterium-like particles in the tissue of the root structure. Osedax japonicus shares all these characteristics with O. rubiplumus and O. frankpressi, and items (1) to (3) with O. mucofloris. Osedaxjaponicus is easily distinguished from the other three known species by oviduct morphology, body length, and palp coloration in females. No males of O. japonicus have yet been found.