Redescriptions and attachment modes of Hypermastus peronellicola and H. tokunagai (Prosobranchia: Eulimidae), ectoparasites on sand dollars (Echinodermata: Clypeasteroida) in Japanese waters.
Redescriptions and attachment modes of Hypermastus peronellicola and H. tokunagai (Prosobranchia: Eulimidae), ectoparasites on sand dollars (Echinodermata: Clypeasteroida) in Japanese waters.
复制标题
日本水域沙钱上的外寄生虫 Hypermastus peronellicola 和 H. tokunagai（原鳃亚纲：Eulimidae）的重新描述和附着模式。
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
K. Nagasawa
中科院分区：
文献类型：
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作者：
H. Matsuda;T. Hamano;S. Hori;K. Nagasawa
根据最近从濑户内海捕获的沙钱中采集的标本和模式标本，对真鳅属的两个物种进行了重新描述：来自 Peronella japonica 的 Hypermastus peronellicola (Kuroda & Habe, 1950) 和来自 Scaphechinus mirabilis 的 H. tokunagai (Yokoyama, 1922)。这两种真贝类的贝壳形态非常相似，但根据活体标本中贝壳长度与贝壳尺寸的比例、每个端壳螺轮的宽/长比、外唇边缘的突出部分以及通过半透明贝壳看到的内脏团的颜色等特征进行区分。 H. peronellicola 通过将长鼻插入宿主体内而附着在宿主身上，而 H. tokunagai 没有观察到长鼻穿透。
Two species of the eulimid genus Hypermastus are redescribed based on specimens recently collected from sand dollars caught in the Seto Inland Sea and the type specimens: Hypermastus peronellicola (Kuroda & Habe, 1950) from Peronella japonica, and H. tokunagai (Yokoyama, 1922) from Scaphechinus mirabilis. These two eulimid species are very similar in their shell morphology but are distinguished from each other based on characters such as the proportions of shell length to several dimensions of the shell, width/length ratios of each teleoconch whorl, the protruding part of the outer lip margin, and the coloration of the visceral mass that can be seen through the translucent shell in living specimens. H. peronellicola was attached to the host by inserting the proboscis into the host’s body, whereas no proboscis penetration was observed in H. tokunagai.