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一种软体动物 来自维基百科,自由的百科全书
长棘星螺(学名:Guildfordia yoka),又名長刺螺[3],是一種深海海螺的物種,屬於海洋腹足綱軟體動物的蝾螺科刺螺屬的一個物種[4][5]。
长刺螺![]() | |
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Shell of Guildfordia yoka. Museum specimen | |
科学分类 ![]() | |
界: | 动物界 Animalia |
门: | 軟體動物門 Mollusca |
纲: | 腹足纲 Gastropoda |
目: | 鐘螺目 Trochida |
总科: | 鐘螺總科 Trochoidea |
科: | 蠑螺科 Turbinidae |
属: | 刺螺屬 Guildfordia |
种: | 长刺螺 G. yoka
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二名法 | |
Guildfordia yoka Jousseaume, 1899[1]
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異名 | |
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這種熱帶的海洋生物物種棲息於西太平洋的日本和菲律賓對開海域,見於水深200、500米(660、1,640英尺)的海洋[6]; 也見於中国大陆、台湾[4]。常栖息在潮下带[4]。
The size of the shell varies between 70、105 mm(2.8、4.1英寸). The color pattern of the shell varies from very light brownish to purple-brown. Some specimens contain only 6 whorls instead of 7 as in the holotype. The upper whorls are smooth, then follows the body whorl with scarcely 2 rows of granules, instead of 7 or 8. Towards the keel it has very irregular radiating ribs, which leave however a nearly smooth zone above the keel, with only a few spiral striae.
The base of the shell is less convex than the upper part. Some specimens lack the rose-coloured line round the umbilical callosity. The aperture is oval, thick, with the nucleus in the external lower corner. The outer surface is slightly rugose, by irregular wrinkles, almost parallel with the basal margin of the operculum. The nucleus is marked by an olive spot.[2]
Embryos of Guildfordia yoka develop into free-swimming planktonic larvae with several bands of cilia (trocophore). Later they develop into juvenile veligers, finally into fully grown adults.[6]
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