珠螺
珠螺（學名：Lunella coronata，臺灣話：tsu-lê），臺灣澎湖當地俗稱大頭仔（臺灣話：tuā-thâu-á）、大頭螺仔（臺灣話：tuā-thâu-lê-á），是鐘螺目蠑螺科珠螺屬的一個腹足綱軟體動物物種[2]。
珠螺
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| Five views of a shell of Lunella coronata | |
科學分類 
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| 界： | 動物界 Animalia |
| 門： | 軟體動物門 Mollusca |
| 綱： | 腹足綱 Gastropoda |
| 目： | 鐘螺目 Trochida |
| 總科： | 鐘螺總科 Trochoidea |
| 科： | 蠑螺科 Turbinidae |
| 屬： | 珠螺屬 Lunella |
| 種： | 珠螺 L. coronata
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| 二名法 | |
| Lunella coronata (Gmelin, 1791)
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| 異名[2] | |
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形態描述
編輯The shell grows to a length of 4 cm, with conspicuous flattened, cup-like scales interspersed by small, regular rows of nodules. The colour of the shell is pale to greenish, flecked with purplish-brown markings (often encrusted with light pink coralline algae). The 螺厴 is smooth to faintly granular with pale green centre. (Richmond, 1997).
The solid, imperforate shell has a depressed-turbinate shape with a diameter greater than the altitude. It is covered with an irregular spiral series of nodules and granules, of which the subsutural series and two on the median portion of the body whorl are more prominent. The spire is depressed, dome-shaped with an apex that is frequently eroded and red. The shell contains 4 to 5 whorls, the last very large. The large 殼口 is round and iridescent within. The wide columella is flattened and excavated, deflexed recurved and somewhat channelled at its base, The inside of the 螺厴 is flat, greenish and golden, iridescent, with about 5–6 whorls and a subcentral nucleus. Its outside is convex, greenish, sparsely granulate all over.
The species is subject to a wide variation. The passage from the strongly tuberculate forms into those in which the transverse striae simply cut the lirae into diamonds or granules is made by imperceptible degrees.[3]
分佈
編輯棲息地
編輯常棲息在沿海岩礫或岩礁的潮間帶及或潮池，以岩礁上的海藻生物為食[1]
參考文獻
編輯- Dautzenberg, Ph. (1929). Contribution à l'étude de la faune de Madagascar: Mollusca marina testacea. Faune des colonies françaises, III(fasc. 4). Société d'Editions géographiques, maritimes et coloniales: Paris. 321–636, plates IV-VII pp.
- Herbert D.G. (1988). Studies on Priotrochus obscurus and the systematics position of Priotrochus (Mollusca: Gastropoda: Trochidae). Journal of zoology 214: 561–268.
- Branch, G.M. et al. Two Oceans. Cate Town & Johannesburg: David Philip. 1994 [2022-11-26]. （原始內容存檔於2022-03-19） （英語）.
- Alf A. & Kreipl K. (2003). A Conchological Iconography: The Family Turbinidae, Subfamily Turbininae, Genus Turbo. Conchbooks, Hackenheim Germany.
- Nakano T., Takashashi K. & Ozawa T. (2007) Description of an endangered new species of Lunella (Gastropoda: Turbinidae) from the Ogasawara Islands, Japan. Venus 66(1–2): 1–10.
外部連結
編輯- Hardy, Eddie. Lunella (Lunella) coronatus. Hardy's Internet Guide to Marine Gastropods. [16 January 2019]. （原始內容存檔於2020-06-28） （英語）.