瘤蜷 · 茶年 · 中文维基百科

瘤蜷（学名：**'）

形態描述
殼略厚，右旋，殼色為黃褐色到深褐色，殼上具顆粒狀突起，體螺層下半部為粗肋。殼有兩型：短胖型及細長型，縫合線相當明顯。

有關本物種的詳細解剖構造由於1952年發表，連同在生物學及方面的筆記；而Malek (1962)亦為本物種提供了一份解剖指南。

The maximum height of adult shells of this species from South Africa is from 18.5 mm to 25.1 mm, Taiwan, ,

Nonidigenous distribution
Tarebia granifera has become invasive on at least three continents: North and South America and Africa. Florida, Texas
*
** 圣卢西亚

Central America: The Tarebia granifera was reported from South Africa (and Africa) for the first time in 1999 in northern 夸祖魯-納塔爾省 though it was probably introduced sometime prior to 1996.

Typically half or more of these snails were buried in the 沉積物s and were not visible from the surface. who reported it migrating upstream on the Caribbean island of 圣卢西亚 at a rate of 100 m month−1 in streams discharging up to 50 l.s−1. for Tarebia granifera in its native 香港 (18–193 m−2). Live sperm were present in the testes of these males but the were apparently non-functional. cite the same statistic that females can give birth to one juvenile every 12 hours. Ferrer López et al. (1989) and by Fernández et al.(1992) and they resulted that sexual maturity is reached at an age of about five months.；另有一種名為（*' (Nishigori, 1924)）的棘带吸虫属物種（也是異形吸蟲科的成員），也是重要的魚類鰓寄生蟲 The snail host implicated in this outbreak was Melanoides tuberculata but the rapid spread and high population densities achieved by Tarebia granifera, which appears to be replacing Melanoides tuberculata* in South Africa, may exacerbate the problem in the future.，但1992年時Michelson的研究證明這個假設錯了。

Other interspecific relationships
Tarebia granifera have been associated with the disappearance of two indigenous benthic gastropod species from rivers in 波多黎各 and have displaced the vegetation-associated pulmonate **' from streams and ponds on several Caribbean islands. Although the responsible mechanism is not understood, this has led to suggestions that it could be useful as a 生物防治 agent in snail control operations within integrated 血吸虫病 control programmes.

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