Limnoperna fortunei (Dunker, 1856)

Ng, Ting Hui, Jeratthitikul, Ekgachai, Sutcharit, Chirasak, Chhuoy, Samol, Pin, Kakada, Pholyotha, Arthit, Siriwut, Warut, Srisonchai, Ruttapon, Hogan, Zeb S. & Ngor, Peng Bun, 2020, Annotated checklist of freshwater molluscs from the largest freshwater lake in Southeast Asia, ZooKeys 958, pp. 107-141 : 107

Limnoperna fortunei (Dunker, 1856) Fig. 2B

Volsella fortunei Dunker, 1856: 361, 362. Type locality: "Mare Chinense".

Limnoperna siamensis : Brandt 1974: 256.

Limnoperna fortunei : Morton and Dinesen 2010: 57-72.

Material examined.

ZRC.MOL.015660, ZRC.MOL.015661, ZRC.MOL.015664, ZRC.MOL.015665, ZRC.MOL.015666.

Distribution and habitat.

Tonle Sap River at Kampong Chhnang Province, and Tonle Sap Lake at Kampong Chhnang and Siem Reap Provinces (locality no. 8, 12, 37, 38 and 40). Occur in colonies attached by byssus threads to hard surfaces like man-made structures (e.g., boats, jetties, wooden pillars of homes), on unionid bivalves, and occasionally the shells of large freshwater gastropods.

Remarks.

Limnoperna fortunei is native to East Asia, and although previously thought to be naturally distributed in the countries south of China (e.g., Brandt 1974), has recently been proposed to be introduced to tropical Indochina, including Cambodia ( Morton and Dinesen 2010). However, its occurrence in Cambodia has been noted since the latter half of the 1800s (Suppl. material 1: Table S1, also see Morton and Dinesen (2010)). The species is known to be sympatric with Sinomytilus harmandi in Cambodia ( Morton and Dinesen 2010), and in fact, we found that both species are syntopic, as most colonies of Limnoperna fortunei included individuals of Sinomytilus harmandi .

Figures

Figure 2. Freshwater bivalves of the Tonle Sap basin, Cambodia (Arcidae, Mytilidae, Cyrenidae) A Scaphula minuta B Limnoperna fortunei C Sinomytilus harmandi D-G Corbicula spp. Scale bars: 10 mm, unless stated otherwise. Photographs by TH Ng (A-C) and K Macharoenboon (D-G).