Spatial distribution of the edible mussels Lamellidens marginalis (Lamarck) (Bivalvia: Unionidae) in a pond in West Bengal, India

印度孟加拉西部淡水池中食用蚌Lamellidens margillalis的空間分布（雙殼綱：蚌科）

A. Biswas ； S. K. Raut

《國立臺灣博物館半年刊》 52卷2期 (1999/12) Pp. 79-85

https://doi.org/10.6532/JNTMA.199912_52(2).0006

摘要

Spatial distribution in the freshwater edible mussels Lamellidens marginalis has been studied in a fish pond located at Thakumagar, West Bengal, India. It is revealed that the juvenile mussels arc confined to the edge of the pond up to 60 cm water depths while the gravid individuals arc mostly restricted to around I m depth area of the pond. The aged individuals though very less in number arc disperssed to areas beyond I m depth but within 2.2 m water depth. There exists a strong correlation between the density of mussels and the amount of dissolved oxygen present in water. More the amount of dissolved oxygen in water higher is the number of L. marginalis. The areas of the pond confined within water depths 0-60 cm are preferred zone for embedment of juveniles while the gravid individuals have preference for the areas between 60.1 and 120 cm water depths.

關鍵字

edible mussel ； pond ； spatial distribution ； factors ； India

並列摘要

在印度孟加拉西部Thakumagar地方，我們研究了一個淡水魚池中的食用蚌Lamellidens marginalis的空間分布。研究結果顯示，幼小的蚌多局限在水池的邊緣到60公分深的水區，有生育力的蚌則生活在大約1公尺深的水區，年老的蚌數量很少，分布在水池中1公尺以上至2.2公尺深的水區。在水池中，蚌分布的密度和水中的溶氧量之間，有密切的關連，溶氧量愈高的地方，蚌的數量愈多。幼小的蚌喜歡埋藏在水深0-60公分的水區內，有生育力的蚌喜歡埋藏在水深60.1到120公分之間的水區內。

並列關鍵字

食用蚌 ； 水池 ； 空間分布 ； 因素 ； 印度