Wedge clam, Donax scortum occurrence was studied from February 2009 to January 2010 in Padukere sandy beach, Karnataka (India). The following biological parameters were measured in 2367 individuals of the wedge clam, Donax scortum: length, breadth, width, total weight, shell weight, wet meat weight, dry meat weight and number of clams. The calculated linear equation of length-breadth and length-width relationships were B = 3.5968 + 0.5421L and W = 0.8191 + 0.4345L respectively. The length-total weight, length-wet meat weight, length-dry meat weight and length-shell weight relationships were 0.0001414L3.0224, W = 0.0000037L3.5204, W = 0.0000011L3.4513 and 0.0000852L2.9912 respectively. The values of correlation coefficient for different shell dimensional relationships were very close to unity. It was clear from the study that the most ideal period for clam harvest was April, June and December, especially when condition index was maximum. Length showed a strong correlation with silt and clay. Dry meat weight was negatively correlated with air temperature. Shell weight showed positive correlation with length, breadth, width and dry meat weight, and abiotic parameters, silt and clay. Condition index was positively correlated with electrical conductivity, whereas it was negatively correlated with dissolved oxygen. It showed a strong positive correlation with salinity. Seasonal fluctuation of condition index in D. scortum was probably related to reproductive activity. The harvesting of wedge clam could be carried out considering the maximum sustainable yield without over-exploitation

2009年2月至2010年1月在印度卡纳塔克邦的帕多克雷沙滩研究了楔形蛤，多纳克斯皮层的发生情况。在2367个楔形蛤Don（Donax scortum）个体中测量了以下生物学参数：长度，宽度，宽度，总重量，壳重，湿肉重量，干肉重量和蛤number数量。计算的长度-宽度关系和长度-宽度关系的线性方程分别为B = 3.5968 + 0.5421L和W = 0.8191 + 0.4345L。长度-总重量，长度-湿肉重量，长度-干肉重量和壳长重量关系为0.0001414L 3.0224，W = 0.0000037L 3.5204，W分别为0.0000011L 3.4513和0.0000852L 2.9912。不同壳尺寸关系的相关系数值非常接近统一。从研究中可以明显看出，蛤lam收获的最理想时期是4月，6月和12月，尤其是当条件指数最大时。长度与淤泥和粘土有很强的相关性。干肉重量与气温呈负相关。壳重与长度，宽度，宽度和干肉重量以及非生物参数，淤泥和黏土呈正相关。条件指数与电导率呈正相关，而与溶解氧呈负相关。与盐度呈强正相关。疾病指数的季节性波动D. scortum可能与生殖活动有关。楔形蛤的收获可以考虑最大的可持续产量而不会过度开发