Feeding Physiology of Scallop Patinopecten Yessoensis and Population Filtering Capacity in Zhang Zidao Island Aquacultural Area

Abstract

Abstract: For the purpose of establishing the evaluation model of patiaopecten yessoensis carrying capacity in Zhang Zidao Island waters,the semi-in-situ flowing-through system and the biogenic sediment method were used to measure the clearance rate (CR),feeding and intaking rate of difference size scallops in different seasons.The relationship of clearance rate and water temperature was studied.Through 4 transect’s field surveys,the biomass and shell heights distribution in the areas were got.The results showed that among these experimental conditions,the clearance rate (CR) was highest in May,average CR was 1.05±0.25 L.ind-1.h-1.The relationship of water temperature and CR is same as the parabola line,the CR arrived the peak value at 10 ℃.According to the relationship of CR and shell height,the biomass and shell height distribution in the areas,the population clearance rates in different months were calculated.And combining with the data of average tide range and total surface areas,the food limited indictor-clearance efficiency (CE) was assessed;the average value of CE was 0.054,which was much lower than 1.The results showed that the cultivated density in Zhang Zidao Island is lower than the carrying capacity,which means that the aquacultural industry of the scallop in the area still has a large potential developing space.

Key words: Patinopecten yessoensis, feeding physiology, Zhang Zidao Island, carrying capacity

ZHANG Ji-Hong, FANG Jian-Guang, WANG Wei, JIANG Zeng-Jie, ZANG You-Cai, WANG Shi-Huan, ZHANG Yuan. Feeding Physiology of Scallop Patinopecten Yessoensis and Population Filtering Capacity in Zhang Zidao Island Aquacultural Area[J]. journal6, 2007, 28(4): 85-90.

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