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2001年3～9月在青岛海区自然养殖状态下,利用沉积物收集器测定厚壳贻贝(Mytiluscrassitesta)的生物沉积及其对物质的输运,并采用灰分比例法计算厚壳贻贝的同化率。结果显示,厚壳贻贝的同化率分别为:小个体(壳长42～49mm)43 2%～59 9%、中等个体(壳长54～60mm)41 3%～56 1%、大个体(壳长65～74mm)47 6%～53 5%,平均值分别为51 6%、49 5%和52 5%。厚壳贻贝通过生物沉积作用加速海洋中颗粒物质的沉积,生物沉积率随个体的增大而增加,呈正相关关系,分别为:小个体[(42 3±4 4)～(77 9±10 8)]mg·ind-1·d-1,中等个体[(68 5±5 8)～(134 1±12 7)]mg·ind-1·d-1和大个体[(83 4±10 4)～(167 1±10 8)]mg·ind-1·d-1。海水温度和环境中饵料数量是影响厚壳贻贝的生物沉积的重要因子。
Sediment collector was used to determine the bio-deposition and transport of Mytilus crassitesta under natural culture in Qingdao sea area from March to September in 2001. The assimilation of mussel rate. The results showed that the assimilation rates of the mussels were 43 2% -59 9% for small individuals (shell length 42-49 mm), 41 3% -56 1% for medium-sized individuals (shell length 54-60 mm), large individuals Shell length 65 ~ 74mm) 47 6% ~ 53 5%, the average values were 51 6%, 49 5% and 52 5%. Thick shell mussels accelerated the deposition of particulate matter in the oceans by bio-sedimentation. The bio-deposition rate increased with the increase of individuals, and there was a positive correlation between the sedimentation rate and the sedimentation rate of small mussels [(42 3 ± 4 4) ~ (77 9 ± 10) (68 ± 5 8) to (134 ± 12 7)] mg · ind-1 · d-1 and large individuals [(83 4 ± 10) mg · d-1 · d- 4) ~ (167 1 ± 10 8)] mg · ind -1 · d -1. The seawater temperature and the amount of food in the environment are important factors affecting the bio-deposition of the mussel shellfish.