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首页> 外文期刊>The Progressive Fish-Culturist >Factors affecting rearing of settled zebra mussels in a controlled flow-through system
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Factors affecting rearing of settled zebra mussels in a controlled flow-through system

机译：在受控流通系统中影响沉降斑马贻贝饲养的因素

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摘要

The growth of the settled zebra mussel Dreissena polymorpha was analyzed in a controlled flowthrough system with fresh unicellular alga Selenastrum capricornutum as the food. Stocks of live algae from a light-regulated chemostat were diluted and metered continuously into rearing tanks that contained the mussels. Growth and migration of the mussels inside the tank were recorded over a 3-month period, Small mussels (13 mm) migrated frequently and had a high mortality rate (>99%). The mortality rate of the larger mussels (>12 mm) was lower (25%). Larger size mussels seldom migrated, but they did not increase in size during the entire 3-month period. Medium-size mussels (3-12 mm) exhibited strong photophobic behavior. Significant growth was observed in individuals that settled in dim places away from rapid water current. Results suggested that illumination should be examined as a potential detererent to the settling of this organism.
机译：在控制的流通系统中，以新鲜的单细胞藻类硒菜丝荚藻为食物，分析了斑马贻贝Dreissena polymorpha的生长。将来自受光调节的恒化器的活藻类股票稀释并连续计量到装有贻贝的饲养池中。在三个月内记录了池中贻贝的生长和迁移，小型贻贝（13毫米）迁移频繁，死亡率高（> 99％）。较大贻贝（> 12毫米）的死亡率较低（25％）。大型贻贝很少迁徙，但在整个3个月的时间内并未增大。中型贻贝（3-12毫米）表现出很强的憎光性能。在远离快速水流的昏暗地方定居的个体中观察到显着的生长。结果表明，应检查光照，以防止这种生物沉降。

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