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首页> 外文期刊>Archiv fur Hydrobiologie >The respiration and filter-feeding rates of the snail Viviparus viviparus (Gastropoda) under simulated stream conditions
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The respiration and filter-feeding rates of the snail Viviparus viviparus (Gastropoda) under simulated stream conditions

机译：模拟溪流条件下蜗牛Viviparus viviparus（Gastropoda）的呼吸和滤食率

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In the lowland river Spree in north-east Germany, the freshwater snail Viviparus viviparus comprises 35% of the total invertebrate biomass. Viviparus viviparus is able to obtain food by both grazing and filter-feeding. We investigated the seston removal rate and the respiration rate under simulated stream conditions. We measured three different size classes of snails at ambient temperatures ranging from 10 degreesC to 21 degreesC. The relationship between the snails' soft tissue dry mass (DM) and the height of the shell was: DM [g] = 0.01.shell height(3.1) [cm]. We found respiration rate to be 1-5 mg O-2 g DM-1 h(-1). Respiration rate was significantly higher in smaller specimens (p < 0.05), and increased significantly with higher temperatures (p < 0.05). The Q(10)-value was approximately 2. We found the seston removal rate to be 0.2-14 mg DM seston g DM-1 h(-1). There was a positive correlation between the seston concentration and the seston removal rate, and seston removal rate was significantly correlated with specimen size (p < 0.05). In the largest size class we found also a correlation between temperature and seston removal rate (p < 0.05). Since respiration and filtration are supported by the same anatomic organ, the gill, respiration and filtration rates were also correlated (p < 0.05). In the plankton-rich environment provided by the River Spree, filter-feeding can be the main feeding mechanism for V viviparus during the summer months. [References: 28]
机译：在德国东北部的低地施普雷河中，淡水蜗牛Viviparus viviparus占无脊椎动物生物量的35％。 Viviparus viviparus能够通过放牧和过滤喂食获得食物。我们研究了模拟河流条件下的去除率和呼吸率。我们在10摄氏度至21摄氏度的环境温度下测量了三种不同尺寸的蜗牛。蜗牛的软组织干重（DM）与壳的高度之间的关系为：DM [g] = 0.01。壳的高度（3.1）[cm]。我们发现呼吸频率为1-5 mg O-2 g DM-1 h（-1）。在较小的标本中，呼吸频率显着较高（p <0.05），而在较高温度下，呼吸频率显着增加（p <0.05）。 Q（10）值大约为2。我们发现精子去除速率为0.2-14 mg DM精浆g DM-1 h（-1）。精子浓度与精子去除率之间呈正相关，精子去除率与标本大小显着相关（p <0.05）。在最大的体型中，我们还发现温度与精子清除率之间存在相关性（p <0.05）。由于呼吸和滤过受同一解剖器官支持，因此腮，呼吸和滤过率也相关（p <0.05）。在施普雷河提供的浮游生物丰富的环境中，滤食可能是夏季食蟹鱼的主要摄食机制。 [参考：28]

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