Productive tributary reservoirs can become suboptimal environments for fish during summer because of hypolimnetic hypoxia (≤3 mg O₂/L) and high epilimnetic temperatures that reduce access to quality habitat for growth. We conducted a laboratory experiment using a 3 × 3 × 2 (temperature × dissolved oxygen [DO] × fish size) complete factorial design to examine the effect of DO concentration and temperature on consumption, growth, and proximal body composition of juvenile hybrid Striped Bass (Striped Bass Morone saxatilis × White Bass M. chrysops), which are commonly stocked into North American reservoirs and for which tolerances to environmental conditions are not fully known. Our study demonstrates that consumption and growth of juvenile hybrid Striped Bass were affected by an interaction between temperature and DO. Specifically, low DO conditions negatively affected consumption, especially at high temperatures. By contrast, growth was largely unaffected by DO, except at high temperatures when low DO reduced fish growth. Temperature and DO did not interact to cause changes in energy density or moisture content, although temperature did independently affect the moisture content of hybrid Striped Bass tissues. The change in moisture content was lowest for fish exposed to high temperatures, suggesting a negative effect of temperature on fish condition. Collectively, our experimental findings provide useful information for modeling the energetics of hybrid Striped Bass and assessing reservoir habitat quality, which can help guide decision making regarding stocking.

中文翻译：

---

低氧和温度对少年杂交条纹鲈鱼消费，生长和状况的交互作用

夏季，由于低边际低氧（≤3 mg O ₂ / L）和高外向温度降低了通往优质生境的生长机会，生产性支流水库可能成为鱼类的次佳环境。我们使用3×3×2（温度×溶解氧[DO]×鱼大小）完全因子设计进行了实验室实验，以研究DO浓度和温度对少年杂交条纹鲈鱼的消耗，生长和近端身体组成的影响。 （条纹低音Morone saxatilis  ×白色低音M. chrysops），通常存放在北美水库中，并且对环境条件的耐受性尚不完全清楚。我们的研究表明，温度和溶解氧之间的相互作用会影响幼年杂交条纹鲈的消耗和生长。具体而言，低溶解氧条件会对消耗产生负面影响，尤其是在高温下。相比之下，溶解氧在很大程度上不受生长的影响，除非在高温下低溶解氧会降低鱼类的生长。温度和溶解氧没有相互作用，不会引起能量密度或水分含量的变化，尽管温度确实会独立影响杂交条纹鲈鱼组织的水分含量。暴露于高温的鱼的水分含量变化最低，表明温度对鱼的状况有负面影响。总的来说，