Physiological and Behavioural Aspects of Swimming in sturgeon.

鲟鱼游泳的生理和行为方面。

• 批准号: 194098-2012
• 负责人: Kieffer, James
• 金额: $ 1.82万
• 依托单位: University of New Brunswick
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=546048
• 关键词: Physiological; Behavioural; Aspects; Swimming; sturgeon.

Animals use many locomotor strategies for survival in various habitats. Many factors (e.g., predator-prey interactions) are of profound ecological importance and depend heavily on a fish's ability to swim. Swimming efficiency and performance is related to a species' physiology, morphology and behaviour, and environmental challenges the animal faces (e.g., temperature change, velocity changes). The focus of my research program is to understand the influence of various abiotic and biotic factors on the swimming capacity of sturgeon, a "primitive fish". The rationale for utilizing sturgeon is many-fold, including: (i) biological, because of its intermediate evolutionary position between elasmobranchs (sharks) and teleosts, (ii) their excellent capacity to deal with acute and chronic stressors, and (iii) commercial, owing to their highly prized meat and caviar. Unlike the other species of fish we have studied in the past, our recent findings have shown that sturgeon possess unique morphology and behaviour that affect their swimming patterns. The long-term objective is to address the interplay of behaviour, morphology and physiology on the metabolic costs of swimming in sturgeon. The short term goals here focus on the costs of transport, swimming efficiency, and metabolic fuel use patterns (i.e., whether they use carbohydrates, lipids or proteins) at different speeds in sturgeon. In addition, we will examine the metabolic costs of swimming associated with different substrate types (sand, cobble, etc). The proposed experiments, using swim flume technology, are designed to test novel hypotheses with regard to metabolic costs associated with swimming in a primitive fish. Findings will add significantly to our understanding of evolution of locomotory performance in fish, including physiological adaptations to the environment.

动物使用许多运动策略在不同的栖息地生存。许多因素（例如，捕食者与猎物之间的相互作用）具有深远的生态重要性，并且在很大程度上取决于鱼的游泳能力。 游泳效率和表现与物种的生理、形态和行为以及动物面临的环境挑战有关（例如，温度变化，速度变化）。 我的研究计划的重点是了解各种非生物和生物因素对鲟鱼这种“原始鱼类”游泳能力的影响。 利用鲟鱼的理由是多方面的，包括：（一）生物性，因为它处于板鳃类（鲨鱼）和硬骨鱼类之间的中间进化地位;（二）它们处理急性和慢性应激源的出色能力;（三）商业性，因为它们的肉和鱼子酱非常珍贵。 与我们过去研究的其他鱼类不同，我们最近的研究结果表明，鲟鱼具有独特的形态和行为，影响它们的游泳模式。 长期目标是解决行为，形态和生理学的相互作用对鲟鱼游泳的代谢成本。 这里的短期目标集中在运输成本、游泳效率和代谢燃料使用模式（即，无论它们使用的是碳水化合物、脂质还是蛋白质）。 此外，我们将研究与不同基质类型（沙子，鹅卵石等）相关的游泳代谢成本。 拟议中的实验，使用游泳水槽技术，旨在测试新的假设与游泳在一个原始的鱼的代谢成本。 研究结果将大大增加我们对鱼类运动性能进化的理解，包括对环境的生理适应。