波罗的海入侵前线沿的圆形鸟种群中的大胆性和生理变异
Andrea Galli1, Jane W Behrens1, Manuel Gesto1
1Institute for Aquatic Resources (DTU Aqua), Technical University of Denmark, Anker Engelunds Vej 101, Kgs. Lyngby 2800, Denmark.
Physiology & behavior
|June 8, 2023
概括
侵入性圆形戈比菌的行为变化受当地环境的影响,而不仅仅是个性驱动的分散. 身体大小和身体状况,而不是生理学,影响这些鱼群的胆量.
科学领域:
- 生态生态学 生态生态学
- 侵入性物种 生物学 生物学
- 动物行为 动物行为
背景情况:
- 圆 (Neogobius melanostomus) 是一种入侵物种,影响淡水和水生态系统.
- 个人行为变化,特别是人格特征,被假设为驱动入侵传播和人口动态.
- 了解行为变异对于管理入侵物种至关重要.
研究的目的:
- 研究波罗的海入侵前线沿的入侵性圆形鸟种群的行为变异驱动因素.
- 为了比较最近建立和老年人群之间的性格特征 (大胆) 和生理应激反应.
- 确定个体个性,生理特征和环境因素之间的联系.
主要方法:
- 在波罗的海入侵前线研究了两个具有相似特征的圆形群.
- 在新和捕食者暗示语境中测量个人个性 (大胆).
- 分析了包括血液皮质醇,乳酸和大脑神经递质在内的生理参数.
- 评估人格,生理学,体型和身体状况之间的关系.
主要成果:
- 与老年人群相比,最近建立的人群对捕食者线索的勇气较小,尽管活动水平相似.
- 这两种人群表现出相似的生理应激反应.
- 在生理参数和对捕食者线索的行为反应之间没有发现直接关系.
- 身体大小和身体状况显著影响了个人的行为反应,这表明当地环境驱动因素超过了人格偏见的分散.
结论:
- 侵入性圆形鸟种群的行为组成可能更多地受到当地环境条件的影响,而不是个性偏差的分散.
- 大胆度是波罗的海圆种群的关键表型变异,对入侵研究很重要.
- 这些入侵鱼的行为变化背后的生理机制仍然不清楚,需要进一步调查.
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