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发育性可塑性不会在物种相互作用期间改善表现:对物种周转的影响
Alexander A Mauro1,2, Kyndall R Zeller3, Julián Torres-Dowdall4
1Department of Biology, Centre for Biodiversity Dynamics (CBD), Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
Ecology
|January 13, 2025
概括
鱼 (Poecilia reticulata) 停留在淡水中,部分原因是盐分耐受性较低,这阻碍了它在水环境中与Poecilia picta鱼的竞争能力. 发育可塑性并没有改善其在盐水中的表现.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 生理学 生理学 生理学
背景情况:
- 物种相互作用和环境环境影响物种分布.
- 现型可塑性可以改变物种的环境容忍度和相互作用.
- 鱼 (Poecilia reticulata) 在特立尼达被限制在淡水中,尽管耐受水.
研究的目的:
- 研究盐度如何影响Poecilia reticulata和Poecilia picta之间的竞争相互作用.
- 确定急性和发育性盐度反应对鱼类竞争的作用.
- 了解限制Poecilia reticulata.淡水范围的因素.
主要方法:
- 在没有竞争的情况下比较P. reticulata和P. picta的盐度公差.
- 在淡水和水中养P. reticulata,以评估发育可塑性.
- 在不同的盐度条件下测试了P. reticulata和P. picta之间的竞争性相互作用.
主要成果:
- P. reticulata 的盐分耐受性低于 P. picta 的盐分耐受性.
- 在P. reticulata和P. picta的竞争中,结果取决于盐度.
- 在水中的发展并没有提高P. reticulata在水条件下的竞争力.
结论:
- P. reticulata的淡水范围受到减少的盐度耐受性和水中的竞争劣势的限制.
- 非适应性可塑性可以限制物种范围的扩张,这与适应性可塑性在殖民中的作用相反.
- 环境背景极大地影响了物种的相互作用和分布极限.
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