AI Article Synopsis

  • Environmental changes like temperature and turbidity significantly influence predator-prey dynamics among wild fish, specifically Trinidadian guppies.
  • The study showed that environmental factors accounted for 17.6% of the differences in predator species composition, with certain conditions favoring predator presence.
  • Warmer, deeper, and clearer waters led to increased predator behavior, such as quicker responses to prey and more frequent attacks, emphasizing the importance of understanding multiple environmental stressors in ecological studies.

Article Abstract

Environmental change can alter predator-prey dynamics. However, studying predators in the context of co-occurring environmental stressors remains rare, especially under field conditions. Using in situ filming, we examined how multiple stressors, including temperature and turbidity, impact the distribution and behaviour of wild fish predators of Trinidadian guppies (Poecilia reticulata). The measured environmental variables accounted for 17.6% of variance in predator species composition. While predator species differed in their associations with environmental variables, the overall prevalence of predators was greatest in slow flowing, deeper, warmer and less turbid habitats. Moreover, these warmer and less turbid habitats were associated with earlier visits to the prey stimulus by predators, and more frequent predator visits and attacks. Our findings highlight the need to consider ecological complexity, such as co-occurring stressors, to better understand how environmental change affects predator-prey interactions.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11137014PMC
http://dx.doi.org/10.1038/s42003-024-06364-6DOI Listing

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