Competitive asymmetry and local adaptation in Trinidadian guppies
نویسندگان
چکیده
منابع مشابه
Local adaptation in Trinidadian guppies alters ecosystem processes.
Theory suggests evolutionary change can significantly influence and act in tandem with ecological forces via ecological-evolutionary feedbacks. This theory assumes that significant evolutionary change occurs over ecologically relevant timescales and that phenotypes have differential effects on the environment. Here we test the hypothesis that local adaptation causes ecosystem structure and func...
متن کاملLocal adaptation and the evolution of phenotypic plasticity in Trinidadian guppies (Poecilia reticulata).
Divergent selection pressures across environments can result in phenotypic differentiation that is due to local adaptation, phenotypic plasticity, or both. Trinidadian guppies exhibit local adaptation to the presence or absence of predators, but the degree to which predator-induced plasticity contributes to population differentiation is less clear. We conducted common garden experiments on gupp...
متن کاملLocal predation risk shapes spatial and foraging neophobia patterns in Trinidadian guppies
The "dangerous niche" hypothesis posits that neophobia functions to reduce the cost of habitat use among animals exposed to unknown risks. For example, more dangerous foraging or higher competition may lead to increased spatial neophobia. Likewise, elevated ambient predation threats have been shown to induce phenotypically plastic neophobic predator avoidance. In both cases, neophobia is argued...
متن کاملTesting the influence of local forest canopy clearing on phenotypic variation in Trinidadian guppies
1. Factors contributing to the maintenance of phenotypic variation in nature are often difficult to determine. Secondary sexual traits might be particularly interesting in this regard due to the interaction they experience between multiple selective agents. One way to examine such effects is to monitor populations following environmental change. Human-caused changes can be particularly useful h...
متن کاملRapid evolution of escape ability in Trinidadian guppies (Poecilia reticulata).
Predators are widely assumed to create selection that shapes the evolution of prey escape abilities. However, this assumption is difficult to test directly due to the challenge of recording both predation and its evolutionary consequences in the wild. We examined these events by studying natural and experimental populations of Trinidadian guppies, Poecilia reticulata, which occur in distinct hi...
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ژورنال
عنوان ژورنال: Journal of Animal Ecology
سال: 2018
ISSN: 0021-8790,1365-2656
DOI: 10.1111/1365-2656.12918