Psychological Aposematism: An Evolutionary Analysis of Suicide
نویسندگان
چکیده
منابع مشابه
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We analyze a model in which individuals have hereditary reproductive types. The reproductive value of an individual is determined by her reproductive type and the amount of resources she can access. We introduce the possibility of suicide and assume it is also a genetic trait that interacts with the reproductive type of an individual. The main result of the paper is that populations where suici...
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What is aposematism? The word comes from the Greek apo (away) and sema (sign) and describes a strategy whereby animals warn predators about their unprofitability. It consists of two elements: a primary defence, such as distinctive colours, odours or sounds, that operates before the predator attacks; and a secondary defence, be it chemical, morphological or behavioural that make prey unprofitabl...
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Inconspicuous prey pay a cost of reduced feeding opportunities. Flowers are highly nutritious but are positioned where prey would be apparent to predators and often contain toxins to reduce consumption. However, many herbivores are specialized to subvert these defenses by retaining toxins for their own use. Here, we present a model of the growth and life history of a small herbivore that can fe...
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The majority of species are under predatory risk in their natural habitat and targeted by predators as part of the food web. During the evolution of ecosystems, manifold mechanisms have emerged to avoid predation. So called secondary defences, which are used after a predator has initiated prey-catching behaviour, commonly involve the expression of toxins or deterrent substances which are not ob...
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ژورنال
عنوان ژورنال: Biological Theory
سال: 2020
ISSN: 1555-5542,1555-5550
DOI: 10.1007/s13752-020-00353-8