Multiple benefits of gregariousness cover detectability costs in aposematic aggregations
Article Abstract:
Research describing the predation related costs and benefits for aposematic aggregated prey is presented. In particular a novel world experiment with the great tit, Parus major, is investigated.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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Tracking the evolution of warning signals
Article Abstract:
In the evolution of aposematism, the prey first form warning signals based on aggregation and kin grouping. Similar signals evolve in solitary prey when the predator learns to associate the signals with unpalatability. This shows that Fisher's view of kin aggregation-based aposematism holds good for inexperienced predators. However, the evolution of Mullerian mimicry complexes in solitary prey is seen when the predators learn to distinguish the aposematisms.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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Can aposematic signals evolve by gradual change?
Article Abstract:
Aposematic species that conspicuously signal their unprofitability to predators have been a puzzle for evolutionary biologists. Conspicuousness of unpalatable prey improves predator avoidance learning, but with increasing detectability a deviant aposematic prey could suffer initial high predation from naive predators. The idea that aposematic coloration could evolve through gradual change and not by major mutation, is tested. Weak signals did not encounter high initial predation, although predators did not learn to separate them from cryptic palatable prey.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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