Sökning: "warning colouration"

Hittade 2 avhandlingar innehållade orden warning colouration.

1. 1. Colour patterns in warning displays

   Författare :Marianne Aronsson; Gabriella Gamberale-Stille; Olof Leimar; Candy Rowe; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; aposematism; warning colouration; colour patterns; avoidance learning; generalization behaviour; signal design; signal evolution; conspicuousness; mimicry; etologi; Ethology;

   Sammanfattning : In aposematism a prey species use bright colours, often combined with a black contrasting pattern, to signal unprofitability as prey to potential predators. Although there are several different hypotheses about the presence of these internally contrasting patterns, there is little experimental evidence of any beneficial effects. LÄS MER

3. 2. Aposematism, Crypsis and Population Differentiation in the Strawberry Poison Frog

   Författare :Andreas Rudh; Anna Qvarnström; Jacob Höglund; Michael Speed; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; co-evolution; population divergence; natural selection; sexual selection; warning colouration; Oophaga pumilio; Dendrobates pumilio; aggression; explorative behaviour; colour patterns; Biologi med inriktning mot zooekologi; Biology with specialization in Animal Ecology;

   Sammanfattning : Evolutionary transitions between the two major predator avoidance strategies aposematism and crypsis are expected to be associated with changes in many important traits of animals. However, empirical studies on populations experiencing ongoing or recent transitions between these strategies are rare. LÄS MER