Colour, fat and social status in male damselflies, Calopteryx maculata

Article Abstract:

A new study shows that colour is a subtle cue to fat and social status in male damselflies. The basic mechanism of the process is explained.

Animal behavior

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Interspecific territoriality in Calopteryx damselflies: the role of secondary sexual characters

Article Abstract:

The role of the secondary sexual qualities like pigmented wing spots in determining the territorial behavior of damselflies (genus Calopteryx) is studied.

Finland, Science & research, Usage, Territoriality (Zoology), Animal territoriality, Sex characteristics

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Handicap signalling: when fecundity and viability do not add up

Article Abstract:

Honest handicap signalling basically requires that a slightly higher-quality signaller must have higher fitness effect of advertising. It does not require that receivers maximize their fitness, only that they return benefits to signallers as a result of the size of the signal. Exaggerated signals resulting from an exaggeration of receiver preferences by sensory bias or indirect selection may confirm the handicap principle.

Courtship of animals, Mating behavior

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