Female call preferences in tree-hole frogs: Why are there so many unattractive males?

Article Abstract:

An investigation of both the variation in male call frequency and the females' preferences for call frequency is conducted to infer the consequences for attracting mates of males calling with frequencies different from those of their neighbors. The observations suggest that a high-frequency call is most likely to attract females due to the resonance effect, whereas females prefer low-frequency calls.

Hyla, Tree frogs, Animal sounds

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Fighting for harems: assessment strategies during male-male contests in the sexually dimorphic Wellington tree weta

Article Abstract:

Using models based on game theory and optimality, the strategies of competitions between males of Wellington tree weta (Hemideina crassidens) to obtain females for mating, are examined.

Canada, Sexual behavior, Usage, Game theory, Mathematical optimization, Optimization theory, Dimorphism (Biology), Orthoptera, Orthopterans

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Time budgets and sex differences in the Eurasian beaver

Article Abstract:

With the use of radiotracking, six mated pairs were studied for time budgets. With allowance for travel time for males, there was no difference in time budget for males and females.

Animal locomotion, Beavers

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