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- W2022745104 abstract "Because mating is a product of individual reproductive strategies that may vary with changing conditions, we predicted variable mating behaviour in an arid-adapted, territorial rodent, the giant kangaroo rat, Dipodomys ingens. We also predicted that familiarity would facilitate nonaggressive courtship and mating in this solitary rodent. Through direct observations in the field, we found that mating varied from exclusive to multiple partners. Where densities were low, and on nights when multiple females were in oestrus, each animal mated with one member of the opposite sex. In conditions where the operational sex ratio was skewed towards multiple males, males footdrummed and competed for females. Males were able to mate with one or two females in adjacent territories, and they successfully competed for these same females throughout the breeding season. Females that mated exclusively with one male had more pups emerge from the burrow compared with females that experienced male competition. Females allowed nearest neighbour males to enter their burrows, and they engaged in more nonaggressive contact with close neighbours than with other males. Paired encounters in the field showed less aggression towards neighbours than strangers. In laboratory tests, females were less aggressive towards and allowed more contact with familiar than unfamiliar males. These results show that D. ingens can alter mating strategies as conditions change. Familiarity is an important factor in nonaggressive interactions between males and females and may be important to mate preferences in females during reproduction. The less aggressive behaviour to neighbours than to strangers (‘dear enemy’ phenomenon) is consistent with other solitary animals that defend multipurpose territories. Copyright 2002 The Association for the Study of Animal Behaviour. Published by Elsevier Science Ltd. All rights reserved." @default.
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- W2022745104 date "2002-07-01" @default.
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- W2022745104 title "Familiarity and flexible mating strategies of a solitary rodent, Dipodomys ingens" @default.
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- W2022745104 doi "https://doi.org/10.1006/anbe.2002.3029" @default.
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