Results 251 to 260 of about 134,297 (295)

Cooperative breeding in mammals

Trends in Ecology & Evolution, 1994
Cooperative breeding in mammals covers a diversity of breeding systems. In all cases, however, Individuals assist in the rearing of offspring other than their own. Recent research has highlighted some of the factors responsible for variation both within and between species.
M D, Jennions, D W, Macdonald
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Familiarity breeds cooperation

Nature, 1998
Many theoretical models have been developed to study the conditions under which unrelated individuals should cooperate or not cooperate. But such behaviour is rarely ‘all or nothing’, and new mathematical models allow the optimal level of cooperation to be determined.
Laurent Keller, H. Kern Reeve
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Cooperative Breeding in Marmots

Oikos, 1999
Whenever individuals live in stable social groups and not all individuals breed, group members may breed cooperatively. While well-documented in a variety of birds and mammals, there is some controversy over whether, and to what degree, sciurid rodents breed cooperatively.
Daniel T. Blumstein, Kenneth B. Armitage
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Intermittent breeding is associated with breeding group turnover in a cooperatively breeding bird

Oecologia, 2020
Intermittent breeding, in which an adult skips a breeding opportunity, can represent a non-adaptive constraint or an adaptive response to the tradeoff between current and future reproduction. In group-living animals, the social group may also affect the frequency of reproduction, but this possibility has received little attention.
Maria G, Smith, Christina, Riehl
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Cooperative breeding

2005
Abstract Cooperative breeding birds live in social groups. In the group some birds, the “helpers”, help rear the young of other individuals, the breeders. Helpers may provide relief to the breeders by taking part in the care of a brood, and the helpers may increase the number of brood young that survive. This behavior is curious.
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Cooperative breeding

1999
Abstract Cooperative breeding, sometimes referred to as communal breeding, is a rare and specialized phenomenon that occurs in fewer than three per cent of the world’s approximately 9700 species of extant birds. Cooperative breeding is defined by the presence in a stable social unit of non-breeding ‘helpers’, which assist in the care of ...
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Cooperative Breeding instead of Cooperative Killing

2015
Foreword | In his outstanding target article on”The Ritual Origins of Humanity”, Matt Rossano presented empirical findings and theses from the forefront of interdisciplinary anthropological studies, ranging from biology to psychology and sociology. But I will argue that he has inherited a classical bias that is unfortunately still alive in evolutionary
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Cooperative Breeding and Adolescent Siblings

Current Anthropology, 2009
In humans, alloparents are usually thought to be grandmothers and adolescent girls. Although many studies have examined the influence of grandmothers on child outcomes, fewer have explored the effect of adolescents on such outcomes. We tested the hypothesis that in a community of Ecuadorian Shuar horticulturists, adolescent girls would have a positive ...
Edward H. Hagen, H. Clark Barrett
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