Cooperative breeding and monogamy in mammalian societies
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Cooperative breeding and monogamy in mammalian societies.
Comparative studies of social insects and birds show that the evolution of cooperative and eusocial breeding systems has been confined to species where females mate completely or almost exclusively with a single male, indicating that high levels of average kinship between group members are necessary for the evolution of reproductive altruism. In this paper, we show that in mammals, the evolutio...
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18 Inclusive-fitness theory highlights monogamy as a key driver of altruistic sib-rearing. Accordingly, 19 monogamy should promote the evolution of worker sterility in social insects when sterile workers 20 make for better helpers. However, a recent population-genetics analysis (Olejarz et al. 2015) found 21 no clear effect of monogamy on worker sterility. Here, we revisit this analysis. First,...
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The primary objective of this research is to examine the contributions of co-operatives on rural household agricultural productivity. Multistage sampling was employed in the random selection of 120 co-operators and non-cooperators respectively. But only 115 co-operators and non-cooperators were utilized for the study. The active mean age of 42 years and married female rural households with seco...
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Traditional interpretations of the evolution of animal societies have suggested that their structure is a consequence of attempts by individuals to maximize their inclusive fitness within constraints imposed by their social and physical environments. In contrast, some recent re-interpretations have argued that many aspects of social organization should be interpreted as group-level adaptations ...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society B: Biological Sciences
سال: 2012
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.2011.2468