Reproductive Skew
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Benefícios, custos e conflitos no Anu-branco (Guira guira: Cuculidae): uma espécie de reprodução comunitária
O anu branco (Guira guira) é uma espécie de reprodução comunitária, onde duas ou mais fêmeas utilizam o mesmo ninho para reprodução. Como os membros do grupo não são necessariamente aparentados, ocorrem, então, disputas de ordem alimentar e sexual entre os membros do grupo. Por exemplo, infanticídio em espécies comunitárias pode indicar tentati
Publicado em: 2006
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2. Reproductive skew in the polygynandrous acorn woodpecker
Reproductive skew models, which focus on the degree to which reproduction is shared equally (low skew) or monopolized by a single individual (high skew) within groups, have been heralded as providing a general unifying framework for understanding the factors determining social evolution. Here, we test the ability of optimal skew, or “transactional,” mode
The National Academy of Sciences.
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3. It takes two to tango: reproductive skew and social correlates of male mating success in a lek-breeding bird
Variance in reproductive success among individuals is a defining characteristic of many social vertebrates. Yet, our understanding of which male attributes contribute to reproductive success is still fragmentary in most cases. Male–male reproductive coalitions, where males jointly display to attract females, are of particular interest to evolutionary biolo
The Royal Society.
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4. Reproductive suppression in female Damaraland mole-rats Cryptomys damarensis: dominant control or self-restraint?
Colonies of Damaraland mole-rats Cryptomys damarensis exhibit a high reproductive skew. Typically one female breeds and the others are anovulatory. Two models, the dominant control model (DCM) and the self-restraint model (SRM), have been proposed to account for this reproductive suppression. The DCM proposes that suppression is under the control of the domi
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5. An evolutionary theory of the family.
An evolutionary framework for viewing the formation, the stability, the organizational structure, and the social dynamics of biological families is developed. This framework is based upon three conceptual pillars: ecological constraints theory, inclusive fitness theory, and reproductive skew theory. I offer a set of 15 predictions pertaining to living within
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6. Morphological castes in a vertebrate
Morphological specialization for a specific role has, until now, been assumed to be restricted to social invertebrates. Herein we show that complete physical dimorphism has evolved between reproductives and helpers in the eusocial naked mole-rat. Dimorphism is a consequence of the lumbar vertebrae lengthening after the onset of reproduction in females.
The National Academy of Sciences.
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7. When can ants discriminate the sex of brood? A new aspect of queen-worker conflict.
The stage in preimaginal ontogeny at which the sexes can first be distinguished has important implications for queen-worker conflict in social insects. If workers are unable to sex larvae at an early instar, their opportunity to control colony reproductive strategies may be limited. In addition, by concealing the sex of her sons for some portion of developme