scholarly journals The social and genetic mating system in flickers linked to partially reversed sex roles

2008 ◽  
Vol 20 (2) ◽  
pp. 453-458 ◽  
Author(s):  
Karen L. Wiebe ◽  
Bart Kempenaers
Keyword(s):  
Mating System ◽  
Sex Roles ◽  
The Social ◽  
Genetic Mating System

Breaking the rules: sex roles and genetic mating system of the pheasant coucal

Oecologia ◽  
2011 ◽  
Vol 167 (2) ◽  
pp. 413-425 ◽  
Author(s):  
G. Maurer ◽  
M. C. Double ◽  
O. Milenkaya ◽  
M. Süsser ◽  
R. D. Magrath
Keyword(s):  
Mating System ◽  
Sex Roles ◽  
Genetic Mating System

Social and genetic mating system of Ridgway's hawk (Buteo ridgwayi), an endemic raptor on Hispaniola

2013 ◽  
Vol 29 (6) ◽  
pp. 531-540 ◽  
Author(s):  
Lance G. Woolaver ◽  
Rina K. Nichols ◽  
Eugene S. Morton ◽  
Bridget J. M. Stutchbury
Keyword(s):  
Mating System ◽  
Social Organization ◽  
Mating Systems ◽  
Genetic Relatedness ◽  
Ecological Factors ◽  
Island Endemic ◽  
Monogamous Species ◽  
The Social ◽  
Socially Monogamous ◽  
Genetic Mating System

Abstract:Patterns of social organization and mating systems have been shown to be functions of ecological factors such as resource allocation and breeding density. In some species, particularly birds, social organization and genetic mating systems differ with molecular studies providing evidence of extra-pair young frequently occurring within broods of socially monogamous species. Here we examine the social and genetic mating system of an ecologically little-known forest raptor endemic to the island of Hispaniola in the Caribbean. From 2005–2009, our field observations of over 60 breeding pairs verified a social mating system of monogamy for the species. During the same time period, we collected blood samples (n= 146 birds, 48 nests) and used microsatellite profiles from 10 loci to estimate genetic relatedness among nestlings in a brood and assign putative fathers. We found no evidence of extra-pair paternity in 41 broods. We had one instance where a social male was not assigned as the putative father, however, the confidence level of this assignment was not significant since the genotypes of the social and assigned males were very similar. Our results support our hypothesis that genetic monogamy would be exhibited by Ridgway's hawk, an island-endemic tropical raptor.

scholarly journals Mate Choice, Sex Roles and Sexual Cognition in Vertebrates: Mate Choice Turns Cognition or Cognition Turns Mate Choice?

2021 ◽  
Vol 9 ◽  
Author(s):  
Theodora Fuss
Keyword(s):  
Sexual Selection ◽  
Mate Choice ◽  
Mating System ◽  
Cognitive Abilities ◽  
Cognitive Skills ◽  
Sex Roles ◽  
Environmental Changes ◽  
Antipredator Behavior ◽  
Energy Levels ◽  
Problem Solver

The idea of “smart is sexy,” meaning superior cognition provides competitive benefits in mate choice and, therefore, evolutionary advantages in terms of reproductive fitness, is both exciting and captivating. Cognitively flexible individuals perceive and adapt more dynamically to (unpredictable) environmental changes. The sex roles that females and males adopt within their populations can vary greatly in response to the prevalent mating system. Based on how cognition determines these grossly divergent sex roles, different selection pressures could possibly shape the (progressive) evolution of cognitive abilities, suggesting the potential to induce sexual dimorphisms in superior cognitive abilities. Associations between an individual’s mating success, sexual traits and its cognitive abilities have been found consistently across vertebrate species and taxa, providing evidence that sexual selection may well shape the supporting cognitive prerequisites. Yet, while superior cognitive abilities provide benefits such as higher feeding success, improved antipredator behavior, or more favorable mate choice, they also claim costs such as higher energy levels and metabolic rates, which in turn may reduce fecundity, growth, or immune response. There is compelling evidence in a variety of vertebrate taxa that females appear to prefer skilled problem-solver males, i.e., they prefer those that appear to have better cognitive abilities. Consequently, cognition is also likely to have substantial effects on sexual selection processes. How the choosing sex assesses the cognitive abilities of potential mates has not been explored conclusively yet. Do cognitive skills guide an individual’s mate choice and does learning change an individual’s mate choice decisions? How and to which extent do individuals use their own cognitive skills to assess those of their conspecifics when choosing a mate? How does an individual’s role within a mating system influence the choice of the choosing sex in this context? Drawing on several examples from the vertebrate world, this review aims to elucidate various aspects associated with cognitive sex differences, the different roles of males and females in social and sexual interactions, and the potential influence of cognition on mate choice decisions. Finally, future perspectives aim to identify ways to answer the central question of how the triad of sex, cognition, and mate choice interacts.

Monogamy with exceptions: Social and genetic mating system in a bird species with high paternal investment

Behaviour ◽  
2005 ◽  
Vol 142 (8) ◽  
pp. 1093-1114 ◽  
Author(s):  
Peter Pechacek ◽  
Klaus G. Michalek ◽  
Hans Winkler ◽  
Donald Blomqvist
Keyword(s):  
Mating System ◽  
Bird Species ◽  
Paternal Investment ◽  
Genetic Mating System

Testing the resource economic monopolization hypothesis and its consequences for the mating system ofAlpheus estuariensis(Decapoda, Caridea, Alpheidae)

2018 ◽  
Vol 99 (3) ◽  
pp. 639-647
Author(s):  
Danillo Barroso ◽  
Douglas Fernandes Rodrigues Alves ◽  
Gustavo L. Hirose
Keyword(s):  
Mating System ◽  
Environmental Conditions ◽  
Social Behaviour ◽  
Random Distribution ◽  
Great Abundance ◽  
North East ◽  
The Social ◽  
Average Abundance ◽  
Males And Females

The aim of the present study is to test the resource economic monopolization hypothesis and the hypothesis of monogamy using the shrimpAlpheus estuariensisas a model. The shrimps were collected in two areas in the Vaza-Barriz estuary, north-east Brazil, from August to November 2016. The average abundance of refuges was obtained through 30 random replicates. The shrimp presented a random distribution in both areas. Males and females found together showed a weak relation between their sizes, with males being larger than females. In addition, the cheliped of males grows proportionally more than that of females. The great abundance of refuges present in the environment, added to the aforementioned results, do not support the idea of refuge-guarding behaviour or monogamy. These results, which are in disagreement with those already found for some shrimps of the same family, genus, and even species, reinforce the idea that Alpheidae can be used as a model in the study of how environmental conditions are capable of shaping the social behaviour of a species.

Feminist Challenges to the Social Structure and Sex Roles

1979 ◽  
Vol 4 (1) ◽  
pp. 16-31 ◽  
Author(s):  
Helen R. Kearney
Keyword(s):  
Social Structure ◽  
Sex Roles ◽  
Historical Context ◽  
Social Structures ◽  
Social Psychological ◽  
Feminine Identity ◽  
Voluntary Childlessness ◽  
The Social ◽  
The Family ◽  
Complex Relationships

A social-psychological and historical context for understanding contemporary sex roles, fertility, parenting, and the family is provided by reviewing origins and objectives of the Women's Movement. Feminist efforts to change social structures affecting women's choice of roles and fertility require continued attention. Increased voluntary childlessness seriously challenges the concept of motherhood as central to adult feminine identity and legitimization of choice in whether or not to become a parent provides a new context for studying women, sex roles, fertility, and their complex relationships to the social structure. Continued challenges to premises, methodologies, and conclusions of such research are urged.

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