Search Theory and Mate Choice. II. Mutual Interaction, Assortative Mating, and Equilibrium Variation in Male and Female Fitness

1991 ◽  
Vol 138 (4) ◽  
pp. 901-917 ◽  
Author(s):  
Leslie A. Real
Keyword(s):  
Mate Choice ◽  
Assortative Mating ◽  
Search Theory ◽  
Mutual Interaction ◽  
Female Fitness ◽  
Male And Female

Size-assortative mating in explosive breeders: a case study of adaptive male mate choice in anurans

Behaviour ◽  
2021 ◽  
pp. 1-20
Author(s):  
Lindsey Swierk ◽  
Tracy Langkilde
Keyword(s):  
Mate Choice ◽  
Assortative Mating ◽  
Rana Sylvatica ◽  
Large Male ◽  
Size Mismatch ◽  
Male Preference ◽  
Male And Female ◽  
Mating Patterns ◽  
Male Mate

Abstract Exploration of size-assortative mating (SAM) in animals has led to a near consensus that it arises through constraints in choice, such as preference for large females combined with a large male advantage during intrasexual competition. Although such ‘apparent’ SAM is well explored, whether SAM arises because of specific preferences for size-matched mates has been less thoroughly considered. We tested for ‘preference-based’ SAM in an explosively breeding frog (Rana sylvatica), quantifying how male and female sizes affected fertilization and if males preferred size-matched females. We found that size mismatch severely reduced fertilization. Furthermore, males preferred size-matched, not larger, females in mate choice trials. Because males that mated with much larger females fertilized fewer eggs overall than they would have with size-matched females, male preference for size-matched females may be adaptive. Our results expand understanding of the mechanisms underlying SAM, suggesting that multiple mechanisms may simultaneously cause size-assortative mating patterns to emerge.

scholarly journals Quantifying male and female pheromone-based mate choice in Caenorhabditis nematodes using a novel microfluidic technique

PLoS ONE ◽  
2017 ◽  
Vol 12 (12) ◽  
pp. e0189679 ◽  
Author(s):  
Flora Borne ◽  
Katja R. Kasimatis ◽  
Patrick C. Phillips
Keyword(s):  
Mate Choice ◽  
Male And Female ◽  
Female Pheromone ◽  
Microfluidic Technique

scholarly journals Heightened condition dependent expression of structural colouration in the faces, but not wings, of male and female flies

2021 ◽  
Author(s):  
Thomas E White ◽  
Amy Locke ◽  
Tanya Latty
Keyword(s):  
Mate Choice ◽  
Condition Dependence ◽  
Sexually Dimorphic ◽  
Male And Female ◽  
Honest Signals ◽  
Mutual Mate Choice ◽  
Close Range ◽  
Males And Females ◽  
Structural Colouration

Abstract Structurally coloured sexual signals are a conspicuous and widespread class of ornament used in mate choice, though the extent to which they encode information on the quality of their bearers is not fully resolved. Theory predicts that signalling traits under strong sexual selection as honest indicators should evolve to be more developmentally integrated and exaggerated than nonsexual traits, thereby leading to heightened condition dependence. Here we test this prediction through examination of the sexually dimorphic faces and wings of the cursorial fly Lispe cana. Males and females possess structural UV-white and golden faces, respectively, and males present their faces and wings to females during close-range, ground-based courtship displays, thereby creating the opportunity for mutual inspection. Across a field-collected sample of individuals, we found that the appearance of the faces of both sexes scaled positively with individual condition, though along separate axes. Males in better condition expressed brighter faces as modelled according to conspecific flies, whereas condition scaled with facial saturation in females. We found no such relationships for their wing interference pattern nor abdomens, with the latter included as a nonsexual control. Our results suggest that the structurally coloured faces, but not the iridescent wings, of male and female Lispe cana are reliable guides to individual quality and support the broader potential for structural colours as honest signals. They also highlight the potential for mutual mate choice in this system, while arguing for one of several alternate signalling roles for wing interferences patterns among the myriad taxa which bear them.

4. Sex roles and stereotypes

2018 ◽  
pp. 52-68
Author(s):  
Leigh W. Simmons
Keyword(s):  
Sexual Selection ◽  
Mate Choice ◽  
Sexual Behaviour ◽  
Sex Roles ◽  
Animal Species ◽  
Male And Female ◽  
Mating Competition ◽  
Characteristic Behaviour ◽  
Males And Females ◽  
Female Roles

‘Sex roles and stereotypes’ examines the notion, implicit in many of the original ideas about sexual selection, that males and females have natural ‘roles’ with characteristic behaviour associated with each sex. It also explores further the reasons behind deviations from the ‘typical’ sex roles in mate choice and in mating competition. Are there ‘standard’ male and female roles in both humans and other animal species? One version of sex roles holds that males are generally dominant and females submissive, stemming from the way that sexual selection favours different behaviours in each sex. This could mean that sexual selection dictates particular behaviours in males and females. But in fact, sexual behaviour is extraordinarily varied in nature.

Reproductive biology and relative male and female fitness in a trioecious cactus, P achycereus pringlei (Cactaceae)

1994 ◽  
Vol 81 (7) ◽  
pp. 858-867 ◽  
Author(s):  
Theodore H. Fleming ◽  
Sandrine Maurice ◽  
Stephen L. Buchmann ◽  
Merlin D. Tuttle
Keyword(s):  
Reproductive Biology ◽  
Female Fitness ◽  
Male And Female

scholarly journals Coevolution of male and female mate choice can destabilize reproductive isolation

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Thomas G. Aubier ◽  
Hanna Kokko ◽  
Mathieu Joron
Keyword(s):  
Mate Choice ◽  
Reproductive Isolation ◽  
Female Mate Choice ◽  
Male Mate Choice ◽  
Premating Isolation ◽  
Male And Female ◽  
Female Mate ◽  
Female Preferences ◽  
Mutual Mate Choice ◽  
Male Mate

Abstract Sexual interactions play an important role in the evolution of reproductive isolation, with important consequences for speciation. Theoretical studies have focused on the evolution of mate preferences in each sex separately. However, mounting empirical evidence suggests that premating isolation often involves mutual mate choice. Here, using a population genetic model, we investigate how female and male mate choice coevolve under a phenotype matching rule and how this affects reproductive isolation. We show that the evolution of female preferences increases the mating success of males with reciprocal preferences, favouring mutual mate choice. However, the evolution of male preferences weakens indirect selection on female preferences and, with weak genetic drift, the coevolution of female and male mate choice leads to periodic episodes of random mating with increased hybridization (deterministic ‘preference cycling’ triggered by stochasticity). Thus, counterintuitively, the process of establishing premating isolation proves rather fragile if both male and female mate choice contribute to assortative mating.

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