scholarly journals MATE CHOICE AND SEXUAL CONFLICT IN THE SIZE DIMORPHIC WATER SPIDER ARGYRONETA AQUATICA (ARANEAE, ARGYRONETIDAE)

2005 ◽  
Vol 33 (3) ◽  
pp. 767-775 ◽  
Author(s):  
Dolores Schütz ◽  
Michael Taborsky
Keyword(s):  
Mate Choice ◽  
Sexual Conflict

scholarly journals Sexual selection after gamete release in broadcast spawning invertebrates

2020 ◽  
Vol 375 (1813) ◽  
pp. 20200069 ◽  
Author(s):  
Jonathan P. Evans ◽  
Rowan A. Lymbery
Keyword(s):  
Sexual Selection ◽  
Mate Choice ◽  
Sperm Competition ◽  
Sexual Conflict ◽  
Gamete Release ◽  
Theme Issue ◽  
Animal Kingdom ◽  
External Fertilization ◽  
Broadcast Spawning ◽  
Males And Females

Broadcast spawning invertebrates offer highly tractable models for evaluating sperm competition, gamete-level mate choice and sexual conflict. By displaying the ancestral mating strategy of external fertilization, where sexual selection is constrained to act after gamete release, broadcast spawners also offer potential evolutionary insights into the cascade of events that led to sexual reproduction in more ‘derived’ groups (including humans). Moreover, the dynamic reproductive conditions faced by these animals mean that the strength and direction of sexual selection on both males and females can vary considerably. These attributes make broadcast spawning invertebrate systems uniquely suited to testing, extending, and sometimes challenging classic and contemporary ideas in sperm competition, many of which were first captured in Parker's seminal papers on the topic. Here, we provide a synthesis outlining progress in these fields, and highlight the burgeoning potential for broadcast spawners to provide both evolutionary and mechanistic understanding into gamete-level sexual selection more broadly across the animal kingdom. This article is part of the theme issue ‘Fifty years of sperm competition’.

Sexual conflict in Sepsis cynipsea: female reluctance, fertility and mate choice

2003 ◽  
Vol 16 (3) ◽  
pp. 485-490 ◽  
Author(s):  
D. J. Hosken ◽  
O. Y. Martin ◽  
J. Born ◽  
F. Huber
Keyword(s):  
Mate Choice ◽  
Sexual Conflict

scholarly journals Endless forms of sexual selection

2019 ◽  
Author(s):  
Willow R Lindsay ◽  
Staffan Andersson ◽  
Badreddine Bererhi ◽  
Jacob Höglund ◽  
Arild Johnsen ◽  
...  
Keyword(s):  
Sexual Selection ◽  
Natural Selection ◽  
Mate Choice ◽  
Sexual Conflict ◽  
Genetic Architecture ◽  
Mating Systems ◽  
Population Divergence ◽  
Trait Evolution ◽  
Mating Competition ◽  
Mhc Genes

The field of sexual selection has burgeoned with research into trait evolution in the context of ecology, sociality, phylogeny, natural selection, and sexual conflict. This paper is the product of a “stock-taking” workshop; our aim is to stimulate discussion, not to provide an exhaustive review. We identify outstanding questions organized into four thematic sections. 1) Evolution of mate choice and mating systems. Variation in mate quality can generate mating competition and choice in either sex with implications for the evolution of mating systems. Limitations on mate choice may dictate the importance of direct vs. indirect benefits in mating decisions and consequently, mating systems. Specifically, polyandry evolves in response to the strength of pre- vs. post-copulatory selection. The evolution of polyandry may be related to diversity of pathogens and Major Histocompatibility Complex (MHC) genes. MHC genes are also potential cues of kinship in avoidance of inbreeding. The balance between inbreeding avoidance and inclusive fitness in mating decisions deserves greater attention. 2) Sender and receiver mechanisms shaping signal design. Mediation of honest signal content likely depends on integration of temporally variable social and physiological costs that are a challenge to measure. The neuroethology of sensory and cognitive receiver biases is the main key to signal form and the ‘aesthetic sense’ proposed by Darwin. Since a receiver bias is sufficient to both start and drive ornament or armament exaggeration, without a genetically correlated or even coevolving receiver, this may be the appropriate ‘null model’ of sexual selection. 3) Genetic architecture of sexual selection. Despite advances in modern molecular techniques, the number and identity of genes underlying performance remain largely unknown. A combination of genomic techniques and long-term field studies that reveal ecological correlates of reproductive success is warranted. In-depth investigations into the genetic basis of sexual dimorphism will reveal constraints and trajectories of sexually selected trait evolution. 4) Sexual selection and conflict as drivers of speciation. Population divergence and speciation is often driven by an interplay between sexual and natural selection. To what extent sexual selection promotes or counteracts population divergence may differ depending on the genetic architecture of traits as well as covariance between mating competition and local adaptation, if traits have multiple functions and if sensory systems used in mate choice are locally adapted. Also, post-copulatory processes, e.g. selection against heterospecific sperm, may influence the importance of sexual selection. Sexual conflict can shape speciation processes, since mate choice selection on females can restrict gene flow whereas selection on males is permissive. We propose that efforts to resolve these four themes can catalyze conceptual progress in the field of sexual selection.

scholarly journals The evolution of female mate choice by sexual conflict

2001 ◽  
Vol 268 (1466) ◽  
pp. 531-539 ◽  
Author(s):  
Sergey Gavrilets ◽  
Göran Arnqvist ◽  
Urban Friberg
Keyword(s):  
Mate Choice ◽  
Sexual Conflict ◽  
Female Mate Choice ◽  
Female Mate

scholarly journals Sexual conflict over mating in Gnatocerus cornutus ? Females prefer lovers not fighters

2014 ◽  
Vol 281 (1785) ◽  
pp. 20140281 ◽  
Author(s):  
Kensuke Okada ◽  
Masako Katsuki ◽  
Manmohan D. Sharma ◽  
Clarissa M. House ◽  
David J. Hosken
Keyword(s):  
Mate Choice ◽  
Sexual Conflict ◽  
Female Choice ◽  
Indirect Costs ◽  
Female Mate Choice ◽  
Male Competition ◽  
Female Fitness ◽  
Female Mate ◽  
Open Questions ◽  
Horned Beetle

Female mate choice and male–male competition are the typical mechanisms of sexual selection. However, these two mechanisms do not always favour the same males. Furthermore, it has recently become clear that female choice can sometimes benefit males that reduce female fitness. So whether male–male competition and female choice favour the same or different males, and whether or not females benefit from mate choice, remain open questions. In the horned beetle, Gnatocerus cornutus, males have enlarged mandibles used to fight rivals, and larger mandibles provide a mating advantage when there is direct male–male competition for mates. However, it is not clear whether females prefer these highly competitive males. Here, we show that female choice targets male courtship rather than mandible size, and these two characters are not phenotypically or genetically correlated. Mating with attractive, highly courting males provided indirect benefits to females but only via the heritability of male attractiveness. However, mating with attractive males avoids the indirect costs to daughters that are generated by mating with competitive males. Our results suggest that male–male competition may constrain female mate choice, possibly reducing female fitness and generating sexual conflict over mating.

Sexual Selection and Sexual Conflict in Crustaceans

2020 ◽  
pp. 305-331
Author(s):  
Rickey Cothran
Keyword(s):  
Sexual Selection ◽  
Mate Choice ◽  
Sexual Conflict ◽  
Sensory System ◽  
Mate Guarding ◽  
Female Mate Choice ◽  
Female Mate ◽  
Fitness Consequences ◽  
Sensory Structures ◽  
Context Shapes

Research using crustaceans has improved the understanding of sexual selection and sexual conflict. This is particularly true for understanding the biology of male weaponry and sexual conflict over mate guarding. Male crustaceans often are equipped with exaggerated claws that they use to monopolize access to females or resources that females use for reproduction. However, these weapons are often used in other contexts, e.g. mate choice and coercion of females, and understanding their evolution requires a broader perspective of how these traits are built and the fitness consequences of their use for both the bearer and interacting individuals. Although less well studied than male weaponry, crustaceans also provide excellent examples of elaborate sensory structures that are used in scramble competition among males for females. In addition to studies on male-male competition, crustaceans have been well represented in research on intrasexual selection (for the most part, female mate choice). Crustacean females use a variety of sensory channels to assess mates, and a challenge is to better understand what is being conveyed by signaling males and the fitness consequences of mate choice for females. In some cases the female’s sensory system appears to be exploited by males, and this could lead to sexual conflict over mating. Research on crustaceans has also informed the understanding of sexual conflict over mate guarding, including the evolution of traits used to resolve conflict and how the ecological context shapes the costs and benefits of guarding for both sexes.

scholarly journals Sexual conflict and the evolution of female mate choice and male social dominance

2001 ◽  
Vol 268 (1466) ◽  
pp. 517-523 ◽  
Author(s):  
Allen J. Moore ◽  
Patricia Adair Gowaty ◽  
William G. Wallin ◽  
Patricia J. Moore
Keyword(s):  
Mate Choice ◽  
Sexual Conflict ◽  
Social Dominance ◽  
Female Mate Choice ◽  
Female Mate
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