scholarly journals SELECTION FOR ALTERNATIVE MALE REPRODUCTIVE TACTICS ALTERS INTRALOCUS SEXUAL CONFLICT

Evolution ◽  
2014 ◽  
Vol 68 (7) ◽  
pp. 2137-2144 ◽  
Author(s):  
Agata Plesnar Bielak ◽  
Anna M. Skrzynecka ◽  
Krzysztof Miler ◽  
Jacek Radwan
Keyword(s):  
Sexual Conflict ◽  
Reproductive Tactics ◽  
Intralocus Sexual Conflict ◽  
Male Reproductive Tactics ◽  
Selection For

scholarly journals Intralocus sexual conflict can maintain alternative reproductive tactics

2021 ◽  
Author(s):  
Madilyn Marisa Gamble ◽  
Ryan G Calsbeek
Keyword(s):  
Sexual Conflict ◽  
Genetic Correlations ◽  
Alternative Reproductive Tactics ◽  
Specific Gene ◽  
Reproductive Tactics ◽  
Frequency Dependent ◽  
Frequency Dependent Selection ◽  
Intralocus Sexual Conflict ◽  
Maintenance Of Sex ◽  
Negative Frequency Dependent Selection

Alternative reproductive tactics (ARTs) are ubiquitous throughout the animal kingdom and widely regarded as an outcome of high variance in reproductive success. Proximate mechanisms underlying ARTs include genetically based polymorphisms, environmentally induced polymorphisms, and those mediated by a combination of genetic and environmental factors. However, few ultimate mechanisms have been proposed to explain the maintenance of ARTs over time, the most important of which have been disruptive and negative frequency-dependent selection. Here we explore the role that intralocus sexual conflict may play in the maintenance of sex-specific ARTs. We use a genetically explicit individual-based model in which body size influences both female fecundity and male tactic through a shared genetic architecture. By modeling ART maintenance under varying selection regimes and levels of sex-specific gene expression, we explore the conditions under which intralocus sexual conflict can maintain a hypothetical ART defined by larger (alpha) and smaller (beta) tactics. Our models consistently revealed that sexual conflict can result in the persistence of a sex-specific polymorphism over hundreds of generations, even in the absence of negative frequency-dependent selection. ARTs were maintained through correlated selection when one male ART has lower fitness but produces daughters with higher fitness. These results highlight the importance of understanding selection on both sexes when attempting to explain the maintenance of ARTs. Our results are consistent with a growing literature documenting genetic correlations between male ARTs and female fitness, suggesting that the maintenance of sex-specific ARTs through intralocus sexual conflict may be common and widespread in nature.

Male reproductive tactics in the threespine stickleback– an evaluation by DNA fingerprinting

1992 ◽  
Vol 1 (2) ◽  
pp. 79-87 ◽  
Author(s):  
C. RICO ◽  
U. KUHNLEIN ◽  
G. J. FITZGERALD
Keyword(s):  
Dna Fingerprinting ◽  
Threespine Stickleback ◽  
Reproductive Tactics ◽  
Male Reproductive Tactics

scholarly journals INTRALOCUS SEXUAL CONFLICT OVER IMMUNE DEFENSE, GENDER LOAD, AND SEX-SPECIFIC SIGNALING IN A NATURAL LIZARD POPULATION

Evolution ◽  
2009 ◽  
Vol 63 (12) ◽  
pp. 3124-3135 ◽  
Author(s):  
Erik I. Svensson ◽  
Andrew G. McAdam ◽  
Barry Sinervo
Keyword(s):  
Sexual Conflict ◽  
Immune Defense ◽  
Intralocus Sexual Conflict

Intralocus Sexual Conflict

2017 ◽  
pp. 1-9
Author(s):  
Karl Grieshop
Keyword(s):  
Sexual Conflict ◽  
Intralocus Sexual Conflict

Intralocus Sexual Conflict Across the Genome

2021 ◽  
pp. 4198-4201
Author(s):  
Elina Immonen
Keyword(s):  
Sexual Conflict ◽  
Intralocus Sexual Conflict

Intralocus Sexual Conflict

2021 ◽  
pp. 4190-4198
Author(s):  
Karl Grieshop
Keyword(s):  
Sexual Conflict ◽  
Intralocus Sexual Conflict

scholarly journals Contrasting effects of intralocus sexual conflict on sexually antagonistic coevolution

2016 ◽  
Vol 113 (8) ◽  
pp. E978-E986 ◽  
Author(s):  
Tanya M. Pennell ◽  
Freek J. H. de Haas ◽  
Edward H. Morrow ◽  
G. Sander van Doorn
Keyword(s):  
Sexual Conflict ◽  
Genetic Model ◽  
Arms Races ◽  
Female Partners ◽  
Intralocus Sexual Conflict ◽  
Antagonistic Coevolution ◽  
Evolutionary Conflict ◽  
Quantitative Genetic Model ◽  
Female Specific ◽  
Evolutionary Consequences

Evolutionary conflict between the sexes can induce arms races in which males evolve traits that are detrimental to the fitness of their female partners, and vice versa. This interlocus sexual conflict (IRSC) has been proposed as a cause of perpetual intersexual antagonistic coevolution with wide-ranging evolutionary consequences. However, theory suggests that the scope for perpetual coevolution is limited, if traits involved in IRSC are subject to pleiotropic constraints. Here, we consider a biologically plausible form of pleiotropy that has hitherto been ignored in treatments of IRSC and arrive at drastically different conclusions. Our analysis is based on a quantitative genetic model of sexual conflict, in which genes controlling IRSC traits have side effects in the other sex, due to incompletely sex-limited gene expression. As a result, the genes are exposed to intralocus sexual conflict (IASC), a tug-of-war between opposing male- and female-specific selection pressures. We find that the interaction between the two forms of sexual conflict has contrasting effects on antagonistic coevolution: Pleiotropic constraints stabilize the dynamics of arms races if the mating traits are close to evolutionary equilibrium but can prevent populations from ever reaching such a state. Instead, the sexes are drawn into a continuous cycle of arms races, causing the buildup of IASC, alternated by phases of IASC resolution that trigger the next arms race. These results encourage an integrative perspective on the biology of sexual conflict and generally caution against relying exclusively on equilibrium stability analysis.

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