scholarly journals Extrapair mating between relatives in the barn swallow: a role for kin selection?

2005 ◽  
Vol 1 (4) ◽  
pp. 389-392 ◽  
Author(s):  
Oddmund Kleven ◽  
Frode Jacobsen ◽  
Raleigh J Robertson ◽  
Jan T Lifjeld
Keyword(s):  
Kin Selection ◽  
Barn Swallow ◽  
Random Choice ◽  
Extrapair Mating ◽  
Female Promiscuity ◽  
Social Partners ◽  
Socially Monogamous ◽  
Insurance Mechanism ◽  
Genetic Parents ◽  
New Hypothesis

Why do females of many species mate with more than one male? One of the main hypotheses suggests that female promiscuity is an insurance mechanism against the potential detrimental effects of inbreeding. Accordingly, females should preferably mate with less related males in multiple or extrapair mating. Here we analyse paternity, relatedness among mating partners, and relatedness between parents and offspring, in the socially monogamous North American barn swallow ( Hirundo rustica erythrogaster ). In contrast to the inbreeding avoidance hypothesis, we found that extrapair mating partners were more related than expected by random choice, and tended to be more related than social partners. Furthermore, extrapair mating resulted in genetic parents being more related to their extrapair young than to their withinpair young. We propose a new hypothesis for extrapair mating based on kin selection theory as a possible explanation to these findings.

PATERNAL GENETIC EFFECTS ON OFFSPRING FITNESS ARE CONTEXT DEPENDENT WITHIN THE EXTRAPAIR MATING SYSTEM OF A SOCIALLY MONOGAMOUS PASSERINE

Evolution ◽  
2005 ◽  
Vol 59 (3) ◽  
pp. 645 ◽  
Author(s):  
Tim Schmoll ◽  
Verena Dietrich ◽  
Wolfgang Winkel ◽  
Jörg T. Epplen ◽  
Frank Schurr ◽  
...  
Keyword(s):  
Mating System ◽  
Genetic Effects ◽  
Offspring Fitness ◽  
Extrapair Mating ◽  
Socially Monogamous ◽  
Context Dependent

scholarly journals Why inclusive fitness can make it adaptive to produce less fit extra-pair offspring

2015 ◽  
Vol 282 (1801) ◽  
pp. 20142716 ◽  
Author(s):  
Jussi Lehtonen ◽  
Hanna Kokko
Keyword(s):  
Inclusive Fitness ◽  
Empirical Work ◽  
Reproductive Season ◽  
Breeding Systems ◽  
Social Partner ◽  
Social Monogamy ◽  
Monogamous Species ◽  
Social Partners ◽  
Socially Monogamous ◽  
Fitness Benefits

Social monogamy predominates in avian breeding systems, but most socially monogamous species engage in promiscuous extra-pair copulations (EPCs). The reasons behind this remain debated, and recent empirical work has uncovered patterns that do not seem to fit existing hypotheses. In particular, some results seem to contradict the inbreeding avoidance hypothesis: females can prefer extra-pair partners that are more closely related to them than their social partners, and extra-pair young can have lower fitness than within-pair young. Motivated by these studies, we show that such results can become explicable when an asymmetry in inbreeding tolerance between monogamy and polygamy is extended to species that combine both strategies within a single reproductive season. Under fairly general conditions, it can be adaptive for a female to choose an unrelated social partner, but inbreed with an extra-pair partner. Inbreeding depression is compensated for by inclusive fitness benefits, which are only fully realized in EPCs. We also show that if a female has already formed a suboptimal social bond, there are scenarios where it is beneficial to engage in EPCs with less related males, and others where EPCs with more related males increase her inclusive fitness. This has implications for detecting general relatedness or fitness trends when averaged over several species.

scholarly journals The role of genetic constraints and social environment in explaining female extra-pair mating

2019 ◽  
Author(s):  
Daiping Wang ◽  
Wolfgang Forstmeier ◽  
Katrin Martin ◽  
Alastair Wilson ◽  
Bart Kempenaers
Keyword(s):  
Statistical Power ◽  
Genetic Correlations ◽  
Social Environments ◽  
Genetic Constraints ◽  
Female Promiscuity ◽  
Monogamous Species ◽  
Socially Monogamous ◽  
Pair Mating ◽  
Extra Pair Mating

AbstractWhy females of socially monogamous species copulate with males other than their partner has been a long-standing, unresolved puzzle. We previously reported that female promiscuity appears to be a genetic corollary of male promiscuity (intersexual pleiotropy hypothesis). Here we put this earlier finding to a critical test using the same population of zebra finches Taeniopygia guttata. After three generations of artificial selection on male courtship rate, a correlate of extra-pair mating, we assess whether female promiscuity changed by indirect selection and we re-examine the crucial genetic correlations. Our new analyses with substantially increased statistical power clearly reject the hypothesis that male and female promiscuity are genetically homologous traits. Our study highlights that individual females show low repeatability in extra-pair mating behavior across different social environments. This emphasizes the potential importance of pair bond strength and the availability of favored extra-pair males as factors explaining variation in patterns of female promiscuity.

scholarly journals The evolution of sexual imprinting in socially monogamous populations

2015 ◽  
Vol 61 (6) ◽  
pp. 1043-1061 ◽  
Author(s):  
Edith Invernizzi ◽  
R. Tucker Gilman
Keyword(s):  
Mate Choice ◽  
Mating Systems ◽  
Adaptive Dynamics ◽  
Theoretical Work ◽  
Common Mechanism ◽  
Sexual Imprinting ◽  
Systems Model ◽  
Social Partners ◽  
Socially Monogamous ◽  
Pair Mating

Abstract Sexual imprinting is a common mechanism of mate preference learning. It is thought to influence how traits evolve and in some cases to promote speciation. Recently there has been increasing interest in how sexual imprinting itself evolves. Theoretical work on polygynous mating systems predicts that females will evolve paternal imprinting, which means they learn to prefer phenotypes expressed by their fathers. In nature however, females of some species learn to prefer phenotypes expressed by their mothers instead. We used a dynamical systems model and tools from adaptive dynamics to study how sexual imprinting evolves in species with socially monogamous mating systems. We considered cases in which the target trait for imprinting is under viability selection but is not a reliable signal of paternal investment. Thus, the target trait signals the genetic benefits rather than the parental care benefits of mate choice. When mating is socially monogamous and there is some extra-pair paternity, we show that maternal imprinting can be favored over paternal imprinting. Counterintuitively, females often become choosier when selecting social partners in systems where extra-pair mating is more frequent. That is, females may be more selective when choosing social partners that will sire a smaller percentage of their offspring. Our results offer new testable hypotheses, and advance our understanding of the mechanisms that drive the evolution of mate choice strategies in nature.

Evidence of obligate female promiscuity in a socially monogamous passerine

2006 ◽  
Vol 60 (2) ◽  
pp. 255-259 ◽  
Author(s):  
Frode Fossøy ◽  
Arild Johnsen ◽  
Jan T. Lifjeld
Keyword(s):  
Female Promiscuity ◽  
Socially Monogamous

Social selection is a powerful explanation for prosociality

2016 ◽  
Vol 39 ◽  
Author(s):  
Randolph M. Nesse
Keyword(s):  
Sexual Selection ◽  
Kin Selection ◽  
Group Selection ◽  
Social Selection ◽  
Cultural Group ◽  
Cultural Group Selection ◽  
Social Partners ◽  
Selection For ◽  
Powerful Explanation

AbstractCultural group selection helps explain human cooperation, but social selection offers a complementary, more powerful explanation. Just as sexual selection shapes extreme traits that increase matings, social selection shapes extreme traits that make individuals preferred social partners. Self-interested partner choices create strong and possibly runaway selection for prosocial traits, without requiring group selection, kin selection, or reciprocity.

PATERNAL GENETIC EFFECTS ON OFFSPRING FITNESS ARE CONTEXT DEPENDENT: WITHIN THE EXTRAPAIR MATING SYSTEM OF A SOCIALLY: MONOGAMOUS PASSERINE

Evolution ◽  
2005 ◽  
Vol 59 (3) ◽  
pp. 645-657 ◽  
Author(s):  
Tim Schmoll ◽  
Verena Dietrich ◽  
Wolfgang Winkel ◽  
Jörg T. Epplen ◽  
Frank Schurr ◽  
...  
Keyword(s):  
Mating System ◽  
Genetic Effects ◽  
Offspring Fitness ◽  
Extrapair Mating ◽  
Socially Monogamous ◽  
Context Dependent
Sign in / Sign up

Export Citation Format

Share Document