The location of eighteen genes inLebistes reticulatus

Winge, Ö.

doi:10.1007/bf03052599

Cited by 192 publications

(180 citation statements)

References 5 publications

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“…The sexual antagonism hypothesis for restricted recombination in sex chromosomes was originally proposed by Sir Ronald Fisher in 1931 [10] to explain the overrepresentation of genes for male ornamentation in close linkage to the sexdetermination locus of the guppy Poecilia reticulata [23]. In this and many other species, males and females differ in morphology and behaviour and so natural selection upon traits associated with survival and reproduction is expected to favour different optima in the two sexes.…”

Section: The Sexual Antagonism Hypothesismentioning

confidence: 99%

No amicable divorce? Challenging the notion that sexual antagonism drives sex chromosome evolution

Ironside¹

2010

BioEssays

119

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Ironside, J. E. (2010). No amicable divorce? Challenging the notion that sexual antagonism drives sex chromosome evolution. Bioessays, 32, (8), 718-726. IMPF: 04.47 RONO: 00Although sexual antagonism may have played a role in forming some sex chromosome systems, there appears to be little empirical or theoretical justification in assuming that it is the driving force in all cases of sex chromosome evolution. In many species, sex chromosomes have diverged in size and shape through the accumulation of mutations in regions of suppressed recombination. It is commonly assumed that recombination is suppressed in sex chromosomes due to selection to resolve sexually antagonistic pleiotropy. However, the requirement for a sex chromosome-specific mechanism for suppressing recombination is questionable, since more general models of recombination suppression on autosomes also appear to be applicable to sex chromosomes. Direct tests of the predictions of the sexual antagonism hypothesis offer only limited support in specific sex chromosome systems and circumstantial evidence remains open to interpretation.Peer reviewe

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Section: The Sexual Antagonism Hypothesismentioning

confidence: 99%

No amicable divorce? Challenging the notion that sexual antagonism drives sex chromosome evolution

Ironside¹

2010

BioEssays

119

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“…These patterns accord with our predictions for traits under sexual selection in males. In addition, male color patterns in Poecilia reticulata (guppies) and Poecilia parae are much more strongly heritable through the father, although this pattern has been attributed to Y-linkage (Winge 1927;Fisher 1930a;Houde 1992;Brooks 2000;Brooks and Endler 2001;Lindholm and Breden 2002;Lindholm et al 2004). Conversely, Simmons (1987) obtained similar maternal and paternal heritabilities for absolute hind/leg length, body length, body weight, and pronotum width in the field cricket Gryllus bimaculatus, and Merilä et al (1998) found similar maternal and paternal heritabilities for absolute tarsus length in collared flycatchers (Ficedula albicollis).…”

Section: Evolution Of Heritabilitymentioning

confidence: 99%

Intralocus Sexual Conflict and the Genetic Architecture of Sexually Dimorphic Traits in Prochyliza Xanthostoma (Diptera: Piophilidae)

2005

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Abstract. Because homologous traits of males and females are likely to have a common genetic basis, sex-specific selection (often resulting from sexual selection on one sex) may generate an evolutionary tug-of-war known as intralocus sexual conflict, which will constrain the adaptive divergence of the sexes. Theory suggests that intralocus sexual conflict can be mitigated through reduction of the intersexual genetic correlation (r MF ), predicting negative covariation between r MF and sexual dimorphism. In addition, recent work showed that selection should favor reduced expression of alleles inherited from the opposite-sex parent (intersexual inheritance) in traits subject to intralocus sexual conflict. For traits under sexual selection in males, this should be manifested either in reduced maternal heritability or, when conflict is severe, in reduced heritability through the opposite-sex parent in offspring of both sexes. However, because we do not know how far these hypothesized evolutionary responses can actually proceed, the importance of intralocus sexual conflict as a long-term constraint on adaptive evolution remains unclear. In this study, we investigated the genetic architecture of sexual and nonsexual morphological traits in Prochyliza xanthostoma. The lowest r MF and greatest dimorphism were exhibited by two sexual traits (head length and antenna length) and, among all traits, the degree of sexual dimorphism was correlated negatively with r MF . Moreover, sexual traits exhibited reduced maternal heritabilities, and the most strongly dimorphic sexual trait (antenna length) was heritable only through the same-sex parent in offspring of both sexes. Our results support theory and suggest that intralocus sexual conflict can be resolved substantially by genomic adaptation. Further work is required to identify the proximate mechanisms underlying these patterns.

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“…Some classic examples are colour patterns in fish (Winge, 1927), in poppies (Philp, 1934), in grouse locusts (Nabours, 1929;Nabours et al, 1933), in helicid snails (Cain et al, 1960(Cain et al, , 1968 and in butterflies (Sheppard, 1959;Clarke and Sheppard, 1972). Complex loci are also responsible for the inheritance of the elements of the heterostyle condition in primroses (Mather, 1950;Dowrick, 1956) and of the Rhesus blood groups in man (Fisher, 1953).…”

Section: Linkage Allelism and The Supergenementioning

confidence: 99%