Alternative reproductive strategies in the ruff,Philomachus pugnax: a mixed ESS?

Widemo, Fredrik

doi:10.1006/anbe.1998.0792

Cited by 103 publications

(136 citation statements)

References 26 publications

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“…Independents constitute 80-95% of male ruffs and strive to defend territories on leks [1][2][3]7 . Independent males show a spectacular diversity in the color of their ruff and head tufts (Fig.…”

Section: Openmentioning

confidence: 99%

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Structural genomic changes underlie alternative reproductive strategies in the ruff (Philomachus pugnax)

et al. 2015

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Section: Openmentioning

confidence: 99%

“…Satellites are slightly smaller than independents, usually show white ruff and white tufts (Fig. 1a) and constitute 5-20% of males 7,8 . Satellites are nonterritorial and display submissive behavior, allowing independent males to dominate them at leks (Fig.…”

Section: Openmentioning

confidence: 99%

Structural genomic changes underlie alternative reproductive strategies in the ruff (Philomachus pugnax)

et al. 2015

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“…In contrast, inheritance patterns that involve sex-linked loci best ¢t the data for the species with sex-limited characteristics. Lank et al (1995) rejected sex-linked (Z-linked in birds) models for the inheritance of a well-described dimorphism in male mating behaviour in the ru¡ Philomachus pugnax (Hogan-Warburg 1966;Van Rhijn 1991;Hugie & Lank 1997;Widemo 1998), and supported an autosomal single-locus, two-allele model with complete dominance. The ru¡ is a lekking sandpiper that breeds from northern Europe through Siberia.…”

Section: Introductionmentioning

confidence: 98%

“…Independent' male ru¡s establish lek courtship territories, which they defend against other independents. Satellite' males, representing around 16% of populations, share courts with independents in uneasy transient alliances that appear to be stabilized by female preferences for choosing mates when both morphs are present (Hugie & Lank 1997;Widemo 1998). Independent and satellite males also di¡er in body size and patterns of body mass variation during the breeding season (Bachman & Widemo 1999), and in the coloration of their highly polymorphic breeding plumages, particularly the long £u¡y display plumes that ring their neck (the`ru¡ ') and occipital`head tufts' (Hogan-Warburg 1966).…”

Section: Introductionmentioning

confidence: 99%

Testosterone-induced male traits in female ruffs ( Philomachus pugnax ): autosomal inheritance and gender differentiation

Lank

Coupe

Wynne‐Edwards

1999

Proc. R. Soc. Lond. B

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A balanced polymorphism in male mating behaviour exists in male ru¡s, with no obvious parallel expression in females. Pedigree data of male phenotypes support an autosomal model of inheritance, in contrast to sexlinked inheritance patterns found in other taxa with sex-limited alternative mating strategy polymorphisms. We tested this model by inducing male courtship behaviour in gonad-intact female ru¡s, using subcutaneous testosterone implants that produced physiological concentrations of testosterone. The implants rapidly induced in females both types of male mating behaviour, an increase in body mass typical of pre-breeding males, and the growth of normally male-limited breeding plumage. As predicted under an autosomal model, the distributions of induced male behaviour types in females paralleled those of their brothers and halfbrothers, and were inconsistent with sex-linked models. E¡ects were reversible, and experimental females bred normally in subsequent years. Our results show that genotype-speci¢c male characteristics can be induced by testosterone in female adults that have presumably not undergone neural organization for them early in life, showing direct use of genetic information in intra-and intersexual di¡erentiation.

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“…body size, age), meaning that individuals can opportunistically change their ART during the reproductive period (Gross 1996). Genetically determined tactics usually have equal lifetime reproductive success and their relative abundance is frequency dependent (Widemo 1998). However, when the tactics are conditional, their costs and benefits are not usually equal.…”

Section: Intrasexual Competitive Environmentmentioning

confidence: 99%

The effect of male-male competition and ornament size on mean and variance of courtship intensity towards heterospecific and conspecific females

et al. 2015

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As species do not live in isolation from each other, they are faced with an elementary choice when searching for a mating partner: a choice between conand heterospecific individuals. Despite the remarkable research effort on hybridization and its avoidance, there are still some less well covered areas, e.g. what is the role of males in hybridization, what patterns are found in sympatric wild populations, what role do alternative reproductive tactics (ARTs) have on the likelihood of heterospecific matings, and what are the true costs of heterospecific interactions. In this thesis I first quantify the frequency of hybridization, backcrossing and heterospecific matings in sympatric wild populations of Calopteryx splendens and C. virgo damselflies in Finland. The possible influence of population densities, relative abundances of the species, and operational sex ratios on the frequency of heterospecific matings is also investigated. The second aim is to investigate how the intensity of territorial competition influences males' reproductive response to a heterospecific female. Finally, I dissect the importance of male ARTs on hybridization propensity and I attempt to quantify the reproductive costs that males' hybridization propensity inflicts among the tactics. The results imply a major role for C. splendens males in heterospecific reproductive interactions between the study species. Especially territorial males seem to be prone to hybridization, and the prevalence of hybridization is increased with a high availability of C. virgo females. Hybridization seems to be costly because there was high discordance between heterospecific mating frequency and observed numbers of hybrids. However, heterospecific courtship did not reduce conspecific mating success. The results also show that C. splendens males are able to adjust their level of heterospecific courtship according to the competitive environment as well as to the ART it follows. My thesis is a step towards understanding the causes of species reproductive interactions in wild populations.

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Alternative reproductive strategies in the ruff,Philomachus pugnax: a mixed ESS?

Cited by 103 publications

References 26 publications

Structural genomic changes underlie alternative reproductive strategies in the ruff (Philomachus pugnax)

Structural genomic changes underlie alternative reproductive strategies in the ruff (Philomachus pugnax)

Testosterone-induced male traits in female ruffs ( Philomachus pugnax ): autosomal inheritance and gender differentiation

The effect of male-male competition and ornament size on mean and variance of courtship intensity towards heterospecific and conspecific females

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