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Nat Genet. 2016 Jan;48(1):84-8. doi: 10.1038/ng.3430. Epub 2015 Nov 16.

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

Author information

1
Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.
2
BGI-Shenzhen, Shenzhen, China.
3
State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China.
4
Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences, Umeå, Sweden.
5
Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden.
6
Institute National de la Recherche Agronomique, AgroParisTech, Génetique Animale et Biologie Intégrative, Jouy-en-Josas, France.
7
Bioinformatics Infrastructure for Life Sciences, Uppsala University, Uppsala, Sweden.
8
Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden.
9
Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, Texas, USA.

Abstract

The ruff is a Palearctic wader with a spectacular lekking behavior where highly ornamented males compete for females. This bird has one of the most remarkable mating systems in the animal kingdom, comprising three different male morphs (independents, satellites and faeders) that differ in behavior, plumage color and body size. Remarkably, the satellite and faeder morphs are controlled by dominant alleles. Here we have used whole-genome sequencing and resolved the enigma of how such complex phenotypic differences can have a simple genetic basis. The Satellite and Faeder alleles are both associated with a 4.5-Mb inversion that occurred about 3.8 million years ago. We propose an evolutionary scenario where the Satellite chromosome arose by a rare recombination event about 500,000 years ago. The ruff mating system is the result of an evolutionary process in which multiple genetic changes contributing to phenotypic differences between morphs have accumulated within the inverted region.

PMID:
26569123
DOI:
10.1038/ng.3430
[Indexed for MEDLINE]

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