Mating Patterns in Avian Hybrid Zones — A Meta-Analysis and Review

Randler, Christoph

doi:10.5253/078.096.0108

Cited by 27 publications

(23 citation statements)

References 64 publications

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“…First, sexual character displacement (including reinforcement) would occur if costs associated with the reduced fitness of hybrids favored the divergence of color patterns involved in prezygotic isolation (Dobzhansky 1937; Coyne and Orr 1989, 1997; Servedio and Noor 2003). Recent evidence for a significant (mean) effect of assortative mating across 58 studies of avian hybrid zones (Randler 2008) supports a role for reproductive character displacement in the kind of rapid divergent evolution of color pattern that we have documented. Second, social character displacement may result when costs associated with misdirected intraspecific aggression favor the divergence of color patterns involved in species recognition (West‐Eberhard 1983; Kingston et al 2001; Tynkkynen et al 2005).…”

Section: Discussionsupporting

confidence: 77%

Rapid Sympatry Explains Greater Color Pattern Divergence in High Latitude Birds

2010

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Latitudinal variation in patterns of evolution has fascinated biologists for over a century, but our understanding of latitudinal differences in evolutionary processes-such as selection and drift-remains limited. Here, we test for, and find, accelerated evolution of color patterns in bird taxa that breed at higher latitudes compared with those breeding in the tropics, analyzing data from seven diverse avian families. Most important, we show that the extent of overlap of species' breeding ranges (degree of sympatry) explains the elevated rate of color pattern evolution at higher latitudes. We suggest that the dynamic shifts in breeding ranges that accompanied climatic changes during the last 3 million years (Milankovitch Oscillations) resulted in more rapid and more frequent secondary contact at high latitudes. We argue that sympatry among diverging clades causes greater divergence of color traits in birds at higher latitudes through sexual, social, or ecological character displacement that accelerate rates of evolution, and through the selective elimination of weakly differentiated lineages that hybridize and fuse in sympatry (differential fusion). K E Y W O R D S :Character displacement, color patterns, differential fusion, latitudinal gradients, rates of evolution, reinforcement, speciation, sympatry.

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Section: Discussionsupporting

confidence: 77%

Rapid Sympatry Explains Greater Color Pattern Divergence in High Latitude Birds

2010

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“…In this situation, hybridization may be encouraged when all conspecific mates are paired and the remaining unpaired individual has a choice between mating heterospecifically or not breeding. Some birds will mate heterospecifically rather than not mating at all, providing that doing so will produce viable hybrids (Randler 2002(Randler , 2008. In terms of lifetime reproductive success, hybridization with a related species may be a better alternative than remaining unpaired (Randler 2006).…”

Section: Discussionmentioning

confidence: 99%

Heterospecific Pairing and Hybridization Between Wild Humboldt and Magellanic Penguins in Southern Chile

Simeone¹,

Hiriart‐Bertrand

Reyes-Arriagada

et al. 2009

Condor

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“…Hybridisation is likely among Oenanthe species, especially between O. pleschanka and O. h. melanoleuca (Panov 2005;Aliabadian et al 2007;Randler 2008), which show a wide hybrid zone in Iran. Although there are no breeding records from O. cypriaca outside Cyprus, it may be possible that the species also breeds on the southern coast of Turkey, because the species apparently has some vagrancy potential (Förschler et al 2010) and, recently, we have suggested probable breeding of O. h. melanoleuca on Cyprus (Randler and Crabtree 2010), which may also facilitate hybridisation between the taxa.…”

Section: Playbacksmentioning

confidence: 99%

“…However, molecular studies have not been carried out to support the morphological, behavioural and bioacoustic evidence. Above and beyond the molecular analysis, prezygotic isolation-a key factor of the biological species concept-should also provide further evidence for species isolation (e.g., in assortative mating; Randler 2008). As there are no overlapping breeding areas with other Oenanthe species, hybridisation-which is common in Oenanthe species (Cramp 1988;Panov 2005;Randler 2006;Aliabadian et al 2007)-could not be assessed as a pre-requisite for the biological species concept (e.g.…”

Section: Introductionmentioning

confidence: 99%

Phylogeography, pre-zygotic isolation and taxonomic status in the endemic Cyprus Wheatear Oenanthe cypriaca

et al. 2011

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The insular endemic Cyprus Wheatear Oenanthe cypriaca has been considered as a subspecies of Pied Wheatear O. pleschanka. However, due to several differences in behaviour, habitat selection and morphology, it is currently treated by most authors as an independent species. Here, we used mitochondrial nucleotide sequences of the cytochrome oxidase subunit 1 gene (679 base pairs), playback experiments and dummy presentations to assess the status of O. cypriaca. For the playback experiments we used the conspecific song, and heterospecific songs of the two subspecies of Black-eared Wheatear O. hispanica hispanica and O. hispanica melanoleuca, O. pleschanka, and Finsch's Wheatear O. finschii. Experimental dummy presentations included O. cypriaca, O. pleschanka and a dark and light morph of O. h. melanoleuca. O. cypriaca responded significantly stronger towards the conspecific model and towards conspecific playbacks than towards heterospecific stimuli. ML and BI analyses support the close relationship between O. cypriaca, O. pleschanka and O. h. melanoleuca. With a relative high posterior probability value (0.98), O. cypriaca clusters closer to O. h. melanoleuca from Iran and Israel (on migration) and O. pleschanka from Iran than to O. pleschanka obtained from Kazakhstan, Russia, Mongolia and wintering areas in East Africa (Kenya). The scenario suggests that O. cypriaca might be either a relatively young taxon, which is yet behavioural distinct, but genetically still similar to its sister populations on the mainland. Alternatively, we may assume a close relationship as an indication for potential ongoing hybridisation processes involving all three forms.

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Mating Patterns in Avian Hybrid Zones — A Meta-Analysis and Review

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 27 publications

References 64 publications

Rapid Sympatry Explains Greater Color Pattern Divergence in High Latitude Birds

Rapid Sympatry Explains Greater Color Pattern Divergence in High Latitude Birds

Heterospecific Pairing and Hybridization Between Wild Humboldt and Magellanic Penguins in Southern Chile

Phylogeography, pre-zygotic isolation and taxonomic status in the endemic Cyprus Wheatear Oenanthe cypriaca

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