Evolutionary significance of introgressive hybridization in cyprinid fishes

Dowling, Thomas E.; DeMarais, Bruce D.

doi:10.1038/362444a0

Cited by 205 publications

(189 citation statements)

References 21 publications

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“…Therefore, we suspect that there has been an introgression of mtDNA from an Asian Cobitis by hybridization. There are many examples of introgression of mtDNA in vertebrates (Dowling & De Marais, 1993;Duvernell & Aspinwall, 1995;Rhymer & Simberloff, 1996;Avise et al, 1997;Dowling & Secor, 1997;Ludwig et al, 2003, Freyhof et al, 2005. Freyhof et al (2005) demonstrated that introgression of mtDNA is not even restricted to closely related species or genera in one group of cypriniform fishes.…”

Section: Myxocyprinus Asiaticusmentioning

confidence: 99%

Multiple invasions of Europe by East Asian cobitid loaches (Teleostei: Cobitidae)

et al. 2008

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While it has been widely suggested that freshwater fishes from East Asia invaded the western Palaearctic, details about this process are largely unknown. Here, using the cytochrome b gene, we evaluated the phylogenetic relationships of a small group of Eurasian primary freshwater fishes (Cobitidae), which are widely distributed and species rich in East Asia and Europe, with the purpose of inferring their invasion process of Europe from East Asia. Though phylogenetic relationships of cobitids were not well resolved, our analysis could identify three sister groups formed by the European and East Asian cobitids, which brought new insights into the biogeography of the genera Cobitis, Misgurnus, and Sabanejewia. The present results support the view that Asian cobitid fishes may have invaded Europe at least five times independently, and once reverse colonization of European cobitids to East Asia could also be found. Ancestral Sabanejewia might have been the first cobitids to cross Siberia and invade the EMZS (Euro-Mediterranean zoogeographic subregion) about 33.54 million years ago (MYA). One lineage of Cobitis and the ancestor of Misgurnus fossilis (Linnaeus) almost in the same time invaded the Europe, responding to 16.71 MYA and 16.59 MYA, respectively. Three different lineages of Cobitis were found to have invaded the EMZS from East Asia, and once reverse invasion to East Asia occurred to one subclade of European Cobitis. And our data also suggest that the diversity of East Asian cobitid fishes, especially of the genus Cobitis, is greatly underestimated.

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Section: Myxocyprinus Asiaticusmentioning

confidence: 99%

Multiple invasions of Europe by East Asian cobitid loaches (Teleostei: Cobitidae)

et al. 2008

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“…In fact, hybridization is reported frequently in many species of teleosts (Salzburger et al 2002;Meyer et al 2006) even though some fish species show elaborate mating behaviour and internal fertilizationtwo prezygotic isolation mechanisms that are, in general, assumed to prevent hybridization in other animals (Howard & Berlocher 1998;Mallet 1998;Mabry & Verrell 2004). The ready acceptance of foreign genomes in some species may be correlated to the fish's tolerance towards polyploidy (Dowling & DeMarais 1993;Leggatt & Iwama 2003).…”

Section: Introductionmentioning

confidence: 99%

The origin and evolution of a unisexual hybrid:Poecilia formosa

Lampert

Schartl

2008

Phil. Trans. R. Soc. B

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Clonal reproduction in vertebrates can always be traced back to hybridization events as all known unisexual vertebrates are hybrids between recognized species or genetically defined races. Interestingly, clonal vertebrates often also rely on interspecific matings for their reproduction because gynogenesis (sperm-dependent parthenogenesis) and hybridogenesis are common modes of propagation. While in most cases these hybridization events leave no hereditary traces in the offspring, occasionally the genome exclusion mechanism fails and either small parts of male genetic material remain inside the oocyte in the form of microchromosomes, or fusion of the sperm nucleus with the oocyte nucleus leads to polyploid individuals. In this review, we highlight the important role of hybridization for the origin and evolution of a unisexual hybrid: the Amazon molly, Poecilia formosa.

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“…This sentiment is also true for the equally influential evolutionary botanists Ledyard Stebbins and Edgar Anderson. Indeed, the last decade has witnessed a renaissance of studies (e.g., Arnold, 1992Arnold, , 1997Arnold, , 2004Grant andGrant, 1992, 2002;Dowling and DeMarais, 1993;Rieseberg, 1997;Rieseberg et al, 2003) into the evolutionary role of natural hybridization-for example, the natural interbreeding of individuals from wild populations that can be distinguished on the basis of one or more heritable characters (Harrison, 1990;Arnold, 1997)-the process explored and described extensively by these investigators (e.g., Anderson and Stebbins, 1954). Through new insights and investigations, the general conceptual framework proposed by these authors, that natural hybridization was evolutionarily creative through the origin of new species and adaptations (or the transfer of adaptations between the hybridizing forms), has been extended greatly in the last 10 years.…”

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confidence: 99%