Role of Polyploidy in the Evolution of Fishes

Schultz, R. Jack

doi:10.1007/978-1-4613-3069-1_17

Cited by 97 publications

(75 citation statements)

References 64 publications

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“…Tetraploid cpyrinids can arise from the diploid ancestor through autotetraploidization with spermatozoon and ovum each containing a diploid complement of chromosomes (Oellermann and Skelton, 1990). The advantageous traits of polyploidy for cyprinids fish might be summed up as large body size, fast growth rate, long life and great ecological adaptability (Schultz, 1980;Uyeno and Smith, 1972). For example, the hexaploid Barbus species in Africa (Clade A, Figure 2) are all found to be relatively large, long-lived and ecologically flexible species (Oellermann and Skelton, 1990).…”

Section: Evolution Of Ploidy Levels In the Cyprininaementioning

confidence: 99%

Cyprininae phylogeny revealed independent origins of the Tibetan Plateau endemic polyploid cyprinids and their diversifications related to the Neogene uplift of the plateau

Wang

Gan

et al. 2016

Sci. China Life Sci.

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Origin and diversification of the Tibetan polyploid cyprinids (schizothoracins) may help us to explore relationships between diversification of the cyprinids and the Tibetan Plateau uplift. Cyprininae phylogeny was analyzed using mitochondrial and nuclear DNA sequences to trace origins of polyploidy and diversifications of schizothoracins. Ancestral states reconstruction for ploidy levels indicated that the Cyprininae was diploid origin and the schizothoracin clades tetraploid origins. There were two diversification rate shifts along with diversification of the cyprinine fishes in response to the Tibetan uplift. The unusual diversification shifts were located to branches subtending the clades of Tibetan polyploid cyprinids. Our analyses suggested that (i) phylogeny of Cyprininae recovered two independent origins of the Tibetan polyploidy schizothoracins; (ii) diversifications of the schizothoracins were closely related to the Neogene uplift of the Tibetan plateau in the following ways: the relatively ancient Late Oligocene-Middle Miocene adaptive radiation may be associated with the uplift of the southern Tibet and Himalaya; the Middle Miocene-Early Pleistocene lineage-specific diversification broadly coincident with major phase of the Neogene Tibetan uplift; and the most recent Pleistocene diversification shift in Schizothorax closely coincident with the successive Kunlun-Huanghe and Gonghe movements of the Tibetan uplift and the glaciation-induced climate oscillations on the plateau.Cyprininae, polyploid, schizothoracins, the Tibetan Plateau, diversifications Citation:Wang, X., Gan, X., Li J., Chen, Y., and He, S. (2016). Cyprininae phylogeny revealed independent origins of the Tibetan Plateau endemic polyploid cyprinids and their diversifications related to the Neogene uplift of the plateau.

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Section: Evolution Of Ploidy Levels In the Cyprininaementioning

confidence: 99%

Cyprininae phylogeny revealed independent origins of the Tibetan Plateau endemic polyploid cyprinids and their diversifications related to the Neogene uplift of the plateau

Wang

Gan

et al. 2016

Sci. China Life Sci.

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“…In fishes, polyploidy is often associated with unisexual reproduction (Mogie 1986); however, it is not clear whether it is the cause or the consequence (Schultz 1969(Schultz , 1980Mable 2004). Interestingly, hybridization is also very common in fishes and a positive correlation of hybridization and polyploidy can be observed (Le Comber & Smith 2004).…”

Section: Hybridization Leading To the Intro-gression Of Paternal Genementioning

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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“…Polyploidy is less frequent in the animal kingdom. Polyploidization has clearly occurred in some invertebrate and lower vertebrate taxa (White, 1978;Schultz, 1980;Komaru et al, 2000). It has been suggested recently that two rounds of genome duplication (or tetraploidization) have occurred during the evolution of vertebrates (Furlong and Holland, 2002;Spring, 2002).…”

Section: Introductionmentioning

confidence: 99%

Chromosome inheritance in triploid Pacific oyster Crassostrea gigas Thunberg

Gong

Yang²,

Zhang

et al. 2004

Heredity

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Reproduction and chromosome inheritance in triploid Pacific oyster (Crassostrea gigas Thunberg) were studied in diploid female Â triploid male (DT) and reciprocal (TD) crosses. Relative fecundity of triploid females was 13.4% of normal diploids. Cumulative survival from fertilized eggs to spat stage was 0.007% for DT crosses and 0.314% for TD crosses. Chromosome number analysis was conducted on surviving progeny from DT and TD crosses at 1 and 4 years of age. At Year 1, oysters from DT crosses consisted of 15% diploids (2n ¼ 20) and 85% aneuploids. In contrast, oysters from TD crosses consisted of 57.2% diploids, 30.9% triploids (3n ¼ 30) and only 11.9% aneuploids, suggesting that triploid females produced more euploid gametes and viable progeny than triploid males. Viable aneuploid chromosome numbers included 2n þ 1, 2n þ 2, 2n þ 3, 3nÀ2 and 3nÀ1. There was little change over time in the overall frequency of diploids, triploids and aneuploids. Among aneuploids, oysters with 2n þ 3 and 3nÀ2 chromosomes were observed at Year 1, but absent at Year 4. Triploid progeny were significantly larger than diploids by 79% in whole body weight and 98% in meat weight at 4 years of age. Aneuploids were significantly smaller than normal diploids. This study suggests that triploid Pacific oyster is not completely sterile and cannot offer complete containment of cultured populations.

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Role of Polyploidy in the Evolution of Fishes

Cited by 97 publications

References 64 publications

Cyprininae phylogeny revealed independent origins of the Tibetan Plateau endemic polyploid cyprinids and their diversifications related to the Neogene uplift of the plateau

Cyprininae phylogeny revealed independent origins of the Tibetan Plateau endemic polyploid cyprinids and their diversifications related to the Neogene uplift of the plateau

The origin and evolution of a unisexual hybrid:Poecilia formosa

Chromosome inheritance in triploid Pacific oyster Crassostrea gigas Thunberg

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