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Bartley, D. M.; Rana, K.J.; Immink, Anton

doi:10.1023/a:1016691725361

Cited by 314 publications

(59 citation statements)

References 39 publications

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“…The scope for sturgeon aquaculture has been increasing due to recent expansion of caviar luxury consumers that paved a way for the production of sturgeon hybrids over past decades (Bronzi et al, 1999). In aquaculture, hybrids are formed to increase fitness, which is manifested by improved physiological and genetic properties compared to parental species (Bartley, Rana, & Immink, 2001;Liu et al, 2017). However, some authors found no significant difference in the fitness traits of some fishes (Van der Sluijs, Van Dooren, Seehausen, & Van Alphen, 2008).…”

Section: Discussionmentioning

confidence: 99%

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The heterosis estimates for growth and survival traits in sterlet and Siberian sturgeon purebreds and hybrids

et al. 2020

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The aim of the present study was to estimate and compare the growth and survival traits of the hybrids and purebreds produced by crossing the Siberian sturgeon (Acipenser baerii) (S) and sterlet (Acipenser ruthenus) (St) in order to determine the heterosis effect in the F1 generation. We compared the breeding conditions, mean body weight (BW) and cumulative survival in the artificially produced hybrid crosses of sterlet and Siberian sturgeon with respect to their pure parental species in indoor and outdoor aquaculture systems at different developmental stages. Fertilization and hatching rates were found to be significantly higher in S × S purebred compared to St × S hybrid. The highest values of BW were recorded in St × S hybrid (557.54 ± 179.7 g) on 862 days post-hatch (dph) while the highest cumulative survival was recorded in S × S purebred (14.3%). The recorded cumulative survival and mean BW was significantly lower in St × St purebred. The highest positive heterosis was recorded for mean BW of St × S hybrid (51.3% on 862 dph) throughout the sampling points. The studied sturgeon hybrids had higher mean BW compared to St × St purebred under suboptimal rearing conditions. Although there was no clear demonstration of the superiority in performance of reciprocal hybrids over purebreds, the St × S hybrid can be used for achieving better productivity in aquaculture systems. How to cite this article: Shivaramu S, Vuong DT, Havelka M, Lebeda I, Kašpar V, Flajšhans M. The heterosis estimates for growth and survival traits in sterlet and Siberian sturgeon purebreds and hybrids.

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Section: Discussionmentioning

confidence: 99%

“…Sterlet are generally more susceptible to mortality during the incubation and hatching period (Chebanov & Galich, 2011). The reproductive indicators are considered to be complementary indicators, while growth is probably one of the most driving and desirable indicators in aquaculture (Bartley et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

The heterosis estimates for growth and survival traits in sterlet and Siberian sturgeon purebreds and hybrids

et al. 2020

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“…Heterosis arises from the combination of superior alleles at multiple loci, allelic interactions with one or multiple hybrid alleles and epistasis (Hochholdinger and Hoecker, 2007) and often results in the expression of superior traits in first-generation hybrids compared to parental lines. Research on salmonids has however shown that first-generation hybrids often perform less well than parental lines (Bartley et al, 2000; Bryden et al, 2004; Miller et al, 2004), suggesting that disruption of additive effects and dominance interactions can potentially reduce growth performance in first-generation hybrids (McClelland et al, 2005). …”

Section: Introductionmentioning

confidence: 99%

Hybridization between char species (Salvelinus alpinus and Salvelinus fontinalis): a fast track for novel allometric trajectories

et al. 2018

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Hybridization between closely related species can generate genetic and phenotypic variation, providing valuable biological material to assess the physiological impact of the structural or functional variability of different organs. In the present study, we examined growth rates of various organs and whole body in brook char, Arctic char and their reciprocal hybrids over a period of 281 days. Parental species achieved significantly higher body mass than their hybrids. Hybridization significantly reduced the relative size of the heart, liver and spleen. The relative size of pyloric caeca did not differ among the four groups. The observed lower growth performance of the hybrids compared to parental species strongly suggests that divergence in the relative size of digestive organs, liver and heart partly dictate growth capacity. Our results also suggest that the increased variability achieved through hybridization may prove useful in a genetic selection program.

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“…gene flow occur between deeply divergent lineages such as across distinct genera of birds (Grant & Grant, 1992), fishes (Amini, Zamini, & Ahmadi, 2007;Bartley, Rana, & Immink, 2000) or flowering plants (Knobloch, 1972). Conversely, a growing number of examples show that porous reproductive barriers are not preventing speciation from taking place, implying that speciation with gene flow is a more common phenomenon than previously thought (Nosil, 2008;Petit & Excoffier, 2009).…”

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Porous barriers? Assessment of gene flow within and among sympatric long‐eared bat species

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Ashrafi

Arlettaz

et al. 2018

Ecology and Evolution

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Species are the basic units for measuring biodiversity and for comprehending biological interactions. Yet, their delineation is often contentious, especially in groups that are both diverse and phenotypically conservative. Three cryptic species of long‐eared bats, Plecotus auritus, P. austriacus, and P. macrobullaris, co‐occur over extensive areas of Western Europe. The latter is a fairly recent discovery, questioning the overall diversity of the entire Plecotus complex. Yet, high morphological and acoustic similarities compromise the reliable identification of long‐eared bats in the field. We postulate that such extensive phenotypic overlap, along with the recurrent observation of morphologically intermediate individuals, may hide rampant interspecific hybridization. Based on a geographic sampling centered on areas of sympatry in the Alps and Corsica, we assessed the level of reproductive isolation of these three Plecotus species with mitochondrial and nuclear markers, looking at both inter‐ and intraspecific genetic population structuring. No sign of hybridization was detected between these three species that appear well separated biologically. Genetic structuring of populations, however, reflected different species‐specific responses to environmental connectivity, that is, to the presence of orographic or sea barriers. While the Alpine range and the Ligurian Sea coincided with sharp genetic discontinuities in P. macrobullaris and P. austriacus, the more ubiquitous P. auritus showed no significant population structuration. There were clear phylogeographic discrepancies between microsatellite and mitochondrial markers at the intraspecific level, however, which challenges the reliance on simple barcoding approaches for the delineation of sound conservation units.

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Cited by 314 publications

References 39 publications

The heterosis estimates for growth and survival traits in sterlet and Siberian sturgeon purebreds and hybrids

The heterosis estimates for growth and survival traits in sterlet and Siberian sturgeon purebreds and hybrids

Hybridization between char species (Salvelinus alpinus and Salvelinus fontinalis): a fast track for novel allometric trajectories

Porous barriers? Assessment of gene flow within and among sympatric long‐eared bat species

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