Resolution of the controversial relationship between Pacific and Portuguese oysters internationally and in Vietnam

In, Vu Van; O’Connor, Wayne A.; Sang, Vu Van; Van, Phan Thi; Knibb, Wayne

doi:10.1016/j.aquaculture.2017.03.004

Cited by 20 publications

(10 citation statements)

References 49 publications

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“…The Portuguese oyster, Crassostrea angulata, is becoming an important aquaculture mollusk species in various parts of the world, including Asia and Europe (Grade et al, 2016;Vu et al, 2017a;Gagnaire et al, 2018). The hatchery and production technologies are well established for this species.…”

Section: Introductionmentioning

confidence: 99%

Genomic Prediction for Whole Weight, Body Shape, Meat Yield, and Color Traits in the Portuguese Oyster Crassostrea angulata

Knibb

Gondro

et al. 2021

Front. Genet.

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Genetic improvement for quality traits, especially color and meat yield, has been limited in aquaculture because the assessment of these traits requires that the animals be slaughtered first. Genotyping technologies do, however, provide an opportunity to improve the selection efficiency for these traits. The main purpose of this study is to assess the potential for using genomic information to improve meat yield (soft tissue weight and condition index), body shape (cup and fan ratios), color (shell and mantle), and whole weight traits at harvest in the Portuguese oyster, Crassostrea angulata. The study consisted of 647 oysters: 188 oysters from 57 full-sib families from the first generation and 459 oysters from 33 full-sib families from the second generation. The number per family ranged from two to eight oysters for the first and 12–15 oysters for the second generation. After quality control, a set of 13,048 markers were analyzed to estimate the genetic parameters (heritability and genetic correlation) and predictive accuracy of the genomic selection for these traits. The multi-locus mixed model analysis indicated high estimates of heritability for meat yield traits: 0.43 for soft tissue weight and 0.77 for condition index. The estimated genomic heritabilities were 0.45 for whole weight, 0.24 for cup ratio, and 0.33 for fan ratio and ranged from 0.14 to 0.54 for color traits. The genetic correlations among whole weight, meat yield, and body shape traits were favorably positive, suggesting that the selection for whole weight would have beneficial effects on meat yield and body shape traits. Of paramount importance is the fact that the genomic prediction showed moderate to high accuracy for the traits studied (0.38–0.92). Therefore, there are good prospects to improve whole weight, meat yield, body shape, and color traits using genomic information. A multi-trait selection program using the genomic information can boost the genetic gain and minimize inbreeding in the long-term for this population.

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Section: Introductionmentioning

confidence: 99%

Genomic Prediction for Whole Weight, Body Shape, Meat Yield, and Color Traits in the Portuguese Oyster Crassostrea angulata

Knibb

Gondro

et al. 2021

Front. Genet.

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“…It is the dominant species on the Zhejiang coast, whereas in the Ariake Sea, where it was first found, and in the South Korean peninsula, it coexists with the Pacific oyster and was once thought to be endangered at these locations (Hedgecock et al, 1999). The natural distribution of this species has been reported to include South Korea and southern Japan (Ariake Sea and Seto Inland Sea) (Banks et al, 1994;Hamaguchi et al, 2013), southern China (Wang et al, 2013), and Vietnam (In et al, 2017). The Kumamoto oysters were distributed especially in the warmer estuary and intertidal zones.…”

Section: Dominant Species and Its Distributionmentioning

confidence: 99%

“…The exchange of seedlings may impact the genetic structure of indigenous populations and reduce genetic diversity (Guo, 2009). Mitochondrial DNA sequences, such as cytochrome oxidase C subunit I (COI), are preferred genetic markers because they are highly conserved protein-coding genes in the mitochondrial genome of animals (Folmer et al, 1994); thus, they have been widely used for species identification and genetic diversity assessment of mollusks (Hsiao et al, 2016;Sekino et al, 2016;In et al, 2017;Nowland et al, 2019;Özcan Gökçek et al, 2020;Tan et al, 2020;Melo et al, 2021) and other invertebrates (Yue et al, 2020). Moreover, a mitochondrial noncoding region (MNR) lying between the Gly and Val tRNA synthetase regions has the potential to distinguish different oyster populations (Aranishi and Okimoto, 2005) and has recently been used to analyze the population genetics of C. gigas and C. angulata in Europe and Asia (Moehler et al, 2011;Grade et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Identification of Main Oyster Species and Comparison of Their Genetic Diversity in Zhejiang Coast, South of Yangtze River Estuary

Liu

Xue

et al. 2021

Front. Mar. Sci.

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Oysters are an important aquaculture species distributed worldwide, including in Zhejiang Province, located on the east coast of China. Because of the high diversity and complicated introduction history of oysters and their seedlings, there has been much disagreement regarding the origin of each species, and the dominant and indigenous species remain unclear. We sampled 16 batches of oysters from seven sites in three aquaculture bays and found two main oyster species, Crassostrea sikamea and Crassostrea angulata. The former occupied the higher intertidal zone and comprised more than 70% of the cultured oysters. Based on the cytochrome oxidase C subunit I (COI) and mitochondrial noncoding region (MNR), C. sikamea showed higher genetic diversity than C. angulata. The analysis of molecular variance among COI sequences of these species from the Xiangshan Bay populations were comparable to those of other populations and showed that most of the molecular variance was within groups, which was consistent with the low pairwise fixation index FST values. The neutrality test revealed that C. sikamea experienced population expansion events, whereas for C. angulata, the significant Fu’s Fs and non-significant Tajima’s D test results may indicate a possible population expansion event, implying that C. sikamea is likely an indigenous species. The method established based on internal transcribed spacer 1 digestion by the HindIII restriction enzyme is useful for identifying C. sikamea and C. angulata in the local region. The specific primers on the MNR sequence show potential for distinguishing C. sikamea from four other important Crassostrea oysters. These results highlight the abundance of C. sikamea on the Zhejiang coast and lay the foundation for protecting and utilizing the local oyster germplasm resources and for the sustainable development of the oyster industry.

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“…Kumamoto oysters grow naturally in the warm seas of East Asia, from southern Japan to Vietnam (Banks et al, 1994;Hamaguchi et al, 2013;Wang et al, 2013;In et al, 2017). Even though in the 1940s they were mistaken as Pacific oysters from the Ariake Sea in Japan and introduced to the west coast of the United States, their global production remains limited (Sekino, 2009).…”

Section: Introductionmentioning

confidence: 99%

Molecular Basis of Taste and Micronutrient Content in Kumamoto Oysters (Crassostrea Sikamea) and Portuguese Oysters (Crassostrea Angulata) From Xiangshan Bay

Liu

Jian

et al. 2021

Front. Physiol.

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Oysters are the most extensively cultivated bivalves globally. Kumamoto oysters, which are sympatric with Portuguese oysters in Xiangshan bay, China, are regarded as particularly tasty. However, the molecular basis of their characteristic taste has not been identified yet. In the present study, the taste and micronutrient content of the two oyster species were compared. Portuguese oysters were larger and had a greater proportion of proteins (48.2 ± 1.6%), but Kumamoto oysters contained significantly more glycogen (21.8 ± 2.1%; p < 0.05). Moisture and lipid content did not differ significantly between the two species (p > 0.05). Kumamoto oysters contained more Ca, Cu, and Zn (p < 0.05); whereas Mg and Fe levels were comparable (p > 0.05). Similarly, there was no significant difference between the two species with respect to total amount of free amino acids, umami and bitterness amino acids, succinic acid (SA), and most flavoring nucleotides (p > 0.05). In contrast, sweetness amino acids were significantly more abundant in Portuguese oysters. Volatile organic compounds profiles of the two species revealed a higher proportion of most aldehydes including (2E,4E)-hepta-2,4-dienal in Kumamoto oysters. Overall, Kumamoto oysters contain abundant glycogen, Ca, Zn, and Cu, as well as volatile organic compounds, especially aldehydes, which may contribute to their special taste. However, free amino acid and flavor nucleotides may not the source of special taste of Kumamoto oyster. These results provide the molecular basis for understanding the characteristic taste of Kumamoto oysters and for utilizing local oyster germplasm resources.

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Resolution of the controversial relationship between Pacific and Portuguese oysters internationally and in Vietnam

Cited by 20 publications

References 49 publications

Genomic Prediction for Whole Weight, Body Shape, Meat Yield, and Color Traits in the Portuguese Oyster Crassostrea angulata

Genomic Prediction for Whole Weight, Body Shape, Meat Yield, and Color Traits in the Portuguese Oyster Crassostrea angulata

Identification of Main Oyster Species and Comparison of Their Genetic Diversity in Zhejiang Coast, South of Yangtze River Estuary

Molecular Basis of Taste and Micronutrient Content in Kumamoto Oysters (Crassostrea Sikamea) and Portuguese Oysters (Crassostrea Angulata) From Xiangshan Bay

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