Genetic diversity and population structure of the sea star Asterias amurensis in the northern coast of China

Wang, Quanchao; Liu, Ying; Peng, Zirui; Chen, Linlin; Li, Baoquan

doi:10.1007/s00343-022-1436-3

Cited by 3 publications

(2 citation statements)

References 38 publications

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“…These are in concordance with previous results obtained for M. yessoensis where values of haplotype and nucleotide diversity varied from 0.825 to 0.912 and from 0.0077 to 0.0105 , respectively, and h=0.83 and π=0.0203 (Sato and Nagashima 2001). This also agrees with results for other marine invertebrates mtDNA: h=0.925- (Wang et al 2023). According to the Grant-Bowen hypothesis (1998) of different combinations of haplotype and nucleotide diversity, we can assume that M. yessoensis underwent population growth after the bottleneck.…”

Section: Discussionsupporting

confidence: 93%

Population genetic structure of Yesso scallop (Mizuhopecten yessoensis) of Russian Far East revealed by mitochondrial and microsatellite genetic markers

Khamatova,

Malyar,

Yagodina

et al. 2024

Preprint

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Yesso scallop (Mizuhopecten yessoensis) is one of the main marine aquaculture species of the Russian Far East. However, the population size of this species is declining due to overfishing and habitat loss. As the population genetic structure of the scallop from Russia is poorly studied, we analyzed polymorphism of the noncoding region mitochondrial DNA (NcR2) and seven microsatellite loci. Genetic diversity and structure of M. yessoensis populations from four geographical areas of the Sea of Japan and the Sea of Okhotsk were revealed. A total of 24 haplotypes with the one main observed in all studded populations were identified. All populations had high genetic diversity with mean expected heterozygosity from 0.612 to 0.687 and haplotype diversity from 0.619 to 0.793, except for the northern sample from the Terpeniya Gulf (h = 0.47). Small but statistically significant genetic differentiation was observed between the southern population from the Posyet Gulf (Sea of Japan) and populations from the Terpeniya Gulf and Busse Lagoon (Sea of Okhotsk). Despite the high genetic variation between populations, low differentiation, and weak geographical separation was observed that suggest Yesso scallop forms the Sea of Japan and the Sea of Okhotsk to be one panmictic population. Our results could provide useful information for resource management and genetic monitoring of the economically and ecologically important species of marine bivalves.

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Section: Discussionsupporting

confidence: 93%

Population genetic structure of Yesso scallop (Mizuhopecten yessoensis) of Russian Far East revealed by mitochondrial and microsatellite genetic markers

Khamatova,

Malyar,

Yagodina

et al. 2024

Preprint

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“…Molecular biology research focussing on the genetic diversity of A. amurensis has been relatively limited, but see Matsubara et al 16 So far, studies on the genetic diversity of the A. amurensis have been limited to the analysis of mitochondrial CO1 and microsatellite markers, without delving into the analysis at the whole-genome level. 17 …”

Section: Introductionmentioning

confidence: 99%

High-quality chromosome-level genome assembly of the Northern Pacific sea star Asterias amurensis

Huang,

Liu,

Zeng

et al. 2024

DNA Research

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Asterias amurensis, a starfish species that is native to countries such as China and Japan, as well as non-native regions like Australia, has raised serious concerns in terms of its impact on ecology and economy. To gain a better understanding of its population genomics and dynamics, we successfully assembled a high-quality chromosome-level genome of A. amurensis using PacBio and Hi-C sequencing technologies. A total of 87 scaffolds assembly with contig N50 length of 10.85 Mb and scaffold N50 length of 23.34 Mb were obtained, with over 98.80% (0.48 Gb) of them anchored to 22 pseudochromosomes. We predicted 16673 protein-coding genes, 95.19% of which were functionally annotated. Our phylogenetic analysis revealed that A. amurensis and Asterias rubens formed a clade, and their divergence time was estimated ~ 28 million years ago (Mya). The significantly enriched pathways and Gene Ontology terms related to the amplified gene family were mainly associated with immune response and energy metabolism, suggesting that these factors might have contributed to the adaptability of A. amurensis to its environment. This study provides valuable genomic resources for comprehending the genetics, dynamics, and evolution of A. amurensis, especially when population outbreaks or invasions occur.

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Genetic Variation in the Atlantic Bobtail Squid‐Vibrio Symbiosis From the Galician Rías

Pérez‐Ferrer,

Ashraf,

Rodrigues

et al. 2024

Molecular Ecology

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Symbiotic marine bacteria that are transmitted through the environment are susceptible to abiotic factors (salinity, temperature, physical barriers) that can influence their ability to colonize their specific hosts. Given that many symbioses are driven by host specificity, environmentally transmitted symbionts are more susceptible to extrinsic factors depending on conditions over space and time. In order to determine whether the population structure of environmentally transmitted symbionts reflects host specificity or biogeography, we analysed the genetic structure of Sepiola atlantica (Cephalopoda: Sepiolidae) and their Vibrio symbionts (V. fischeri and V. logei) in four Galician Rías (Spain). This geographical location is characterized by a jagged coastline with a deep‐sea entrance into the land, ideal for testing whether such population barriers exist due to genetic isolation. We used haplotype estimates combined with nested clade analysis to determine the genetic relatedness for both S. atlantica and Vibrio bacteria. Analyses of molecular variance (AMOVA) were used to estimate variation within and between populations for both host and symbiont genetic data. Our analyses reveal a low percentage of variation among and between host populations, suggesting that these populations are panmictic. In contrast, Vibrio symbiont populations show certain degree of genetic structure, demonstrating that the hydrology of the rías is driving bacterial distribution (and not host specificity). Thus, for environmentally transmitted symbioses such as the sepiolid squid‐Vibrio association, abiotic factors can be a major selective force for determining population structure for one of the partners.

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Genetic diversity and population structure of the sea star Asterias amurensis in the northern coast of China

Cited by 3 publications

References 38 publications

Population genetic structure of Yesso scallop (Mizuhopecten yessoensis) of Russian Far East revealed by mitochondrial and microsatellite genetic markers

Population genetic structure of Yesso scallop (Mizuhopecten yessoensis) of Russian Far East revealed by mitochondrial and microsatellite genetic markers

High-quality chromosome-level genome assembly of the Northern Pacific sea star Asterias amurensis

Genetic Variation in the Atlantic Bobtail Squid‐Vibrio Symbiosis From the Galician Rías

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