Mitochondrial DNA reveals low population differentiation in elongate loach, Leptobotia elongata (Bleeker): implications for conservation

Liu, Guangxun; Zhou, Jian; Zhou, Dinggang

doi:10.1007/s10641-011-9927-7

Cited by 10 publications

(6 citation statements)

References 25 publications

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“…In addition, similar environment features, such as low altitude and a subtropical climate (except the YS which had a temperate climate) (Table 1), may have some influence on the genetic structure in X. boulengeri (Zhou et al, 2016). The genetic homogeneity among populations of X. boulengeri was congruent with genetic structure reports in other taxa from these regions (Liu et al, 2017; Shen et al, 2017a; Liu, Zhou & Zhou, 2012).…”

Section: Discussionsupporting

confidence: 87%

“…For X. boulengeri , genetic homogeneity among populations indicated high levels of gene flow (Nm) (Table S7), which might be related to the habit of spawning drifting eggs (Liu, Zhou & Zhou, 2012). In addition, similar environment features, such as low altitude and a subtropical climate (except the YS which had a temperate climate) (Table 1), may have some influence on the genetic structure in X. boulengeri (Zhou et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…In the Late Pleistocene, a warm climate (Avise, Walker & Johns, 1998) and fluctuating water levels (Yang, 1986) provided population expansion chances for X. boulengeri and the Yangtze River populations of X. nudicorpa. The effects of a warming postglacial climate upon the demography of many species have been well documented in the upper reaches of the Yangtze River Basin, including Leptobotia microphthalma (Shen et al, 2017a), L. elongate (Liu, Zhou & Zhou, 2012), L. rubrilabris (Shen et al, 2017b) and Coreius heterodon (Yuan et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

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Genetic structure of two sympatric gudgeon fishes (Xenophysogobio boulengeriandX. nudicorpa) in the upper reaches of Yangtze River Basin

Dong

Wang

Tian

et al. 2019

PeerJ

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Background Xenophysogobio boulengeri and X. nudicorpa are the only two species within the genus Xenophysogobio (Cyprinidae, Cypriniformes), and both are endemic to the upper reaches of the Yangtze River. In recent years, due to human activities, the natural resources available to both species have declined sharply. Sympatric species with overlapping niches inevitably compete for their habitats, and genetic structure and diversity can reflect population history and their potential for adaptation to changing environments, which is useful for management decisions. Methods In the present study, microsatellite DNA and mitochondrial DNA (mtDNA) markers were used to investigate the patterns of population genetic structure for X. boulengeri and X. nudicorpa. Microsatellite DNA data, jointly with traditional summary statistics including FST and Fis, were used to assess the population genetic structure by structure analysis. The mtDNA sequences were then used to examine these patterns through time to detect demographic history. Results Xenophysogobio boulengeri and X. nudicorpa exhibited high levels of genetic diversity in Yangtze River populations, except for two populations of X. nudicorpa in the Jinsha River, which were low in mtDNA diversity. X. boulengeri showed genetic homogeneity among populations, whereas X. nudicorpa appeared to have significant geographic genetic divergence. Both species experienced a late-Pleistocene sudden population expansion in Yangtze River populations, but not in the Jinsha River populations of X. nudicorpa. Discussion The genetic homogeneity of X. boulengeri populations might result from similar population expansion events and environment features. The geographic genetic subdivision for X. nudicorpa between the Jinsha and Yangtze Rivers might be caused by the geographic isolation in the middle Pliocene, as well as climate and environmental heterogeneity.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Genetic structure of two sympatric gudgeon fishes (Xenophysogobio boulengeriandX. nudicorpa) in the upper reaches of Yangtze River Basin

Dong

Wang

Tian

et al. 2019

PeerJ

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“…Fishways are hydraulic structures that help fish to climb over obstacles such as dams and locks to spawn and migrate. Fishway plays an important role in fish conservation, but the corresponding design work is complex, which needs to consider the practical design criteria of hydraulic engineering, the path selection of fish swimming in fishway and the corresponding mortality evaluation of fish (Liu et al 2012). Hydropower stations and researchers in China should devote great efforts in solving these problems, aiming for more precise quantitative predictions of efficient fish-passage and an optimum design of the hydraulic structure.…”

Section: Suggestions For Conservationmentioning

confidence: 99%

Dynamic genetic diversity and population structure of Coreius guichenoti

Liu¹,

Lan²,

Xie³

et al. 2021

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To investigate the genetic effects on the population of Coreius guichenoti of dam constructions in the upper reaches of the Yangtze River, we analyzed the genetic diversity and population structure of 12 populations collected in 2009 and 2019 using mitochondrial DNA (mtDNA) control regions. There was no significant difference in genetic diversity between 2009 and 2019 (P > 0.05), but the population structure tended to become stronger. Genetic differentiation (FST) among five populations (LX, BB, YB, SF and JA) collected in 2009 was not significant (P > 0.05). However, some populations collected in 2019 were significantly differentiated (P < 0.05), indicating that the population structure has undergone change. A correlation analysis showed that the genetic diversity of the seven populations collected in 2019 was significantly negatively correlated with geographical height (r = −0.808, P = 0.028), indicating that the populations at high elevations were more vulnerable than those at low elevations. In order to prevent the further decrease of genetic diversity and population resources, some conservation and restoration suggestions, such as fish passage and artificial breeding, are put forward.

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“…Mitochondrial (mtDNA) sequencing is commonly used to measure population genetic variation and differentiation (e.g. Alves et al 2001;Bernal-Ramı´rez et al 2003;Liu et al 2012). The fast mutation rate, maternal inheritance, and lack of recombination make mtDNA unique for use in determining population structure and demographic history.…”

Section: 42: Mitochondrial Sequencingmentioning

confidence: 99%

Population Genetics of New Zealand Pagrus auratus and Genetic Variation of an Aquaculture Broodstock

Ashton¹

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<p>Fisheries and aquaculture are major contributors of nutrition and animal protein worldwide. Understanding the genetic variation and differentiation within and between wild populations is important for both sustainable fisheries management and selection of aquaculture broodstock. This study determined the genetic variation and differentiation of New Zealand Pagrus auratus based on mitochondrial DNA control region sequencing and microsatellite DNA genotyping. Low but significant differentiation was measured between several sample sites, but otherwise the population was genetically panmictic. The M-ratio test and Fu’s Fs statistics indicate that there may have been historical bottlenecks at all sample sites and a more recent bottleneck in the Tasman Bay. Two South Island sites were identified that had not been through recent bottlenecks and were not significantly differentiated from the Tasman Bay, which may provide a source of gene flow to aid its genetic recovery. Comparison of the broodstock and wild genetic variation indicate that the broodstock represented most of the genetic variation found in high frequency in wild populations, but further wild-caught individuals may be needed, based on the criteria used in several previous studies. Simulations indicate that adding approximately 20 and 48 wild-caught individuals from multiple populations to the current broodstock was needed to represent all genetic variation above a target frequency of 0.05 in the Tasman Bay and all sample sites, respectively.</p>

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Mitochondrial DNA reveals low population differentiation in elongate loach, Leptobotia elongata (Bleeker): implications for conservation

Cited by 10 publications

References 25 publications

Genetic structure of two sympatric gudgeon fishes (Xenophysogobio boulengeriandX. nudicorpa) in the upper reaches of Yangtze River Basin

Genetic structure of two sympatric gudgeon fishes (Xenophysogobio boulengeriandX. nudicorpa) in the upper reaches of Yangtze River Basin

Dynamic genetic diversity and population structure of Coreius guichenoti

Population Genetics of New Zealand Pagrus auratus and Genetic Variation of an Aquaculture Broodstock

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