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1.
HALVOR KNUTSEN DAVID FIANI HANNE SANNS A. RUS HOELZEL 《Molecular ecology resources》2007,7(5):851-853
We developed polymerase chain reaction primers for nine dinucleotide microsatellite loci in the marine deep‐sea fish, the tusk (Brosme brosme). All markers were obtained from a partial genomic DNA library, and characterized in 100 unrelated individuals from one putative population. The number of alleles ranged from two to 60 with an average of 15/locus. The observed heterozygosity ranged from 0.020 to 0.826 (average 0.438). Several of the markers amplified multiple alleles from the two other gadoid species tested. 相似文献
2.
We developed primers for two dinucleotide and eight tetranucleotide microsatellite loci in a marine fish, the ling (Molva molva). All markers were obtained from partial genomic DNA libraries and characterized in 55 unrelated individuals from one putative population. The number of alleles ranged from five to 24 (average 10.5) per locus, and the observed heterozygosity ranged from 0.218 to 0.981 (average 0.643). No loci amplified in two other gadoid species tested, the Atlantic cod (Gadus morhua) and the tusk (Brosme brosme). 相似文献
3.
Eighteen microsatellite markers were isolated and characterized using an enrichment protocol in the Chinese mandarin fish Siniperca chuatsi (Basilewsky), a commercially important piscivorous fish in China. Out of 48 pairs of primers designed, 18 loci exhibited polymorphism with three to six alleles (mean 4.4 alleles/locus) and average observed heterozygosity ranged from 0.633 to 0.833 (mean 0.748) in a test population from Dongting Lake of China. Except for two loci, all other 16 loci were in the Hardy–Weinberg equilibrium. These markers would be useful for such studies as population genetics, ecology and selective breeding of the Chinese mandarin fish in future. 相似文献
4.
H. IWATA K. WATANABE H. TAKESHIMA K. IGUCHI M. NISHIDA 《Molecular ecology resources》2006,6(4):1076-1079
A total of 49 novel polymorphic microsatellite markers in the ayu fish, Plecoglossus altivelis, were successfully isolated and characterized. The number of alleles per locus, observed heterozygosity, and expected heterozygosity ranged from two to 25 (11.3 on average), from 0.125 to 1.000 (0.648 on average), and from 0.123 to 0.957 (0.751 on average), respectively. These microsatellite markers will be useful for both studying population structure and identifying quantitative trait loci that control evolutionarily and economically important traits of ayu. 相似文献
5.
The golden pompano (Trachinotus blochii) is a marine fish species in tropical regions. No information about genetic variation and population structure of wild populations
is available. A first set of 12 polymorphic microsatellites isolated from this species were characterized. The number of alleles
ranged from 5 to 14 with an average of 8.0 alleles per locus. All 12 markers conformed to HWE and were in linkage equilibrium.
These 12 microsatellite markers supply the first set of co-dominant DNA markers for studying population genetics of the species
T. blochii. 相似文献
6.
利用47个根据已报道的QTL位点或者已被精细定位或克隆的与水稻产量性状基因紧密连锁的产量位点标记,对来自中国、印度和越南等国的58份水稻恢复系进行遗传多样性分析。结果表明:(1)在中国恢复系中,47个产量位点标记中有36个具有多态性,共检测到90个等位基因,每个标记检测到等位基因2~4个,平均为2.500个;有效等位基因共62.905个,平均每个标记1.747个;36个有效标记的Shannon信息指数平均值为0.632,变幅为0.271~1.266。(2)在来自国外的材料中,47个产量位点标记均具有多态性,共检测到131个等位基因,每个标记检测到的等位基因数为2~6个,平均2.787个;有效等位基因数共82.686个,平均1.759个;47个标记的Shannon信息指数平均值为0.649,变幅为0.109~1.110。(3)聚类分析显示,在遗传相似系数为0.73水平上,参试资源聚为三大类群,中国资源多聚在第Ⅰ类群下的第1、2、3亚群,越南资源多聚在第Ⅰ-4亚群,孟加拉资源多聚在第Ⅲ-3亚群。由此表明,中国资源遗传基础较为狭窄,而其他国家的恢复系具有较远的亲缘关系。 相似文献
7.
Changwei Shao Genbo Xu Lei Wang Xiaolin Liao Yongsheng Tian Songlin Chen 《Conservation Genetics》2009,10(3):717-719
Given the ecological and commercial importance of the summer flounder (Paralichthys dentatus), there is a surprising paucity of information on the molecular genetics of this species. Some studies published to date
are concentrated on the reproduction biology. To address this shortcoming, a microsatellite-enriched genomic DNA library of
P. dentatus was generated and screened by sequencing. Twelve dinucleotide microsatellite loci were characterized by genotyping 24 samples.
The observed number of alleles ranged from three to thirteen with an average of 8.25, while the effective number of alleles
ranged from 2.21 to 8.28 with an average of 5.06. The observed and expected heterozygosities ranged from 0.0833 to 0.9583
and from 0.5594 to 0.8980, respectively. Significant deviations from Hardy–Weinberg expectations were detected at three loci
and linkage disequilibrium between two loci was significant after applying Bonferroni correction. In cross-species amplification,
three species showed at least two polymorphic loci. The 12 highly polymorphic microsatellite markers represent a powerful
molecular tool, which will allow for detailed population genetic analyses on this important marine fish. 相似文献
8.
The first set of six polymorphic microsatellites was isolated from a partial genomic DNA library of an important marine food fish Gnathanodon specious, and was characterized in 28 unrelated individuals. The allele number ranged from three to 12 with an average of seven/locus; average expected heterozygosity was 0.57 ranging from 0.10 to 0.87, whereas the observed heterozygosity ranged from 0.11 to 0.96 (average: 0.57). All six markers conform to Hardy–Weinberg and linkage equilibria. These markers will be useful for accessing genetic population structure of wild populations and for selective breeding program in fish farms. 相似文献
9.
Half-smooth tongue sole (Cynoglossus semilaevis) is a commercially important marine fish species in China. A set of type I microsatellite markers were identified through
bioinformatic mining of the GenBank database. Thirteen of these markers showed polymorphisms through genotyping a sample of
30 individuals. A total of 47 alleles were detected, with an average of 3.6 alleles per locus. The number of alleles, observed
and expected heterozygosity per locus ranged from two to five, from 0.14 to 0.93 and from 0.27 to 0.77, respectively. Three
loci significantly deviated from Hardy-Weinberg equilibrium after Bonferroni correction (P < 0.0038) and no significant linkage disequilibrum between pairs of loci was found. The markers identified in this study
will contribute to construction of genetic linkage maps and mapping of quantitative trait loci (QTL) of C. semilaevis. 相似文献
10.
We developed eight polymorphic microsatellite markers from the Sachalin fir (Abies sachalinensis Masters). The number of alleles per locus ranged from eight to 31, with an average of 21.4. The observed and expected heterozygosities ranged from 0.656 to 0.937 and from 0.710 to 0.945, respectively. These markers will be available for population genetic studies and parentage analysis. 相似文献
11.
Seven single locus dinucleotide microsatellite markers were developed to characterize an economically important sport fish and food fish in Malaysia and in Southeast Asia. They were obtained by using a rapid method namely the 5' anchored PCR enrichment protocol. The specific primers were designed to flank the repeat sequences and these were subsequently used to characterize 120 unrelated fish from Malaysia and 30 fishes from Indonesia. The number of alleles per locus ranged from 2 (SYKVJ1-11) to 6 (SYKVJ1-4) while the levels of heterozygosity ranged from 0.0472 (SYKVJ1-11) to 0.7745 (SYKVJ1-2). 相似文献
12.
Seven single-locus dinucleotide microsatellite markers were developed to characterize an economically important sport fish
and food fish in Malaysia and in Southeast Asia. They were obtained by using a rapid method namely the 5′-anchored PCR enrichment
protocol. The specific primers were designed to flank the repeat sequences and these were subsequently used to characterize
120 unrelated fish from Malaysia and 30 fishes from Indonesia. The number of alleles per locus ranged from 2 (SYKVJ1-11) to
6 (SYKVJ1-4) while the levels of heterozygosity ranged from 0.0472 (SYKVJ1-11) to 0.7745 (SYKVJ1-2). 相似文献
13.
Qin Jiao Schmidt Bjorn Victor Cheng Fei Xie Songguang 《Zeitschrift fur angewandte Ichthyologie》2021,37(2):314-317
Genetic patterns observed among populations by neutral molecular markers is a major method used to reconstruct the invasion history of invasive species. The Shimofuri goby (Tridentiger bifasciatus) has invaded several lakes along the East Route of the South-to-North Water Transfer Project, China (ENST). However, neutral molecular markers for this goby are not currently available. In this study, fourteen novel polymorphic microsatellite loci were developed through next generation sequencing technology. These markers were also tested in an invasive population (Nansi Lake, a storage lake of ENST) consisting of 54 individuals. The average number of alleles per locus was 7.6 and ranged from 4 to 13. The average Ho was 0.587 and ranged from 0.404 to 0.852, and the average He was 0.733 and ranged from 0.564 to 0.851. The average PIC per locus was 0.689 and ranged from 0.521 to 0.824. Four markers (TB4, TB65, TB66 and TB26) were found to deviate from HWE after correction following the False Discovery Rate method. Null alleles were found in four loci (TB11, TB65, TB66 and TB26). These highly polymorphic microsatellite markers are useful for further study to reconstruct invasion history of Shimofuri goby. 相似文献
14.
Twelve single locus trinucleotide microsatellite markers were developed to characterize the Asian river catfish, Mystus nemurus, an important food fish in South East Asia. They were obtained by using a rapid method namely the 5' anchored PCR enrichment protocol. The specific primers were designed to flank the repeat sequences and these were subsequently used to characterize 90 unrelated fish from Malaysia. The number of alleles per locus ranged from 2 (MnVj2-281) to 12 (MnBp8-4-43b) while the levels of heterozygosity ranged from 0.0444 (MnVj2-1-19) to 0.7458 (MnVj2-291). 相似文献
15.
Maturity, oocyte dynamics and fecundity of the roundnose grenadier from the Rockall Trough 总被引:1,自引:0,他引:1
The reproductive biology of roundnose grenadier Coryphaenoides rupestris was investigated against a background of increasing commercial exploitation. Samples were taken from surveys carried out in Rockall Trough between 1993 and 1995. An eight-point maturity scale was developed based on both visual inspection of the ovaries and histological screening. The various stages of development of roundnose grenadier oocytes were described and the relative proportion of oocyte types and their respective size range in each maturity stage were investigated. The dynamic organization of the ovary indicated a determinate maturation cycle in this species. Population spawning appears to be prolonged, extending from July to at least November. However, data were insufficient to clarify individual spawning duration. The potential fecundity of 29 mature fish ranged from 11 083-55 175 (63-95 cm total length). The results were very similar to previous values from the North Atlantic. The reproductive strategy of the roundnose grenadier is discussed in the light of the current commercial exploitation of the Species. 相似文献
16.
Sumaira Farrakh Sana Liaqat Madiha Sadiq Naveeda Riaz Muhammad Fayyaz Farrakh Mehboob 《Archives Of Phytopathology And Plant Protection》2013,46(9):1036-1046
Stripe rust is one of the most devastating diseases, caused by Puccinia striiformis f. sp. tritici, affecting a huge amount of wheat crops worldwide. In this study, the genetic diversity of 16 National Uniform Wheat Yield Trial (NUWYT) candidate lines was evaluated by using 22 screened microsatellite markers. These lines were found resistant for stripe rust at adult plant stage. These wheat microsatellite markers identified a total of 38 alleles, with an average of 2.3 alleles per microsatellite locus. The number of alleles ranged from one to five alleles and the highest number of alleles were associated with B genome (25), as compared to D (11) and A (2) genomes. The allelic polymorphism index content (PIC) reflecting the gene diversity of these microsatellite markers ranged from 0.00 to 0.66, with an average of 0.27. The maximum PIC value of 0.66 was observed for xgwm 159-5B and 0.64 for xgwm 413-1B. The gene diversity ranged from 0.00 to 0.71, with an average of 0.30. The genetic similarity matrix was used to construct a dendrogram and the cluster analysis was performed by the use of unweighted pair-group method with arithmetic average algorithm. This divided the entire 16 candidate lines into three main clusters on the basis of their similarity. Our results indicate that the genetic diversity among the 16 candidate NUWYT lines was very narrow. 相似文献
17.
河北省绿子叶黑豆种质资源表现型和ISSR标记遗传多样性分析 总被引:2,自引:0,他引:2
为了揭示河北省绿子叶黑豆种质资源的遗传多样性,为其研究利用提供理论根据,以46份原产河北省的绿子叶黑豆种质资源为试验材料,对其基于表型性状及ISSR标记鉴定结果进行了聚类分析,结果表明:7个ISSR引物共检测出60个等位变异,平均每个位点有8.6个等位变异,变幅为5~17个;ISSR引物的多态性信息量PIC变幅为0.721~0.927,平均0.820;利用表型性状和ISSR标记数据进行品种间遗传多样性分析,遗传相似系数变化范围分别为0.07~0.53和0.43~1.00,平均为0.284和0.704,遗传相似性变幅较大,河北省不同绿子叶黑豆品种间存在着丰富的遗传多样性。聚类结果显示,类群与品种来源地有关。 相似文献
18.
Few time series of deep-sea systems exist from which the factors affecting abyssal fish populations can be evaluated. Previous analysis showed an increase in grenadier abundance, in the eastern North Pacific, which lagged epibenthic megafaunal abundance, mostly echinoderms, by 9–20 months. Subsequent diet studies suggested that carrion is the grenadier''s most important food. Our goal was to evaluate if changes in carrion supply might drive the temporal changes in grenadier abundance. We analyzed a unique 17 year time series of abyssal grenadier abundance and size, collected at Station M (4100 m, 220 km offshore of Pt. Conception, California), and reaffirmed the increase in abundance and also showed an increase in mean size resulting in a ∼6 fold change in grenadier biomass. We compared this data with abundance estimates for surface living nekton (pacific hake and jack mackerel) eaten by the grenadiers as carrion. A significant positive correlation between Pacific hake (but not jack mackerel) and grenadiers was found. Hake seasonally migrate to the waters offshore of California to spawn. They are the most abundant nekton species in the region and the target of the largest commercial fishery off the west coast. The correlation to grenadier abundance was strongest when using hake abundance metrics from the area within 100 nmi of Station M. No significant correlation between grenadier abundance and hake biomass for the entire California current region was found. Given the results and grenadier longevity, migration is likely responsible for the results and the location of hake spawning probably is more important than the size of the spawning stock in understanding the dynamics of abyssal grenadier populations. Our results suggest that some abyssal fishes'' population dynamics are controlled by the flux of large particles of carrion. Climate and fishing pressures affecting epipelagic fish stocks could readily modulate deep-sea fish dynamics. 相似文献
19.
Pareuchiloglanis sinensis (Siluriformes: Sisoridae) is an endemic and highland fish species which occurs only in some rivers of south-west China. In this study, the isolation and characterization of polymorphic microsatellite loci of this fish species by next-generation sequencing is described. A total of 9471 simple-sequence repeats (SSRs) were observed from RNA-seq data. One hundred and twenty primer pairs were chosen randomly and validated across 48 P. sinensis individuals collected from the Dadu river (a branch of the Yangtze river) of which 28 polymorphic microsatellite loci were detected. The number of alleles ranged from 2 to 14, with an average of seven alleles per locus. Twenty loci exhibited high polymorphism with the polymorphism information content (PIC) larger than 0.5. The mean observed and expected heterozygosity varied from 0.104 to 0.958 and 0.157 to 0.844, with an average of 0.583 and 0.613, respectively. The microsatellite markers characterized in the current study serve as a useful tool for the conversation genetic studies and population evaluation of P. sinensis. 相似文献
20.
The yellow catfish Pelteobagrus fulvidraco is a freshwater fish species. Due to overfishing and pollution of freshwater ecosystems, the wild stocks of this fish reduced
substantially. We isolated and characterized 12 polymorphic microsatellites of this species. The number of alleles at the
12 microsatellite loci ranged from four to eight, with an average of 6.6/locus. The average observed heterozygosity was 0.72,
whereas the expected heterozygosity ranged from 0.60 to 0.86 (average: 0.80). All 12 microsatellites conformed to Hardy–Weinberg
Equilibrium and were in linkage equilibrium. These 12 novel microsatellites could facilitate studies of genetic diversity
and population structure of the yellow catfish to supply necessary information of conservation of the yellow catfish. 相似文献