A triose-phosphate isomerase polymorphism in the Atlantic salmonSalmo salar L.

Wilson, Iain F.; Bourke, Elizabeth A.; Cross, T.

doi:10.1007/bf00554555

Cited by 9 publications

(7 citation statements)

References 11 publications

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“…However, the possibility of finding loci with higher values of diagnosis appears more feasible using microsatellites rather than allozymes. Although two protocols have been recently adapted to analyse new allozyme loci (Verspoor & Jordan, 1994;Wilson et a!., 1995), it is apparent that a greater number of new allozyme loci will not be available for analysis in the short-term. In contrast, the total number of (dG-dT) microsatellites in the salmon haploid genome has been estimated to be 6.3 x (Slettan et a!., 1993) and other microsatellites with different repeat motifs or isolated from other related species may also be useful for salmon studies (Estoup et al, 1993, Presa et a!., 1994.…”

Section: Discussionmentioning

confidence: 99%

Protein and microsatellite single locus variability in Salmo salar L. (Atlantic salmon)

et al. 1996

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We describe genetic variation at three microsatellite single loci and six allozyme loci of seven natural Atlantic salmon populations from Ireland and Spain. A comparison of genetic variability detected at both types of loci is performed. Also, the relative value of microsatellite single locus variability with regard to the identification of individual salmon populations is assessed. Microsatellite loci are shown to display higher levels of variation than allozyme loci.Mean number of alleles (6 1.53) and heterozygosity (0.46 0.04) at microsatellite loci are greater than those found for allozymes (1.85±0.05 and 0.21±0.03, respectively), and some microsatellite alleles appear to be specific for a location or geographical area. Allozyme and microsatellite variation show the same pattern of differentiation between populations with Irish and Spanish populations grouped into different clusters. However, greater values of genetic distance were found among microsatellite (D = 0.0747±0.011) rather than among allozyme loci (D = 0.0449 0.008). These results provide evidence that microsatellite-based analysis of genetic variation will be useful in the identification of individual populations of Atlantic salmon.

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Section: Discussionmentioning

confidence: 99%

Protein and microsatellite single locus variability in Salmo salar L. (Atlantic salmon)

et al. 1996

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“…Finding new alleles and/or adding new variable loci might well increase the reliability of the analysis in the Baltic Sea as was found in chum salmon, where the number of loci rose from 7 to 22 (Shaklee et al, 1990b). Additional variation in Atlantic salmon has been reported for ADH*, GPI-B1,2*, GPI-A3*, G3PDH-2*, SOD* and TPI-3* loci (Jordan et al, 1992;Skaala & Jörstad, 1994;Wilson et al, 1995). Direct DNA methods, mtDNA, and mini-and microsatellite techniques offer considerable potential for increasing the discrimination power of the analysis (Beacham et al, 1995;Galvin et al, 1995;O'Connell et al, 1995) and are unexplored as yet in Baltic salmon.…”

Section: Usefulness and Future Prospectsmentioning

confidence: 99%

Assessing seasonal changes in stock composition of Atlantic salmon catches in the Baltic Sea with genetic stock identification

Koljonen¹,

McKinnell

1996

Journal of Fish Biology

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The feasibility of using genetic stock identification to analyse seasonal changes in stock compositions of Atlantic salmon catches in the Baltic Sea was examined. The analysis employed seven variable allozyme loci from most of the potentially contributing stocks (16) from Finland and Sweden. Catch samples were collected from Finnish salmon fisheries in the eastern Bothnian Sea during the 1992 fishing season. Simulation studies were used to evaluate the feasibility of identifying Baltic salmon stocks with allozyme data. Special attention was paid to analysing the wild production of salmon stocks. Clear seasonal differences in stock composition were found. The estimates were compared with smolt production and Carlin-tag data. The proportions of the Neva and Oulujoki river stocks could be estimated as individual stocks, whereas the contributions of the remaining stocks were estimated as four composite stock groups. One of the groups consisted of wild stocks from the rivers Kalixälven and Simojoki. Identification of this group, which could be used as an index of wild production in the catches, requires catch sample sizes >300 salmon if <15% error is required. 1996 The Fisheries Society of the British Isles

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“…Parents in the crosses used to confirm the Mendelian inheritance of variation at TPI3* (Wilson et al, 1995) were invariant at EST5* and neither parental eye nor brain tissue was available so that the variation at FBALD3* could not be investigated further. However, genotype frequencies at these two loci in the four index samples conformed to Hardy-Weinberg expectations.…”

Section: Discussionmentioning

confidence: 99%

Genetic variation at traditional and novel allozyme loci, applied to interactions between wild and reared Salmo salar L. (Atlantic salmon)

1995

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This study aimed to increase the number of allozyme loci which may be screened in the Atlantic salmon, Salmo salar L, particularly for use in investigating interactions between wild populations and reared strains. Three samples of wild salmon from Ireland, Scotland and Spain and one from a farmed strain of Norwegian origin were used as index samples. Other Irish samples were used in technique development. Ninety-one enzyme loci were resolved, including 21 not previously screened in S. salar. Thirteen loci were found to be variable, including three novel polymorphic loci (EST5*, FBALD3* and TPI3*). Two novel alleles (sAAT1,2*13O and sAAT3*83) were also detected. Levels of variability were lowest in the Spanish sample. The farmed strain had levels of H and P lower than those in the two other wild samples. Mean levels of H and P were higher than those reported previously in studies that used a smaller number of loci but confirm S. salar as one of the less variable salmonids. Nine of the 13 variable loci showed significant population differentiation, the most discriminatory being mMEP2*. The discriminatory power of the novel variable loci was in the middle of the range of those of the other loci. D values reflected the relative geographical locations from which the samples originated. There were significant dines in allele frequencies at mMEP2* and TPI3*. Fourteen enzyme loci including six variable loci were resolved in adipose fin.

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A triose-phosphate isomerase polymorphism in the Atlantic salmonSalmo salar L.

Cited by 9 publications

References 11 publications

Protein and microsatellite single locus variability in Salmo salar L. (Atlantic salmon)

Protein and microsatellite single locus variability in Salmo salar L. (Atlantic salmon)

Assessing seasonal changes in stock composition of Atlantic salmon catches in the Baltic Sea with genetic stock identification

Genetic variation at traditional and novel allozyme loci, applied to interactions between wild and reared Salmo salar L. (Atlantic salmon)

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