Mitochondrial DNA and Nuclear Microsatellite Diversity in Hatchery and Wild<i>Oncorhynchus mykiss</i>from Freshwater Habitats in Southern California

Nielsen, Jennifer L.; Carpanzano, Cindy; Fountain, Monique C.; Gan, Christine A.

doi:10.1577/1548-8659(1997)126<0397:mdanmd>2.3.co;2

Cited by 59 publications

(32 citation statements)

References 28 publications

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“…A geographically isolated population of rainbow trout in the Harney Basin, Oregon, exhibited three haplotypes-MYS1, MYS12, and MYS22-in 1, 2, and 14 individuals, respectively. Haplotype MYS12 has previously been reported in southern steelhead (Nielsen et al 1997) but was not observed in any other O. mykiss populations in our study. Haplotype MYS22 has not previously been reported for any rainbow trout or steelhead population and was unique to Harney Basin rainbow trout populations.…”

Section: Mitochondrial Dna Sequencingcontrasting

confidence: 52%

“…Using mtDNA sequencing of the highly variable 3Ј region of the D-loop in rainbow trout, Nielsen (1999) and Nielsen et al (1994aNielsen et al ( , 1994bNielsen et al ( , 1997 observed clinal variation in mitochondrial haplotypes, California having the greatest diversity. The lower variation in the northern populations probably resulted from a genetic bottleneck that occurred during the last glacial period 60,000-10,000 years ago.…”

Section: Please Scroll Down For Articlementioning

confidence: 99%

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Genetic Analysis of Interior Pacific Northwest Oncorhynchus mykiss Reveals Apparent Ancient Hybridization with Westslope Cutthroat Trout

Brown

Patton

Martin

et al. 2004

Transactions of the American Fisheries Society

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Seventeen populations of Oncorhynchus mykiss were analyzed for mitochondrial haplotype diversity through either polymerase chain reaction–restriction fragment length polymorphism analysis or mitochondrial DNA sequencing. Six new mitochondrial haplotypes were observed among these populations, five in steelhead and one in Harney Basin rainbow trout. Although no distinct patterns were observed between steelhead and rainbow trout with mitochondrial DNA sequencing, Harney Basin rainbow trout populations from southeastern Oregon exhibited a high frequency of a unique new haplotype designated MYS22. Fourteen of 17 individuals within the Harney Basin rainbow trout populations possessed this haplotype. Additionally, the mitochondrial DNA haplotypes of six westslope cutthroat trout O. clarki lewisi were observed among 90 steelhead from the Tucannon River, Washington, a river in which no native or introduced cutthroat trout have been documented. Analysis of other introduced hatchery and wild stocks of steelhead and rainbow trout from throughout the interior Pacific Northwest revealed only rainbow trout and steelhead mitochondrial haplotypes. Analysis of 90 wild Tucannon River steelhead using 16 nuclear DNA markers detected only one individual with a single nuclear allele consistent with westslope cutthroat trout, although the marker may be a rare rainbow trout or steelhead nuclear allele. This suggests that a hybridization event of ancient origin probably occurred within the Tucannon River basin. This hybridization event may have occurred between Tucannon River steelhead and a now extinct native population of westslope cutthroat trout that probably arrived as a result of late Wisconsin glacial outburst floods (Missoula Floods) occurring 19,000–10,000 years before the present.

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Section: Mitochondrial Dna Sequencingcontrasting

confidence: 52%

Section: Please Scroll Down For Articlementioning

confidence: 99%

Genetic Analysis of Interior Pacific Northwest Oncorhynchus mykiss Reveals Apparent Ancient Hybridization with Westslope Cutthroat Trout

Brown

Patton

Martin

et al. 2004

Transactions of the American Fisheries Society

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“…Nielsen et al (1997) found a decrease in genetic variation in fish populations isolated above dams. Substantial genetic differences were found in bull trout (Salvelinus confluentus) populations above and below the Cabinet George Dam (Neraas and Spruell 2001).…”

Section: Discussionmentioning

confidence: 98%

“…However, human habitat alterations such as dams have caused populations to become increasingly isolated within the last century. Although there are been many studies which indicate that barriers such as dams can affect the genetic makeup of populations (Nielsen et al 1997;Neraas and Spruell 2001) there have been no investigations into how this is affecting the acoustic repertoires of these populations.…”

Section: Introductionmentioning

confidence: 99%

Geographic variation in acoustic signaling in the guardian darter Etheostoma oophylax: effects of contemporary versus historical isolation

Noel

Johnston

2014

Environ Biol Fish

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Geographical variation in acoustic signals has been demonstrated in many taxa, including freshwater fishes. Previous studies have investigated variation in acoustic signaling between populations naturally isolated into separate drainages. However, the effect of manmade habitat modifications such as dams on the evolution of communication in fishes in unexplored. We used the guardian darter, Etheostoma oophylax to test for geographic divergence in acoustic signals in three streams in the Tennessee River Drainage. Panther and Sugar creeks were once linked by the Blood River but were isolated with the installment of the Kentucky Dam in 1930, while Anderson Creek was historically isolated from these two streams. This framework allowed us to test the effect of isolation on signal structure in these populations for both long and short timescales. We discovered significant variation in both the spectral and temporal components of E. oophylax vocalizations between sites isolated due to drainage locality, but not among sites isolated by the dam. We conclude that geographic isolation is contributing to signal divergence but it is likely that less than a century is not long enough of a timescale for signal divergence between Panther and Sugar Creek to become detectable.

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“…Hatchery populations of salmonids often carry lower levels of genetic variation than wild populations (e.g. Nielsen et al 1997). The enhanced variation in Alberta hatchery samples, however, may stem from several donor populations contributing to hatchery samples (e.g.…”

Section: Conservation Issues In Salmonidsmentioning

confidence: 99%

Microsatellite DNA analysis of rainbow trout (Oncorhynchus mykiss) from western Alberta, Canada: native status and evolutionary distinctiveness of “Athabasca” rainbow trout

Taylor¹,

Tamkee²,

Sterling

et al. 2006

Conserv Genet

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Molecular genetic assays can contribute to conservation of aquatic taxa by assessing evolutionary and taxonomic distinctiveness, levels of genetic variation within and between populations, and the degree of introgression with introduced taxa. The Athabasca River drainage of western Alberta, Canada is one of only three (and the largest) drainages flowing east of the continental divide that contain native populations of rainbow trout (Salmonidae: Oncorhynchus mykiss). The ''Athabasca'' rainbow trout has been considered a preglacial relict worthy of special conservation measures. In addition, the native range of Athabasca rainbow trout has seen many instances of introductions of non-native populations since the beginning of the 20th century. We assayed rainbow trout from the Athabasca River drainage, from hatchery populations, and from representative populations in adjacent regions (N = 49 localities) for variation at 10 microsatelite loci to assess the level of evolutionary distinctiveness of Athabasca rainbow trout, and to assess the levels of introgression with non-native hatchery fish. We found that native Athabasca rainbow trout did not form a distinctive genetic assemblage and that the greatest amount of allele frequency variation was attributable to contemporary drainage systems (29.3%) rather than by a Athabasca/non-Athabasca distinction (12.6%). We found that 78% of all fish were confidently assigned to a ''wild'' rather than a ''hatchery'' genetic grouping and that most of the inferred introgression with hatchery fish was restricted to a few localities (N = 6). Our results suggest that: (i) Athabasca River rainbow trout are likely postglacial immigrants from adjacent populations of the Fraser River, and (ii) that there is no evidence of widespread introgression of hatchery alleles into native Athabasca River drainage rainbow trout.

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Mitochondrial DNA and Nuclear Microsatellite Diversity in Hatchery and WildOncorhynchus mykissfrom Freshwater Habitats in Southern California

Cited by 59 publications

References 28 publications

Genetic Analysis of Interior Pacific Northwest Oncorhynchus mykiss Reveals Apparent Ancient Hybridization with Westslope Cutthroat Trout

Genetic Analysis of Interior Pacific Northwest Oncorhynchus mykiss Reveals Apparent Ancient Hybridization with Westslope Cutthroat Trout

Geographic variation in acoustic signaling in the guardian darter Etheostoma oophylax: effects of contemporary versus historical isolation

Microsatellite DNA analysis of rainbow trout (Oncorhynchus mykiss) from western Alberta, Canada: native status and evolutionary distinctiveness of “Athabasca” rainbow trout

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