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You searched for: Author "Hansen, Michael M." Remove constraint Author: "Hansen, Michael M." Subject rivers Remove constraint Subject: rivers Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
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1. Brown trout (salmo trutta) stocking impact assessment using microsatellite dna markers

Author:
Hansen, Michael M.,   et al.   ; Ruzzante, Daniel E.; Nielsen, Einar E.; Mensberg, Karen-Lise D.;     Show all 4 Authors
Source:
Ecological applications 2001 v.11 no.1 pp. 148-160
ISSN:
1051-0761
Subject:
Salmo trutta; age structure; alleles; extinction; fish communities; gene pool; genetic markers; genetic relationships; genetic stability; genetic variation; hatcheries; introgression; loci; microsatellite repeats; monitoring; rivers; trout
Abstract:
... The genetic integrity of many salmonid fish populations is threatened by stocking of domesticated conspecifics. The purpose of this study was to assess the utility of microsatellite DNA markers for detecting loss of genetic diversity in hatchery strains, for estimating their genetic relationships, and for monitoring the genetic impact of stocking activity on wild populations of salmonid fishes. Br ...

2. Genetic structure and demographic history of brown trout (Salmo trutta) populations from the southern Balkans

Author:
HANSEN, MICHAEL M.,   et al.   ; APOSTOLIDIS, APOSTOLOS P.; MADEIRA, MARIA-JOSE; MACHORDOM, ANNIE;     Show all 4 Authors
Source:
Freshwater biology 2008 v.53 no.8 pp. 1555-1566
ISSN:
0046-5070
Subject:
Salmo trutta; biodiversity; gene pool; genetic variation; hybrids; immigration; introgression; microsatellite repeats; mitochondrial DNA; rivers; trout; Balkans
Abstract:
... 1. The present study was designed to characterize the genetic structure of brown trout (Salmo trutta) populations from the southern Balkans and to assess the spread of non-native strains and their introgression into native trout gene pools. We analysed polymorphism at nine microsatellite loci in seven supposedly non-admixed and three stocked brown trout populations. 2. The analyses confirmed the a ...
DOI:
10.1111/j.1365-2427.2008.01988.x

3. Human effects on ecological connectivity in aquatic ecosystems: Integrating scientific approaches to support management and mitigation

Author:
Hansen, Michael M.,   et al.   ; Crook, David A.; Lowe, Winsor H.; Allendorf, Frederick W.; Erős, Tibor; Finn, Debra S.; Gillanders, Bronwyn M.; Hadwen, Wade L.; Harrod, Chris; Hermoso, Virgilio; Jennings, Simon; Kilada, Raouf W.; Nagelkerken, Ivan; Page, Timothy J.; Riginos, Cynthia; Fry, Brian; Hughes, Jane M.;     Show all 17 Authors
Source:
The Science of the total environment 2015 v.534 pp. 52-64
ISSN:
0048-9697
Subject:
analytical methods; anthropogenic activities; aquatic ecosystems; aquatic organisms; biodiversity; case studies; climate change; dams (hydrology); environmental impact; habitat destruction; humans; models; phenotypic plasticity; population structure; rivers
Abstract:
... Understanding the drivers and implications of anthropogenic disturbance of ecological connectivity is a key concern for the conservation of biodiversity and ecosystem processes. Here, we review human activities that affect the movements and dispersal of aquatic organisms, including damming of rivers, river regulation, habitat loss and alteration, human-assisted dispersal of organisms and climate c ...
DOI:
10.1016/j.scitotenv.2015.04.034

4. Long‐term effective population sizes, temporal stability of genetic composition and potential for local adaptation in anadromous brown trout (Salmo trutta) populations

Author:
Hansen, Michael M.,   et al.   ; Ruzzante, Daniel E.; Nielsen, Einar E.; Bekkevold, Dorte; Mensberg, Karen‐Lise D.;     Show all 5 Authors
Source:
Molecular ecology 2002 v.11 no.12 pp. 2523-2535
ISSN:
0962-1083
Subject:
microsatellite repeats; Salmo trutta; rivers; analysis of variance; genetic distance; models; gene flow; genetic stability; genetic drift; genetic techniques and protocols; genetic variation; population size; genetic relationships; Denmark
Abstract:
... We examined the long‐term temporal (1910s to 1990s) genetic variation at eight microsatellite DNA loci in brown trout (Salmo trutta L) collected from five anadromous populations in Denmark to assess the long‐term stability of genetic composition and to estimate effective population sizes (Ne). Contemporary and historical samples consisted of tissue and archived scales, respectively. Pairwise θST e ...
DOI:
10.1046/j.1365-294X.2002.01634.x

5. Performance of farmed, hybrid, and wild Atlantic salmon (Salmo salar) families in a natural river environment

Author:
Hansen, Michael M.,   et al.   ; Skaala, Øystein; Glover, Kevin A.; Barlaup, Bjørn T.; Svåsand, Terje; Besnier, Francois; Borgstrøm, Reidar;     Show all 7 Authors
Source:
Canadian journal of fisheries and aquatic sciences 2012 v.69 no.12 pp. 1994-2006
ISSN:
1205-7533
Subject:
Salmo salar; crossing; diet; eggs; farmed fish; farms; genetic markers; hybrids; parents; progeny; rivers; salmon; smolts; wild fish; Norway
Abstract:
... Survival, growth, and diet were compared for farmed, hybrid, and wild Atlantic salmon (Salmo salar) families from the eyed egg to the smolt stage in River Guddalselva, Hardangerfjord, Norway. All individuals that survived until the smolt stage were captured in a Wolf trap and identified to one of the 69 experimental families using microsatellite markers. Survival of farmed salmon progeny was signi ...
DOI:
10.1139/f2012-118

6. Population and family structure of brown trout, Salmo trutta, in a Mediterranean stream

Author:
Hansen, Michael M.,   et al.   ; Vera, Manuel; Sanz, Nuria; Almodóvar, Ana; García-Marín, José-Luis;     Show all 5 Authors
Source:
Marine & freshwater research 2010 v.61 no.6 pp. 676-685
ISSN:
1323-1650
Subject:
Salmo trutta; adults; basins; family structure; genetic variation; microsatellite repeats; population structure; rivers; spawning; streams; trout
Abstract:
... The physical arrangement of closely related individuals is expected to significantly influence the pattern of population genetic structure. For example, if related individuals are non-randomly distributed and included in samples, this may lead to exaggerated conclusions about genetic differentiation. In the present study, we compared population structure v. family relationships of brown trout (Sal ...
DOI:
10.1071/MF09098

7. Sixty years of anthropogenic pressure: a spatio-temporal genetic analysis of brown trout populations subject to stocking and population declines

Author:
Hansen, Michael M.,   et al.   ; Fraser, Dylan J.; Meier, Kristian; Mensberg, Karen-Lise D.;     Show all 4 Authors
Source:
Molecular ecology 2009 v.18 no.12 pp. 2549-2562
ISSN:
0962-1083
Subject:
Salmo trutta; adverse effects; genetic techniques and protocols; habitats; hatcheries; humans; introgression; microsatellite repeats; population dynamics; population size; rivers; trout; Denmark
Abstract:
... Analyses of historical samples can provide invaluable information on changes to the genetic composition of natural populations resulting from human activities. Here, we analyse 21 microsatellite loci in historical (archived scales from 1927 to 1956) and contemporary samples of brown trout (Salmo trutta) from six neighbouring rivers in Denmark, to compare the genetic structure of wild populations b ...
DOI:
10.1111/j.1365-294X.2009.04198.x
PubMed:
19457206

8. Spatial and temporal genetic differentiation and effective population size of brown trout (Salmo trutta, L.) in small Danish rivers

Author:
Hansen, Michael M.,   et al.   ; Jensen, Lasse F.; Carlsson, Jens; Loeschcke, Volker; Mensberg, Karen-Lise D.;     Show all 5 Authors
Source:
Conservation genetics 2005 v.6 no.4 pp. 615-621
ISSN:
1566-0621
Subject:
Salmo trutta; gene flow; genetic variation; immigration; lakes; microsatellite repeats; models; pollution; population size; rivers; trout; variance; Denmark
Abstract:
... The spatial and temporal genetic structure of brown trout populations from three small tributaries of Lake Hald, Denmark, was studied using analysis of variation at eight microsatellite loci. From two of the populations temporal samples were available, separated by up to 13 years (3.7 generations). Significant genetic differentiation was observed among all samples, however, hierarchical analysis o ...
DOI:
10.1007/s10592-005-9014-8

9. The impact of selection, gene flow and demographic history on heterogeneous genomic divergence: three‐spine sticklebacks in divergent environments

Author:
Hansen, Michael M.,   et al.   ; Ferchaud, Anne‐Laure;     Show all 2 Author
Source:
Molecular ecology 2016 v.25 no.1 pp. 238-259
ISSN:
0962-1083
Subject:
Gasterosteus aculeatus; coasts; fish; freshwater; gene flow; gene frequency; genes; lakes; morphs; parallel evolution; population dynamics; predators; rivers; single nucleotide polymorphism; Baltic Sea; Denmark; North Sea
Abstract:
... Heterogeneous genomic divergence between populations may reflect selection, but should also be seen in conjunction with gene flow and drift, particularly population bottlenecks. Marine and freshwater three‐spine stickleback (Gasterosteus aculeatus) populations often exhibit different lateral armour plate morphs. Moreover, strikingly parallel genomic footprints across different marine–freshwater po ...
DOI:
10.1111/mec.13399