Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Thomas A. Friesen"'
Publikováno v:
North American Journal of Fisheries Management.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::094a058448b29004574abb88c76e5d77
https://doi.org/10.1002/nafm.10891
https://doi.org/10.1002/nafm.10891
Publikováno v:
Conservation Genetics. 22:111-124
First recognized as threatened with extinction in 1999, native winter steelhead Oncorhynchus mykiss from Oregon’s Upper Willamette River (UWR) declined to a record-low 543 adult fish in 2017. This anadromous species has been seriously affected by h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d97edeb26ad1296838b7a622254da22
https://doi.org/10.1007/s10592-020-01322-1
https://doi.org/10.1007/s10592-020-01322-1
Autor:
Ryan B. Couture, Thomas P. Quinn, David L. G. Noakes, Andrew H. Dittman, Darran May, Thomas A. Friesen, Craig R. Banner, Marc A. Johnson, Carl B. Schreck
Publikováno v:
Fisheries Research. 220:105350
Induced triploidy typically causes sterility in teleost fishes, and has therefore been proposed as a tool to manage genetic risks that farmed and hatchery-produced salmon pose to wild populations. Application of this technology for aquaculture has be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac616367c6a785e69e7472f693be45fa
https://doi.org/10.1016/j.fishres.2019.105350
https://doi.org/10.1016/j.fishres.2019.105350
Publikováno v:
Transactions of the American Fisheries Society. 144:891-902
We assessed infection prevalence and intensity by the ectoparasitic copepod Salmincola californiensis among salmonid species rearing in reservoirs and streams upstream of reservoirs in the Willamette River basin, Oregon, during 2012 and 2013. Infecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84aac57fd9802860a9c454e49c296bfc
https://doi.org/10.1080/00028487.2015.1052558
https://doi.org/10.1080/00028487.2015.1052558
Autor:
Thomas A. Friesen, Maureen A. Hess, James M. Myers, Donald M. Van Doornik, Marc A. Johnson, David J. Teel
Publikováno v:
Transactions of the American Fisheries Society. 144:150-162
Conservation genetics studies are frequently conducted on Pacific salmon Oncorhynchus spp. to delineate their population structure and to quantify their genetic diversity, especially for populations that have experienced declines in abundance and are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3f2c4194b3c85001bb5d46266558520
https://doi.org/10.1080/00028487.2014.982178
https://doi.org/10.1080/00028487.2014.982178
Autor:
Marc A. Johnson, Thomas A. Friesen
Publikováno v:
North American Journal of Fisheries Management. 34:853-862
Effective management of Pacific salmon requires an accurate understanding of both population genetic diversity and structure. Spring Chinook Salmon Oncorhynchus tshawytscha from the upper Willamette River (UWR), Oregon, are listed as threatened under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::afd3aab4965fd9f3c3f8279df0426fa9
https://doi.org/10.1080/02755947.2014.920739
https://doi.org/10.1080/02755947.2014.920739
Age at Maturity, Fork Length, and Sex Ratio of Upper Willamette River Hatchery Spring Chinook Salmon
Autor:
Thomas A. Friesen, Marc A. Johnson
Publikováno v:
North American Journal of Fisheries Management. 33:318-328
We used data from 17 brood years of coded-wire-tagged hatchery spring Chinook Salmon Oncorhynchus tshawytscha from the upper Willamette River to test for changes in mean age at maturity, fork length, and sex ratio. We found only limited evidence for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23502b6cc15d3fba1c641ab474e1daf8
https://doi.org/10.1080/02755947.2012.760503
https://doi.org/10.1080/02755947.2012.760503
Publikováno v:
Reviews in Fisheries Science. 19:305-315
As a popular sportfish, smallmouth bass (Micropterus dolomieu) generates considerable angling opportunities with benefits to local economies even outside of their native range. Smallmouth bass was first introduced to the Pacific Northwest region of N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbd10349c78061f964958b91d5ed7d25
https://doi.org/10.1080/10641262.2011.598584
https://doi.org/10.1080/10641262.2011.598584
Publikováno v:
Transactions of the American Fisheries Society. 138:211-217
We used genetic identification methods to examine the stock composition of subyearling Chinook salmon Oncorhynchus tshawytscha in floodplain wetland and main-stem habitats of the lower Willamette River, Oregon. Using a microsatellite DNA baseline of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5750a273deb30863846f83c8fc483d3b
https://doi.org/10.1577/t08-084.1
https://doi.org/10.1577/t08-084.1
Publikováno v:
Northwest Science. 81:173-190
We used direct sampling and radio telemetry to describe the outmigration of juvenile Chinook salmon (Oncorhynchus tshawytscha) in the lower Willamette River downstream of Willamette Falls from 2000 to 2003. Juvenile Chinook salmon were present all ye
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39acb66423b0c00f202204e4c6f2ffa7
https://doi.org/10.3955/0029-344x-81.3.173
https://doi.org/10.3955/0029-344x-81.3.173