gov.noaa.nmfs.inport:17262
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Alaska Fisheries Science Center
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MC, Metadata Coordinators
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pointOfContact
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
AFSC/ABL: 1996 Brood year Steelhead growth and early life-history transitions
AFSC/ABL: 1996 Brood year Steelhead growth and early life-history transitions
2004-12-01
publication
NOAA/NMFS/EDM
17262
https://www.fisheries.noaa.gov/inport/item/17262
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Gray, Andrew
andrew.gray@noaa.gov
originator
documentDigital
Heritabilities of growth, precocious maturation and smolting were measured in 75 families of juvenile steelhead or rainbow trout Oncorhynchus mykiss, progeny of within and between line matings (crosses) of wild, anadromous steelhead and wild, resident (lake) rainbow trout originally derived from the same anadromous stock 70 years earlier. The tagged yearling progeny were combined by line in common freshwater rearing containers and graded into three categories: mature, smolt or rearing (undifferentiated) at age 2 years. Heritabilities of precocious male maturity, smolting and growth were moderate to high, and the genetic correlation between growth and smolting was low. Smolting and precocious male maturity were highly variable among families within lines and significantly different between lines. Each of the four lines produced significant numbers of smolts at age two. Smolting and maturation were negatively genetically correlated, which may explain the persistence of smolting in the lake population despite strong selection against lake smolts; balancing selection on male maturation age may help to maintain variation for smolting. The high heritability of smolting, coupled with the inability of smolts that leave the lake to return to it indicates that the genetic potential for smolting can lie dormant or be maintained through a dynamic interaction between smolting and early maturation for decades despite complete selection against the phenotype. The results have significant implications for the preservation of threatened anadromous stocks in fresh water and the inclusion of resident fish of formerly anadromous populations, currently trapped behind long-standing barriers to migration, as one component of the same population.
This dataset contains information for each fish including paretal cross type, lifestage at age 2, length and weight, and growth rates. The results have significant implications for the preservation of threatened anadromous stocks in fresh water and the inclusion of resident fish of formerly anadromous populations, currently trapped behind long-standing barriers to migration, as one component of the same population.
completed
Gray, Andrew
andrew.gray@noaa.gov
pointOfContact
Gray, Andrew
andrew.gray@noaa.gov
custodian
notPlanned
AK
Alaska
Little Port Walter
place
Geographic Names Information System
Oncorhynchus mykiss
growth
heritability
maturation
precocious
smolting
steelhead
theme
DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2017-04-24
publication
8.5
Auke Bay Laboratories
project
InPort
otherRestrictions
Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/ABL: 1996 Brood year Steelhead growth and early life-history transitions [Data Date Range], https://www.fisheries.noaa.gov/inport/item/17262.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
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Access Constraints: Contact the Point of Contact for data request form. The Data set is still being analyzed and will not be available for distribution until it has been finalized and all QA/QC practices have been performed. Contact the Data Point of Contact for estimated time of release.
otherRestrictions
Use Constraints: User must read and fully comprehend the metadata prior to use. Data should not be used beyond the limits of the source scale. Acknowledgement of NOAA, as the source from which these data were obtained, in any publications and/or other representations of these data is suggested.
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
17262
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/17262.pdf
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NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
eng; US
biota
Microsoft Excel spreadsheet
-134.6433
-134.6333
56.38417
56.39417
Little Port Walter, Alaska
1996
1998
Gray, Andrew
andrew.gray@noaa.gov
distributor
https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/ABL/1996%20Brood%20year%20Steelhead%20growth%20and%20early%20life-history%20transitions_ID_17262.csv
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https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/ABL/1996%20Brood%20year%20Steelhead%20growth%20and%20early%20life-history%20transitions_ID_17262.csv
NCEI to be determined
Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/14/2021. Contact: Daniel.woodrich@noaa.gov
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