Short Citation:
Alaska Fisheries Science Center, 2021: AFSC/ABL: 1996 Brood year Steelhead growth and early life-history transitions, https://www.fisheries.noaa.gov/inport/item/17262.

Item Identification

Title: AFSC/ABL: 1996 Brood year Steelhead growth and early life-history transitions
Short Name: AFSC/ABL: 1996 Brood year Steelhead growth and early life-history transitions
Status: Completed
Publication Date: 2004-12-01
Abstract:

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.

Purpose:

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.

Notes:

Loaded by batch 3878, 12-18-2012 18:12

Keywords

Theme Keywords

Thesaurus Keyword
UNCONTROLLED
ISO 19115 Topic Categories 002
ISO 19115 Topic Categories Biota
None growth
None heritability
None maturation
None Oncorhynchus mykiss
None precocious
None smolting
None steelhead

Spatial Keywords

Thesaurus Keyword
UNCONTROLLED
Geographic Names Information System AK
Geographic Names Information System Alaska
Geographic Names Information System Little Port Walter

Physical Location

Organization: Auke Bay Laboratories
City: Juneau
State/Province: AK
Country: US

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: MS Excel Spreadsheet
Maintenance Frequency: None Planned
Data Presentation Form: Document (digital)

Support Roles

Data Steward

CC ID: 231548
Date Effective From: 2015-10-08
Date Effective To:
Contact (Person): Gray, Andrew
Email Address: andrew.gray@noaa.gov

Distributor

CC ID: 231549
Date Effective From: 2015-10-08
Date Effective To:
Contact (Person): Gray, Andrew
Email Address: andrew.gray@noaa.gov

Metadata Contact

CC ID: 82012
Date Effective From: 2012-12-18
Date Effective To:
Contact (Person): MC, Metadata Coordinators
Email Address: AFSC.metadata@noaa.gov

Originator

CC ID: 81892
Date Effective From: 2012-12-18
Date Effective To:
Contact (Person): Gray, Andrew
Email Address: andrew.gray@noaa.gov

Point of Contact

CC ID: 81893
Date Effective From: 2012-12-18
Date Effective To:
Contact (Person): Gray, Andrew
Email Address: andrew.gray@noaa.gov

Extents

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 81891
W° Bound: -134.6433
E° Bound: -134.6433
N° Bound: 56.38417
S° Bound: 56.38417
Description

Little Port Walter, Alaska

Extent Group 1 / Time Frame 1

CC ID: 81890
Time Frame Type: Range
Start: 1996
End: 1998

Access Information

Security Class: Unclassified
Data Access Procedure:

N/A

Data 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.

Data 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.

Distribution Information

Distribution 1

CC ID: 233612
Download URL: https://noaa-fisheries-afsc.data.socrata.com/dataset/AFSC-ABL-1996-Brood-year-Steelhead-growth-and-earl/7ga7-pdb4/data
Distributor:
Description:

NCEI to be determined

Technical Environment

Description:

Microsoft Excel spreadsheet

Data Quality

Completeness Report:

None

Quality Control Procedures Employed:

Contact the dataset POC for full QA/QC methodology

Data Management

Have Resources for Management of these Data Been Identified?: Yes
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: No
If Distributor (Data Hosting Service) is Needed, Please Indicate: yes
Approximate Delay Between Data Collection and Dissemination: unknown
If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed:

no delay

Actual or Planned Long-Term Data Archive Location: To Be Determined
If To Be Determined, Unable to Archive, or No Archiving Intended, Explain:

NCEI cite yet to be determined

Approximate Delay Between Data Collection and Archiving: unknown
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption.

Lineage

Lineage Statement:

Contact the dataset POC for full methodology

Catalog Details

Catalog Item ID: 17262
Metadata Record Created By: SysAdmin InPortAdmin
Metadata Record Created: 2012-12-18 18:12+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-12-02 21:19+0000
Metadata Record Published: 2016-05-03
Owner Org: AFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2017-05-04