Genetics approaches to determine population vital rates
Data Set (DS) | Southwest Fisheries Science Center (SWFSC)GUID: gov.noaa.nmfs.inport:18744 | Updated: October 17, 2023 | Published / External
Summary
Short Citation
Southwest Fisheries Science Center, 2024: Genetics approaches to determine population vital rates, https://www.fisheries.noaa.gov/inport/item/18744.
Full Citation Examples
This project addresses major gaps in knowledge on vital rates such as age to maturity, survival, sex ratios, and population size (including the males)whcih have made it difficult to conduct meaningful population and risk assessments. Although vital rates are difficult to observe directly, genetic analysis provides a practical approach to understand these processes. Understanding the proportion of males to females in any population has important consequences for population demographic studies. Using hatchling and maternal DNA fingerprints, one can deduce the paternal genotypes ? from one to many fathers per clutch. The resulting genotypes represent individual males that are actively breeding in the population. This means that males can effectively be sampled without ever having seen them or having to catch them in the field. The nesting population on St. Croix is an important US Index Population for leatherbacks that has been intensively monitored using a variety of Capture-Mark-Recapture (CMR) methods since 1981 (Dutton et al. 2005). Due to the richness and consistency of the demographic data, this population offers unique opportunities for research and development of tools & approaches for getting at vital rate parameters that are needed to improve stock assessments in sea turtles, as identified in the recent NRC Report (2010). These approaches can then be applied to other populations, e.g. the critically endangered Pacific leatherback. We have developed non-injurious in-situ techniques to mass sample large numbers of live hatchlings for genetic fingerprinting as part of a long term CMR experiment, and also demonstrated the feasibility of using hatchling genotyping and kinship analysis to determine the genotypes and number of breeding males in the population (Stewart & Dutton 2011). We have sampled a total of 17,087 hatchlings between 2009-2011 as part of this project, will continue field effort in 2012 toward the goal of a minimum sampling of 50,000 hatchlings over the next 2-4 years. At an appropriate time in the future, we will use high throughput genotyping methods currently being developed in the next 2-4 years to create a database of individual hatchling identifications (?genetic tags?) that will be compared to those first time nesters sampled annually into the future. This project will also genotype a subset of the samples collected in 2011 to assess males in two consecutive seasons for a more accurate census of the number of males in the breeding population and to determine the extent of male fidelity and breeding periodicity. Objectives include 1) mass-tagging of leatherback hatchlings for Capture-Mark-Recapture (CMR) studies to determine age at first reproduction and age-specific survival rates and 2) application of kinship approaches to reconstruct parental genotypes from mother-offspring comparison to census males, determine operational sex ratios (OSR) of the breeding population, reproductive success of males and mating system.
Distribution Information
-
PDF - Adobe Portable Document Format
Scientific publication
none
Child Items
No Child Items for this record.
Contact Information
Point of Contact
Peter H Dutton
peter.dutton@noaa.gov
(858) 546-5636
Metadata Contact
Peter H Dutton
peter.dutton@noaa.gov
(858) 546-5636
Extents
Pacific and Atlantic oceans
2010 - Present
Item Identification
Title: | Genetics approaches to determine population vital rates |
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Short Name: | Population Vital Rates |
Status: | In Work |
Creation Date: | 2014 |
Abstract: |
This project addresses major gaps in knowledge on vital rates such as age to maturity, survival, sex ratios, and population size (including the males)whcih have made it difficult to conduct meaningful population and risk assessments. Although vital rates are difficult to observe directly, genetic analysis provides a practical approach to understand these processes. Understanding the proportion of males to females in any population has important consequences for population demographic studies. Using hatchling and maternal DNA fingerprints, one can deduce the paternal genotypes ? from one to many fathers per clutch. The resulting genotypes represent individual males that are actively breeding in the population. This means that males can effectively be sampled without ever having seen them or having to catch them in the field. The nesting population on St. Croix is an important US Index Population for leatherbacks that has been intensively monitored using a variety of Capture-Mark-Recapture (CMR) methods since 1981 (Dutton et al. 2005). Due to the richness and consistency of the demographic data, this population offers unique opportunities for research and development of tools & approaches for getting at vital rate parameters that are needed to improve stock assessments in sea turtles, as identified in the recent NRC Report (2010). These approaches can then be applied to other populations, e.g. the critically endangered Pacific leatherback. We have developed non-injurious in-situ techniques to mass sample large numbers of live hatchlings for genetic fingerprinting as part of a long term CMR experiment, and also demonstrated the feasibility of using hatchling genotyping and kinship analysis to determine the genotypes and number of breeding males in the population (Stewart & Dutton 2011). We have sampled a total of 17,087 hatchlings between 2009-2011 as part of this project, will continue field effort in 2012 toward the goal of a minimum sampling of 50,000 hatchlings over the next 2-4 years. At an appropriate time in the future, we will use high throughput genotyping methods currently being developed in the next 2-4 years to create a database of individual hatchling identifications (?genetic tags?) that will be compared to those first time nesters sampled annually into the future. This project will also genotype a subset of the samples collected in 2011 to assess males in two consecutive seasons for a more accurate census of the number of males in the breeding population and to determine the extent of male fidelity and breeding periodicity. Objectives include 1) mass-tagging of leatherback hatchlings for Capture-Mark-Recapture (CMR) studies to determine age at first reproduction and age-specific survival rates and 2) application of kinship approaches to reconstruct parental genotypes from mother-offspring comparison to census males, determine operational sex ratios (OSR) of the breeding population, reproductive success of males and mating system. |
Purpose: |
This project addresses major gaps in knowledge on vital rates such as age to maturity, survival, sex ratios, and population size (including the males)whcih have made it difficult to conduct meaningful population and risk assessments. Although vital rates are difficult to observe directly, genetic analysis provides a practical approach to understand these processes. |
Keywords
Theme Keywords
Thesaurus | Keyword |
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UNCONTROLLED | |
None | leatherback genotypes |
Physical Location
Organization: | Southwest Fisheries Science Center |
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City: | La Jolla |
State/Province: | CA |
Country: | USA |
Data Set Information
Data Set Scope Code: | Data Set |
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Data Set Type: | Database |
Maintenance Frequency: | Continually |
Data Presentation Form: | Other |
Support Roles
Data Steward
Date Effective From: | 2016 |
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Date Effective To: | |
Contact (Person): | Dutton, Peter H |
Address: |
8901 La Jolla Shores Dr La Jolla, CA 92037 USA |
Email Address: | peter.dutton@noaa.gov |
Phone: | (858) 546-5636 |
Fax: | (858) 546-7003 |
Business Hours: | M-F 8:00 - 4:30 |
Distributor
Date Effective From: | 2016 |
---|---|
Date Effective To: | |
Contact (Organization): | Southwest Fisheries Science Center (SWFSC) |
Address: |
8901 La Jolla Shores Dr. La Jolla, CA 92037 USA |
Phone: | (858)546-7000 |
URL: | http://swfsc.noaa.gov/ |
Business Hours: | 8:00-16:30 |
Metadata Contact
Date Effective From: | 2013-01-01 |
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Date Effective To: | |
Contact (Person): | Dutton, Peter H |
Address: |
8901 La Jolla Shores Dr La Jolla, CA 92037 USA |
Email Address: | peter.dutton@noaa.gov |
Phone: | (858) 546-5636 |
Fax: | (858) 546-7003 |
Business Hours: | M-F 8:00 - 4:30 |
Contact Instructions: |
|
Originator
Date Effective From: | 2013-01-01 |
---|---|
Date Effective To: | |
Contact (Person): | Dutton, Peter H |
Address: |
8901 La Jolla Shores Dr La Jolla, CA 92037 USA |
Email Address: | peter.dutton@noaa.gov |
Phone: | (858) 546-5636 |
Fax: | (858) 546-7003 |
Business Hours: | M-F 8:00 - 4:30 |
Contact Instructions: |
|
Point of Contact
Date Effective From: | 2013-01-01 |
---|---|
Date Effective To: | |
Contact (Person): | Dutton, Peter H |
Address: |
8901 La Jolla Shores Dr La Jolla, CA 92037 USA |
Email Address: | peter.dutton@noaa.gov |
Phone: | (858) 546-5636 |
Fax: | (858) 546-7003 |
Business Hours: | M-F 8:00 - 4:30 |
Contact Instructions: |
|
Extents
Extent Group 1
Extent Group 1 / Geographic Area 1
Description |
Pacific and Atlantic oceans |
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Extent Group 1 / Time Frame 1
Time Frame Type: | Continuing |
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Start: | 2010 |
Access Information
Security Class: | Unclassified |
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Data Access Procedure: |
Contact PI |
Data Access Constraints: |
none |
Distribution Information
Distribution 1
Download URL: | https://swfsc.noaa.gov/mmtd |
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Distributor: | Southwest Fisheries Science Center (SWFSC) (2016 - Present) |
Description: |
Scientific publication |
File Type (Deprecated): | |
Distribution Format: | PDF - Adobe Portable Document Format |
Data Quality
Analytical Accuracy: |
Analysis results have Confidence Intervals associated |
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Quality Control Procedures Employed: |
Standard laboratory QA/QC procedures are performed. Standard Operating Procedure (SOP) documents are on file for various steps |
Data Management
Have Resources for Management of these Data Been Identified?: | No |
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Approximate Percentage of Budget for these Data Devoted to Data Management: | Unknown |
Do these Data Comply with the Data Access Directive?: | No |
Is Access to the Data Limited Based on an Approved Waiver?: | No |
Approximate Delay Between Data Collection and Dissemination: | 1 yr |
Actual or Planned Long-Term Data Archive Location: | Other |
If World Data Center or Other, Specify: | SWFSC |
Approximate Delay Between Data Collection and Archiving: | 4 weeks |
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?: |
Stored in a secure server. |
Lineage
Lineage Statement: |
All steps from sample collection, DNA extraction and genetic analysis are tracked and standard QA protocols are followed. Standard Operating Procedure documents are on file |
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Acquisition Information
Instruments
Instrument 1
Identifier: | ABI Genetic Sequencer |
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Instrument / Gear: | Instrument |
Instrument Type: | ABI Genetic Sequencer |
Description: |
ABI Genetic Sequencer |
Platforms
Platform Unavailable Reason: | Not Applicable |
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Catalog Details
Catalog Item ID: | 18744 |
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GUID: | gov.noaa.nmfs.inport:18744 |
Metadata Record Created By: | Dan L Prosperi |
Metadata Record Created: | 2013-04-18 18:51+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-10-17 16:12+0000 |
Metadata Record Published: | 2019-06-18 |
Owner Org: | SWFSC |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2019-06-18 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2020-06-18 |