Genomic and fitness consequences of a near-extinction event in the northern elephant seal

Hoffman, Joseph I.; Vendrami, David L. J.; Hench, Kosmas; Chen, Rebecca S.; Stoffel, Martin A.; Kardos, Marty; Amos, William; Kalinowski, Jörn; Rickert, Daniel; Köhrer, Karl; Wachtmeister, Thorsten; Goebel, Mike E.; Bonin, Carolina A.; Gulland, Frances M. D.; Dasmahapatra, Kanchon K.

doi:10.1038/s41559-024-02533-2

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Genomic and fitness consequences of a near-extinction event in the northern elephant seal

2024
By Hoffman, Joseph I. ; Vendrami, David L. J. ; Hench, Kosmas ; ...
Source: Nature Ecology & Evolution, 8(12), 2309-2324

[PDF-9.28 MB]

Select the Download button to view the document

This document is over 5mb in size and cannot be previewed

Details You May Also Like

Details:

Journal Title:

Nature Ecology & Evolution
Personal Author:

Hoffman, Joseph I. ; Vendrami, David L. J. ; Hench, Kosmas ; Chen, Rebecca S. ; Stoffel, Martin A. ; ... More +

Hoffman, Joseph I. ; Vendrami, David L. J. ; Hench, Kosmas ; Chen, Rebecca S. ; Stoffel, Martin A. ; Kardos, Marty ; Amos, William ; Kalinowski, Jörn ; Rickert, Daniel ; Köhrer, Karl ; Wachtmeister, Thorsten ; Goebel, Mike E. ; Bonin, Carolina A. ; Gulland, Frances M. D. ; Dasmahapatra, Kanchon K. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center) Less -
Description:

Understanding the genetic and fitness consequences of anthropogenic bottlenecks is crucial for biodiversity conservation. However, studies of bottlenecked populations combining genomic approaches with fitness data are rare. Theory predicts that severe bottlenecks deplete genetic diversity, exacerbate inbreeding depression and decrease population viability. However, actual outcomes are complex and depend on how a species’ unique demography affects its genetic load. We used population genetic and veterinary pathology data, demographic modelling, whole-genome resequencing and forward genetic simulations to investigate the genomic and fitness consequences of a near-extinction event in the northern elephant seal. We found no evidence of inbreeding depression within the contemporary population for key fitness components, including body mass, blubber thickness and susceptibility to parasites and disease. However, we detected a genomic signature of a recent extreme bottleneck (effective population size = 6; 95% confidence interval = 5.0–7.5) that will have purged much of the genetic load, potentially leading to the lack of observed inbreeding depression in our study. Our results further suggest that deleterious genetic variation strongly impacted the post-bottleneck population dynamics of the northern elephant seal. Our study provides comprehensive empirical insights into the intricate dynamics underlying species-specific responses to anthropogenic bottlenecks.
Source:

Nature Ecology & Evolution, 8(12), 2309-2324
DOI:

https://doi.org/10.1038/s41559-024-02533-2
ISSN:

2397-334X
Format:

PDF
Publisher:

Springer Science and Business Media LLC
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha-512:db2ca64291b1b2825968766018dd8efa701c334e61c85d0ce9c8cbd01d5bbc2db09aa2eac79f5c6e71c5b2cab6f757f930a1f5d032317b8c0211dd081eb21b10
Download URL:

https://repository.library.noaa.gov/view/noaa/66807/noaa_66807_DS1.pdf
File Type:

No Additional Files

More +

Genomic and fitness consequences of a near-extinction event in the northern elephant seal

Details:

Supporting Files

You May Also Like