Article

 

Evidence for interannual variation in genetic structure of Dungeness crab (Cancer magister) along the California Current System Public Deposited

Default
https://ir.library.oregonstate.edu/concern/articles/rx913w21b

Descriptions

Attribute NameValues
Alternative Title
Creator
Abstract
  • Using a combination of population‐ and individual‐based analytical approaches, we provide a comprehensive examination of genetic connectivity of Dungeness crab (Cancer magister) along ~1,200 km of the California Current System (CCS). We sampled individuals at 33 sites in 2012 to establish a baseline of genetic diversity and hierarchal population genetic structure and then assessed interannual variability in our estimates by sampling again in 2014. Genetic diversity showed little variation among sites or across years. In 2012, we observed weak genetic differentiation among sites (FST range = −0.005–0.014) following a pattern of isolation by distance (IBD) and significantly high relatedness among individuals within nine sampling sites. In 2014, pairwise FST estimates were lower (FST range = −0.014–0.007), there was no spatial autocorrelation, and fewer sites had significant evidence of relatedness. Based on these findings, we propose that interannual variation in the physical oceanographic conditions of the CCS influences larval recruitment and thus gene flow, contributing to interannual variation in population genetic structure. Estimates of effective population size (Ne) were large in both 2012 and 2014. Together, our results suggest that Dungeness crab in the CCS may constitute a single evolutionary population, although geographically limited dispersal results in an ephemeral signal of IBD. Furthermore, our findings demonstrate that populations of marine organisms may be susceptible to temporal changes in population genetic structure over short time periods; thus, interannual variability in population genetic measures should be considered.
License
Resource Type
DOI
Date Issued
Citation
  • Jackson TM, Curtis Roegner G, O'Malley KG. Evidence for interannual variation in genetic structure of Dungeness crab (Cancer magister) along the California Current System. Mol Ecol. 2018;27:352–368. https://doi.org/10.1111/mec.14443
Journal Title
Journal Volume
  • 27
Journal Issue/Number
  • 2
Academic Affiliation
Non-Academic Affiliation
Rights Statement
Related Items
Funding Statement (additional comments about funding)
  • Oregon Sea Grant. Grant Number: NA14OAR4170064
Publisher
Peer Reviewed
Language
Additional Information
  • To access this item from the National Sea Grant Library via interlibrary loan, email a request to nsgl[at]gso.uri.edu. Include article title, author, year published, and ORESU number.

Relationships

Parents:
In Collection:

Items