eCite Digital Repository

Population genetic signatures of a climate change driven marine range extension

Citation

Ramos, JE and Pecl, GT and Moltschaniwskyj, N and Semmens, JM and Souza, CA and Strugnell, JM, Population genetic signatures of a climate change driven marine range extension, Scientific Reports, 8 Article 9558. ISSN 2045-2322 (2018) [Refereed Article]


Preview
PDF
2Mb
  

Copyright Statement

© The Author(s) 2018. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/

DOI: doi:10.1038/s41598-018-27351-y

Abstract

Shifts in species distribution, or ‘range shifts’, are one of the most commonly documented responses to ocean warming, with important consequences for the function and structure of ecosystems, and for socio-economic activities. Understanding the genetic signatures of range shifts can help build our knowledge of the capacity of species to establish and persist in colonised areas. Here, seven microsatellite loci were used to examine the population connectivity, genetic structure and diversity of Octopus tetricus, which has extended its distribution several hundred kilometres polewards associated with the southwards extension of the warm East Australian Current along south-eastern Australia. The historical distribution and the range extension zones had significant genetic differences but levels of genetic diversity were comparable. The population in the range extension zone was sub-structured, contained relatively high levels of self-recruitment and was sourced by migrants from along the entire geographic distribution. Genetic bottlenecks and changes in population size were detected throughout the range extension axis. Persistent gene flow from throughout the historical zone and moderate genetic diversity may buffer the genetic bottlenecks and favour the range extension of O. tetricus. These characteristics may aid adaptation, establishment, and long-term persistence of the population in the range extension zone.

Item Details

Item Type:Refereed Article
Keywords:climate change, range shift, genetics, Octopus tetricus
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Fisheries Sciences not elsewhere classified
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Wild Caught
Objective Field:Fisheries - Wild Caught not elsewhere classified
UTAS Author:Ramos, JE (Mr Jorge Ramos Castillejos)
UTAS Author:Pecl, GT (Professor Gretta Pecl)
UTAS Author:Semmens, JM (Professor Jayson Semmens)
ID Code:126801
Year Published:2018
Web of Science® Times Cited:5
Deposited By:Fisheries and Aquaculture
Deposited On:2018-06-25
Last Modified:2018-11-27
Downloads:36 View Download Statistics

Repository Staff Only: item control page