Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/11009
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Identification of stock components using morphological markers
Authors: McAdam, Bruce James
Grabowski, Timothy B
Marteinsdottir, Gudrun
Contact Email: b.j.mcadam@stir.ac.uk
Keywords: Atlantic cod
Gadus morhua
morphology
pantophysin
stock structure
Issue Date: Oct-2012
Publisher: Wiley Blackwell for The Fisheries Society of the British Isles
Citation: McAdam BJ, Grabowski TB & Marteinsdottir G (2012) Identification of stock components using morphological markers, Journal of Fish Biology, 81 (5), pp. 1447-1462.
Abstract: This study investigated the development of a quantitative method for distinguishing stock components of Icelandic cod Gadus morhua based on visual examination of morphology. The stock is known to be structured into genetically distinct geographic components (north and south of Iceland) and behavioural types that spawn sympatrically. Differences in morphology were tested between locations, genotypes (a proxy for behaviour) and sexes. Results show morphological markers on the head, fins and body of G. morhua that are correlated with the sex, genotype of the fish at the pantophysin (pan-I) locus and the location at which the fish were caught. Females were found to have relatively deep bodies, and the pan-IBB genotype (associated with deep-water feeding behaviour) have greater gaps between their fins. Overall, morphology is more useful for distinguishing sympatric genotypes but less powerful at identifying genetically distinct geographic sub-populations, perhaps because counter-gradient evolution reduces phenotypic differences even with an underlying genetic cause.
Type: Journal Article
URI: http://hdl.handle.net/1893/11009
DOI Link: http://dx.doi.org/10.1111/j.1095-8649.2012.03384.x
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: Aquaculture
University of Iceland
University of Iceland

Files in This Item:
File Description SizeFormat 
McAdam_et_al_2012_morphology_JOURNAL_VERSION.pdf800.73 kBAdobe PDFUnder Embargo until 31/12/2999     Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependant on the depositor still being contactable at their original email address.

This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.