Does size matter? A test of size-specific mortality in Atlantic salmonSalmo salarsmolts tagged with acoustic transmitters

Newton, M., Barry, J., Dodd, J. A., Lucas, M.C., Boylan, P. and Adams, C. E. (2016) Does size matter? A test of size-specific mortality in Atlantic salmonSalmo salarsmolts tagged with acoustic transmitters. Journal of Fish Biology, 89(3), pp. 1641-1650. (doi: 10.1111/jfb.13066) (PMID:27352823)

[img]
Preview
Text
210393.pdf - Accepted Version

429kB

Abstract

Mortality rates of wild Atlantic salmon Salmo salar smolts implanted with acoustic transmitters were assessed to determine if mortality was size dependent. The routinely accepted, but widely debated, ‘2% transmitter mass: body mass’ rule in biotelemetry was tested by extending the transmitter burden up to 12·7% of body mass in small [mean fork length (LF) 138·3 mm, range 115–168 mm] downstream migrating S. salar smolts. Over the short timescale of emigration (range 11·9–44·5 days) through the lower river and estuary, mortality was not related to S. salar size, nor was a relationship found between mortality probability and transmitter mass: body mass or transmitter length: LF ratios. This study provides further evidence that smolt migration studies can deviate from the ‘2% rule’ of thumb, to more appropriate study‐specific measures, which enables the use of fishes representative of the body size in natural populations without undue effects.

Item Type:Articles
Additional Information:This work was supported by funding from the European Union’s INTERREG IVA Programme (project 2859 ‘IBIS’) managed by the Special EU programmes Body.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barry, Dr James and Dodd, Dr Jennifer and Adams, Professor Colin and Newton, Dr Matthew
Authors: Newton, M., Barry, J., Dodd, J. A., Lucas, M.C., Boylan, P., and Adams, C. E.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
Journal Name:Journal of Fish Biology
Publisher:Wiley
ISSN:0022-1112
ISSN (Online):1095-8649
Published Online:28 June 2016
First Published:First published in Journal of Fish Biology 89(3):1641-1650
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

University Staff: Request a correction | Enlighten Editors: Update this record