The University of Southampton
University of Southampton Institutional Repository

The effects of oxygen depletion due to upwelling groundwater on the post-hatch fitness of Atlantic salmon (Salmo salar)

The effects of oxygen depletion due to upwelling groundwater on the post-hatch fitness of Atlantic salmon (Salmo salar)
The effects of oxygen depletion due to upwelling groundwater on the post-hatch fitness of Atlantic salmon (Salmo salar)
The conditions experienced by incubating Atlantic salmon (Salmo salar) eggs are strongly influenced by hyporheic exchange. In some rivers, periods of intense groundwater upwelling can reduce oxygen levels in the incubation zone to 0% saturation. The present study investigated the effect of oxygen sags on the post-hatch fitness of Atlantic salmon. A laboratory experiment allowed fine-scale control of oxygen concentrations to replicate those induced by low oxygen groundwater in rivers. Extreme oxygen sags in the earlier stages of embryo development resulted in a developmental lag with alevin hatching later and at an underdeveloped state. At the latest stages of development, oxygen sags caused premature hatching of severely underdeveloped alevin. These findings combined with a review of the literature suggest post-hatch survival of embryos exposed to groundwater induced hypoxia will be lower due to predation and poor competitiveness.
0706-652X
1830-1840
Bloomer, Jack
95a226e6-9756-4288-9d26-381d4bfbc25e
Sear, David A.
ccd892ab-a93d-4073-a11c-b8bca42ecfd3
Dutey-Magni, Peter
f2713e93-3179-4f7d-82cd-dcd415f1d06c
Kemp, Paul S.
9e33fba6-cccf-4eb5-965b-b70e72b11cd7
Bloomer, Jack
95a226e6-9756-4288-9d26-381d4bfbc25e
Sear, David A.
ccd892ab-a93d-4073-a11c-b8bca42ecfd3
Dutey-Magni, Peter
f2713e93-3179-4f7d-82cd-dcd415f1d06c
Kemp, Paul S.
9e33fba6-cccf-4eb5-965b-b70e72b11cd7

Bloomer, Jack, Sear, David A., Dutey-Magni, Peter and Kemp, Paul S. (2016) The effects of oxygen depletion due to upwelling groundwater on the post-hatch fitness of Atlantic salmon (Salmo salar). Canadian Journal of Fisheries and Aquatic Sciences, 73 (12), 1830-1840. (doi:10.1139/cjfas-2016-0189).

Record type: Article

Abstract

The conditions experienced by incubating Atlantic salmon (Salmo salar) eggs are strongly influenced by hyporheic exchange. In some rivers, periods of intense groundwater upwelling can reduce oxygen levels in the incubation zone to 0% saturation. The present study investigated the effect of oxygen sags on the post-hatch fitness of Atlantic salmon. A laboratory experiment allowed fine-scale control of oxygen concentrations to replicate those induced by low oxygen groundwater in rivers. Extreme oxygen sags in the earlier stages of embryo development resulted in a developmental lag with alevin hatching later and at an underdeveloped state. At the latest stages of development, oxygen sags caused premature hatching of severely underdeveloped alevin. These findings combined with a review of the literature suggest post-hatch survival of embryos exposed to groundwater induced hypoxia will be lower due to predation and poor competitiveness.

Text
cjfas-2016-0189.pdf - Accepted Manuscript
Download (1MB)

More information

Accepted/In Press date: 17 May 2016
e-pub ahead of print date: 10 June 2016
Organisations: Earth Surface Dynamics

Identifiers

Local EPrints ID: 398306
URI: https://eprints.soton.ac.uk/id/eprint/398306
ISSN: 0706-652X
PURE UUID: aef23679-31ca-4433-be63-734c3ac26dc1
ORCID for David A. Sear: ORCID iD orcid.org/0000-0003-0191-6179
ORCID for Peter Dutey-Magni: ORCID iD orcid.org/0000-0002-8942-9836
ORCID for Paul S. Kemp: ORCID iD orcid.org/0000-0003-4470-0589

Catalogue record

Date deposited: 22 Jul 2016 09:27
Last modified: 06 Jun 2018 13:07

Export record

Altmetrics

Contributors

Author: Jack Bloomer
Author: David A. Sear ORCID iD
Author: Paul S. Kemp ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×