Larval fish sensitivity to a simulated cold-water pulse varies between species and age
Accepted: 27 June 2022
Supplementary: 161
HTML: 135
All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.
Authors
The release of cold-water from hypolimnetic zones of impoundments sharply reduces downstream riverine water temperature. This cold-water pollution (CWP) can extend for hundreds of kilometres, severely challenging the physiological ability of aquatic fauna, particularly ectotherms such as fish, to maintain essential processes such as metabolism, development and growth and survival. The impact of CWP on native fish, especially early life stages, is poorly known. We investigated the effect of a 24-hour exposure to a range of environmentally-related water temperatures (8, 10, 12, 14, 16, 18 and 20°C) on three age-classes (<24-hour-old, 7-day and 14-day-old larvae) of two Australian native fish species: Murray cod (Maccullochella peelii) and Macquarie perch (Macquaria australasica). Overall, larvae of M. peelii were more sensitive to lower water temperatures and hence CWP than M. australasica, indicated by higher rates of equilibrium loss. Larvae of M. peelii were most sensitive to exposure at seven days old whereas M. australasica larvae were most sensitive at <24-h-old. Using our results, we modelled pre- and post-impoundment temperature scenarios and estimated the downstream CWP footprint for both species in an Australian river reach. Larvae of M. peelii were predicted to be absent from the first 26 km of river downstream of the impoundment compared with no impact on the distribution of M. australasica. Managing riverine water temperature below impoundments is fundamental to promoting positive outcomes for endemic fish on not only a local, but global basis. This study emphasises the differential impact of CWP among the critical early life stages and fish species and highlights the urgent need to better manage hypolimnetic water releases to improve downstream river ecosystems.
Edited by
Pietro Volta, CNR-IRSA Verbania, ItalyHow to Cite
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Similar Articles
- Oscar RAVERA, An index for estimating the potential impact on the environment of the pollutant content in aquatic populations , Journal of Limnology: Vol. 67 No. 1 (2008)
- John J. GIBSON, Jean S. BIRKS, Dean S. JEFFRIES, Sanjeev KUMAR, Kenneth A. SCOTT, Julian AHERNE, Patrick D. SHAW, Site-specific estimates of water yield applied in regional acid sensitivity surveys across western Canada , Journal of Limnology: Vol. 69 No. s1 (2010): Impacts of sulphur and nitrogen deposition in western Canada
- Shigeto ODA, Takayuki HANAZATO, Diel vertical migration patterns in two populations of Chaoborus flavicans larvae (Diptera: Chaoboridae) in response to fish kairomones , Journal of Limnology: Vol. 67 No. 2 (2008)
- Silvia TAVERNINI, Elena FRATTA, Franco SARTORE, Giampaolo ROSSETTI, Distribution and ecology of calanoid species in relation to morphometric and chemical characteristics of lakes and ponds of the Northern Apennines (Italy) , Journal of Limnology: Vol. 62 No. 1 (2003)
- Joanna Sender, Weronika Maślanko, Monika Różańska-Boczula, Kevin Cianfaglione, A new multi-criteria method for the ecological assessment of lakes: A case study from the Transboundary Biosphere Reserve ‘West Polesie’ (Poland) , Journal of Limnology: Vol. 76 No. s1 (2017): Aquatic biomonitoring: Lessons from the past, challenges for the future
- Lynn Van Den Broecke, Koen Martens, Valentina Pieri, Isa Schön, Ostracod valves as efficient UV protection , Journal of Limnology: Vol. 71 No. 1 (2012)
- Walter AMBROSETTI, Luigi BARBANTI, Nicoletta SALA, Residence time and physical processes in lakes , Journal of Limnology: Vol. 62 No. s1 (2003): Residence Time in Lakes: Science, Management, Education
- Javier Alcocer, Luis A. Oseguera, Guillermo Sánchez, Circe G. González, Joaquín R. Martínez, Rigel González, Bathymetric and morphometric surveys of the Montebello Lakes, Chiapas , Journal of Limnology: Vol. 75 No. s1 (2016): Proceedings of the 6th National Congress of Limnology
- Elisa BURASCHI, Franco SALERNO, Chiara MONGUZZI, Giulia BARBIERO, Gianni TARTARI, Characterization of the Italian lake-types and identification of their reference sites using anthropogenic pressure factors , Journal of Limnology: Vol. 64 No. 1 (2005)
- Dunja Lukic, Csaba F. Vad, Zsófia Horváth, Isolation by sugar flotation has no direct effect on the hatching success of zooplankton resting eggs , Journal of Limnology: Vol. 75 No. 2 (2016)
<< < 48 49 50 51 52 53 54 55 56 57 > >>
You may also start an advanced similarity search for this article.
-
John D. Koehn, Charles R. Todd, Henry Wootton, Michael JoyMarine and Freshwater Research : 2023