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
- Maria Cristina Bruno, Mauro Carolli, Bruno Maiolini, Settling distances of benthic invertebrates in a sediment mobilization simulation in semi-natural flumes , Journal of Limnology: Vol. 75 No. 1 (2016)
- Claudia Giardino, Mariano Bresciani, Daniela Stroppiana, Alessandro Oggioni, Giuseppe Morabito, Optical remote sensing of lakes: an overview on Lake Maggiore , Journal of Limnology: Vol. 73 No. s1 (2014): Limnology in the 21st Century: celebrating 75 years of ecological research in Pallanza
- Pablo S. Guimarães, Layanna Zigiotto, Marinês Garcia, Maria J. Dellamano-Oliveira, Armando A.E. Vieira, Danilo Giroldo, Phytoplankton relationship with bacterioplankton, dissolved carbohydrates and water characteristics in a subtropical coastal lagoon , Journal of Limnology: Vol. 72 No. 3 (2013)
- Peter Anegg, Roland Psenner, Barbara Tartarotti, Infestation of zooplankton with Triaenophorus and Proteocephalus procercoids (Cestoda) in a deep oligotrophic lake , Journal of Limnology: Vol. 74 No. 1 (2015)
- Emilia Rota, Marco Bartoli, Alex Laini, First time in Italy. Is the elusive aquatic megadrile Sparganophilus Benham, 1892 (Annelida, Clitellata) accelerating its dispersal in Europe? , Journal of Limnology: Vol. 73 No. 3 (2014)
- Itzel Sigala Regalado, Socorro Lozano García, Liseth Pérez Alvarado, Margarita Caballero, Alfonso Lugo Vázquez, Ecological drivers of testate amoeba diversity in tropical water bodies of central Mexico , Journal of Limnology: Vol. 77 No. 3 (2018)
- Talita M. de Andrade Santos, Bianca de Freitas Terra, Eugênia Zandonà, Sandra T. Santaella, Carla F. Rezende, Phosphorus body content in an herbivorous fish in environments with different trophic state , Journal of Limnology: Vol. 75 No. 3 (2016)
- Giuseppe Alfonso, Fabio Stoch, Federico Marrone, An annotated checklist and bibliography of the Diaptomidae (Copepoda, Calanoida) of Italy, Corsica, and the Maltese islands , Journal of Limnology: Vol. 80 No. 3 (2021): Celebratory Issue - 80th Anniversary of the Journal of Limnology
- Lei Zhang, Qianjiahua Liao, Chao Zeng, Qiongli Mo, Chengxin Fan, Effects of pretreatment on the sequential phosphorus fractionation of anaerobic sediment , Journal of Limnology: Vol. 73 No. 2 (2014)
- Angela Boggero, Elzbieta Dumnicka, Riccardo Fornaroli, Daniele Paganelli, Silvia Zaupa, Geotargeting spatial and temporal data of Italian freshwater high-altitude macroinvertebrates , Journal of Limnology: Vol. 82 No. s1 (2023): Georeferenced freshwater biodiversity data
<< < 29 30 31 32 33 34 35 36 37 38 > >>
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