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Suominen E, Speers-Roesch B, Fadhlaoui M, Couture P, Blewett TA, Crémazy A. The effects of winter cold acclimation on acute and chronic cadmium bioaccumulation and toxicity in the banded killifish (Fundulus diaphanus). AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 262:106667. [PMID: 37619397 DOI: 10.1016/j.aquatox.2023.106667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/18/2023] [Accepted: 08/19/2023] [Indexed: 08/26/2023]
Abstract
Temperate freshwater fishes can experience large seasonal temperature fluctuations that could affect their exposure and sensitivity to trace metals. Yet, temperature effects are overlooked in ecotoxicology studies, especially for cold temperatures typical of the winter. In the present study, the effects of long-term cold acclimation on Cd bioaccumulation and toxicity were investigated in a freshwater fish, the banded killifish (Fundulus diaphanus). Killifish were acclimated to 14 °C or gradually cooled (2 °C/week) to 4 °C and cold acclimated for 6 weeks. Then, both acclimation groups were exposed to environmentally realistic waterborne Cd concentrations (0, 0.5 or 5 µg Cd L-1) for a further 28 d at their respective acclimation temperatures. Tissue metal bioaccumulation, fish survival, condition, and markers of oxidative and ionoregulation stress, were measured after 0, 2, 5 and 28 days of Cd exposure. Cadmium tissue accumulation increased over the exposure duration and was typically lower in cold-acclimated fish. In agreement with this lower bioaccumulation, fewer Cd toxic effects were observed in cold-acclimated fish. There was little evidence of a difference in intrinsic Cd sensitivity between 4 °C- and 14 °C-acclimated fish, as Cd toxicity appeared to closely follow Cd bioaccumulation. Our study suggests that current environmental water quality guidelines would be protective in the winter for the abundant and ecologically-important banded killifish.
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Affiliation(s)
- Emily Suominen
- University of New Brunswick, New Brunswick, Saint John, NB, Canada
| | | | - Mariem Fadhlaoui
- Centre Eau Terre Environnement de l'Institut National de la Recherche Scientifique, Québec, QC, Canada
| | - Patrice Couture
- Centre Eau Terre Environnement de l'Institut National de la Recherche Scientifique, Québec, QC, Canada
| | | | - Anne Crémazy
- Centre Eau Terre Environnement de l'Institut National de la Recherche Scientifique, Québec, QC, Canada.
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Wang MC, Hsu MT, Lin CC, Hsu SC, Chen RD, Lee JR, Chou YL, Tseng HP, Furukawa F, Hwang SPL, Hwang PP, Tseng YC. Adaptive metabolic responses in a thermostabilized environment: Transgenerational trade-off implications from tropical tilapia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150672. [PMID: 34597556 DOI: 10.1016/j.scitotenv.2021.150672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/24/2021] [Accepted: 09/25/2021] [Indexed: 06/13/2023]
Abstract
Relatively warm environments caused by global warming enhance the productivity of aquaculture activities in tropical/subtropical regions; however, the intermittent cold stress (ICS) caused by negative Arctic Oscillation can still result in major economic losses. In contrast to endotherms, ectothermic fishes experience ambient temperature as an abiotic factor that is central to performance and survival. Therefore, the occurrence of extreme temperatures caused by climate change has ignited a surge of scientific interest from ecologists, economists and physiologists. In this study, we test the transgenerational effects of rearing cold-experienced (CE) and cold-naïve (CN) strains of tropical tilapia. Our results show that compared to CN tilapia, the CE strain preferentially converts carbohydrates into lipids in liver at a regular temperature of 27 °C. Besides, at a low temperature of 22 °C, the CE strain exhibits a broader aerobic scope than CN fish, and their metabolite profile suggests a metabolic shift towards the utilization of glutamate derivatives. Therefore, in response to thermal perturbations, this transgenerational metabolic adjustment provides evidence into the adaptive trade-off mechanisms in tropical fish. Nevertheless, global warming may result in less thermal variation each year, and the stabilized ambient temperature may cause tropical tilapia to gradually exhibit lower energy deposits in liver. In addition to those habitants in cold and temperate regions, a lack of cold exposure to multiple generations of fish may decrease the native cold-tolerance traits of subtropical/tropical organisms; this notion has not been previously explored in terms of the biological effects under anthropogenic climate change.
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Affiliation(s)
- Min-Chen Wang
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan; Biodiversity Program, Taiwan International Graduate Program, Academia Sinica and National Taiwan Normal University, Taipei, Taiwan; Institute of Cellular and Organism Biology, Academia Sinica, Taipei City, Taiwan
| | - Mao-Ting Hsu
- Neurobiology Research Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Ching-Chun Lin
- Institute of Cellular and Organism Biology, Academia Sinica, Taipei City, Taiwan
| | - Shao-Chun Hsu
- Branch Office of Research and Development, National Taiwan University College of Medicine, Taipei City, Taiwan
| | - Ruo-Dong Chen
- Institute of Cellular and Organism Biology, Academia Sinica, Taipei City, Taiwan
| | - Jay-Ron Lee
- Institute of Cellular and Organism Biology, Academia Sinica, Taipei City, Taiwan
| | - Yi-Lin Chou
- Institute of Cellular and Organism Biology, Academia Sinica, Taipei City, Taiwan
| | - Hua-Pin Tseng
- Institute of Cellular and Organism Biology, Academia Sinica, Taipei City, Taiwan
| | - Fumiya Furukawa
- School of Marine Biosciences, Kitasato University, Tokyo, Japan
| | - Sheng-Ping L Hwang
- Institute of Cellular and Organism Biology, Academia Sinica, Taipei City, Taiwan
| | - Pung-Pung Hwang
- Institute of Cellular and Organism Biology, Academia Sinica, Taipei City, Taiwan
| | - Yung-Che Tseng
- Institute of Cellular and Organism Biology, Academia Sinica, Taipei City, Taiwan.
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Cao Q, Yin S. The influence of environmental calcium on the branchial morphology in a catadromous fish. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:8945-8952. [PMID: 33405148 DOI: 10.1007/s11356-020-11922-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 12/01/2020] [Indexed: 06/12/2023]
Abstract
Eels are exposed to Ca2+ changes during migration between seawater and freshwater. The gill is the main organ of active calcium transport and has a large surface area to be particularly sensitive to environmental changes in the aquatic environment. In this research, we focused on the morphological changes of gill tissues when eels are faced with the environmental calcium challenges. Based on the results of hematoxylin and eosin (HE) staining and immunohistochemistry, compared with the control group (normal Ca2+ environment), the filament and lamella lengths and lamellar frequency (LF) appeared higher in high calcium environment and lower in deficient calcium environment, while the lamella width and filamental lamellar surface area (SAFL) decreased in high calcium environment and increased in deficient calcium environment. And there was no difference in the number filaments in first right gill arch in the three Ca2+ water environment. Transmission electron microscopy was employed to examine the ultrastructural changes in gills in different Ca2+ water environment. The nucleus and endoplasmic reticulum had a tendency to expand in calcium-deficient water, but had a tendency to shrink in high-calcium water comparing with the control group. This study provides the support that branchial surface areas are regulated in different Ca2+ waters through a list of calcium transporters including CACNB2.
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Affiliation(s)
- Quanquan Cao
- College of Marine Science and Engineering, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, Jiangsu, China
- Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005, China
| | - Shaowu Yin
- College of Marine Science and Engineering, College of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, Jiangsu, China.
- Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005, China.
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