Metabolic capacities of common carp (Cyprinus carpio) following combined exposures to copper and environmental hypoxia

Malekpouri, Pedram; Peyghan, Rahim; Mahboobi-Soofiani, Nasrollah; Mohammadian, Babak

doi:10.1016/j.ecoenv.2016.01.004

Cited by 16 publications

(15 citation statements)

References 56 publications

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“…Further, this is supported by the fact that in groups exposed to copper, a decrease in oxygen concentration in the water did not affect the metabolic rate of exposed fish. Work by Malekpouri et al (2016) reported a different trend when they investigated the effects of the combined exposure to copper and hypoxia on the metabolic capabilities of the crucian carp (Malekpouri et al, 2016). They found that the interaction of the two stressors caused the maximum metabolic rate and aerobic scope to increase after a chronic 7 day exposure but the P crit was reduced.…”

Section: Discussionmentioning

confidence: 99%

“…Oxygen levels fluctuate in natural environments, and hypoxia occurs when the oxygen concentrations are sufficiently low to become a stressor to organisms living in those systems (Diaz and Breitburg, 2009; Malekpouri et al, 2016). Areas of low oxygen occur naturally in aquatic ecosystems, but in the last decades hypoxic areas have increased rapidly, likely as a result of anthropogenic activity, resulting in extensive hypoxic zones worldwide (Gewin, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, fish exposed to copper have been shown to lose the ability to sense environmental oxygen levels (Geest et al, 2002). This raises a significant concern as aquatic hypoxia and copper pollution often co-occur in the environment (Malekpouri et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…For mangrove rivulus ( Kryptolebias marmoratus ), exposure to copper induced hypoxia-like changes to gill morphology and increased the sensitivity of the hypoxia emersion response (Blewett et al, 2017). In addition, for the common carp, a reduction in standard metabolic rate and critical oxygen level (P crit ) was seen after combined exposure to copper and hypoxia (Malekpouri et al, 2016). Of note, most studies to date were limited to species considered to be relatively tolerant to hypoxia, highlighting the importance of investigating how these combined stressors affect species that have a lower ability to tolerate low oxygen conditions.…”

Section: Introductionmentioning

confidence: 99%

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Sublethal exposure to copper supresses the ability to acclimate to hypoxia in a model fish species

et al. 2019

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sublethal exposure to copper supresses the ability to acclimate to hypoxia in a model fish species

et al. 2019

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“…Waterborne Cu can decrease an animals' ability to deal with hypoxia (Bennett et al, 1995); chronic Cu and hypoxia exposures may have either synergistic (Malekpouri et al, 2016) or antagonistic effects (Ransberry et al, 2016). McGeer et al (2000) concluded that chronic waterborne Cu exposure increased metabolic costs in trout; a decrease in swimming capacity was associated with higher oxygen consumption rates, while similar exposure to waterborne Cd did not appear to exert any metabolic costs.…”

Section: Introductionmentioning

confidence: 99%

Physiological impacts and bioaccumulation of dietary Cu and Cd in a model teleost: The Amazonian tambaqui (Colossoma macropomum)

et al. 2018

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Increasing anthropogenic activities in the Amazon have led to elevated metals in the aquatic environment. Since fish are the main source of animal protein for the Amazonian population, understanding metal bioaccumulation patterns and physiological impacts is of critical importance. Juvenile tambaqui, a local model species, were exposed to chronic dietary Cu (essential, 500 μg Cu/g food) and Cd (non-essential, 500 μg Cd/g food). Fish were sampled at 10-14, 18-20 and 33-36 days of exposure and the following parameters were analyzed: growth, voluntary food consumption, conversion efficiency, tissue-specific metal bioaccumulation, ammonia and urea-N excretion, O consumption, P, hypoxia tolerance, nitrogen quotient, major blood plasma ions and metabolites, gill and gut enzyme activities, and in vitro gut fluid transport. The results indicate no ionoregulatory impacts of either of the metal-contaminated diets at gill, gut, or plasma levels, and no differences in plasma cortisol or lactate. The Cd diet appeared to have suppressed feeding, though overall tank growth was not affected. Bioaccumulation of both metals was observed. Distinct tissue-specific and time-specific patterns were seen. Metal burdens in the edible white muscle remained low. Overall, physiological impacts of the Cu diet were minimal. However dietary Cd increased hypoxia tolerance, as evidenced by decreased P, increased time to loss of equilibrium, a lack of plasma glucose elevation, decreased plasma ethanol, and decreased NQ during hypoxia. Blood O transport characteristics (P, Bohr coefficient, hemoglobin, hematocrit) were unaffected, suggesting that tissue level changes in metabolism accounted for the greater hypoxia tolerance in tambaqui fed with a Cd-contaminated diet.

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Profiling research on PFAS in wildlife: Systematic evidence map and bibliometric analysis

Vendl,

Taylor,

Bräunig

et al. 2024

Ecol Sol and Evidence

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Per‐ and polyfluoroalkyl substances (PFAS) are a large group of synthetic chemicals that have been in use for over 70 years. Their ubiquitous distribution and harmful effects pose a threat to wildlife worldwide. To provide a comprehensive synopsis and show the gaps and gluts of existing research on PFAS exposure in wildlife, we created a systematic map and bibliographic analysis of the literature. We followed our protocol to conduct a systematic literature search on Scopus, Web of Science and five other databases. In two steps (title/abstract/keywords and full‐text), we screened peer‐reviewed empirical articles, preprints and theses in English that studied the concentration of at least one of 34 PFAS compounds in free‐ranging wildlife or their parts/products. Following the protocol, we extracted data and performed a critical appraisal. We included 581 publications. From the first and only paper in 2001, there was a linear annual increase to 54 papers in 2021. While PFOS (97% of studies), PFOA (91%) and long‐chain PFAS in general were the most measured, few studies investigated new‐generation PFAS (e.g. GenX and ADONA). Across the studied 1042 species from 26 taxonomic classes, the most frequent were the common carp (Cyprinus carpio, 8%), polar bear (Ursus maritimus, 6%) and European perch (Perca fluviatilis, 5%). Most sampling took place in the United States (17%), Norway (13%), Canada (12%) and China (10%), which were also the main publishing countries. Polar regions attracted significant research interest from countries all around the globe. Aquatic habitats (marine: 31%, freshwater: 28%) of temperate zones were the most common locations for sample collection. We encourage researchers to work towards closing the following gaps: investigating new‐generation PFAS, assessing PFAS in mid‐ and low‐income countries and performing more long‐term studies, especially on invertebrates. We note the recent rise in studies on the physiological consequences of PFAS exposure and encourage further work on this crucial topic. Furthermore, we recommend that the statement of potential and actual conflicts of interest, and the provision of raw data and analysis code should be made compulsory by all journals and routinely enforced. This practice will mitigate conflict of interest and ensure reproducibility.

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Metabolic capacities of common carp (Cyprinus carpio) following combined exposures to copper and environmental hypoxia

Cited by 16 publications

References 56 publications

Sublethal exposure to copper supresses the ability to acclimate to hypoxia in a model fish species

Sublethal exposure to copper supresses the ability to acclimate to hypoxia in a model fish species

Physiological impacts and bioaccumulation of dietary Cu and Cd in a model teleost: The Amazonian tambaqui (Colossoma macropomum)

Profiling research on PFAS in wildlife: Systematic evidence map and bibliometric analysis

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