
Giovanni CastaldoUniversity of Antwerp | UA · Department of Biology
Giovanni Castaldo
PhD in Biology
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18
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Publications (18)
The aquatic environment receives a wide variety of contaminants that interact with each other, influencing their mutual toxicity. Therefore, studies of mixtures are needed to fully understand their deleterious effects on aquatic organisms. In the present experiment, we aimed to assess the effects of Cd and Zn mixtures in common carp during a one-we...
In a natural ecosystem, fish are subjected to a multitude of variable environmental factors. It is important to analyze the impact of combined factors to obtain a realistic understanding of the mixed stress occurring in nature. In this study, the physiological performance of juvenile common carp (Cyprinus carpio) exposed for one week to an environm...
The aquatic environment is the final sink of various pollutants including metals, which can pose a threat for aquatic organisms. Waterborne metal mixture toxicity might be influenced by environmental parameters such as the temperature. In the present study, common carp were exposed for 27 days to a ternary metal mixture of Cu, Zn, and Cd at two dif...
To improve our understanding of underlying toxic mechanisms, it is important to evaluate differences in effects that a variety of metals exert at concentrations representing the same toxic level to the organism. Therefore, the main goal of the present study was to compare the effects of waterborne copper (Cu(II)), zinc (Zn(II)) and cadmium (Cd (II)...
In the aquatic environment, metals are present as mixtures, therefore studies on mixture toxicity are crucial to thoroughly understand their toxic effects on aquatic organisms. Common carp were used to assess the effects of short-term Cu(II) and Cd(II) mixtures, using a fixed concentration of one of the metals, representing 25 % of its individual 9...
Metal contamination of the aquatic environment is problematic due to the bioaccumulative, non-biodegradable and toxic proprieties of these elements. Several studies have demonstrated the impact of single metal exposures on the physiological performance of fish but their results are sometimes contradictory, with metals showing different effects acco...
Microbial communities associated with the gut and the skin are strongly influenced by environmental factors, and can rapidly adapt to change. Historical processes may also affect the microbiome. In particular, variation in microbial colonisation in early life has the potential to induce lasting effects on microbial assemblages. However, little is k...
The aquatic environment is continuously under threat because it is the final receptor and sink of waste streams. The development of industry, mining activities and agriculture gave rise to an increase in metal pollution in the aquatic system. Thus a wide occurrence of metal mixtures exists in the aquatic environment. The assessment of mixture stres...
To meet future global demand for fish protein, more fish will need to be farmed using fewer resources, and this will require the selection of non‐aggressive individuals that perform well at high densities. Yet, the genetic changes underlying loss of aggression and adaptation to crowding during aquaculture intensification are largely unknown. We exa...
The metal contamination of the aquatic environment is problematic due to the bioaccumulative, non-biodegradable and toxic proprieties of these elements. Some metals are essential but ultimately they may become inhibitory or toxic at high concentrations, while other (non-essential) have deleterious effects even at low concentrations. Previous studie...
Aquatic environments are subjected to numerous anthropogenic stressors that are much more diverse and variable than those tested in laboratory conditions. So it is important to analyse the effects of metal mixtures to obtain a realistic understanding of the impact of pollution in such natural ecosystems. The impact of a one-week exposure to metal m...
Analyzing effects of metal mixtures is important to obtain a realistic understanding of the impact of mixed stress in natural ecosystems. The impact of a one-week exposure to a sublethal metal mixture containing copper (4.8 μg/L), cadmium (2.9 μg/L) and zinc (206.8 μg/L) was evaluated in the common carp (Cyprinus carpio). To explore whether this ex...
Microbial communities associated with the gut and the skin are strongly influenced by environmental factors, and can rapidly adapt to change. Historical processes may also affect the microbiome. In particular, variation in microbial colonisation in early life has the potential to induce lasting effects on microbial assemblages. However, little is k...
Farmed fish are typically reared at densities much higher than those observed in the wild, but 1 to what extent crowding results in abnormal behaviours that can impact welfare and stress 2 coping styles is subject to debate. Neophobia (i.e. fear of the 'new') is thought to be adaptive 3 under natural conditions by limiting risks, but it is potentia...
Farmed fish are typically reared at densities much higher than those observed in the wild, but to what extent crowding results in abnormal behaviours that can impact welfare and stress coping styles is subject to debate. Neophobia (i.e. fear of the new) is thought to be adaptive under natural conditions by limiting risks, but it is potentially mala...
Aquatic environments are subjected to numerous anthropogenic stressors that are much more diverse and variable than those usually tested in laboratory conditions. Even if previous research indicated that strong interactive effects are observed in metal mixture scenarios that are not expected based on single metal exposures, the assessment of mixtur...