Toxicity of quantum dots and cadmium to rainbow trout (Oncorhynchus mykiss) in early ontogenesis
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1
Nature Research Centre, Lithuania
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2
National Cancer Institute, Lithuania
The aim of the study was to investigate toxic effects of CdSe/ZnS-COOH quantum dots (QD) and cadmium (Cd) on biological parameters of rainbow trout (Oncorhychus mykiss) in its early stages of development (embryos and larvae). It was found that short-term (24-, 96-hour) exposure to sublethal concentrations of QD and Cd increased mortality of embryos and larvae, disturbed function of the cardio-respiratory system (gill ventilation frequency, heart rate) and affected behavioural responses (individuals making nests) in rainbow trout larvae. The results indicated that toxic effects of QD and Cd on rainbow trout larvae depended on the type of chemical substance, affected stage of development and exposure duration. Comparative studies of the effects of QD and Cd on rainbow trout in early stages of development showed that larvae were more sensitive to Cd and QD as compared to embryos. It was suggested that the chorion envelopes of eggs surround and protect the embryo from QD and Cd. Cadmium was more toxic to larvae than QD. Longer exposure (96-hour) of QD and Cd induced more remarkable changes in test-parameters. This original study requires more investigations evaluating the mechanism of toxicity of QD to fish.
Acknowledgements
This research was supported by the Open Access to research infrastructure of the Nature Research Centre and National Cancer Institute under Lithuanian open access network initiative. This work is funded by the Research Council of Lithuania, Project No. MIP-108/2015.
Keywords:
Quantum dots,
biological parameters,
Oncorhychus mykiss,
Cadmium,
Toxicity Tests
Conference:
XV European Congress of Ichthyology, Porto, Portugal, 7 Sep - 11 Sep, 2015.
Presentation Type:
Poster Presentation
Topic:
Physiology, Behavior and Toxicology
Citation:
Cibulskaitė
Ž,
Kazlauskienė
N,
Rotomskis
R and
Kulvietis
V
(2015). Toxicity of quantum dots and cadmium to rainbow trout (Oncorhynchus mykiss) in early ontogenesis.
Front. Mar. Sci.
Conference Abstract:
XV European Congress of Ichthyology.
doi: 10.3389/conf.FMARS.2015.03.00195
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Received:
19 Nov 2015;
Published Online:
02 Dec 2015.
*
Correspondence:
PhD. Živilė Cibulskaitė, Nature Research Centre, Vilnius, LT - 08412, Lithuania, ziwiliukx@gmail.com