Microplastic does not magnify the acute effect of PAH pyrene on predatory performance of a tropical fish (Lates calcarifer),

Aquatic Toxicology,
Volume 198,
2018,
Pages 287-293,
ISSN 0166-445X,

Abstract:

Microplastic (MP) leads to widespread pollution in the marine
ecosystem. In addition to the physical hazard posed by ingestion of
microplastic particles, concern is also on their potential as vector for
transport of hydrophobic contaminants. We experimentally studied the
single and interactive effects of microplastic and pyrene, a polycyclic
aromatic hydrocarbon, on the swimming behaviour and predatory
performance of juvenile barramundi (Lates calcarifer). Juveniles (18+
days post hatch) were exposed to MPs, or pyrene (100 nM), or combination
of both, and feeding rate and foraging activity (swimming) were
analysed. Exposure to MPs alone did not significantly influence feeding
performance of the juveniles, while a dose-effect series of pyrene
showed strong effect on fish behaviour when concentrations were above
100 nM. In the test of combined MP and pyrene exposure, we observed no
effect on feeding while swimming speed decreased significantly. Thus,
our results confirm that short-time exposure to pyrene impacts the
performance of fish juveniles, while additional exposure to microplastic
at the given conditions influenced their activity only and not their
feeding rate. Further studies of the combined effects of microplastics
and pollutants on tropical fish behaviour are encouraged.

https://drive.google.com/open?id=14-kLJ2DA3x_L0cyk6M48x4YWrzG8uuxd
https://doi.org/10.1016/j.aquatox.2018.03.011.(http://www.sciencedirect.com/science/article/pii/S0166445X18302492)

The post Microplastic does not magnify the acute effect of PAH pyrene on predatory performance of a tropical fish (Lates calcarifer) appeared first on One Earth - One Ocean e. V..

Microplastic does not magnify the acute effect of PAH pyrene on predatory performance of a tropical fish (Lates calcarifer),

Aquatic Toxicology,
Volume 198,
2018,
Pages 287-293,
ISSN 0166-445X,

Abstract:

Microplastic (MP) leads to widespread pollution in the marine
ecosystem. In addition to the physical hazard posed by ingestion of
microplastic particles, concern is also on their potential as vector for
transport of hydrophobic contaminants.
We experimentally studied thesingle and interactive effects of microplastic and
pyrene, a polycyclic aromatic hydrocarbon, on the swimming behaviour and predatory
performance of juvenile barramundi (Lates calcarifer). Juveniles (18+
days post hatch) were exposed to MPs, or pyrene (100 nM), or combination
of both, and feeding rate and foraging activity (swimming) were
analysed. Exposure to MPs alone did not significantly influence feeding
performance of the juveniles, while a dose-effect series of pyrene
showed strong effect on fish behaviour when concentrations were above
100 nM. In the test of combined MP and pyrene exposure, we observed no
effect on feeding while swimming speed decreased significantly. Thus,
our results confirm that short-time exposure to pyrene impacts the
performance of fish juveniles, while additional exposure to microplastic
at the given conditions influenced their activity only and not their
feeding rate. Further studies of the combined effects of microplastics
and pollutants on tropical fish behaviour are encouraged.

https://drive.google.com/open?id=14-kLJ2DA3x_L0cyk6M48x4YWrzG8uuxd
https://doi.org/10.1016/j.aquatox.2018.03.011.(http://www.sciencedirect.com/science/article/pii/S0166445X18302492)

The post Microplastic does not magnify the acute effect of PAH pyrene on predatory performance of a tropical fish appeared first on One Earth - One Ocean e. V..