Chronic exposure of adults and embryos of Pandalus borealis to oil causes PAH accumulation, initiation of biomarker responses and an increase in larval mortality.
Adult shrimps (Pandalus borealis) and their embryos were exposed to an oil-water dispersion (OWD) at concentrations of 0.015, 0.06 and 0.25 mg/L using a continuous flow system. Lysosomal membrane stability was analysed in haemocytes using the neutral red retention assay and an alkaline unwinding assay was used to measure DNA damage in hepatopancreas tissue. Exposure to oil induced concentration and time dependent biomarker responses in adult shrimps together with the accumulation of PAH in their tissues. Oil exposure of shrimp embryos caused increased mortality in the resultant larvae, even if the larvae were kept in clean water after hatching. There were minor differences observed in larval stage development times in the first part of the experiments. The fatty acid composition of embryos exposed to oil was different to that of non-exposed larvae. PAH tissue concentration and biomarker responses correlated to the reduced survival of the shrimp larvae.
Bechmann
Renée Katrin
RK
International Research Institute of Stavanger/IRIS-Biomiljø, Mekjarvik 12, 4070 Randaberg, Norway. rkb@iris.no
Larsen
Bodil Katrine
BK
Taban
Ingrid Christina
IC
Hellgren
Lars I
LI
Møller
Per
P
Sanni
Steinar
S
D000818:Animals; D015415:Biomarkers; D004625:Embryo, Nonmammalian; D005227:Fatty Acids / Q000378:metabolism; D007814:Larva / Q000737:chemistry; D009026:Mortality; D033542:Pandalidae; D011084:Polycyclic Aromatic Hydrocarbons / Q000493:pharmacokinetics* / Q000633:toxicity*; D014018:Tissue Distribution; D014874:Water Pollutants, Chemical / Q000493:pharmacokinetics* / Q000633:toxicity*
D015415:Biomarkers; D005227:Fatty Acids; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical