Reproduction Dynamics in Copepods Following Exposure to Chemically and Mechanically Dispersed Crude Oil
作者： Bjørn Henrik Hansen , Iurgi Salaberria , Anders J. Olsen , Kari Ella Read , Ida Beathe Øverjordet
DOI: 10.1021/ES504903K
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摘要: Conflicting reports on the contribution of chemical dispersants crude oil dispersion toxicity have been published. This can partly be ascribed to influence physical properties in different experimental conditions. In present study potential reproductive effects dispersed marine copepod Calanus finmarchicus (Gunnerus) was isolated by keeping concentrations and droplet size distributions comparable between parallel chemically (CD, dispersant:oil ratio 1:25) mechanically (MD, no dispersant) exposures. Female copepods were exposed for 96 h CD or MD concentration range 0.2–5.5 mg·L–1 (THC, C5–C36) after which they subjected a 25-day recovery period where production eggs nauplii compared treatments. The two highest concentrations, both upper reported during spills, caused lower initia...
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