Chronic adverse effects of the oil dispersed sediments on benthic copepods: Ultimate effects on the individuals and populations

Title
Chronic adverse effects of the oil dispersed sediments on benthic copepods: Ultimate effects on the individuals and populations
Author(s)
원은지; 이연정; 강예희; 이균우; 김창준; 김민섭; 김경련
KIOST Author(s)
Lee, Yeonjung(이연정)Gang, Yehui(강예희)Lee, Kyun Woo(이균우)Kim, Chang Joon(김창준)Kim, Kyoungrean(김경련)
Publication Year
2017-09-22
Abstract
To evaluate the effects of sediment assembled crude oil on acute (survival, egg damages, feeding) and chronic (growth, reproduction) result, the benthic copepod T. japonicus was exposed to crude oil polluted sediments. For direct exposure to the sediment, 6h exposure cause significant damages on the eggs of ovigerous females. Accidental oil spill have causes ecological risks in aquatic environment. Oil attached to sediments has received great concern because effective technologies and equipment to remove oil from fine grains have not been developed sufficiently. In this study, copepod T. japonicus was exposed to oil dispersed sediments (<75μm grain size) and its biological repercussions were measured from molecular to individuals levels. Adult and nauplius of T. japonicus were exposed to oil polluted sediments. In exposure group, molecular responses (antioxidant genes) were detected caused by oil dispersed sediments. For copepodid at C3 and C4 stages, the growth retardation was measured in test group for 10 days exposure to oil polluted sediments. For adult T. japonicus, survival rate was not observed but their reproduction rate (number of ovigerous female and their hatching success) was significantly reduced. The inhibition of assimilation rate of diet (Tetraselmis suecica) was also tested separately using 13C labeled phytoplankton. This study showed diverse end-points of T. japonicus can be markers for oil dis to the sediment, 6h exposure cause significant damages on the eggs of ovigerous females. Accidental oil spill have causes ecological risks in aquatic environment. Oil attached to sediments has received great concern because effective technologies and equipment to remove oil from fine grains have not been developed sufficiently. In this study, copepod T. japonicus was exposed to oil dispersed sediments (<75μm grain size) and its biological repercussions were measured from molecular to individuals levels. Adult and nauplius of T. japonicus were exposed to oil polluted sediments. In exposure group, molecular responses (antioxidant genes) were detected caused by oil dispersed sediments. For copepodid at C3 and C4 stages, the growth retardation was measured in test group for 10 days exposure to oil polluted sediments. For adult T. japonicus, survival rate was not observed but their reproduction rate (number of ovigerous female and their hatching success) was significantly reduced. The inhibition of assimilation rate of diet (Tetraselmis suecica) was also tested separately using 13C labeled phytoplankton. This study showed diverse end-points of T. japonicus can be markers for oil dis
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23829
Bibliographic Citation
한국해양생명과학회 정기 학술대회, pp.170, 2017
Publisher
한국해양생명과학회
Type
Conference
Language
English
Publisher
한국해양생명과학회
Related Researcher
Research Interests

Marine biogeochemistry,Stable isotope ecology,해양생지화학,안정동위원소 생태학

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