Lethal and sub-lethal effects of the insecticide fipronil on juvenile brown shrimp Farfantepenaeus aztecus

被引:21
|
作者
Al-Badran, Ali Abdulameer [1 ]
Fujiwara, Masami [1 ]
Gatlin, Delbert M., III [1 ]
Mora, Miguel A. [1 ]
机构
[1] Texas A&M Univ, Dept Wildlife & Fisheries Sci, College Stn, TX 77843 USA
来源
SCIENTIFIC REPORTS | 2018年 / 8卷
关键词
LITOPENAEUS-VANNAMEI; ENVIRONMENTAL FATE; SURFACE WATERS; ACUTE TOXICITY; BLUE CRABS; GROWTH; PESTICIDES; DESULFINYL; RESPONSES; DECAPODA;
D O I
10.1038/s41598-018-29104-3
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Chemical pesticides are widely used around the world, but at the same time, they may cause direct or indirect risks to many non-target organisms. Recent increased use of insecticides in coastal areas, for example to control invasive tawny crazy ants, raises concern that insecticides may affect ecologically and/or commercially important species found in estuaries. Here, we investigated the lethal and sublethal effects of fipronil on juvenile brown shrimp Farfantepenaeus aztecus over 29 days at five different nominal concentrations (0.1, 1.0, 3.0, 6.4, and 10.0 mu g/L) in a laboratory experiment. Exposure to all of the fipronil treatments resulted in all individuals dying before the end of the experiment; whereas, no individual died in the control (0.0 mu g/L). The 96-hour LC50 was determined to be 1.3 mu g/L. Shrimp also experienced weight loss under all of the fipronil treatments. Inter-moult interval was increased from 12.2 +/- 1.64 day in the control group to 15.5 +/- 0.53 day in the 1.0 mu g/L treatment. Lipid content of shrimp increased significantly in a concentration-dependent manner. Finally, behavioral and body color changes were also observed under the fipronil treatments. We conclude F. aztecus is very sensitive to fipronil and monitoring is needed in coastal areas.
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页数:12
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