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Ecotoxicology and environmental safety v.147, 2018년, pp.200 - 205   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Assessment of acute sublethal effects of clothianidin on motor function of honeybee workers using video-tracking analysis

Alkassab, Abdulrahim T. (Corresponding author. ); Kirchner, Wolfgang H. ( );
  • 초록  

    Abstract Sublethal impacts of pesticides on the locomotor activity might occur to different degrees and could escape visual observation. Therefore, our objective is the utilization of video-tracking to quantify how the acute oral exposure to different doses (0.1–2ng/bee) of the neonicotinoid "clothianidin" influences the locomotor activity of honeybees in a time course experiment. The total distance moved, resting time as well as the duration and frequency of bouts of laying upside down are measured. Our results show that bees exposed to acute sublethal doses of clothianidin exhibit a significant increase in the total distance moved after 30 and 60min of the treatment at the highest dose (2ng/bee). Nevertheless, a reduction of the total distance is observed at this dose 90min post-treatment compared to the distance of the same group after 30min, where the treated bees show an arched abdomen and start to lose their postural control. The treated bees with 1ng clothianidin show a significant increase in total distance moved over the experimental period. Moreover, a reduction in the resting time and increase of the duration and frequency of bouts of laying upside down at these doses are found. Furthermore, significant effects on the tested parameters are observed at the dose (0.5ng/bee) first at 60min post-treatment compared to untreated bees. The lowest dose (0.1ng/bee) has non-significant effects on the motor activity of honeybees compared to untreated bees over the experimental period. Highlights Usage of video-tracking to measure any changes of locomotor activity of honeybees in a time course experiment. Acute sublethal exposure to clothiandin increase the total distance moved at ≥ 0.5ng/bee. Impairment of the righting reflex after turning upside down in the treated bees with ≥ 0.5ng/bee. No recognizable acute effects on the motor activity of treated honeybees at the lowest dose 0.1ng/bee.


  • 주제어

    Clothianidin .   Sublethal .   Locomotor activity .   Tracking .   Honeybee.  

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