Effects of some pesticides on Bombus terrestris under laboratory conditions

Year 2019, , 217 - 219, 24.12.2019

Derya Taplamacıoğlu İsmail Karaca

https://doi.org/10.31015/jaefs.2019.4.3

Abstract

Pesticides have not only lethal effect on bees but they can also change
their navigational behaviors. The bumblebees exposed to pesticides may not find
their food and hive, and even their motor nervous system can acutely be
affected. In this study, effects of some pesticides (abamectin, acetamiprid,
deltamethrin, imidacloprid) on bumblebees were investigated. The bumblebee
colonies were obtained from Koppert Biological Systems, Inc., Turkey. Six doses
of each pesticide were tested on motor behaviors of some extremities of the
bumblebees and bumblebees were fed on only 50% sucrose as a control group to
compare with pesticide applications. Pesticides were applied to bees by feeding
and spraying methods. Then, the situations of motor mobility of legs, antennae
and proboscis extension of the bumblebees exposed to pesticides were scored.
According to the results of the study, the pesticides used in the experiment
had an impact on motor nervous system of the bumblebees, and the most effective
pesticide was imidacloprid, followed by deltamethrin, acetamiprid, and
abamectin, respectively. These results show that imidacloprid, all doses,
demage basic motor coordination fundamental to locomotion and foraging and kill
at label dose.    

Keywords

Bumblebees, Pesticide, Imidacloprid, Proboscis extension reflex

Supporting Institution

Süleyman Demirel University Scientific Research Projects Coordination Unit

Project Number

4634-YL1-16

Thanks

The authors thank the Research and Technology Department of Süleyman Demirel University in Isparta, Turkey for financial support for this project (Project number: 4634-YL1-16).

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