Research within 3 general categories:
1) Effects of Pesticides on Honey Bees. Study on the sublethal effects of bifenthrin and deltamethrin on fecundity, growth, and development of Apis mellifera. We research the effects of bifenthrin, deltamethrin and fluvalinate on excitability of the isolated neurons by the patch-clamp.
2) Effects of Transgenic crop on Honey Bees. We research the effects of the Cry1Ah toxin and Bt corn pollen on honeybees, including Bt cry1Ah toxin on workers of Apis mellifera and Apis cerana, Bt cry1Ah corn pollen on larvae of Apis mellifera and Apis cerana, and effects of transgenic Bt cry1Ah corn on Apis mellifera colony in field cages.
3) Honeybees pests. Study on identification, distribution and management of Varroa, Tropilaelaps, Nosema. Study on diagnosis of virus. We breed great wax moth in the laboratory and evaluated Bt toxin as a potential control for wax moth larvae in laboratory.
 Yang Y, Ma SL, Yan ZX, Liu F, Diao QY, Dai PL*. Effects of three common pesticides on survival, food consumption and midgut bacterial communities of adult workers Apis cerana and Apis mellifera. Environmental Pollution, 2019, 249: 860-867.
 Dai PL*, Wang MY, Geng LL, Yan ZX, Yang Y, Guo R, Ma SL, Diao QY*. The effect of Bt Cry9Ee toxin on honey bee brood and adults reared in vitro, Apis mellifera (Hymenoptera: Apidae). Ecotoxicology and Environmental Safety, 2019, 181: 381-387.
 Dai PL*, Yan ZX, Ma SL, Yang Y, Wang Q, Hou CS, Wu YY, Liu YJ, Diao QY*. The herbicide glyphosate negatively affects midguts bacterial communities and survival of honey bee during larvae reared in vitro. Journal Agricultural and Food Chemistry, 2018, 66: 7786-7793.
 Dai PL*, Jack CJ, Mortensen AN, Bustamante TA, Bloomquist JR, Ellis JD*. Chronic toxicity of clothianidin, imidacloprid, chlorpyrifos, and dimethoate to Apis mellifera L. larvae reared in vitro. Pest Management Science, 2018, DOI: 10.1002/ps.5124
 Dai PL*, Jack CJ, Mortensen AN, Bloomquist JR, Ellis JD*. The impacts of chlorothalonil and diflubenzuron on Apis mellifera L. larvae reared in vitro. Ecotoxicology and Environmental Safety, 2018, 164: 283-288.
 Dai PL*, Jack CJ, Mortensen AN, Bustamante TA, Ellis JD*. Chronic toxicity of amitraz, coumaphos and fluvalinate to Apis mellifera L. larvae reared in vitro. Scientific Reports, 2018, 8:5635.
 Jia HR, Dai PL*, Geng LL, Jack CJ, Li YH, Wu YY, Diao QY, Ellis JD. No effect of Bt Cry1Ie toxin on bacterial diversity in the midgut of the Chinese honey bees, Apis cerana cerana (Hymenoptera, Apidae). Scientific Reports, 2017, 7:41688.
 Dai PL*, Jack CJ, Mortensen AN, Ellis JD*. Acute toxicity of five pesticides to Apis mellifera larvae reared in vitro. Pest Manag Sci, 2017, 73：2282-2286.
 Dai PL*, Jia HR, Jack CJ, Geng LL, Liu F, Hou CS, Diao QY, Ellis J D. Bt Cry1Ie toxin does not impact the survival and pollen consumption of Chinese honey bees, Apis cerana cerana (Hymenoptera, Apidae). Journal of Economic Entomology, 2016, 109 (6): 2259-2263.
 Jia HR, Geng LL, Wang Q, Diao QY, Zhou T, Dai PL*. The effects of Bt Cry1Ie toxin on bacterial diversity in the midgut of Apis mellifera ligustica (Hymenoptera: Apidae). Scientific Reports, 2016, 6, 24664.
 Dai PL, Jia HR, Geng LL, Diao QY*. Bt toxin Cry1Ie causes no negative effects on survival, pollen consumption, or olfactory learning in worker honey Bees (Hymenoptera: Apidae). Journal of Economic Entomology, 2016, 109 (3): 1028-1033.
 Dai PL, Zhou W, Zhang J, Lang ZH, Zhou T*, Wang Q, Cui HJ, Jiang WY, Wu YY. Effects of Bt cry1Ah corn pollen on immature workers of Apis cerana cerana. Journal of Apicultural Research, 2015, 54(1):72-76.
 Dai PL, Zhou W, Zhang J, Wang Q, Jiang WY, Cui HJ, Sun JH, Wu YY, Zhou T*. The effects of Bt Cry1Ah toxin on worker honeybees (Apis mellifera ligustica and Apis cerana cerana), Apidologie, 2012, 43(4), 384-391.
 Dai PL, Zhou W, Zhang J, Cui HJ, Wang Q, Jiang WY, Sun JH, Wu YY, Zhou T*. Field assessment of Bt cry1Ah corn pollen on the survival, development and behavior of Apis mellifera ligustica, Ecotoxicology and Environmental Safety, 2012, 79, 232-237.
 Dai PL, Wang Q, Sun JH, Liu F, Wang X, Wu YY, Zhou T*. Effects of sublethal concentrations of bifenthrin and deltamethrin on fecundity, growth, and development of the honeybee Apis mellifera ligustica. Environmental Toxicology and Chemistry, 2010, 29(3): 644-649.
I am the secretary of bee protection committee of China apicultural association, I helped director organize academic seminar each year.
I took lectures about honeybee pests for the beekeepers in China, about 2300 from Beijing, Hebei province, Shanxi province and Hubei province in recent 5 years.
As the member of bee protection lab, I help beekeepers in the diagnosis of more than 200 samples each year. I reply beekeepers questions about bee disease more than 300 times each year.