Impact of Neem Oil on Developmental Stages of Honey Bee Apis mellifera L.

Authors

  • Kaur G. Department of Entomology, Punjab Agricultural University Ludhiana, 141004, Punjab
  • Singh R. PG Department of Agriculture, Khalsa College, Amritsar, 143002, Punjab
  • Singh A. Department of Agriculture, Khalsa College Garhdiwala, Hoshiarpur, 144207, Punjab

DOI:

https://doi.org/10.55446/IJE.2021.133

Keywords:

Apis mellifera, neem oil, developmental stages, comb cells, brood, hives, single exposure, multiple exposure, pupae, adult, larvae, emergence, survival

Abstract

Toxicity of neem oil on developmental stages of Apis mellifera L. was evaluated by applying three concentrations within the marked comb cells with micropipette as single (applied only once) and multiple exposures (at one day interval up to capping of cells) on different age groups of larvae (1-2, 3-4 and 5-6 days). Results revealed that maximum survival was observed in controls (both negative and positive) and at par with 0.05% (T1) and 0.1 % (T2) concentrations. Minimum survival of larval stage was found in 1% (T3). Same trend was also observed in emerged pupae (CD=17.9) and in mortality of adult bees (CD=15.3). Significant difference in the survival of larval (p<0.05), emerged pupae (p<0.05) and mortality of adult (p<0.05) honey bees was found within stages originating from treated larvae. Both in single or multiple doses, it was found that larvae treated at 1-2 days age group was significantly affected as compared to other stages.

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Published

2022-12-27

How to Cite

G., K., R., S., & A., S. (2022). Impact of Neem Oil on Developmental Stages of Honey Bee <i>Apis mellifera</i> L. Indian Journal of Entomology, 84(4), 783–787. https://doi.org/10.55446/IJE.2021.133

Issue

Section

Research Articles

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