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- Title
IMPACT OF INSECTICIDES ON FEW COLONY STRENGTH PARAMETERS OF APIS MELLIFERA (HYMENOPTERA: APIDAE).
- Authors
Shurjeel, Hafiz Khurram; Aqueel, Muhammad Anjum; Afzal, Muhammad; Raza, Abu Bakar Muhammad; Ashraf, Ejaz
- Abstract
The honeybees (Apis mellifera L.) are broadly renowned beneficial organisms with respect to biological, ecological and scientific significance by generating economically important products like royal jelly, pollen, propolis, honey and wax. These critical pollinators are being affected by the chemical compounds used for controlling the insects -pests of agricultural crops. We performed experiments by sowing of sunflower crop at (500 sq. m) field and applied the pesticides early in the morning at flowering stage on crop and the bees were exposed to the pesticides this way. Here we hypothesized that insecticide's exposure affects the colony strength parameters of honey bees. To test this hypothesis we examined the effects of different chemical compounds from different groups (Nitenpyram @10%SL/acre), (Cyhalothrin @200ml/acre-), (Emamectin benzoate @ 200ml/acre) on the adult bees, guard bees, forager bees, honey production, egg presence, egg hatching, larval duration, pupal period and adult lifespan. The data for the, forager bees was recorded two times a day 11:00 am and 2:00 pm and guard bees were collected once a day at 12:00 pm while he data for honey production was done after one month. The adult bees, guard bees and forager bees were observed dying greatly due to emamectin benzoate as compared to the other insecticides. The honey production in the treated colonies was being affected more by the insecticide cyhalothrin. The nitenpyram and cyhalothrin were more toxic for the egg presence and eggs hatching. The emamectin benzoate and cyhalothrin found toxic for pupal stage of honey bees. The timely adult emergence, new emerging bees and adult longevity were being affected extensively by nitenpyram.
- Subjects
HONEYBEES; INSECTICIDES; PROPOLIS; CYHALOTHRIN; EMAMECTIN benzoate
- Publication
Pakistan Entomologist, 2019, Vol 41, Issue 2, p133
- ISSN
1017-1827
- Publication type
Article