@article{10.11648/j.aje.20240803.13,
  author = {Taimanga and Moise Adamou and Georges Tchindebe and Moukhtar Mohammadou and Ousmana Youssoufa and Boris Fouelifack-Nintidem and Alice Virginie Tchiaze Ifoue and Andrea Sarah Kenne Toukem and Odette Massah Dabole and Oumarou Abdoul Aziz and Abraham Tchoubou-Sale and Sedrick Junior Tsekane and Daniel Kosini and Pharaon Auguste Mbianda and Martin Kenne},
  title = {Effect of the Botanical Insecticides on Amegilla Friese, 1897 (Hymenoptera: Apidae) Foraging on the Cowpea Flowers in Dang (Adamaoua, North-Cameroon)
},
  journal = {American Journal of Entomology},
  volume = {8},
  number = {3},
  pages = {76-101},
  doi = {10.11648/j.aje.20240803.13},
  url = {https://doi.org/10.11648/j.aje.20240803.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aje.20240803.13},
  abstract = {Synthetic pesticides present risks of pollution of the environment, humans and livestock and the alternative proposed today is to use botanical extracts in the fields against crop pests. But in North Cameroon, little information exists concerning the effect of these extracts on useful pollinating insects in general and no information exists in particular on foragers of the genus Amegilla Friese, 1897 (Apidae: Apinae: Anthophorini). The frequency and foraging activities of Amegilla, on newly blooming flowers of Vigna unguiculata (L.) Walp., 1843 (Fabales: Fabaceae) were recorded during five consecutive days in 2021 and 2022 planting campaigns. Plants were divided into untreated plots and plots treated using the synthetic insecticide Parastar (l p.c..ha-1) or 10%, 20% and 30% aqueous leaf extracts of Calotropis procera (Aiton) Aiton, 1811 (Gentianales: Apocynaceae), Eucalyptus camaldulensis Dehnh., 1832 (Myrtales: Myrtaceae) and Tithonia diversifolia (Hemsley) Gray, 1883 (Asterales: Asteraceae) respectively. Among 8,987 insects collected (48.9% in 2021), Amegila calens Le Peletier. 1841 with stockier foragers (2021 campaign: 2.2% of the total collection, entomophily FA. calens=4.5%; 2022 campaign: 0.7%, FA. calens=1.3%; pooled campaigns: 2.9%, FA. calens=2.9%) and Amegilla sp. with slender foragers (2021: 3.8%, FAmegilla sp.=7.7%; 2022: no data) were recorded. Foragers started activity from 6 a.m. and stopped foraging before noon, with a peak of activity in 8 to 9 a.m. time slot for A. calens and 10 to 11 a.m. time slot for Amegilla sp.. During the five consecutive days from the first blooming day of the flowers, 598 visits (89.8% in 2021 and 10.2% in 2022) were recorded with a peak of visits during the 3rd day and then declined until it stopped during the 5th day. Treatments including the synthetic insecticide (which was the most repellent to the wild bees), did not significantly reduce the frequency of visits. But 20% aqueous extract of Ca. procera showed a significant increased of the mean duration of visits of the bees, compare to the results recorded in Parastar-treated plots. Therefore, the tested extracts, especially 20% aqueous leaves extract of Ca. procera may be recommended to control field insect pests and for preservation of foraging activities of Amegilla genus.
},
 year = {2024}
}

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TY  - JOUR
T1  - Effect of the Botanical Insecticides on Amegilla Friese, 1897 (Hymenoptera: Apidae) Foraging on the Cowpea Flowers in Dang (Adamaoua, North-Cameroon)

AU  - Taimanga
AU  - Moise Adamou
AU  - Georges Tchindebe
AU  - Moukhtar Mohammadou
AU  - Ousmana Youssoufa
AU  - Boris Fouelifack-Nintidem
AU  - Alice Virginie Tchiaze Ifoue
AU  - Andrea Sarah Kenne Toukem
AU  - Odette Massah Dabole
AU  - Oumarou Abdoul Aziz
AU  - Abraham Tchoubou-Sale
AU  - Sedrick Junior Tsekane
AU  - Daniel Kosini
AU  - Pharaon Auguste Mbianda
AU  - Martin Kenne
Y1  - 2024/08/27
PY  - 2024
N1  - https://doi.org/10.11648/j.aje.20240803.13
DO  - 10.11648/j.aje.20240803.13
T2  - American Journal of Entomology
JF  - American Journal of Entomology
JO  - American Journal of Entomology
SP  - 76
EP  - 101
PB  - Science Publishing Group
SN  - 2640-0537
UR  - https://doi.org/10.11648/j.aje.20240803.13
AB  - Synthetic pesticides present risks of pollution of the environment, humans and livestock and the alternative proposed today is to use botanical extracts in the fields against crop pests. But in North Cameroon, little information exists concerning the effect of these extracts on useful pollinating insects in general and no information exists in particular on foragers of the genus Amegilla Friese, 1897 (Apidae: Apinae: Anthophorini). The frequency and foraging activities of Amegilla, on newly blooming flowers of Vigna unguiculata (L.) Walp., 1843 (Fabales: Fabaceae) were recorded during five consecutive days in 2021 and 2022 planting campaigns. Plants were divided into untreated plots and plots treated using the synthetic insecticide Parastar (l p.c..ha-1) or 10%, 20% and 30% aqueous leaf extracts of Calotropis procera (Aiton) Aiton, 1811 (Gentianales: Apocynaceae), Eucalyptus camaldulensis Dehnh., 1832 (Myrtales: Myrtaceae) and Tithonia diversifolia (Hemsley) Gray, 1883 (Asterales: Asteraceae) respectively. Among 8,987 insects collected (48.9% in 2021), Amegila calens Le Peletier. 1841 with stockier foragers (2021 campaign: 2.2% of the total collection, entomophily FA. calens=4.5%; 2022 campaign: 0.7%, FA. calens=1.3%; pooled campaigns: 2.9%, FA. calens=2.9%) and Amegilla sp. with slender foragers (2021: 3.8%, FAmegilla sp.=7.7%; 2022: no data) were recorded. Foragers started activity from 6 a.m. and stopped foraging before noon, with a peak of activity in 8 to 9 a.m. time slot for A. calens and 10 to 11 a.m. time slot for Amegilla sp.. During the five consecutive days from the first blooming day of the flowers, 598 visits (89.8% in 2021 and 10.2% in 2022) were recorded with a peak of visits during the 3rd day and then declined until it stopped during the 5th day. Treatments including the synthetic insecticide (which was the most repellent to the wild bees), did not significantly reduce the frequency of visits. But 20% aqueous extract of Ca. procera showed a significant increased of the mean duration of visits of the bees, compare to the results recorded in Parastar-treated plots. Therefore, the tested extracts, especially 20% aqueous leaves extract of Ca. procera may be recommended to control field insect pests and for preservation of foraging activities of Amegilla genus.

VL  - 8
IS  - 3
ER  - 

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