The Impact of Insecticide Pre-Exposure on Longevity, Feeding Succession, and Egg Batch Size of Wild Anopheles gambiae s.l.
Background. Insecticide resistance among the vector population is the main threat to existing control tools available. The current vector control management options rely on applications of recommended public health insecticides, mainly pyrethroids through long-lasting insecticidal nets (LLINs) and i...
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ftdoajarticles:oai:doaj.org/article:2445514b5e2747ebb34cbf92eca44dfa 2024-09-09T19:27:32+00:00 The Impact of Insecticide Pre-Exposure on Longevity, Feeding Succession, and Egg Batch Size of Wild Anopheles gambiae s.l. Grace Msangi Moses I. Olotu Aneth M. Mahande Anitha Philbert Eliningaya J. Kweka 2020-01-01T00:00:00Z https://doi.org/10.1155/2020/8017187 https://doaj.org/article/2445514b5e2747ebb34cbf92eca44dfa EN eng Wiley http://dx.doi.org/10.1155/2020/8017187 https://doaj.org/toc/1687-9686 https://doaj.org/toc/1687-9694 1687-9686 1687-9694 doi:10.1155/2020/8017187 https://doaj.org/article/2445514b5e2747ebb34cbf92eca44dfa Journal of Tropical Medicine, Vol 2020 (2020) Arctic medicine. Tropical medicine RC955-962 article 2020 ftdoajarticles https://doi.org/10.1155/2020/8017187 2024-08-05T17:48:44Z Background. Insecticide resistance among the vector population is the main threat to existing control tools available. The current vector control management options rely on applications of recommended public health insecticides, mainly pyrethroids through long-lasting insecticidal nets (LLINs) and indoor residual spraying (IRS). Regular monitoring of insecticide resistance does not provide information on important factors that affect parasite transmission. Such factors include vector longevity, vector competence, feeding success, and fecundity. This study investigated the impacts of insecticide resistance on longevity, feeding behaviour, and egg batch size of Anopheles gambiae s.l. Method. The larval sampling was conducted in rice fields using a standard dipper (350 ml) and reared to adults in field insectary. A WHO susceptibility test was conducted using standard treated permethrin (0.75%) and deltamethrin (0.05%) papers. The susceptible Kisumu strain was used for reference. Feeding succession and egg batch size were monitored for all survivors and control. Results. The results revealed that mortality rates declined by 52.5 and 59.5% for permethrin and deltamethrin, respectively. The mortality rate for the Kisumu susceptible strain was 100%. The survival rates of wild An. gambiae s.l. was between 24 and 27 days. However, the Kisumu susceptible strain blood meal feeding was significantly higher than resistant colony (t = 2.789, df = 21, P=0.011). Additionally, the susceptible An. gambiae s.s. laid more eggs than the resistant An.gambiae s.l. colony (Χ2 = 1366, df = 1, P≤0.05). Conclusion. It can, therefore, be concluded that the wild An. gambiae s.l. had increased longevity, blood feeding, and small egg batch size compared to Kisumu susceptible colonies. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Journal of Tropical Medicine 2020 1 8 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Arctic medicine. Tropical medicine RC955-962 |
spellingShingle |
Arctic medicine. Tropical medicine RC955-962 Grace Msangi Moses I. Olotu Aneth M. Mahande Anitha Philbert Eliningaya J. Kweka The Impact of Insecticide Pre-Exposure on Longevity, Feeding Succession, and Egg Batch Size of Wild Anopheles gambiae s.l. |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 |
description |
Background. Insecticide resistance among the vector population is the main threat to existing control tools available. The current vector control management options rely on applications of recommended public health insecticides, mainly pyrethroids through long-lasting insecticidal nets (LLINs) and indoor residual spraying (IRS). Regular monitoring of insecticide resistance does not provide information on important factors that affect parasite transmission. Such factors include vector longevity, vector competence, feeding success, and fecundity. This study investigated the impacts of insecticide resistance on longevity, feeding behaviour, and egg batch size of Anopheles gambiae s.l. Method. The larval sampling was conducted in rice fields using a standard dipper (350 ml) and reared to adults in field insectary. A WHO susceptibility test was conducted using standard treated permethrin (0.75%) and deltamethrin (0.05%) papers. The susceptible Kisumu strain was used for reference. Feeding succession and egg batch size were monitored for all survivors and control. Results. The results revealed that mortality rates declined by 52.5 and 59.5% for permethrin and deltamethrin, respectively. The mortality rate for the Kisumu susceptible strain was 100%. The survival rates of wild An. gambiae s.l. was between 24 and 27 days. However, the Kisumu susceptible strain blood meal feeding was significantly higher than resistant colony (t = 2.789, df = 21, P=0.011). Additionally, the susceptible An. gambiae s.s. laid more eggs than the resistant An.gambiae s.l. colony (Χ2 = 1366, df = 1, P≤0.05). Conclusion. It can, therefore, be concluded that the wild An. gambiae s.l. had increased longevity, blood feeding, and small egg batch size compared to Kisumu susceptible colonies. |
format |
Article in Journal/Newspaper |
author |
Grace Msangi Moses I. Olotu Aneth M. Mahande Anitha Philbert Eliningaya J. Kweka |
author_facet |
Grace Msangi Moses I. Olotu Aneth M. Mahande Anitha Philbert Eliningaya J. Kweka |
author_sort |
Grace Msangi |
title |
The Impact of Insecticide Pre-Exposure on Longevity, Feeding Succession, and Egg Batch Size of Wild Anopheles gambiae s.l. |
title_short |
The Impact of Insecticide Pre-Exposure on Longevity, Feeding Succession, and Egg Batch Size of Wild Anopheles gambiae s.l. |
title_full |
The Impact of Insecticide Pre-Exposure on Longevity, Feeding Succession, and Egg Batch Size of Wild Anopheles gambiae s.l. |
title_fullStr |
The Impact of Insecticide Pre-Exposure on Longevity, Feeding Succession, and Egg Batch Size of Wild Anopheles gambiae s.l. |
title_full_unstemmed |
The Impact of Insecticide Pre-Exposure on Longevity, Feeding Succession, and Egg Batch Size of Wild Anopheles gambiae s.l. |
title_sort |
impact of insecticide pre-exposure on longevity, feeding succession, and egg batch size of wild anopheles gambiae s.l. |
publisher |
Wiley |
publishDate |
2020 |
url |
https://doi.org/10.1155/2020/8017187 https://doaj.org/article/2445514b5e2747ebb34cbf92eca44dfa |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Tropical Medicine, Vol 2020 (2020) |
op_relation |
http://dx.doi.org/10.1155/2020/8017187 https://doaj.org/toc/1687-9686 https://doaj.org/toc/1687-9694 1687-9686 1687-9694 doi:10.1155/2020/8017187 https://doaj.org/article/2445514b5e2747ebb34cbf92eca44dfa |
op_doi |
https://doi.org/10.1155/2020/8017187 |
container_title |
Journal of Tropical Medicine |
container_volume |
2020 |
container_start_page |
1 |
op_container_end_page |
8 |
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1809896962923692032 |