First detection of the malaria vector Anopheles arabiensis in Côte d’Ivoire: urbanization in question
Abstract Background Previous studies have revealed high malaria transmission in Bouaké, Côte d’Ivoire. The sociopolitical crisis in the country and the resulting environmental changes have raised the need to update existing knowledge on mosquito vector species and malaria transmission. Methods Adult...
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2022-09-01
|
| Series: | Malaria Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s12936-022-04295-3 |
| _version_ | 1818026023743127552 |
|---|---|
| author | Florence Fournet Akre M. Adja Kouassi A. Adou Milossé M. C. Dahoui Baba Coulibaly Konan F. Assouho Dounin D. Zoh Moussa Koné Aboubacar Koné Koffi L. Niamien Sylvie Cornelie Emmanuel Tia Nicolas Moiroux |
| author_facet | Florence Fournet Akre M. Adja Kouassi A. Adou Milossé M. C. Dahoui Baba Coulibaly Konan F. Assouho Dounin D. Zoh Moussa Koné Aboubacar Koné Koffi L. Niamien Sylvie Cornelie Emmanuel Tia Nicolas Moiroux |
| author_sort | Florence Fournet |
| collection | DOAJ |
| description | Abstract Background Previous studies have revealed high malaria transmission in Bouaké, Côte d’Ivoire. The sociopolitical crisis in the country and the resulting environmental changes have raised the need to update existing knowledge on mosquito vector species and malaria transmission. Methods Adult mosquitoes were caught using the human landing catch (HLC) sampling method in Bouaké. They were collected in six districts representative of the diversity in urban landscapes. Sampling points were selected along the water network crossing the city and monitored from 2020 to 2021 to detect the presence of anopheline larvae. PCR techniques were used to ascertain the species of the Anopheles gambiae complex, Plasmodium falciparum sporozoite infection in a subset of Anopheles vectors, and insecticide resistance mechanisms in Anopheles arabiensis only. Results A total of 4599 Anopheles mosquitoes were collected and then identified. Anopheles gambiae sensu lato (s.l.) made up the majority of the whole collection (99%) while Anopheles funestus (0.7%), Anopheles ziemanni (0.2%), Anopheles pharoensis (0.2%) represented the remaining proportion of collection. Among the Anopheles gambiae complex, three species were identified namely An. gambiae sensu stricto (45.9%), Anopheles coluzzii (52.2%), and Anopheles arabiensis (1.9%). The first two species had already been collected in Bouaké, however this is the first time that An. arabiensis is reported in Côte d’Ivoire. Anopheles arabiensis was also collected during the larval surveys in a similar proportion (1.1%) in the same areas as the adults. Conclusions This study detected the presence of An. arabiensis for the first time in Côte d’Ivoire. This species was found quite far from its usual geographic area and its expansion could be linked to the urbanization process. Although no An. arabiensis was found to be infected by Plasmodium sp., its role in malaria transmission in Bouaké has to be explored, particularly since its exophagic behaviour raises the issue of control measures and the use of insecticide-impregnated nets. The spread of this species in Côte d'Ivoire should be assessed through further research in additional towns in the country. |
| first_indexed | 2024-12-10T04:25:25Z |
| format | Article |
| id | doaj.art-e02502529e6b4f2881a79416721404fe |
| institution | Directory Open Access Journal |
| issn | 1475-2875 |
| language | English |
| last_indexed | 2024-12-10T04:25:25Z |
| publishDate | 2022-09-01 |
| publisher | BMC |
| record_format | Article |
| series | Malaria Journal |
| spelling | doaj.art-e02502529e6b4f2881a79416721404fe2022-12-22T02:02:18ZengBMCMalaria Journal1475-28752022-09-012111810.1186/s12936-022-04295-3First detection of the malaria vector Anopheles arabiensis in Côte d’Ivoire: urbanization in questionFlorence Fournet0Akre M. Adja1Kouassi A. Adou2Milossé M. C. Dahoui3Baba Coulibaly4Konan F. Assouho5Dounin D. Zoh6Moussa Koné7Aboubacar Koné8Koffi L. Niamien9Sylvie Cornelie10Emmanuel Tia11Nicolas Moiroux12MIVEGEC (Université de Montpellier, CNRS, IRD)Institut Pierre Richet, Institut National de Santé PubliqueMIVEGEC (Université de Montpellier, CNRS, IRD)MIVEGEC (Université de Montpellier, CNRS, IRD)Institut Pierre Richet, Institut National de Santé PubliqueInstitut Pierre Richet, Institut National de Santé PubliqueInstitut Pierre Richet, Institut National de Santé PubliqueCentre d’Entomologie Médicale Et VétérinaireInstitut Pierre Richet, Institut National de Santé PubliqueInstitut Pierre Richet, Institut National de Santé PubliqueMIVEGEC (Université de Montpellier, CNRS, IRD)Centre d’Entomologie Médicale Et VétérinaireMIVEGEC (Université de Montpellier, CNRS, IRD)Abstract Background Previous studies have revealed high malaria transmission in Bouaké, Côte d’Ivoire. The sociopolitical crisis in the country and the resulting environmental changes have raised the need to update existing knowledge on mosquito vector species and malaria transmission. Methods Adult mosquitoes were caught using the human landing catch (HLC) sampling method in Bouaké. They were collected in six districts representative of the diversity in urban landscapes. Sampling points were selected along the water network crossing the city and monitored from 2020 to 2021 to detect the presence of anopheline larvae. PCR techniques were used to ascertain the species of the Anopheles gambiae complex, Plasmodium falciparum sporozoite infection in a subset of Anopheles vectors, and insecticide resistance mechanisms in Anopheles arabiensis only. Results A total of 4599 Anopheles mosquitoes were collected and then identified. Anopheles gambiae sensu lato (s.l.) made up the majority of the whole collection (99%) while Anopheles funestus (0.7%), Anopheles ziemanni (0.2%), Anopheles pharoensis (0.2%) represented the remaining proportion of collection. Among the Anopheles gambiae complex, three species were identified namely An. gambiae sensu stricto (45.9%), Anopheles coluzzii (52.2%), and Anopheles arabiensis (1.9%). The first two species had already been collected in Bouaké, however this is the first time that An. arabiensis is reported in Côte d’Ivoire. Anopheles arabiensis was also collected during the larval surveys in a similar proportion (1.1%) in the same areas as the adults. Conclusions This study detected the presence of An. arabiensis for the first time in Côte d’Ivoire. This species was found quite far from its usual geographic area and its expansion could be linked to the urbanization process. Although no An. arabiensis was found to be infected by Plasmodium sp., its role in malaria transmission in Bouaké has to be explored, particularly since its exophagic behaviour raises the issue of control measures and the use of insecticide-impregnated nets. The spread of this species in Côte d'Ivoire should be assessed through further research in additional towns in the country.https://doi.org/10.1186/s12936-022-04295-3Anopheles arabiensisBouakéCôte d’Ivoire |
| spellingShingle | Florence Fournet Akre M. Adja Kouassi A. Adou Milossé M. C. Dahoui Baba Coulibaly Konan F. Assouho Dounin D. Zoh Moussa Koné Aboubacar Koné Koffi L. Niamien Sylvie Cornelie Emmanuel Tia Nicolas Moiroux First detection of the malaria vector Anopheles arabiensis in Côte d’Ivoire: urbanization in question Malaria Journal Anopheles arabiensis Bouaké Côte d’Ivoire |
| title | First detection of the malaria vector Anopheles arabiensis in Côte d’Ivoire: urbanization in question |
| title_full | First detection of the malaria vector Anopheles arabiensis in Côte d’Ivoire: urbanization in question |
| title_fullStr | First detection of the malaria vector Anopheles arabiensis in Côte d’Ivoire: urbanization in question |
| title_full_unstemmed | First detection of the malaria vector Anopheles arabiensis in Côte d’Ivoire: urbanization in question |
| title_short | First detection of the malaria vector Anopheles arabiensis in Côte d’Ivoire: urbanization in question |
| title_sort | first detection of the malaria vector anopheles arabiensis in cote d ivoire urbanization in question |
| topic | Anopheles arabiensis Bouaké Côte d’Ivoire |
| url | https://doi.org/10.1186/s12936-022-04295-3 |
| work_keys_str_mv | AT florencefournet firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT akremadja firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT kouassiaadou firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT milossemcdahoui firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT babacoulibaly firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT konanfassouho firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT dounindzoh firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT moussakone firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT aboubacarkone firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT koffilniamien firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT sylviecornelie firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT emmanueltia firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion AT nicolasmoiroux firstdetectionofthemalariavectoranophelesarabiensisincotedivoireurbanizationinquestion |