[ Abondance et richesse des culicidés dans l’arrondissement communale Niamey V (Niger) ]
Volume 63, Issue 2, November 2022, Pages 137–145
Baoua Idi Mahaman Toudou1, Mahamadou Amadou Nafissatou2, and Ali Doumma3
1 Université Abdou Moumouni de Niamey, faculté de Sciences et Techniques, Département de biologie, BP 10662, Niamey, Niger
2 Université Abdou Moumouni de Niamey, faculté de Sciences et Techniques, Département de biologie, BP 10662, Niamey, Niger
3 Université Abdou Moumouni de Niamey, faculté de Sciences et Techniques, Département de biologie, BP 10662, Niamey, Niger
Original language: French
Copyright © 2022 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Throughout the year, the population of the right bank (Niamey) is confronted with the diseases and nuisances of culicidae. This study aims to make a systematic inventory of mosquitoes, to study their abundance and their specific richness. Mosquito larvae were collected using the dipping method, over the period July 2021 to June 2022, in Lake Lamordé and the rice fields of Kirkissoy. Stage three and four larvae were sorted and deposited in transparent tubs containing bedding water and fed. Emerged mosquitoes were counted, identified morphologically with a binocular loupe and a culicid identification key. During this study, 3947 larvae were collected of which 3033 evolved to the adult stage, i.e. an emergence rate of 76.84%. The genus Anopheles is more abundant in the lake (n=1238). In the rice fields, the genus Culex dominated (n=402). Statistical analysis showed that the mosquitoes were not evenly distributed in space and time. The taxonomic study identified 11 genera and species at the two sites. These were Anopheles gambiae, Anopheles pharaonsis, Anopheles squamosus, Anopheles rufipes, Anopheles nili, Anopheles funestus, Culex tritaenyohinchus, Culex decens, Culex aurentapex, Culex quinquefasciatus and Aedes aegypti. These results show that mosquitoes proliferate over a long period of the year and that appropriate control measures must be taken to prevent diseases and avoid nuisance caused by them.
Author Keywords: Culicidae, abundance, genus, collection, larva.
Volume 63, Issue 2, November 2022, Pages 137–145
Baoua Idi Mahaman Toudou1, Mahamadou Amadou Nafissatou2, and Ali Doumma3
1 Université Abdou Moumouni de Niamey, faculté de Sciences et Techniques, Département de biologie, BP 10662, Niamey, Niger
2 Université Abdou Moumouni de Niamey, faculté de Sciences et Techniques, Département de biologie, BP 10662, Niamey, Niger
3 Université Abdou Moumouni de Niamey, faculté de Sciences et Techniques, Département de biologie, BP 10662, Niamey, Niger
Original language: French
Copyright © 2022 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Throughout the year, the population of the right bank (Niamey) is confronted with the diseases and nuisances of culicidae. This study aims to make a systematic inventory of mosquitoes, to study their abundance and their specific richness. Mosquito larvae were collected using the dipping method, over the period July 2021 to June 2022, in Lake Lamordé and the rice fields of Kirkissoy. Stage three and four larvae were sorted and deposited in transparent tubs containing bedding water and fed. Emerged mosquitoes were counted, identified morphologically with a binocular loupe and a culicid identification key. During this study, 3947 larvae were collected of which 3033 evolved to the adult stage, i.e. an emergence rate of 76.84%. The genus Anopheles is more abundant in the lake (n=1238). In the rice fields, the genus Culex dominated (n=402). Statistical analysis showed that the mosquitoes were not evenly distributed in space and time. The taxonomic study identified 11 genera and species at the two sites. These were Anopheles gambiae, Anopheles pharaonsis, Anopheles squamosus, Anopheles rufipes, Anopheles nili, Anopheles funestus, Culex tritaenyohinchus, Culex decens, Culex aurentapex, Culex quinquefasciatus and Aedes aegypti. These results show that mosquitoes proliferate over a long period of the year and that appropriate control measures must be taken to prevent diseases and avoid nuisance caused by them.
Author Keywords: Culicidae, abundance, genus, collection, larva.
Abstract: (french)
Tout au long de l’année, la population de la rive droite (Niamey) est confrontée aux maladies et aux nuisances des culicidés. Cette étude vise à faire un inventaire systématique des moustiques, d’étudier leur abondance et leur richesse spécifique. Des larves de moustiques ont été collectées par la méthode de dipping, sur la période allant de juillet 2021 à juin 2022, dans le lac de Lamordé et les rizières de Kirkissoy. Les larves du stade trois et quatre ont été triées et déposées dans des bacs transparents contenants de l’eau du gîte et nourries. Les moustiques émergés ont été dénombrés, identifiés morphologiquement avec une loupe binoculaire et une clé d’identification des culicidés. Au cours de cette étude, 3947 larves ont été collectées dont 3033 ont évolué jusqu’au stade adulte soit un taux d’émergence de 76,84%. Le genre Anophèles est plus abondant dans le lac (n=1238). Au niveau des rizières, c’est le genre culex qui a dominé (n=402). L’analyse statistique a montré que les moustiques ne sont pas repartis de façon équitable dans l’espace et dans le temps. L’étude taxonomique a permis d’identifier 11 genres et espèces au niveau des deux sites. Il s’agit de Anophèles gambiae, Anophèles pharaonsis, Anophèles squamosus, Anophèles rufipes, Anophèles nili, Anophèles funestus, Culex tritaenyohinchus, Culex decens, Culex aurentapex, Culex quinquefasciatus et Aedes aegypti. Ces résultats montrent que les moustiques prolifèrent sur une longue période de l’année et que des mesures de lutte appropriées doivent être prises pour prévenir les maladies et d’éviter nuisances occasionnées par ces deniers.
Author Keywords: Culicidés, abondance, genre, collecte, larve.
How to Cite this Article
Baoua Idi Mahaman Toudou, Mahamadou Amadou Nafissatou, and Ali Doumma, “Abundance and richness of culicidae in the Niamey V communal district (Niger),” International Journal of Innovation and Scientific Research, vol. 63, no. 2, pp. 137–145, November 2022.
