Sex aggregation and species segregation cues in swarming mosquitoes: role of ground visual markers
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| Název: | Sex aggregation and species segregation cues in swarming mosquitoes: role of ground visual markers |
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| Autoři: | Poda, Serge, Nignan, Charles, Gnankiné, Olivier, Dabiré, Roch, Diabaté, Abdoulaye, Roux, Olivier |
| Přispěvatelé: | Institut de Recherche en Sciences de la Santé Bobo Dioulasso (INSSA), Université Nazi Boni (Bobo-Dioulasso) (UNB), Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD Occitanie ), Laboratoire d’Entomologie Fondamentale et Appliquée |Ouagadougou (LEFA), Université Joseph Ki-Zerbo de Ouagadougou = University of Ouagadougou (UJZK), Institut de Recherche en Sciences de la Santé (IRSS), Centre national de la recherche scientifique et technologique Ouagadougou (CNRST), Université de Dédougou (UDDG) |
| Zdroj: | ISSN: 1756-3305. |
| Informace o vydavateli: | CCSD BioMed Central |
| Rok vydání: | 2019 |
| Sbírka: | Université de Montpellier: HAL |
| Témata: | Anopheles, Mating, Sexual encounter, Speciation, Swarming behavior, Visual cues, MESH: Animals, MESH: Anopheles, MESH: Cues, MESH: Female, MESH: Male, MESH: Sexual Behavior, Animal, MESH: Vision, Ocular, MESH: Visual Perception, [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology, [SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis |
| Popis: | International audience ; Background: Mating swarm segregation in closely related insect species may contribute to reproductive isolation. Visual markers are used for swarm formation; however, it is unknown whether they play a key role in swarm location, species segregation and sex aggregation.Methods: Using two sympatric closely related species of the Anopheles gambiae complex, An. coluzzii and An. gambiae ( s.s. ), we investigated in both laboratory and semi-field conditions (i) whether males of the two species use visual markers (black cloths) to locate their swarm; and (ii) whether the presence/absence and size of the marker may differentially affect swarm characteristics. We also investigated whether conspecific virgin females use these markers to join male swarm sites.Results: We showed that males of the two species used visual markers but in different ways: An. coluzzii swarm right above the marker whereas An. gambiae ( s.s. ) locate their swarm at a constant distance of 76.4 ± 0.6 cm from a 20 × 20 cm marker in the laboratory setup and at 206 ± 6 cm from a 60 × 60 cm marker in the semi-field setup. Although increased marker size recruited more mosquitoes and consequently increased the swarm size in the two species, An. coluzzii swarms flew higher and were stretched both vertically and horizontally, while An. gambiae ( s.s. ) swarms were only stretched horizontally. Virgin females displayed a swarm-like behavior with similar characteristics to their conspecific males.Conclusions Our results provided experimental evidence that both An. coluzzii and An. gambiae ( s.s .) males use ground visual markers to form and locate their swarm at species-specific locations. Moreover, the marker size differentially affected swarm characteristics in the two species. Our results also showed that virgin females displayed a swarm-like behavior. However, these “swarms” could be due to the absence of males in our experimental conditions. Nevertheless, the fact that females displayed these “swarms” with the same characteristics ... |
| Druh dokumentu: | article in journal/newspaper |
| Jazyk: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/pmid/31842944; PUBMED: 31842944; PUBMEDCENTRAL: PMC6916054 |
| DOI: | 10.1186/s13071-019-3845-5 |
| Dostupnost: | https://hal.science/hal-04935167 https://hal.science/hal-04935167v1/document https://hal.science/hal-04935167v1/file/s13071-019-3845-5.pdf https://doi.org/10.1186/s13071-019-3845-5 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| Přístupové číslo: | edsbas.DBE8FD57 |
| Databáze: | BASE |
Nájsť tento článok vo Web of Science | Abstrakt: | International audience ; Background: Mating swarm segregation in closely related insect species may contribute to reproductive isolation. Visual markers are used for swarm formation; however, it is unknown whether they play a key role in swarm location, species segregation and sex aggregation.Methods: Using two sympatric closely related species of the Anopheles gambiae complex, An. coluzzii and An. gambiae ( s.s. ), we investigated in both laboratory and semi-field conditions (i) whether males of the two species use visual markers (black cloths) to locate their swarm; and (ii) whether the presence/absence and size of the marker may differentially affect swarm characteristics. We also investigated whether conspecific virgin females use these markers to join male swarm sites.Results: We showed that males of the two species used visual markers but in different ways: An. coluzzii swarm right above the marker whereas An. gambiae ( s.s. ) locate their swarm at a constant distance of 76.4 ± 0.6 cm from a 20 × 20 cm marker in the laboratory setup and at 206 ± 6 cm from a 60 × 60 cm marker in the semi-field setup. Although increased marker size recruited more mosquitoes and consequently increased the swarm size in the two species, An. coluzzii swarms flew higher and were stretched both vertically and horizontally, while An. gambiae ( s.s. ) swarms were only stretched horizontally. Virgin females displayed a swarm-like behavior with similar characteristics to their conspecific males.Conclusions Our results provided experimental evidence that both An. coluzzii and An. gambiae ( s.s .) males use ground visual markers to form and locate their swarm at species-specific locations. Moreover, the marker size differentially affected swarm characteristics in the two species. Our results also showed that virgin females displayed a swarm-like behavior. However, these “swarms” could be due to the absence of males in our experimental conditions. Nevertheless, the fact that females displayed these “swarms” with the same characteristics ... |
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| DOI: | 10.1186/s13071-019-3845-5 |