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Seasonal Differences in Density But Similar Competitive Impact of Aedes albopictus (Skuse) on Aedes aegypti (L.) in Rio de Janeiro, Brazil.
PLoS One 2016; 11(6):e0157120Plos

Abstract

Previous studies have shown that the negative effects of density of Ae. albopictus on Ae. aegypti exceed those of Ae. aegypti on Ae. albopictus for population growth, adult size, survivorship, and developmental rate. This competitive superiority has been invoked to explain the displacement of Ae. aegypti by Ae. albopictus in the southeastern USA. In Brazil, these species coexist in many vegetated suburban and rural areas. We investigated a related, but less-well-studied question: do effects of Ae. albopictus on Ae. aegypti larval development and survival occur under field conditions at realistic densities across multiple seasons in Brazil? We conducted additive competition experiments in a vegetated area of Rio de Janeiro where these species coexist. We tested the hypothesis that Ae. aegypti (the focal species, at a fixed density) suffers negative effects on development and survivorship across a gradient of increasing densities of Ae. albopictus (the associate species) in three seasons. The results showed statistically significant effects of both season and larval density on Ae. aegypti survivorship, and significant effects of season on development rate, with no significant season-density interactions. Densities of Aedes larvae in these habitats differed among seasons by a factor of up to 7x. Overall, Spring was the most favorable season for Ae. aegypti survivorship and development. Results showed that under natural conditions the negative competitive effects of Ae. albopictus on Ae. aegypti were expressed primarily as lower survivorship. Coexistence between Ae. aegypti and Ae. albopictus in vegetated areas is likely affected by seasonal environmental differences, such as detrital resource levels or egg desiccation, which can influence competition between these species. Interactions between these Aedes are important in Brazil, where both species are well established and widely distributed and vector dengue, Zika and chikungunya viruses.

Authors+Show Affiliations

Laboratório de Transmissores de Hematozoários - LATHEMA, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil. Núcleo Operacional Sentinela de Mosquitos Vetores - NOSMOVE, DIRAC - IOC - VPAAPS, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.Programa de Computação Científica, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.School of Biological Sciences, Behavior, Ecology, Evolution and Systematics Section, Illinois State University, Normal Illinois, United States of America.Florida Medical Entomology Laboratory, University of Florida, Vero Beach Florida, United States of America.Programa de Computação Científica, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.Núcleo Operacional Sentinela de Mosquitos Vetores - NOSMOVE, DIRAC - IOC - VPAAPS, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.Laboratório de Transmissores de Hematozoários - LATHEMA, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil. Núcleo Operacional Sentinela de Mosquitos Vetores - NOSMOVE, DIRAC - IOC - VPAAPS, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27322537

Citation

Camara, Daniel Cardoso Portela, et al. "Seasonal Differences in Density but Similar Competitive Impact of Aedes Albopictus (Skuse) On Aedes Aegypti (L.) in Rio De Janeiro, Brazil." PloS One, vol. 11, no. 6, 2016, pp. e0157120.
Camara DC, Codeço CT, Juliano SA, et al. Seasonal Differences in Density But Similar Competitive Impact of Aedes albopictus (Skuse) on Aedes aegypti (L.) in Rio de Janeiro, Brazil. PLoS ONE. 2016;11(6):e0157120.
Camara, D. C., Codeço, C. T., Juliano, S. A., Lounibos, L. P., Riback, T. I., Pereira, G. R., & Honorio, N. A. (2016). Seasonal Differences in Density But Similar Competitive Impact of Aedes albopictus (Skuse) on Aedes aegypti (L.) in Rio de Janeiro, Brazil. PloS One, 11(6), pp. e0157120. doi:10.1371/journal.pone.0157120.
Camara DC, et al. Seasonal Differences in Density but Similar Competitive Impact of Aedes Albopictus (Skuse) On Aedes Aegypti (L.) in Rio De Janeiro, Brazil. PLoS ONE. 2016;11(6):e0157120. PubMed PMID: 27322537.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Seasonal Differences in Density But Similar Competitive Impact of Aedes albopictus (Skuse) on Aedes aegypti (L.) in Rio de Janeiro, Brazil. AU - Camara,Daniel Cardoso Portela, AU - Codeço,Claudia Torres, AU - Juliano,Steven A, AU - Lounibos,L Philip, AU - Riback,Thais Irene Souza, AU - Pereira,Glaucio Rocha, AU - Honorio,Nildimar Alves, Y1 - 2016/06/20/ PY - 2015/07/21/received PY - 2016/05/25/accepted PY - 2016/6/21/entrez PY - 2016/6/21/pubmed PY - 2017/7/18/medline SP - e0157120 EP - e0157120 JF - PloS one JO - PLoS ONE VL - 11 IS - 6 N2 - Previous studies have shown that the negative effects of density of Ae. albopictus on Ae. aegypti exceed those of Ae. aegypti on Ae. albopictus for population growth, adult size, survivorship, and developmental rate. This competitive superiority has been invoked to explain the displacement of Ae. aegypti by Ae. albopictus in the southeastern USA. In Brazil, these species coexist in many vegetated suburban and rural areas. We investigated a related, but less-well-studied question: do effects of Ae. albopictus on Ae. aegypti larval development and survival occur under field conditions at realistic densities across multiple seasons in Brazil? We conducted additive competition experiments in a vegetated area of Rio de Janeiro where these species coexist. We tested the hypothesis that Ae. aegypti (the focal species, at a fixed density) suffers negative effects on development and survivorship across a gradient of increasing densities of Ae. albopictus (the associate species) in three seasons. The results showed statistically significant effects of both season and larval density on Ae. aegypti survivorship, and significant effects of season on development rate, with no significant season-density interactions. Densities of Aedes larvae in these habitats differed among seasons by a factor of up to 7x. Overall, Spring was the most favorable season for Ae. aegypti survivorship and development. Results showed that under natural conditions the negative competitive effects of Ae. albopictus on Ae. aegypti were expressed primarily as lower survivorship. Coexistence between Ae. aegypti and Ae. albopictus in vegetated areas is likely affected by seasonal environmental differences, such as detrital resource levels or egg desiccation, which can influence competition between these species. Interactions between these Aedes are important in Brazil, where both species are well established and widely distributed and vector dengue, Zika and chikungunya viruses. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/27322537/Seasonal_Differences_in_Density_But_Similar_Competitive_Impact_of_Aedes_albopictus__Skuse__on_Aedes_aegypti__L___in_Rio_de_Janeiro_Brazil_ L2 - http://dx.plos.org/10.1371/journal.pone.0157120 DB - PRIME DP - Unbound Medicine ER -