Asymmetrical Competition between Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) Coexisting in Breeding Sites

Santana-Martínez, Juan C.; Molina, Jorge; Dussán, Jenny

doi:10.3390/insects8040111

Cited by 19 publications

(16 citation statements)

References 31 publications

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“…Other investigators have observed that A . aegypti larvae are not always food limited in their normal environment [ 4 , 7 , 10 , 193 , 194 ].…”

Section: Discussionmentioning

confidence: 99%

Competition among Aedes aegypti larvae

Steinwascher

2018

PLoS ONE

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Adult Aedes aegypti mosquitoes are important vectors of human disease. The size of the adult female affects her success, fitness, and ability to transmit diseases. The size of the adults is determined during the aquatic larval stage. Competition among larvae for food influences the size of the pupa and thus the adult. In these experiments, the food level (mg/larva) and the density (larvae/vial) both affect intraspecific competition, which shows up as the interaction of the two factors. Furthermore, the total food per vial affects the nature of competition among the larvae, also apparent in the interaction of food and density. Male larvae are affected by the percent of males in the vial, but females are not. Seven biologically significant dependent variables were examined, and the data analyzed by multivariate analysis of variance to gain insight into the relationships among the variables and the effects of these factors on the larvae as they grew in small containers. Male and female larvae compete differently from one another for the particulate yeast cells in this experiment; female larvae outcompete males through larger size and by retaining cells within their gut at low total food levels. Under conditions of more intense competition, the pupal masses of both males and females are smaller, so the effect of competition is a reduced apparent food level. The age at pupation is also affected by food and density. Across the twenty treatment combinations of food/larva and larvae/vial, female larvae grew as though there were six different ecological environments while male larvae grew as though there were only four different environments. No interference competition was observed. Eradication efforts aimed at adult populations of this mosquito may inadvertently increase the size and robustness of the next generation of larvae, resulting in a subsequent adult population increase in the second generation.

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“…Other investigators have observed that A . aegypti larvae are not always food limited in their normal environment [ 4 , 7 , 10 , 193 , 194 ].…”

Section: Discussionmentioning

confidence: 99%

Competition among Aedes aegypti larvae

Steinwascher

2018

PLoS ONE

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“…aegypti mortality. Santana-Martínez et al (2017), showed that Ae. aegypti is a superior resource competitor and appears to be capable of competitively affecting Cx.…”

Section: Discussionmentioning

confidence: 99%

Efficacy ofLysinibacillus sphaericusagainst mixed-cultures of field-collected and laboratory larvae ofAedes aegyptiandCulex quinquefasciatus

Santana-Martínez

Silva

Dussán

2018

Bull. Entomol. Res.

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Lysinibacillus sphaericus (Bacillales: Planococcaceae) is a spore-forming bacillus used for the biological control of mosquitoes (Diptera: Culicidae) due to its larvicidal activity determined by various toxins and S-layer protein produced either during sporulation or by the vegetative cell. Aedes aegypti and Culex quinquefasciatus are the vectors of arboviruses that cause tropical diseases representing a current public health problem. Both species may coexist in the same larval development sites and are susceptible to the larvicidal activity of L. sphaericus. In this study, we compared the larvicidal effects of L. sphaericus 2362 (WHO Reference strain) and native strains III(3)7 and OT4b.25 against Cx. quinquefasciatus and Ae. aegypti in single-species and mixed-culture bioassays. Findings showed that L. sphaericus spores, vegetative cells and a combination thereof possessed high larvicidal activity against Cx. quinquefasciatus larvae, whereas only the formulation of L. sphaericus vegetative cells was effective against Ae. aegypti larvae. Similar results were obtained for field-collected larvae. We propose that a formulation of vegetative cells of L. sphaericus 2362 or III(3)7 could be a good alternative to chemical insecticides for the in situ control of mixed populations of Ae. aegypti and Cx. quinquefasciatus.

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“…pipiens s.l . in coexistence with Aedes aegypti L. under laboratory conditions (Santana‐Martínez et al ., ). Whether Cx.…”

Section: Discussionmentioning

confidence: 97%

A rural–urban latitudinal study of the distributions ofCulex quinquefasciatusandCulex pipiensbioforms in their southernmost sympatric fringe

Cardo

Rubio

Junges

et al. 2019

Medical Vet Entomology

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Mosquitoes grouped in the complex Culex pipiens L. (Diptera: Culicidae) are important vectors of medical and veterinary diseases. In the South American sympatric region, Cx. pipiens and Culex quinquefasciatus Say coexist and potentially hybridize. To identify key drivers of their geographical distribution, mosquito immatures were collected from flower vases of eight urban/rural cemetery pairs within a 5° latitudinal transect along Buenos Aires Province, Argentina. The specimens were identified by molecular methods and their relative proportion modelled as a function of environmental variables. At the beginning of the warm season, northern and southern cemeteries presented exclusively Cx. quinquefasciatus and Cx. pipiens, respectively, with different proportions of both at mid latitudes. By the end of the summer, Cx. quinquefasciatus was present throughout the study area, exclusively in 11 of the 16 cemeteries both rural and urban, whereas Cx. pipiens was predominant only in the southernmost pair. Mean annual temperature, photoperiod variability and time of the season were key drivers of their distributions. All specimens of Cx. pipiens were identified as form molestus and no hybrids were recognized. The reported distribution patterns and the potential absence of Cx. pipiens f. pipiens and hybrids are discussed, along with their implications in disease transmission.

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Asymmetrical Competition between Aedes aegypti and Culex quinquefasciatus (Diptera: Culicidae) Coexisting in Breeding Sites

Cited by 19 publications

References 31 publications

Competition among Aedes aegypti larvae

Competition among Aedes aegypti larvae

Efficacy ofLysinibacillus sphaericusagainst mixed-cultures of field-collected and laboratory larvae ofAedes aegyptiandCulex quinquefasciatus

A rural–urban latitudinal study of the distributions ofCulex quinquefasciatusandCulex pipiensbioforms in their southernmost sympatric fringe

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