scholarly journals Aedes albopictus (Diptera: Culicidae) Has Not Become the Dominant Species in Artificial Container Habitats in a Temperate Forest More Than a Decade After Establishment

2020 ◽  
Author(s):  
Katie M Westby ◽  
Steven A Juliano ◽  
Kim A Medley
Keyword(s):  
Aedes Albopictus ◽  
Temperate Forest ◽  
Competitive Ability ◽  
Competitive Displacement ◽  
Field Station ◽  
Saint Louis ◽  
Larval Habitats ◽  
Sample Data ◽  
Do So ◽  
Container Habitats

Abstract Aedes albopictus (Skuse) (Diptera: Culicidae) is one of the most invasive species globally, and has led to rapid declines and local extirpations of resident mosquitoes where it becomes established. A potential mechanism behind these displacements is the superior competitive ability of Ae. albopictus in larval habitats. Research on the context-dependent nature of competitive displacement predicts that Ae. albopictus will not replace native Aedes triseriatus (Say) (Diptera: Culicidae) in treeholes but could do so in artificial container habitats. Aedes albopictus remains rare in temperate treeholes but less is known about how Ae. albopictus fares in artificial containers in forests. Tyson Research Center (TRC) is a field station composed of mostly oak-hickory forest located outside Saint Louis, MO. The container community has been studied regularly at TRC since 2007 with permanently established artificial containers on the property since 2013. Aedes albopictus was detected each year when these communities were sampled; however, its abundance remains low and it fails to numerically dominate other species in these communities. We present data that show Ae. albopictus numbers have not increased in the last decade. We compare egg counts from 2007 to 2016 and combine larval sample data from 2012 to 2017.We present average larval densities and prevalence of Ae. albopictus and two competitors, Ae. triseriatus and Aedes japonicus (Theobald) (Diptera: Culicidae), as well as monthly averages by year. These data highlight a circumstance in which Ae. albopictus fails to dominate the Aedes community despite it doing so in more human-impacted habitats. We present hypotheses for these patterns based upon abiotic and biotic environmental conditions.

scholarly journals Interspecific Competition between Aedes albopictus and A. sierrensis: Potential for Competitive Displacement in the Western United States

PLoS ONE ◽  
2014 ◽  
Vol 9 (2) ◽  
pp. e89698 ◽  
Author(s):  
Banugopan Kesavaraju ◽  
Paul T. Leisnham ◽  
Samantha Keane ◽  
Nicholas Delisi ◽  
Rachel Pozatti
Keyword(s):  
United States ◽  
Interspecific Competition ◽  
Aedes Albopictus ◽  
Western United States ◽  
Competitive Displacement

scholarly journals A comparative study of dengue virus vectors in major parks and adjacent residential areas in Ho Chi Minh City, Vietnam

2022 ◽  
Vol 16 (1) ◽  
pp. e0010119
Author(s):  
Trang Thi Thuy Huynh ◽  
Noboru Minakawa
Keyword(s):  
Dengue Virus ◽  
Vector Control ◽  
Aedes Albopictus ◽  
Urban Parks ◽  
Prevalence Ratio ◽  
Ho Chi Minh City ◽  
Adult Density ◽  
Residential Areas ◽  
Larval Habitats ◽  
Virus Vectors

The primary dengue virus vectors, Aedes aegypti and Aedes albopictus, are primarily daytime biting mosquitoes. The risk of infection is suspected to be considerable in urban parks due to visitor traffic. Despite the importance of vector control for reducing dengue transmission, little information is available on vector populations in urban parks. The present study characterized mosquito habitats and estimated vector densities in the major urban parks in Ho Chi Minh City, Vietnam and compared them with those in adjacent residential areas. The prevalences of habitats where Aedes larvae were found were 43% and 9% for the parks and residential areas, respectively. The difference was statistically significant (prevalence ratio [PR]: 5.00, 95% CI: 3.85–6.49). The prevalences of positive larval habitats were significantly greater in the parks for both species than the residential areas (PR: 1.52, 95% CI: 1.04–2.22 for A. aegypti, PR: 10.10, 95% CI: 7.23–14.12 for A. albopictus). Larvae of both species were positively associated with discarded containers and planters. Aedes albopictus larvae were negatively associated with indoor habitats, but positively associated with vegetation shade. The adult density of A. aegypti was significantly less in the parks compared with the residential areas (rate ratio [RR]; 0.09, 95% CI: 0.05–0.16), while the density of A. albopictus was significantly higher in the parks (RR: 9.99, 95% CI: 6.85–14.59). When the species were combined, the density was significantly higher in the parks (RR: 2.50, 95% CI: 1.92–3.25). The urban parks provide suitable environment for Aedes mosquitoes, and A. albopictus in particular. Virus vectors are abundant in the urban parks, and the current vector control programs need to have greater consideration of urban parks.

scholarly journals Condition-Specific Competitive Effects of the Invasive Mosquito Aedes albopictus on the Resident Culex pipiens among Different Urban Container Habitats May Explain Their Coexistence in the Field

Insects ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 993
Author(s):  
Paul T. Leisnham ◽  
Shannon L. LaDeau ◽  
Megan E. M. Saunders ◽  
Oswaldo C. Villena
Keyword(s):  
West Nile Virus ◽  
Aedes Albopictus ◽  
Culex Pipiens ◽  
West Nile ◽  
Field Surveys ◽  
Competitive Effects ◽  
Vector Mosquito ◽  
Survival And Development ◽  
Invasive Mosquito ◽  
Container Habitats

Condition-specific competition, when environmental conditions alter the outcome of competition, can foster the persistence of resident species after the invasion of a competitively superior invader. We test whether condition-specific competition can facilitate the areawide persistence of the resident and principal West Nile virus vector mosquito Culex pipiens with the competitively superior invasive Aedes albopictus in water from different urban container habitats. (2) Methods: We tested the effects of manipulated numbers of A. albopictus on C. pipiens’ survival and development in water collected from common functional and discarded containers in Baltimore, MD, USA. The experiment was conducted with typical numbers of larvae found in field surveys of C. pipiens and A. albopictus and container water quality. (3) Results: We found increased densities of A. albopictus negatively affected the survivorship and development of C. pipiens in water from discarded containers but had little effect in water from functional containers. This finding was driven by water from trash cans, which allowed consistently higher C. pipiens’ survival and development and had greater mean ammonia and nitrate concentrations that can promote microbial food than other container types. (4) Conclusions: These results suggest that the contents of different urban containers alter the effects of invasive A. albopictus competition on resident C. pipiens, that trash cans, in particular, facilitate the persistence of C. pipiens, and that there could be implications for West Nile virus risk as a result.

scholarly journals Diversities of mosquito species of different locations in Dhaka city

2018 ◽  
Vol 28 (4) ◽  
pp. 295-301
Author(s):  
MG Sharower ◽  
MA Latif
Keyword(s):  
Aedes Albopictus ◽  
Mosquito Species ◽  
Botanical Garden ◽  
High Density ◽  
Dhaka City ◽  
Dengue Vector ◽  
Larval Habitats ◽  
Dengue Viruses ◽  
Breeding Habitats ◽  
Vector Mosquito

A yearlong (Jul-15 to June-16) intensive survey was conducted to document the diversity and density of different mosquito species, breeding habitats and their status at different park in Dhaka city. A total of 11 species of mosquito were identified from the six study areas. The recorded species were An. annularis, An. culicifacies, Ae. albopictus, Ae. aegypti, Ar. subalbatus, Cx. fuscocephala, Cx. quinquefasciatus, Cx. tritaeniorhynchus, Mn. annulifera, Mn. uniformis, Tx. splendidus. Aedes albopictus (38.18%) and Ar. subalbatus (37.47%) were the predominant mosquito species followed by Cx. quinquefasciatus. Others species were found in moderate percentage. Lowest density of Cx. fuscocephala (0.6%) was recorded among the collected mosquito species from the different study area. The highest percentages of mosquito were found in Botanical garden (28.68%) followed by Ramna park, Zia uddyan, Baldha garden, Suhrawardy uddyan, and Osmani uddyan (6.67%). Fifteen different larval habitats were found in the study areas. Majority of the mosquito species was found to breed in pond. High density of Ae. albopictus mosquito were found in all study areas, which is the secondary vector of dengue viruses. Principal dengue vector mosquito, Ae. aegypti were found only in Baldha garden. Ar. subalbatus was also a dominant mosquito species in the entire site.Progressive Agriculture 28 (4): 295-301, 2017

A Field Trial of Competitive Displacement of Aedes Polynesiensis by Aedes Albopictus on a Pacific Atoll

1976 ◽  
Vol 25 (6) ◽  
pp. 906-913 ◽  
Author(s):  
Leon Rosen ◽  
Jacques Saugrain ◽  
Lloyd E. Rozeboom ◽  
Duane J. Gubler ◽  
William C. Reeves
Keyword(s):  
Aedes Albopictus ◽  
Field Trial ◽  
Competitive Displacement ◽  
Aedes Polynesiensis

scholarly journals Wolbachia in Native Populations of Aedes albopictus (Diptera: Culicidae) From Yucatan Peninsula, Mexico

2020 ◽  
Vol 20 (5) ◽  
Author(s):  
Henry Puerta-Guardo ◽  
Yamili Contreras-Perera ◽  
Silvia Perez-Carrillo ◽  
Azael Che-Mendoza ◽  
Guadalupe Ayora-Talavera ◽  
...  
Keyword(s):  
Aedes Albopictus ◽  
Yucatan Peninsula ◽  
Strain Typing ◽  
Local Populations ◽  
Aedes Mosquitoes ◽  
Yucatán Peninsula ◽  
Native Populations ◽  
Baseline Information ◽  
The City ◽  
Do So

Abstract This study reports the results of a molecular screening for Wolbachia (Wb) infection in Aedes albopictus (Skuse) populations recently established in the Yucatan Peninsula, Mexico. To do so, collections of free-flying adults with BG traps and emerged adults from eggs after ovitrap field collections were performed in three suburban localities of the city of Merida, Yucatan. Overall, local populations of Ae. albopictus present a natural Wb infection rate of ~40% (18 of 45). Wb infection was detected in both field-collected adults (76.5%, 13 of 17) and eggs reared (17.8%, 5 of 28) and in 37.9% (11/29) of females and 43.7% (7/16) of male Ae. albopictus mosquitoes. An initial screening for Wolbachia strain typing showed that native Ae. albopictus were naturally coinfected with both wAlbA and wAlbB strains. The knowledge of the prevalence and diversity of Wolbachia strains in local populations of Aedes mosquitoes is part of the baseline information required for current and future Wolbachia-based vector control approaches to be conducted in Mexico.

scholarly journals Habitat Characteristics For Immature Stages of Aedes aegypti In Zanzibar City, Tanzania

2018 ◽  
Vol 34 (3) ◽  
pp. 190-200 ◽  
Author(s):  
Fatma Saleh ◽  
Jovin Kitau ◽  
Flemming Konradsen ◽  
Michael Alifrangis ◽  
Chia-Hsien Lin ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Habitat Characteristics ◽  
Effective Control ◽  
Immature Stages ◽  
Domestic Water ◽  
Public Health Importance ◽  
Cross Sectional ◽  
Larval Habitats ◽  
Inorganic Matter ◽  
Container Habitats

ABSTRACT Aedes aegypti is the main vector for dengue, chikungunya, yellow fever, Zika, and other arboviruses of public health importance. The presence of Ae. aegypti has never been systematically assessed in Zanzibar, including its preferred larval habitats. In 2016 we conducted a cross-sectional entomological survey to describe the preferred larval habitats of Ae. aegypti in Zanzibar City, the main urban area of the Zanzibar archipelago. The surveys for container habitats were conducted for a 17-wk period beginning in January 2016. Immature stages (larvae and pupae) were collected, reared to adulthood, and identified to species. The positive and potential habitats were categorized on the basis of physical, biological, and chemical parameters. A total of 200 samples were collected, of which 124 (62.0%) were positive for immature stages of mosquitoes and 114 (92%) for Ae. aegypti larvae and pupae. Presence of vegetation (odds ratio [OR] = 2.11, 95% confidence interval [CI] = 1.19–3.74), organic matter (OR = 2.37, 95% CI = 1.21–4.60), inorganic matter (OR = 1.78, 95% CI = 1.01–3.13), and sun exposure (OR = 2.34, 95% CI = 1.24–4.36) were all significantly associated with the presence of immature stages of Ae. aegypti, suggesting that these conditions promote colonization of containers. Plastic containers supported 64% of the immature stages and produced approximately 50% of the pupae. Although immature counts were the highest in discarded artifacts, higher pupal counts were found in domestic water storage containers. Our observations suggest that effective control of Ae. aegypti in Zanzibar City must include improved solid waste management (collection and proper disposal of potential container habitats) and reliable supply of domestic water to minimize water-storing practices that provide larval habitats for Ae. aegypti.

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