Age-Stage, Two-Sex Life Table Characteristics of<i>Aedes albopictus</i>and<i>Aedes Aegypti</i>in Penang Island, Malaysia

Maimusa, Hamisu A; Ahmad, Abu Hassan; Kassim, Nur Faeza Abu; Rahim, Junaid

doi:10.2987/moco-32-01-1-11.1

Cited by 22 publications

(22 citation statements)

References 32 publications

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“…Furthermore, a lower mean natural diurnal temperature may significantly reduce reproduction in adult females. To the best of our knowledge, this is the first study to assess such an effect under semi-natural conditions [38][39]. Previous studies on Ae.…”

Section: Discussionmentioning

confidence: 89%

Semi-field life-table studies of Aedes albopictus (Diptera: Culicidae) in Guangzhou, China

Yang

et al. 2020

PLoS ONE

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Background Aedes albopictus is a major vector for several tropical infectious diseases. Characterization of Ae. albopictus development under natural conditions is crucial for monitoring vector population expansion, dengue virus transmission, and disease outbreak preparedness. Methods This study employed mosquito traits as a proxy to understanding life-table traits in mosquitoes using a semi-field study. Ae. albopictus larval and adult life-table experiments were conducted using microcosms under semi-field conditions in Guangzhou. Stage-specific development times and survivorship rates were determined and compared under semi-field conditions in different seasons from early summer (June) to winter (January), to determine the lower temperature limit for larval development and adult survivorship and reproductivity. Results The average egg-hatching rate was 60.1%, with the highest recorded in October (77.1%; mid-autumn). The larval development time was on average 13.2 days (range, 8.5-24.1 days), with the shortest time observed in September(8.7 days; early autumn) and longest in November (22.8 days). The pupation rates of Ae. albopictus larvae were on average 88.9% (range, 81.6-93.4%); they were stable from June to September but decreased from October to November. The adult emergence rates were on average 82.5% (range, 76.8-87.9%) and decreased from July to November. The median survival time of Ae. albopictus adults was on average 7.4 (range, 4.5-9.8), with the shortest time recorded in September. The average lifetime egg mass under semi-field conditions was 37.84 eggs/female. The larvae could develop into adults at temperatures as low as 12.3˚C, and the adults could survive for 30.0 days at 16.3˚C and still produce eggs. Overall, correlation analysis found that mean temperature and relative humidity were variables significantly affecting larval development and adult survivorship.

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Section: Discussionmentioning

confidence: 89%

Semi-field life-table studies of Aedes albopictus (Diptera: Culicidae) in Guangzhou, China

Yang

et al. 2020

PLoS ONE

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“…They show promising results characterized by only 30% of females collected in the release spots, showing 100% sterility, and 20% showing strongly reduced fertility compared with control sites (21). Regarding to ARwP males longevity, they survived up to 2 weeks after release, which is considered adequate for the preservation of reproductive tness in males, and very similar to wild Asian tiger mosquito males longevity in normal situations in the eld (47). These results are in the same line that those from Calvitti et al (2009) (48), since they found no differences between uninfected and infected males (ARwP) of Ae.…”

Section: Discussionmentioning

confidence: 89%

Naturally Occurence Of Wolbachia Spp. Infection In Populations Of Aedes Albopictus In The City of Valencia, Spain

Marcilla¹,

Trelis

Lera

et al. 2020

Preprint

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Background: The presence of Aedes albopictus was first reported in Valencia (Eastern Spain) in 2015, having a high sanitary and social impact. Innovative tools for its control include the use of the endosymbiotic bacterium Wolbachia pipientis, which suppress Ae. albopictus populations. The release of mosquito males infected with the bacteria has proven effective as a control strategy in similar urban areas in Rome, Italy. Before this strategy could be implemented in Valencia, it is crucial to know whether natural local populations of Ae. albopictus are infected with Wolbachia pipientis and if so, identifying the bacteria strains/supergroups. Methods: Eggs were collected from water basins from the 19 districts of the city of Valencia between May and October 2019. A total of 50 Ae. albopictus reared mosquito adults were processed and analyzed for the presence Wolbachia by selected markers for 16S rDNA and surface protein (wsp) genes, under optimized PCR conditions and sequenced.Results: Our study reveal that 94,7% of the samples carried the endosymbiont, with no differences among sexes. In relation to the Wolbachia strains, both wAlbA and wAlbB strains were identified in the mosquitoes analyzed, with some samples carrying mixed infections. Conclusions: These data provide the first characterization of endosymbionts present in natural populations of Ae. albopictus in the Mediterranean area of Spain, and offers relevant information to evaluate the potential use of Wolbachia strains in order to achieve mosquito populations suppression through massive releases of males artificially infected.

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“…Furthermore, we obtained differences in some population parameters as compared with other studied populations of Ae. albopictus from America and Asia 34 – 36 . For instance, although larval and pupal survival was high, we found a low hatch rate of eggs, leading to a negative growth rate.…”

Section: Discussionmentioning

confidence: 99%

Biological characterization of Aedes albopictus (Diptera: Culicidae) in Argentina: implications for arbovirus transmission

Chuchuy

Rodriguero

Ferrari

et al. 2018

Sci Rep

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Aedes albopictus (Diptera: Culicidae) is an invasive mosquito, native to Asia, that has expanded its range worldwide. It is considered to be a public health threat as it is a competent vector of viruses of medical importance, including dengue, chikungunya, and Zika. Despite its medical importance there is almost no information on biologically important traits of Ae. albopictus in Argentina. We studied life cycle traits, demographic parameters and analyzed the competence of this mosquito as a virus vector. In addition, we determined the prevalence of Wolbachia strains in Ae. albopictus as a first approach to investigate the potential role of this bacteria in modulating vector competence for arboviruses. We observed low hatch rates of eggs, which led to a negative growth rate. We found that Ae. albopictus individuals were infected with Wolbachia in the F1 but while standard superinfection with wAlbA and wAlbB types was found in 66.7% of the females, 16.7% of the females and 62.5% of the males were single-infected with the wAlbB strain. Finally, despite high levels of infection and dissemination, particularly for chikungunya virus, Ae. albopictus from subtropical Argentina were found to be relatively inefficient vectors for transmission of both chikungunya and dengue viruses.

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Age-Stage, Two-Sex Life Table Characteristics ofAedes albopictusandAedes Aegyptiin Penang Island, Malaysia

Cited by 22 publications

References 32 publications

Semi-field life-table studies of Aedes albopictus (Diptera: Culicidae) in Guangzhou, China

Semi-field life-table studies of Aedes albopictus (Diptera: Culicidae) in Guangzhou, China

Naturally Occurence Of Wolbachia Spp. Infection In Populations Of Aedes Albopictus In The City of Valencia, Spain

Biological characterization of Aedes albopictus (Diptera: Culicidae) in Argentina: implications for arbovirus transmission

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