Population dynamics of <i>Armigeres subalbatus</i> (Diptera: Culicidae) across a temperate altitudinal gradient

Chaves, Luis Fernando; Imanishi, Nozomi; Hoshi, Tomonori

doi:10.1017/s0007485315000474

Cited by 33 publications

(43 citation statements)

References 48 publications

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“…gambiae distribution with a decrease of mosquito number as altitude increases. Moreover, and given the importance of the spatio-temporal dynamics of vectors in disease transmission (Chaves et al, 2015), there is a crucial need to understand such vector population dynamics in areas with contrasted patterns of transmission (Kamugisha, 2005), to better design tailor-made solutions to control disease transmission.…”

Section: Resultsmentioning

confidence: 99%

The fine-scale genetic structure of the malaria vectors Anopheles funestus and Anopheles gambiae (Diptera: Culicidae) in the north-eastern part of Tanzania

Gélin

Magalon

Drakeley

et al. 2016

Int. J. Trop. Insect Sci.

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International audienceUnderstanding the impact of altitude and ecological heterogeneity at a fine scale on the populations of malaria vectors is essential to better understand and anticipate eventual epidemiological changes. It could help to evaluate the spread of alleles conferring resistance to insecticides and also determine any increased entomological risk of transmission in highlands due to global warming. We used microsatellite markers to measure the effect of altitude and distance on the population genetic structure of Anopheles funestus and Anopheles gambiae s.s. in the Muheza area in the northeastern part of Tanzania (seven loci for each species). Our analysis reveals strong gene flow between the different populations of An. funestus from lowland and highland areas, as well as between populations of An. gambiae sampled in the lowland area. These results highlight for An. funestus the absence of a significant spatial subpopulation structuring at small-scale, despite a steep ecological and altitudinal cline. Our findings are important in the understanding of the possible spread of alleles conferring insecticide resistance through mosquito populations. Such information is essential for vector control programmes to avoid the rapid spread and fixation of resistance in mosquito populations

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Section: Resultsmentioning

confidence: 99%

The fine-scale genetic structure of the malaria vectors Anopheles funestus and Anopheles gambiae (Diptera: Culicidae) in the north-eastern part of Tanzania

Gélin

Magalon

Drakeley

et al. 2016

Int. J. Trop. Insect Sci.

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“…albopictus and has shown that the organism can also occur in Ar. subalbatus, a species found widely in China, Japan, and Southeast Asia (Chaves et al 2015). The females feed primarily on people and are the natural vectors of filarial worms (Muslim et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Molecular Detection of Rickettsia felis and Rickettsia bellii in Mosquitoes

Zhang

et al. 2019

Vector-Borne and Zoonotic Diseases

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To add to the limited information on Rickettsia in mosquitoes in China, we carried out a PCR survey on convenience samples of 3051 mosquitoes collected with hand nets in and around domestic dwellings in 25 provinces. Five species of mosquitoes were identified: Culex pipiens pallens (n = 1620), Aedes albopictus (806), Armigeres subalbatus (377), Anopheles sinensis (168), and Culex tritaeniorhynchus (80). A Rickettsia nested-PCR targeting the variable domain of gltA showed Rickettsia felis in four mosquito species of 16 provinces Cx. pipiens pallens (1.8%, 29/1620); Ae. albopictus (1.2%, 10/806); An. sinensis (1.2%, 2/168); and Ar. subalbatus (2.1%, 8/377). Rickettsia bellii was also widespread, occurring in 12 provinces and 2 species: Cx. pipiens pallens (4.3%, 69/1620) and An. sinensis (0.6%, 1/168). R. felis and R. bellii were found in almost similar numbers in female [1.5% (27/1809) and 1.2% (21/1809), respectively] as in male mosquitoes [1.8% (22/1242) and 4.0% (49/1242), respectively]. Our results indicated that mosquitoes in China are widely infected with R. felis, the agent of human flea-borne spotted fever, and that R. bellii can also occur outside of the Americas and its usual tick hosts.

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“…All the mosquitoes we collected were female. Environmental conditions can influence insect captures from sweepnetting (Chaves et al 2015), and we guess that the low numbers collected at Pond 4 were partly a result of colder, windier environmental conditions near the Greenland Ice Sheet (Culler et al 2015, Fig. Thus, it is likely that few, if any, males survived long enough to be captured during our sampling.…”

Section: Discussionmentioning

confidence: 99%

Spatial heterogeneity in the abundance and fecundity of Arctic mosquitoes

2018

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Citation: Culler, L. E., M. P. Ayres, and R. A. Virginia. 2018. Spatial heterogeneity in the abundance and fecundity of Arctic mosquitoes. Ecosphere 9(8):Abstract. The abundance of mosquitoes is strongly influenced by biotic and abiotic factors that act on the immature (aquatic) and adult (terrestrial) life stages. Rapid changes in land use and climate, which impact aquatic and terrestrial mosquito habitat, necessitate studying the ecological mechanisms, and their interplay with the changing environment, that affect mosquito abundance. These data are crucial for anticipating how environmental change will impact their roles as pests, disease vectors, and in food webs. We studied a population of Arctic mosquitoes (Aedes nigripes, Diptera: Culicidae) in western Greenland, a region experiencing rapid environmental change, to quantify spatial variation in adult abundance and reproduction. Using sweep nets, we collected about sevenfold more mosquitoes within the town of Kangerlussuaq and within a low-elevation tundra valley compared to three other tundra locations. Dissections of adult female mosquitoes revealed that only 17% were gravid overall, with a range of 7-43% among sites. If gravid, mosquitoes matured an average of 60 eggs per individual-more in larger females. We found no indication of autogenous egg development. Analyses using our field data indicated that spatial variation in adult fecundity and survival of immatures could each account for a 10-fold range in the per capita growth of mosquito populations. The availability of vertebrate hosts and aquatic habitat is changing in many parts of the Arctic and can be expected to influence Arctic mosquito abundance. In the Arctic, and elsewhere, life-history data from natural populations of mosquitoes will significantly aid in understanding controls on the abundance of these globally ubiquitous insects.

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Population dynamics of Armigeres subalbatus (Diptera: Culicidae) across a temperate altitudinal gradient

Abstract: 11Understanding the impacts of weather fluctuations, and environmental gradients, on the

Cited by 33 publications

References 48 publications

The fine-scale genetic structure of the malaria vectors Anopheles funestus and Anopheles gambiae (Diptera: Culicidae) in the north-eastern part of Tanzania

The fine-scale genetic structure of the malaria vectors Anopheles funestus and Anopheles gambiae (Diptera: Culicidae) in the north-eastern part of Tanzania

Molecular Detection of Rickettsia felis and Rickettsia bellii in Mosquitoes

Spatial heterogeneity in the abundance and fecundity of Arctic mosquitoes

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