Studies on the dispersion and survival of <i>Anopheles gambiae</i> Giles in East Africa, by means of marking and release experiments

Gillies, M. T.

doi:10.1017/s0007485300055309

Cited by 172 publications

(142 citation statements)

References 9 publications

(9 reference statements)

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“…Further avenues for the extension of host availability models are also suggested by equation [4], which outlines a simple model describing the known restriction of host dispersal (Gillies, 1961;Trape et al, 1992;Manga et al, 1993;Thompson et al, 1997), feeding cycle length Charlwood & Graves, 1987) and mortality rate (Charlwood, 1986) by host availability. This relationship is consistent with the observed dependence of adult dispersal upon the relative proximity of hosts and larval habitats (Edman et al, 1998) and the choice of oviposition sites in proximity to preferred hosts (Charlwood & Edoh, 1996;Minakawa et al, 1999).…”

Section: Discussionmentioning

confidence: 99%

The availability of potential hosts as a determinant of feeding behaviours and malaria transmission by African mosquito populations

Killeen

McKenzie

Foy

et al. 2001

Transactions of the Royal Society of Tropical Medicine and Hygi

106

148

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A simple model for the influence of host availability on vector bloodmeal choice is applied to estimate the relative availabilities of humans, cattle and other host populations to malaria vectors in African communities, using published human blood indices and ratios of cattle to humans. Cattle were bitten <0.01, 0.021 ± 0.11, 1.61 ± 0.16 and 1.61 ± 0.46 times as often as humans by Anopheles funestus, An. gambiae sensu stricto and An. arabiensis in Segera, Tanzania, and An. gambiae sensu lato in The Gambia, respectively. No significant feeding upon host species other than cattle or humans was detected. Even though An. gambiae s.l. in The Gambia were mostly An. gambiae s.s., they were 77 times more likely to choose cattle over humans than An. gambiae s.s. in Tanzania. The model accurately predicted cattle blood indices for the An. arabiensis population in Tanzania (predicted = 0.99 ± 0.21 × observed + 0.00 ± 0.10; r 2 = 0.66). The potential effect of increased cattle abundance upon malaria transmission intensity was simulated using fitted relative availability parameters and assuming vector emergence rate, feeding cycle length and survivorship were unaffected. The model predicted that increased cattle populations would not affect malaria transmission in Tanzania but could drastically reduce transmission in The Gambia or where An. arabiensis is the dominant vector. We define the availability of a host as the rate at which a typical individual host-seeking vector encounters and feeds upon that host in a single feeding cycle. Mathematical models based on this definition also represent promising tools for quantifying the dependence of vector longevity, feeding cycle length and dispersal upon host availability.

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Section: Discussionmentioning

confidence: 99%

The availability of potential hosts as a determinant of feeding behaviours and malaria transmission by African mosquito populations

Killeen

McKenzie

Foy

et al. 2001

Transactions of the Royal Society of Tropical Medicine and Hygi

106

148

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“…To analyze differences in survival between small and large males during each MRR study, the slopes of regression lines were compared. 27 The probability of daily survival (PDS) for marked male cohorts in each MRR experiment was estimated by fitting the exponential model 28 to log-transformed data for recaptured males against the day of collection. The antilogarithm of the slope of the regression line gives an estimate of PDS.…”

Section: Methodsmentioning

confidence: 99%

Dispersal of Male Aedes aegypti in a Coastal Village in Southern Mexico

Valerio

Facchinelli²,

Ramsey³

et al. 2012

The American Society of Tropical Medicine and Hygiene

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Abstract. Most Aedes aegypti dispersal studies have focused on females because of their central role in dengue virus transmission. Only a few mark-release-recapture (MRR) studies provided insights into male Ae. aegypti dispersal. To fill this knowledge gap, we conducted five male Ae. aegypti MRR experiments in a coastal village in southern Mexico. Small and large male cohorts were marked with fluorescent dusts, released outside buildings, and recaptures were carried out by using backpack aspirators. Recapture rates ranged between 0.35% and 6.55% and median distance traveled was 12-166 meters. A statistically significant difference in median distance traveled with large males dispersing farther than small ones was detected only in one experiment (MRR5: U = 3.5, P 0.01). Male dispersal data will be useful for constructing and estimating parameter values and validating models that will be used to plan the most effective release strategies for genetically modified male Ae. aegypti.

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“…The probability of daily survival was estimated by using two models: the exponential 20 and nonlinear 21 . Only field data were adjusted to models, in relation to the 7-8 days before mosquito release.…”

Section: Estimation Of Daily Survival Ratesmentioning

confidence: 99%

Calculating the survival rate and estimated population density of gravid Aedes aegypti (Diptera, Culicidae) in Rio de Janeiro, Brazil

2008

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Population size and daily survival rates of disease vectors are important determinants of vectorial capacity. A mark-release-recapture experiment was conducted in a dengue endemic urban neighborhood of Rio de Janeiro, Brazil, to estimate population size, survival rate and vectorial capacity of Aedes aegypti females using back-pack aspirators and gravid sticky traps (MosquiTRAP). Estimations of the gravid female population size were different when using data gathered from just the MosquiTRAP (3,505 individuals) or aspirator (1,470). However Ae. aegypti survival rates and longevity were similar irrespective of the method of capture. Up to 26.3% of released females would be able to survive for more than 10 days, the length of time of the extrinsic incubation period. Vectorial capacity value ranged between 0.01567 and 0.4215 and the basic reproductive number (R0) was estimated to be between 0.0695 and 1.88.

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Studies on the dispersion and survival of Anopheles gambiae Giles in East Africa, by means of marking and release experiments

Cited by 172 publications

References 9 publications

The availability of potential hosts as a determinant of feeding behaviours and malaria transmission by African mosquito populations

The availability of potential hosts as a determinant of feeding behaviours and malaria transmission by African mosquito populations

Dispersal of Male Aedes aegypti in a Coastal Village in Southern Mexico

Calculating the survival rate and estimated population density of gravid Aedes aegypti (Diptera, Culicidae) in Rio de Janeiro, Brazil

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