Infestations of Wild Peromyscus leucopus by Bot Fly Larvae

1990 ◽  
Vol 71 (2) ◽  
pp. 255-258 ◽  
Author(s):  
X. Xia ◽  
J. S. Millar
Keyword(s):  
Peromyscus Leucopus ◽  
Bot Fly ◽  
Fly Larvae

Stress and parasitism of white-footed mice (Peromyscus leucopus) in dry and floodplain environments

2006 ◽  
Vol 84 (12) ◽  
pp. 1833-1839 ◽  
Author(s):  
T.T. Brown ◽  
C.A. Fuller
Keyword(s):  
Intestinal Parasites ◽  
Peromyscus Leucopus ◽  
Parasite Prevalence ◽  
Direct Result ◽  
Environmental Stressor ◽  
Dry Areas ◽  
Bot Fly ◽  
History Of ◽  
Fly Larvae ◽  
Floodplain Habitats

We hypothesized that flooding represents an environmental stressor that might affect the corticosterone levels, parasite prevalence, and life history of small mammals living in floodplain environments. We compared populations of white-footed mice ( Peromyscus leucopus (Rafinesque, 1818)) on floodplains and dry areas. We found more males on floodplains (p = 0.008) and more females on dry areas (p = 0.005). There were no differences in mass (p > 0.05) or intestinal parasite prevalence (p = 0.665) between dry and floodplain habitats, but bot fly larvae were significantly more prevalent in males living on floodplains (p = 0.043). Floodplain animals had significantly higher levels of corticosterone than dry-area animals in fall, and lower levels in summer (F[1,20] = 4.483, p = 0.047). In addition, we found that animals with intestinal parasites had higher levels of corticosterone than those that were without parasites (p = 0.014) or that harbored bot fly larvae (p = 0.001). Floodplains seem to be harsher environments than dry areas, but this may be a result of differences in habitat rather than a direct result of flooding.

Free-ranging eastern chipmunks (Tamias striatus) infected with bot fly (Cuterebra emasculator) larvae have higher resting but lower maximum metabolism

2012 ◽  
Vol 90 (3) ◽  
pp. 413-421 ◽  
Author(s):  
V. Careau ◽  
D. Garant ◽  
M.M. Humphries
Keyword(s):  
Energy Budget ◽  
Host Species ◽  
Resting Metabolic Rate ◽  
Aerobic Scope ◽  
Tamias Striatus ◽  
Metabolic Ecology ◽  
Bot Fly ◽  
Lower Maximum ◽  
Fly Larvae ◽  
Free Ranging

Given the ubiquity and evolutionary importance of parasites, their effect on the energy budget of mammals remains surprisingly unclear. The eastern chipmunk ( Tamias striatus (L., 1758)) is a burrowing rodent that is commonly infected by cuterebrid bot fly ( Cuterebra emasculator Fitch, 1856) larvae. We measured resting metabolic rate (RMR) and cold-induced Vo2-max (under heliox atmosphere) in 20 free-ranging individuals, of which 4 individuals were infected by one or two larva. We found that RMR was significantly higher in chipmunks infected by bot fly larvae (mean ± SE = 0.88 ± 0.05 W) than in uninfected individuals (0.74 ± 0.02 W). In contrast, Vo2-max was significantly lower in chipmunks infected by bot fly larvae (4.96 ± 0.70 W) than in uninfected individuals (6.37 ± 0.16 W). Consequently, the aerobic scope (ratio of Vo2-max to RMR) was negatively correlated with the number of bot fly larvae (infected individuals = 5.74 ± 1.03 W; noninfected individuals = 8.67 ± 0.26 W). Finally, after accounting for the effects of body mass and bot fly parasitism on RMR and Vo2-max, there was no correlation between the two variables among individuals within our population. In addition to providing the first estimate of Vo2-max in T. striatus, these results offer additional evidence that bot fly parasitism has significant impacts on the metabolic ecology of this host species.

The Importance of Sheep Bot Fly Larvae and Their Control with Systemic Insecticides in Arizona1

1969 ◽  
Vol 62 (3) ◽  
pp. 675-677 ◽  
Author(s):  
Roger S. Buchanan ◽  
Leonard W. Dewhirst ◽  
George W. Ware
Keyword(s):  
Systemic Insecticides ◽  
Bot Fly ◽  
Fly Larvae

Cutaneous Myiasis with Dermatobia Hominis (Human Bot Fly*) Larvæ Treated both Conservatively and Surgically

2006 ◽  
Vol 92 (2) ◽  
pp. 78-81
Author(s):  
G. Wild
Keyword(s):  
Differential Diagnosis ◽  
Skin Lesion ◽  
Conservative Treatment ◽  
Surgical Intervention ◽  
Spontaneous Resolution ◽  
Dermatobia Hominis ◽  
Bot Fly ◽  
Cutaneous Myiasis ◽  
Fly Larvae ◽  
The Tropics

AbstractA case is presented of infestation with the larvae of Dermatobia hominis (human bot fly). This case is unusual in that it provides an example of three different outcomes for separate lesions in the same patient; spontaneous resolution, conservative treatment and surgical intervention. It also illustrates that myiasis should be included in the differential diagnosis of any skin lesion of a patient returning from the tropics.

Sublethal parasites in white-footed mice: impact on survival and reproduction

1991 ◽  
Vol 69 (2) ◽  
pp. 398-404 ◽  
Author(s):  
James C. Munger ◽  
William H. Karasov
Keyword(s):  
Population Density ◽  
Peromyscus Leucopus ◽  
Parasitic Infection ◽  
Reproductive Season ◽  
Natural Experiments ◽  
Bot Fly ◽  
Impact On Survival ◽  
Survival And Reproduction ◽  
Potential Impact ◽  
The Impact

The potential impact of two parasites on the population density of host white-footed mice (Peromyscus leucopus) was assessed by measuring effects on survival and reproduction in field populations. Thirty-eight mice infected with larvae of the bot fly Cuterebra angustifrons had their larvae removed, another 41 mice remained infected, and 46 other mice were naturally uninfected during the experiment. No effect of bot larvae removal was detected on either survival (measured as attrition) or reproduction (measured as end of reproductive season). However, contrary to expectation, naturally infected mice had lower attrition and a marginally longer reproductive season than naturally uninfected mice. This latter result is probably an artifact, due to underlying differences between naturally infected and uninfected mice. Sixty-seven mice were experimentally infected with the tapeworm Hymenolepis citelli (64 mice were controls), but no effect was detected on attrition from the trappable population nor on the cessation of the reproductive season. Our results indicate that (i) these parasites are unlikely to have any effect on population density of white-footed mice, and (ii) it is potentially misleading to use "natural experiments" (comparison of naturally infected hosts with uninfected hosts) to study the impact of parasitic infection.

Implantation of Human Bot Fly Larvae in Host Skin

2010 ◽  
Vol 47 (1) ◽  
pp. 95-98
Author(s):  
A.C.R. Leite ◽  
M.F.A. Nascimento ◽  
L. R. Serafim
Keyword(s):  
Bot Fly ◽  
Fly Larvae

Costs of bot fly infection in white-footed mice: energy and mass flow

1994 ◽  
Vol 72 (1) ◽  
pp. 166-173 ◽  
Author(s):  
James C. Munger ◽  
William H. Karasov
Keyword(s):  
Tritiated Water ◽  
Nutrient Budget ◽  
Digestive Efficiency ◽  
Fluid Flux ◽  
Bot Fly ◽  
Lactating Females ◽  
Fly Larvae ◽  
Host Parasite ◽  
The Impact ◽  
Modest Effect

We quantified the impact of bot fly larvae (Cuterebra fontinella) on the energy budget of their small-mammal hosts (white-footed mice, Peromyscus leucopus). We estimated the fluxes of water from the host to the parasite and from the parasite to the host by injecting infected hosts (or bot fly larvae) with tritiated water and measuring the uptake by the parasite (or the host). Using these fluxes, we then constructed a fluid flux budget for the host–parasite system, and estimated that a bot fly larva receives ca. 1% of the host's nutrient budget. We also found a 5% increase in the metabolic rate of infected hosts in the laboratory, but no such effect in the field. No effect of bot fly larvae on digestive efficiency or food consumption was detected; however, infected mice lost body mass during a field trial. We conclude that bot fly larvae have a relatively modest effect, although energetically stressed individuals, such as lactating females, could suffer substantially.

Sign in / Sign up

Export Citation Format

Share Document