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Published on: July 4, 2007
A Mathematic Model That Describes Modes of MdSGHV Transmission within House Fly Populations
Celeste R Vallejo1, Jo Ann Lee2, James E Keesling3
1Department of Mathematics, University of Florida, 358 Little Hall, Gainesville, FL 32611, USA. cvallejo@ufl.edu.
Abstract:
In this paper it is proposed that one potential component by which the Musca domestica salivary gland hypertrophy virus (MdSGHV) infects individual flies is through cuticular damage. Breaks in the cuticle allow entry of the virus into the hemocoel causing the infection. Male flies typically have a higher rate of infection and a higher rate of cuticular damage than females. A model for the transmission of MdSGHV was formulated assuming several potential and recognized means of transmission. The model yields results that are in agreement with field data that measured the infection rate in house flies on dairy farms in Florida. The results from this model indicate that MdSGHV will be maintained at a stable rate within house fly populations and support the future use of MdSGHV as a birth control agent in house fly management.
Insights
Musca domestica salivary gland hypertrophy virus (MdSGHV) infection in house flies may occur via cuticular damage, particularly in males. A transmission model confirms MdSGHV stability in fly populations, supporting its use for pest control.
Area of Science:
- Veterinary Entomology
- Insect Pathology
- Molecular Virology
Background:
- The Musca domestica salivary gland hypertrophy virus (MdSGHV) is a significant pathogen affecting house flies.
- Understanding MdSGHV transmission dynamics is crucial for effective pest management strategies.
- Previous research suggests various transmission routes, but cuticular damage as an entry point requires further investigation.
Purpose of the Study:
- To investigate cuticular damage as a potential route for MdSGHV infection in Musca domestica.
- To develop and validate a mathematical model for MdSGHV transmission.
- To assess the potential of MdSGHV as a biocontrol agent for house fly populations.
Main Methods:
- Formulation of a mathematical model incorporating multiple transmission pathways for MdSGHV.
- Analysis of existing field data on MdSGHV infection rates in house flies from Florida dairy farms.
- Comparison of model predictions with empirical data to assess transmission hypotheses.
Main Results:
- Cuticular damage is proposed as a key factor enabling MdSGHV entry into the hemocoel.
- Male house flies exhibit higher susceptibility to infection and cuticle damage compared to females.
- The developed transmission model accurately reflects observed field infection rates, indicating stable MdSGHV maintenance.
Conclusions:
- Cuticular breaches serve as a significant portal for MdSGHV infection in Musca domestica.
- MdSGHV is likely to persist within house fly populations due to its transmission dynamics.
- The findings support the strategic application of MdSGHV for integrated pest management and house fly population control.
