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1 February 2012 Population Dynamics of Stable Flies Stomoxys calcitrans (Diptera: Muscidae) at an Organic Dairy Farm in Denmark Based on Mark-Recapture with Destructive Sub-Sampling
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Abstract
A population of stable flies, Stomoxys calcitrans (L.), was studied on a Danish cattle farm in two successive years. Flies were captured monthly by sweep nettings and marked with fluorescent dust. Absolute population size, dilution rate, loss rate, and adult longevity were estimated by means of a modified version of Bailey's triple catch method. In both years, the abundance of flies peaked in July. Using a statistical model, we were able to explain 86.6% of the variation in the per capita growth rate r as a function of current temperature, precipitation, and population size. Omitting precipitation from the model, it still explained 69.3%. The model predicts that stable flies have a temperature optimum at 21.8°C, and that no development will take place when temperatures inside the stable are below 10.2°C or above 33.5°C. At the optimal temperature the intrinsic rate of natural increase is 0.070 d-1. The per capita dilution rate increased with temperature and decreased with population size, whereas no effect of these factors on the per capita loss rate could be shown. Mean adult survival time was estimated to 6.3 d with 95% CL ranging from 4.3 to 11.1 d. The study points at the possibility of developing predictive models as tools for achieving better, and more environmentally sound, control of stable flies.
© 2012 Entomological Society of America
H. Skovgård and G. Nachman "Population Dynamics of Stable Flies Stomoxys calcitrans (Diptera: Muscidae) at an Organic Dairy Farm in Denmark Based on Mark-Recapture with Destructive Sub-Sampling," Environmental Entomology 41(1), (1 February 2012). https://doi.org/10.1603/EN11155
Received: 22 June 2011; Accepted: 1 October 2011; Published: 1 February 2012
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