Comparisons of sampling methods and seasonal abundance of Drosophila repleta in caged-layer poultry houses
| Autor: | Richard C. Axtell, Laura C. Harrington |
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| Rok vydání: | 1994 |
| Předmět: |
Population
Aspirator Biology Insect Control Poultry Animal science Abundance (ecology) Methods North Carolina Animals education Ecology Evolution Behavior and Systematics education.field_of_study General Veterinary Ecology digestive oral and skin physiology fungi Reproducibility of Results Housing Animal Manure Drosophila repleta body regions Insect Science Visual Count Drosophila Parasitology Seasons PEST analysis |
| Zdroj: | Medical and Veterinary Entomology. 8:331-339 |
| ISSN: | 1365-2915 0269-283X |
| DOI: | 10.1111/j.1365-2915.1994.tb00097.x |
| Popis: | Four sampling methods were compared to determine their practicality and suitability for detecting population fluctuations of adult Drosophila repleta, a pest in caged-layer poultry houses. Five caged-layer poultry houses with gutter-flush manure removal systems in Franklin County, North Carolina, U.S.A., were sampled once every 2 weeks over 15 months, from June 1991 to August 1992. The flies were most abundant during the spring and early summer. Visual counts of adult flies resting on the feed troughs in front of cages in the aisles and counts of flies caught on a sticky ribbon lowered into the gutter used for manure removal by flushing were more satisfactory sampling methods than using counts of flies caught on sticky ribbons carried along the aisles or aspirator collections from the gutters. For the visual count method, the effects of location in the house, within each aisle, and feed trough height were determined; two counts on feed troughs in each of two inside rows of cages were sufficient to measure population changes. For routine monitoring of D. repleta populations, visual counts of flies resting on the feed troughs in the front area of two aisles and catching flies on sticky ribbons inserted into the rear gutter area are recommended. |
| Databáze: | OpenAIRE |
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