Development of a sampling plan for Myzus persicae (Hemiptera: Aphidoidea) and its predator Macrolophus costalis (Hemiptera: Miridae) on tobacco

European Journal of Entomology

Nickolas G. KAVALLIERATOS¹  Željko TOMANOVIĆ²  Snežana TOMANOVIĆ²  Marija MILUTINOVIĆ³  Christos G. ATHANASSIOU⁴ 

[1] Benaki Phytopathological Institute, Department of Entomology and Agricultural Zoology, Laboratory of Agricultural Entomology, 8 Stefanou Delta str., 14561 Kifissia, Attica, Greece;Institute of Zoology, Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia and Montenegro;Laboratory for Medical Arachnoentomology, Institute for Medical Research, Dr Subotica 4, POB 102, 11129 Belgrade, Serbia and Montenegro;Laboratory of Agricultural Zoology and Entomology, Agricultural University of Athens, 75 Iera Odos str., 11855 Athens, Attica, Greece;

关键词: aphids;    myzus persicae;    miridae;    macrolophus costalis;    tobacco;    sampling;    precision;    sample size;   

DOI  :  10.14411/eje.2005.057

来源: DOAJ

【 摘 要 】

A tobacco field in Greece was sampled during the 2001 and 2002 growing seasons to assess the seasonal trends in densities and spatial distributions of the aphid Myzus persicae (Sulzer) and its predatory mirid Macrolophus costalis (Fieber). On repeated occasions between June (just after the transplantation) and September (just before harvest), 20 tobacco leaves (10 from the upper and 10 from the lower plant part) were taken from randomly chosen plants. These leaves were sampled for aphids and mirids. In both years, the highest aphid densities were recorded during July and August, while aphid numbers were low in September. In contrast, the majority of M. costalis individuals were found during September when aphid numbers were low. Significantly more M. persicae individuals were found in the upper part of the plants, whereas significantly more M. costalis individuals were found in the lower part of the plants. As indicated by Taylor's Power Law estimates, both species were aggregated in their spatial distributions among sampling units (leaves). Wilson and Room's model, based on the Taylor's estimates, was used to calculate the mean number of aphids and mirids, from the proportion of sampling units (leaves) that had > 0 individuals of each species. This model provided a satisfactory fit of the data for both the aphid and the mirid. In addition, Wilson and Room's model was successfully used to predict the mean number of aphids and mirids in a series of samples that were carried out in the same area between June and September 2003 for model validation. Finally, equations are given for the calculation of precision in estimating the mean number of aphids or mirids per sampling unit, and the required sample size for a given level of precision.

【 授权许可】

Unknown