The scale insects of some tropical fruit plants in greenhouses of the Botanical Garden in Lublin (Poland)
Golan, K.(Agricultural Univ. of Lublin (Poland). Dept. of Entomology)E-mail:[email protected] | Gorska-Drabik, E.(Agricultural Univ. of Lublin (Poland). Dept. of Entomology)E-mail:[email protected]
The aim of presented investigations was to determine the composition of scale insects species and intensity of their occurrence on some tropical plants of greenhouses. The investigations were carried out in the greenhouses of the Maria Curie Sklodowska Botanical Garden in Lublin during the years 2002-2004. Ten species belonging to seven genera of tropical fruit plants were observed: Ficus, Musa, Eugenia, Ananas, Feijoa, Citrus, and Eriobotrya. The quantitative analysis of the studied material was performed making use of the following ecological indicators: number, frequency, and density. Identification of scale insect species was performed on the basis of microscope sliders. Four species of scale insects belonging to two families were observed on tropical fruit plants: Pseudococcidae (Pseudococcua maritimus, Planococcus citri) and Coccidae (Coccus hesperidum, Saissetia coffeae). The scale insects were noted on nine species of tropical plants, they were not observed on Ananas comosus. The observed scale insects are typical polyphagous and all of them are considered as harmful pests in greenhouses. However, two species - P. citri and S. coffeae - seem to be of major importance as pests of tropical fruit plants in observed greenhouses.
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