Systematics and bionomics of predaceous and phytophagous mites associated with pine foliage in California: II. Population dynamics of mites on three species of pines in the forest falls area of the San Bernardino Mountains
AuthorsLaurence D. Charlet
James A. McMurtry
Authors AffiliationsLaurence D. Charlet was Postgraduate Research Entomologist in the Department of Entomology, Riverside; James A. McMurtry was Professor of Entomology, and Entomologist in the Division of Biological Control, Department of Entomology, Riverside.
Hilgardia 45(7):211-222. DOI:10.3733/hilg.v45n07p211. October 1977.
Seasonal and annual changes were determined in species composition and population densities of phytophagous and predaceous mites on three species of native pines (Pinus coulteri, P. lambertiana, and P. ponderosa) in the San Bernardino Mountains. Population trends were recorded for the Phytoseiidae, Tetranychidae, and Tenuipalpidae. Four species of tetranychids of the genus Oligonychus were present, one species of phytoseiid, Metaseiulus validus, and the tenuipalpid, Brevipalpus sp. Mite numbers were generally lowest from January to March. Predaceous mites gave a positive numerical response to increases in tetranychid population.
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Also in this issue:Systematics and bionomics of predaceous and phytophagous mites associated with pine foliage in California: I. Survey of mites present on native pines, including a description of a new species of Phytoseiidae
Systematics and bionomics of predaceous and phytophagous mites associated with pine foliage in California: III. Laboratory studies on the biology of the Phytoseiids Metaseiulus validus (Chant) and Typmoseiopsis pini (Chant)