Comparative life-history studies on the predaceous mitesTyphlodromus annectens andT. porresi (Acari: Mesostigmata: Phytoseiidae) |
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| Authors: | Badii M H McMurtry J A Johnson H G |
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| Institution: | (1) Department of Entomology, University of California, 92521 Riverside, CA, USA;(2) Present address: Faculdad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Apdo. 7, F. 66450 San Nicolás de los Garza, N. L., Mexico |
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| Abstract: | Some aspects of the biologies ofTyphlodromus annectens De Leon andT. porresi McMurtry were studied at 25°C. The tetranychid mitesOligonychus punicae (Hirst),Panonychus citri (McGregor) andTetranychus pacificus McGregor were all favorable foods for development ofTy. annectens, whereas a low survival rate of immatures and no oviposition occurred on pollen.Tetranychus pacificus appeared to be a less favorable prey than the other two tetranychids forTy. porresi. Typhlodromus annectens, a very small species, andTy. occidentalis, a medium-sized species used for comparison, consumed significantly moreTe. pacificus larvae than did the medium-sizedTy. porreso. Comparing weights of fed and starved individuals suggested thatTy. occidentalis consumed the greatest volume of food material per time unit. The results are compared with those of previous studies of species in theoccidentalis species group ofTyphlodromus. |
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