caa a22 4500 46906028X CHVBK 20180323132855.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF01193808 doi (NATIONALLICENCE)springer-10.1007/BF01193808 Comparison of dimethoate and methidathion tolerance in four strains of Phytoseiulus persimilis (Athias-Henriot) (Acarina: Phytoseiidae) in Australia [Elektronische Daten] [S. Goodwin, T. Wellham] The toxicity of dimethoate 30EC and methidathion 40EC was tested against four strains ofPhytoseiulus persimilis obtained from commercial greenhouse rose crops. A single strain ofP. persimilis demonstrated tolerance to the field rate of 1.0 ml/l dimethoate used to controlHeliothrips haemorrhoidalis as indicated by the LC50 of 1.5 ml/l ai and a significantly different response at the LC90 level (P<0.05) to the three other strains tested. None of the strains was different in level of response to methidathion (P>0.05) and were unable to tolerate the recommended field rate of methidathion. Selection to dimethoate by routine field spraying has produced improved tolerance inP. persimilis. The dimethoate-tolerant strain was not different in developmental period and mean number of eggs produced per female when compared with the Sydney strain (P>0.05). Elsevier Science Publishers B. V, 1993 Goodwin S. Horticultural Research and Advisory Station, NSW Agriculture, P.O. Box 581, 2250, Gosford, N.S.W., Australia aut Wellham T. Horticultural Research and Advisory Station, NSW Agriculture, P.O. Box 581, 2250, Gosford, N.S.W., Australia aut Experimental & Applied Acarology Kluwer Academic Publishers 16/3(1992-12-01), 255-261 0168-8162 16:3<255 1992 16 10493 https://doi.org/10.1007/BF01193808 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01193808 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Goodwin S. Horticultural Research and Advisory Station, NSW Agriculture, P.O. Box 581, 2250, Gosford, N.S.W., Australia aut NATIONALLICENCE 700 1- Wellham T. Horticultural Research and Advisory Station, NSW Agriculture, P.O. Box 581, 2250, Gosford, N.S.W., Australia aut NATIONALLICENCE 773 0- Experimental & Applied Acarology Kluwer Academic Publishers 16/3(1992-12-01), 255-261 0168-8162 16:3<255 1992 16 10493 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer