caa a22 4500 475834429 CHVBK 20180406123849.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1023/A:1009924218437 doi (NATIONALLICENCE)springer-10.1023/A:1009924218437 Introducing Encarsia lahorensisagainst Dialeurodes citriin Israel: a case of successful biological control [Elektronische Daten] [Yael Argov, Yoram Rössler, Hillary Voet, David Rosen] The parasitoid Encarsialahorensis has been present in Israel since its import in 1980 for biological control of Dialeurodes citri, a serious pest of citrus. The larvae of D. citri secrete honey dew, which is colonized by sooty mould fungi, leading to aesthetic impairment of the fruit as well as leaf drop and yield loss. In a process which took about 3years, the parasitoid reduced the pest to low levels and maintained the population beneath the economic damage threshold for several years. This study, carried out in a citrus orchard during the years1987-1991, was intended to demonstrate the existence of efficient biological control by comparing the pest populations before and after the unhindered introduction of the natural enemy to a new region. In the course of two years, the pest population decreased from a peak level of 122 eggs to 2-7 per half-leaf. Concurrently, the population of the vulnerable fourth nymphal in star decreased from a maximum of 12 to 3 perhalf-leaf. Thereafter, D. citri was maintained at this low level, with peaks of parasitism ranging from20 to 50%. It was concluded that D. citri is under successful biological control in Israel by the specific parasitoid E. lahorensis. Kluwer Academic Publishers, 2000 citrus nationallicence natural enemy nationallicence parasitism nationallicence parasitoid nationallicence pest population nationallicence whitefly nationallicence Argov Yael Citrus Marketing Board of Israel, The 's'sIsrael Cohen'' Institute for Biological Control, P.O. Box 80, 50250, Bet Dagan, Israel aut Rössler Yoram Citrus Marketing Board of Israel, The 's'sIsrael Cohen'' Institute for Biological Control, P.O. Box 80, 50250, Bet Dagan, Israel aut Voet Hillary Faculty of Agriculture, The Hebrew University, P.O. Box 12, 76100, Rehovot, Israel aut Rosen David Faculty of Agriculture, The Hebrew University, P.O. Box 12, 76100, Rehovot, Israel aut BioControl Kluwer Academic Publishers 45/1(2000-03-01), 1-10 1386-6141 45:1<1 2000 45 10526 https://doi.org/10.1023/A:1009924218437 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1009924218437 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Argov Yael Citrus Marketing Board of Israel, The 's'sIsrael Cohen'' Institute for Biological Control, P.O. Box 80, 50250, Bet Dagan, Israel aut NATIONALLICENCE 700 1- Rössler Yoram Citrus Marketing Board of Israel, The 's'sIsrael Cohen'' Institute for Biological Control, P.O. Box 80, 50250, Bet Dagan, Israel aut NATIONALLICENCE 700 1- Voet Hillary Faculty of Agriculture, The Hebrew University, P.O. Box 12, 76100, Rehovot, Israel aut NATIONALLICENCE 700 1- Rosen David Faculty of Agriculture, The Hebrew University, P.O. Box 12, 76100, Rehovot, Israel aut NATIONALLICENCE 773 0- BioControl Kluwer Academic Publishers 45/1(2000-03-01), 1-10 1386-6141 45:1<1 2000 45 10526 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer