caa a22 4500 386375879 CHVBK 20180307112018.0 cr unu---uuuuu 161130e198904 xx s 000 0 eng 10.1017/S174275840001033X doi S174275840001033X pii (NATIONALLICENCE)cambridge-10.1017/S174275840001033X Mustafa Tawfiq M. Department of Plant Protection, Faculty of Agriculture, University of Jordan, Amman, Jordan Seasonal changes in fat and water content in field populations of olive psylla Euphyllura olivina Costa (Homoptera Psyllidae) [Elektronische Daten] [Tawfiq M. Mustafa] The seasonal changes in water content and fat content of olive psylla, Euphyllura olivina in the field were investigated in two successive years. The overwintering adults of olive psylla had more fat than spring and summer generation adults. There was a steady increase in % fat contents of females from mid-October to early January. The % fat of both sexes decreased sharply in May, June and July. There was a gradual reduction in % water content from mid-June to early October and then decreased steadily until early November. The % water in the overwintering adults ranged from 57.5 to 45% and became constant around 52.5% of live body weight in February and March. Seasonal changes in % water was positively related to population changes of olive psylla. The % water in olive psylla was negatively related to the fat content. Copyright © ICIPE 1989 Euphyllura olivina nationallicence olive psylla nationallicence olive grove nationallicence seasonal changes nationallicence fat content nationallicence water content nationallicence Euphyllura olivina nationallicence olive psylla nationallicence arbust d'olive nationallicence changements saisonniers nationallicence contenu en lipides nationallicence contenu en eau nationallicence International Journal of Tropical Insect Science Cambridge University Press 10/2(1989-04), 181-185 1742-7584 10:2<181 1989 10 JTI https://doi.org/10.1017/S174275840001033X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S174275840001033X text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Mustafa Tawfiq M. Department of Plant Protection, Faculty of Agriculture, University of Jordan, Amman, Jordan NATIONALLICENCE 773 0- International Journal of Tropical Insect Science Cambridge University Press 10/2(1989-04), 181-185 1742-7584 10:2<181 1989 10 JTI CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge