ABD-RABOU, S., AHMED, N. (2012). WHITEFLIES (HEMIPTERA : ALEYRODIDAE) INFESTED ORCHARDS AND THEIR NATURAL ENEMIES IN EGYPT. Egyptian Journal of Agricultural Research, 90(4), 1469-1496. doi: 10.21608/ejar.2012.163996
SHAABAN ABD-RABOU; NOHA AHMED. "WHITEFLIES (HEMIPTERA : ALEYRODIDAE) INFESTED ORCHARDS AND THEIR NATURAL ENEMIES IN EGYPT". Egyptian Journal of Agricultural Research, 90, 4, 2012, 1469-1496. doi: 10.21608/ejar.2012.163996
ABD-RABOU, S., AHMED, N. (2012). 'WHITEFLIES (HEMIPTERA : ALEYRODIDAE) INFESTED ORCHARDS AND THEIR NATURAL ENEMIES IN EGYPT', Egyptian Journal of Agricultural Research, 90(4), pp. 1469-1496. doi: 10.21608/ejar.2012.163996
ABD-RABOU, S., AHMED, N. WHITEFLIES (HEMIPTERA : ALEYRODIDAE) INFESTED ORCHARDS AND THEIR NATURAL ENEMIES IN EGYPT. Egyptian Journal of Agricultural Research, 2012; 90(4): 1469-1496. doi: 10.21608/ejar.2012.163996
WHITEFLIES (HEMIPTERA : ALEYRODIDAE) INFESTED ORCHARDS AND THEIR NATURAL ENEMIES IN EGYPT
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.
Abstract
Whiteflies (Aleyrodidiae: Hemiptera) are the most economic pests infested orchards trees in Egypt. The present work dealt with the whiteflies infested orchards and their natural enemies in Egypt as well as world literature of host plants, distribution and natural enemies of these pests. The results indicated that nine species of whiteflies were recorded infested orchards trees in Egypt as well as 8 new natural enemies associated with these pests. Also constructed key of the nine species of whiteflies was provided. The host plants, distribution and natural enemies were reported. The seasonal abundance of the black citrus whitefly ,Acaudaleyrodes rachipora (Singh) was studied for two successive years from 2010- 2011 on citrus trees in Qalyubyia .The obtained results showed that, the insect population reached maximum during April in first and second years, respectively. Numbers of Encarsia acaudaleyrodis reached maximum during April during the first and second years .There is no predators collected from this location. The seasonal abundance of sycamore whitefly, Aleurolobus marlatti (Quaintance) was studied for two successive years from 2010-2011 on sycamore trees .The obtained results showed that, the insect population reached maximum during May in the first and second years, respectively. Numbers by Encarsia elegans reached maximum during May during the first and the second years . The predator Orius lavigatus reached maximum during May of the first and the second years .The seasonal abundance of the olive whitefly, Aleurolobus olivinus (Silvestri) was studied for two successive years from 2010-2011 on olive trees in El-Arish .The obtained results showed that, the insect population reached maximum during June in first year and May in the second one. Numbers of Encarsia olivina reached maximum during June of the first year and May during the second one. There is no predators collected from this location. The seasonal abundance of the pomegranate whitefly, Siphoninus phillyreae (Haliday) was studied for two successive years from 2010-2011 on pomegranate trees in Assuit .The obtained results showed that, the insect population reached maximum during August in both first and second year. Numbers of Encarsia inaron reached maximum during August of the first year and September during second years .There is no predators collected from this location. Also the same study conducted during two successive years from 2010-2011 on pomegranate trees in Daqahlyia .The obtained results showed that, the insect population reached maximum during August in first and second years. Numbers of the predator Clitostethus arcuatus reached maximum during August of the first year and July during second years .There is no parasitoids collected from this location. During the present work the whitefly Bemisia afer (Priesner & Hosny) on citrus during 2010-2011 was very rarely in Behira and 47 and 62 individuals only collected during the first ad second years, respectively The numbers of the parasitoid, E. mundus was also very rarely,4 individuals only collected during the period of study.During the present work the whitefly Aleuroclava jasmini , the whitefly Bemisia afer(Priesner & Hosny) and the cotton whitefly, Bemisia tabaci and their parasitoids were very rarely on citrus during 2010-2011 in Qalyubiya. During the present work the citrus whitefly , Dialeurodes citri (Ashmead) and Japanese bayberry whitefly,Parabemisia myricae (Kuwana) on citrus during 2010-2011 was not recorded and collected during the period of study.
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