CVC Vectors and Population Dynamics of Dilobopterus costalimai in Valencia Orange of Corrientes, Argentina
Citrus variegated chlorosis (CVC) is an important disease of sweet oranges; its causal agent is Xylella fastidiosa, a xylem limited gram negative bacterium transmitted by insects vectors (sharpshooter leafhoppers) (Hemiptera; Cicadellidae: Cicadellinae). The vectors were studied in 5 sites of Corrientes: 1-Colonia Tres de Abril-Bella Vista, 2Ambrosio-Saladas, 3-Monte Caseros, 4 and 5-Lomas SurBella Vista and the population dynamics of Dilobopterus costalimai was evaluated at INTA Bella Vista Experiment Station, in a grove of 784 plants of Valencia Late orange on Rangpur, by using yellow sticky traps replaced monthly. Marked shoots of 0. 5 - lcm (10 per plant, 64 plants) were measured weekly (length in cm) until they stop growing and six months later the presence of symptoms was registered. The species Dilobopterus costalimai Young, the most important CVC vector in Brazil, was present in all sites; the maximum values were obtained in fallwinter in almost all sites. At the EEA-Bella Vista D. costalimai increased from December to May during 2002 —2003 and 2004 -2005. When shooting was abundant and grew for longer periods in coincidence with abundant rainfall and average temperatures between 20t and 25℃, higher population level was observed and as a consequence, the CVC symptoms increased six months later. Molomea lineiceps Young the other species trapped in high number was not studied butanother species in this genus is cited as potential vector in Brazil. Species captured in lower number and considered vectors were; Bucephalogonia xanthopis (Berg) , Sonesimia grossa (Signoret) and Acrogonia sp.
Oranges Valencia Irrigation Vegetative growing Environmental factors Bacterium
V. M. Beltran D. R. Taiariol S. Caceres H. M. Zubrzycki L. D. Ploper E. Willink L. Augier
INTA Bella Vista, Corrientes, Argentina, CP 3432-CC iV°5 EEA Obispo Colombres, Las Talitas, Tucuman,Argentina, CP 4101 -CC N° 9 EEA Obispo Colombres, Las Talitas, Tucuman,Argentina, CP 4101 -CC N°
国际会议
11th International Citrus Congress(第11届国际柑橘大会)
武汉
英文
1129-1137
2008-10-01（万方平台首次上网日期，不代表论文的发表时间）