PERFORMANCE OF TETRANYCHUS URTICAE AND NEOSEIULUS CALIFORNICUS ON STRAWBERRY CULTIVARS AND ASSESSMENT OF THE EFFECT OF GLANDULAR TRICHOMES.

GUGOLE OTTAVIANO ,M.F; SÁNCHEZ, N. E; ROGGIERO,M.F; GRECO, N. M

ARTHROPOD-PLANT INTERACTIONS

SPRINGER

Lugar: Berlin; Año: 2013 p. 1 - 8

1872-8855

The performance of Tetranychus urticae and its predator Neoseiulus californicus on ten strawberry cultivars was determined in the laboratoty. Development time and survival of T. urticae from egg to adult were recorded on Albión, Aromas, Camarosa, Diamante, Festival, Kp, Sabrosa, Selva, Sweet Charlie and Whitney. Fecundity of newly molted and mated females was recorded during the first 10 days of oviposition. Predation rate and fecundity of N. californicus were tested on Albión, Aromas, Festival, Kp, Sabrosa and Whitney. Predator females reared on each cultivar were placed individually in experimental units, and the number of eggs per day was counted during three days. Cultivar with high hairiness (Albión, Aromas and Festival) and cultivars with low hairiness (Sabrosa, Whitney and KP) were identified to assess the effect on the performance of both species. Development time, survival from egg to adult, and fecundity of T. urticae differed among cultivars. Festival was classified as moderately resistant, Aromas and Kp were moderately susceptible and the others were intermediate. The number of preys consumed per day per female of N. californicus differed between cultivars and time. Fecundity of N. californicus did not differed among cultivars, however it did over time. The development time and fecundity of T. urticae did not differ among high and low hairiness cultivars. The glandular hairiness affected neither consumption nor fecundity of N. californicus. According to detrimental and propitious effect on T. urticae and N. californicus performance, respectively, we concluded that Festival and Albión could be used along with this predator in T. urticae management programs.