SciELO - Scientific Electronic Library Online

 
vol.37 issue3Spatial analysis of the distribution of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) and losses in maize crop productivity using geostatisticsDevelopment and evaluation of new methodologies to test the attractiveness of Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae) to visual stimulation by colors in laboratory conditions author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Neotropical Entomology

Print version ISSN 1519-566X

Abstract

ALBUQUERQUE, Fábio A. de  and  MORAES, Gilberto J. de. Perspectives for mass rearing of Iphiseiodes zuluagai Denmark & Muma (Acari: Phytoseiidae). Neotrop. entomol. [online]. 2008, vol.37, n.3, pp. 328-333. ISSN 1519-566X.  http://dx.doi.org/10.1590/S1519-566X2008000300013.

Iphiseiodes zuluagai Denmark & Muma is an important predator of Brevipalpus phoenicis (Geijskes) on citrus in Brazil. The suitability of Tyrophagus putrescentiae (Schrank) as a food source of I. zuluagai in laboratory rearing was investigated at 25.5 ± 0.5oC, 88 ± 7% RU and photophase of 12h. Initially, levels of oviposition of the predator fed on eggs were evaluated, as well as the dead or live post-embryonic stages of T. putrescentiae, in a period of 10 days. The daily oviposition rate was 1.3 egg per female when they were fed on eggs on T. putrescentiae, 0.7 egg per female when they were fed on dead post embryonic stages and about 0.3 egg per female when they were fed on live post-embryonic stages. Later, the life table of I. zuluagai was constructed, when eggs of T. putrescentiae were offered to the predators as prey. The immature stages were observed every 8h, to determine the corresponding durations. In the adult phase, the mites were observed every 24h, to determine the reproductive parameters. The intrinsic rate of natural increase (rm) was 0.11 female/ female/day; resulting in a finite rate of increase of 1.11 (l). The net reproductive rate (R0) was 7.1 females/generation, with a mean generation time (T) 18.6 days. The results show that T. putrescentiae is a favorable food source for the development of I. zuluagai.

Keywords : Citrus; Brevipalpus phoenicis; predatory mite; Astigmata.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese