Biologia de Tetranychus mexicanus (McGregor) (Acari: Tetranychidae) em três espécies de Annonaceae

Abstract

-The mite Tetranychus mexicanus (McGregor) is considered a pest of a variety of plant species in the Americas. Although this mite apparently causes economic damage to Annonaceae, little is known about its biology. Here we studied the biology of T. mexicanus on soursop (Annona muricata), sweetsop (Annona squamosa) and araticum (Annona coriaceae). The fi rst two species are the most important economical Annonaceae species in northeast Brazil; araticum is commonly found in the region, but not commercially explored. The mites were collected in the fi eld from leaves of A. muricata and maintained in the laboratory for six months on detached leaves of A. muricata, A. squamosa and A. coriaceae, respectively, before observations started. Tetranychus mexicanus developed more slowly on A. squamosa than on the two other hosts, but oviposition was considerably lower on A. coriaceae. As indicated by the calculated life table parameters, biotic potential was higher on A. muricata than on the other hosts. Despite the observed differences in the T. mexicanus biology on the different evaluated hosts, development and reproduction were satisfactory in all of the hosts used.

Identification of exotic pest and Australian native and naturalised species of Tetranychus (Acari: Tetranychidae)

“…Its outbreaks seem to be sporadic and mostly restricted to unhealthy plants (Quiros-Gonzalez 2000;Gerson 2003). This species could have a minor impact on citrus (Gerson 2003), and several other cropping systems in tropical and warm subtropical areas, such as soursop (Sousa de et al 2010). (André, 1933) (Fig.…”

Biological parameters of Tetranychus mexicanus (McGregor) (Acari: Tetranychidae) in papaya and passion fruit

“…The biology of T. mexicanus is still poorly understood, having been studied in some Annonaceae (Annona coriacea Mart., A. muricata L. and A. squamosa L.), peach palm (Bactris gasipaes Kunth) and citrus [Citrus aurantifolia (Christm.)] (Paschoal 1968, Sousa et al 2010, Stein & Daólio 2012. For papaya and passion fruit, there is still no information on population estimates, including their development, survival and reproduction.…”

Selection of full and half brothers families of yellow passionfruit resistant to Tetranychus mexicanus

“…The Mexican mite Tetranychus spp. is polyphagous and has several plant species as hosts, such as passionfruit, peach-palm, and annonaceae (DOMINGUEZ-GIL; MCPHERON, 1992;SOUSA et al, 2010;STEIN;DAÓLIO, 2012). The control of mite of the genus Tetranychus spp.…”