The 2005 ESA Annual Meeting and Exhibition
December 15-18, 2005
Ft. Lauderdale, FL

Please note: Recorded presentations are still being processed and added to the site daily. If you granted permission to record and do not see your presentation, please keep checking back. Thank you.

Saturday, December 17, 2005
D0374

Collembola (Arthropoda: Hexapoda) diversity in the soil of papaya orchards managed with conventional and integrated production in Espírito Santo, Brazil

Mark Culik, markculik@hotmail.com, José Aires Ventura, and David dos Santos Martins. INCAPER, Rua Afonso Sarlo 160, Vitória, Espírito Santo, Brazil

Collembola have significant influences on soil microorganisms and fertility but information on these ecologically important arthropods is lacking, especially in agricultural and tropical environments. This research was conducted to identify species present and study effects of agricultural practices on Collembola in the soil of papaya (Carica papaya) orchards in Espírito Santo, Brazil. Soil samples (4.8cm diameter, 10cm deep) were collected in Feb, May, Aug and Nov 2003 from papaya orchards under conventional (traditional management and pesticide application) and integrated production (selective pesticide application only when necessary based on pest monitoring) in one experimental site with 3 treatments (conventional, integrated with drip irrigation, integrated with microsprinkler irrigation) and 4 commercial orchards (2 with conventional, 2 with integrated production). Berlese-Tullgren funnels were used to extract Collembola from samples. Mean collembolan densities in the orchards ranged from 14,023-56,001 Collembola/m2. In the experimental site, Willemia brevispina, Folsomina cf. onychiurina, Folsomides cf. centralis, Folsomides parvulus, Cyphoderus cf. similis, and Neelus cf. minimus were more abundant with integrated versus conventional production. However, this difference was not observed in commercial orchards sampled. Results indicate that relatively high populations and diverse communities of Collembola occur in papaya orchards in Espírito Santo. However, no collembolan species were apparent as consistent biological indicators of conventional or integrated production.


Species 1: Collembola Isotomidae (Springtail)
Keywords: Tropical biodiversity, Mata Atlântica

Poster (.pdf format, 339.0 kb)