30 cc of the mix was placed in each of two 2-oz plastic cups (Dixie PL2C) and positioned. Overall, our results indicate that transformation of native Cerrado habitats into crop plantations reduces the abundance of some important predatory species, notably those that forage belowground, and this may negatively affect the potential for ants to provide pest control services in agroecosystems. Key Words Vespula, wasp, baiting, trapping, attractant, lure. In contrast, the main predators aboveground were omnivore ants of the genera Pheidole and Solenopsis, which had similar abundances in the crop and non-crop sites. Army ants (subfamily Dorylinae) were the main predatory species belowground, and their abundance was significantly greater in non-crop sites. A bait container with 40 g of human and pig dung. Bait traps caught 29 species, whereas pitfall traps caught 31 species. Pitfall traps were 1-L plastic recipients buried at ground level and containing 250 ml of saline solution (water, liquid detergent, and salt). The cheese was used as bait to lure ants in the direction of the traps so. They belonged to four subfamilies, 17 genera, and 32 species. Pitfall trapping was found to be an unreliable way of determining the struc. A total of 31,732 ants were collected from pitfall traps and 54,694 ants were collected from bait traps. non-crop sites even though there were significantly more species of ants foraging aboveground in the non-crop sites. A comparison of pitfall traps with bait traps for sampling leaf litter ants was studied in oak-dominated mixed forests during 19951997. In contrast, we did not detect any significant difference in above-ground predation rates between crop vs. Bait traps in each prairie were placed at least 10 m apart from each other. Belowground predation rates were significantly greater in the non-crop sites, despite the lack of difference in overall abundance and species richness of ants foraging belowground between the crop vs. (Coleoptera: Tenebrionidae), as baits, simulating crop herbivores. Above-and belowground rates of ant predation were estimated at these same sites using mealworms, Tenebrio molitor L. The mixture employed in the traps can affect the rate of catch. However, oil and palm oil around the trap does not increase Plastic pitfall traps are. Pitfall traps are widely used to sample soil arthropods. We expected pitfall traps were less likely to be dominated by predacious species because this is a more. A survey of the ant faunas foraging above-and belowground was performed in six crop and six non-crop (i.e., native vegetation) sites. Use of mixture of soybean plastic traps (Vennila and Rajagopal, 1999). Pitfall traps were open for a duration of 24 h, though not on the same day as bait traps. Here, we evaluated how the transformation of Cerrado savanna habitats into crop plantations affects the abundance, diversity, and the predatory activity of ants. Anthropogenic disturbances often affect the abundance and diversity of ants (Hymenoptera: Formi-cidae) but relatively few studies have explored the implications of such changes on the ecosystem services mediated by these insects.
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