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  • Title: Mini-winkler extractor and pitfall trap as complementary methods to sample formicidae.
    Author: Silva FH, Delabie JH, dos Santos GB, Meurer E, Marques MI.
    Journal: Neotrop Entomol; 2013 Aug; 42(4):351-8. PubMed ID: 23949854.
    Abstract:
    The aim of the present study was to evaluate the use of mini-Winkler extractor and pitfall traps as appropriate and complementary methods to sample ant communities in the phytophysiognomy mosaic in the Poconé Pantanal region, state of Mato Grosso, Brasil. Seven units were studied for landscape, located within a 25 km(2) collection area, formed by thirty 250-m transects, at 1-km intervals in a 5 × 5 km area. Five collection points were marked in each transect at 50-m intervals, totaling 150 points. A collection was made at each sampling point with mini-Winkler extractor and pitfall traps. Using the mini-Winkler extractor, 1,088 individuals were collected distributed in 20 genera and 55 species, with Solenopsis invicta Buren and Pheidole (gr. biconstricta) sp.1 as the most frequent ants. Using pitfall traps, 2,726 individuals distributed in 24 genera and 48 species were sampled and Dorymyrmex (gr. pyramicus) sp.1 and Pheidole (gr. biconstricta) sp.1 were the most frequent species. A significant difference between the methods was observed in measured species number. The Principal coordinates analysis discriminated two species groups exclusively sampled by the mini-Winkler extractor and another by the pitfall methods. Therefore, it was concluded that these methods were complementary for ant diversity inventories in the Poconé Pantanal region.
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