O uso de diferentes métodos para amostragem da fauna de abelhas (Hymenoptera: Apoidea), um estudo em floresta ombrófila mista em Santa Catarina

Abstract

-A survey of the bee fauna of Araucaria Forest was performed in the border of a fragment in the district of Porto União, in Santa Catarina State. Samples were carried on monthly between October/2005 and October/2006 with hand nets directly on the fl owers, besides three types of traps: chemical baits, trap nests and pantraps. A total of 1711 bees were captured belonging to 164 species, distributed in fi ve families of bees that occur in Brazil. From the total 1339 bees of 130 species were sampled with the hand net, 346 individuals of 72 species were collected in pantraps, 24 bees of nine species were caught in the trap nests and two specimens of one species were sampled with baits. At most 48 species were common to two or more sample methods. Dialictus, with 27 species, was the most representative genus in the area. The exotic Apis mellifera L. was the most abundant species, representing 49.6% of the sampled bees, following by Dialictus sp.11 with 3.2%. The results show evidences of a seasonal pattern of activity of the bees and the importance of the use of complementary methods to survey the fauna. The composition of the bee fauna was similar to many inventories performed in the Araucaria Forest, being Halictidae the most diverse family followed by Apidae.

Trap-nesting bees and wasps (Hymenoptera, Aculeata) in a Semidecidual Seasonal Forest fragment, southern Brazil

“…The occupation rate is variable, a 7% was found by Buschini & Buss (2010) for Pachodynerus, a number considered low by the author, but higher than ours. As examples of considered low values we cite 8.5% of Krug & Alves-dos-Santos (2008), who used bamboo nests and also wooden tubes and 10% of Loyola & Martins (2006), which uses wooden tubes. It is possibly that the additional use of wooden tubes could raise the number of species and nests (Teixeira, 2011).…”

“…Artificial tubes and bamboo internodes as nesting substrate have been used as sampling method in inventories (Krug & Alves-dos-Santos, 2008) or as ecological indicators of habitat disturbances, such as habitat loss or edge effect (Stangler et al, 2015). A recent study shows that trap nests have higher occupancy compared to natural potential nesting cavities, possibly because they offer an appropriate shelter for offspring and food storage (Westerfelt et al, 2015).…”

Abelhas (Hymenoptera, Apidae sensu lato) do Estado de Mato Grosso do Sul, Brasil

“…A varredura com rede entomológica em flores no presente estudo registrou o maior número de indivíduos e espécies, sendo 78 espécies capturadas somente com essa técnica, com valores próximos ao amostrado por Krug & Alves-dos-Santos (2008), em Mata Ombrófila, Porto União -SC, quando coletaram 83 espécies, e obtiveram uma abundância total através de vários métodos de 1.339 espécimes de abelhas correspondendo a 130 espécies. Esses autores utilizaram também ninhos-armadilha e essências.…”

“…Dentre os levantamentos feitos no Brasil, apenas recentemente as bandejas amarelas foram empregadas em inventários e apontam uma eficiência relativamente maior em comparação à captura em flores (Krug & Alves-dos-Santos, 2008;Souza & Campos, 2008). Essa metodologia é muito utilizada na Costa Rica e, na América do Norte, faz parte das técnicas tradicionais de amostragem em trabalhos faunísticos de Hymenoptera (Darling & Packer, 1988;Hanson & Gauld, 1995 Zanella, 2002 6 X Lophopedia minor Aguiar, 2009 6 X Lophopedia nigrispinis (Vachal, 1909) 6 X Lophopedia pygmaea (Schrottky, 1902) I, III, V 1, 2, 6 MUBIO X Lophopedia sp.…”

Preliminary results of bowl trapping bees (Hymenoptera, Apoidea) in a southern Brazil forest fragment

“…This method has recently gained increased attention among melittologists, especially after the contribution of Droege et al (2010). Published studies from Brazil reached to different conclusions about the performance of this sampling method, some reporting efficient captures (Krug & Alves-Dos-Santos 2008;Souza & Campos 2008), but others reporting very poor performances (Gonçalves & Brandão 2008;Gonçalves et al 2012). Currently, at least 11 studies using pan traps have been carried out in different regions of the country (as reported by Simões et al 2012).…”