Abstract
Trap-nesting bee and wasp inventories are common in Brazil but many phytophysiognomies are still poorly studied. The main objective of this study is to survey trap-nesting bees and wasps in a Semidecidual Seasonal Forest fragment. Also, we test the differences on nesting between interior and edge transects. A sum of 1,500 trap nests was made with bamboo cane internodes and two consecutive years were monitored. In the first year 46 nests were occupied by Pachodynerus grandis (19 nests), Pachodynerus guadulpensis (19), Centris analis (two), and Centris tarsata, Megachile fiebrigi, Megachile guaranitica, Megachile susurrans, Trypoxylon sp and Zethus smithii with one nest each. No statistical differences were found between interior and edge transects for richness and occupation rate, but the species composition was different. In the second year 39 nests were occupied by four species, three previously recorded, C. analis (seven nests), P. guadulpensis and P. grandis (six nests each), plus Monobia angulosa with 15 nests. Parasitoids from four families and one cleptoparasite were recorded and the mortality rate was higher in bees than in wasps. These findings reinforce the notion that trap nests assemblages from different studies are not directly comparable for richness and composition.
Highlights
Hymenoptera (Aculeata) includes key organisms, as parasitoids, pollinators and predators, which can respond to habitat fragmentation acting as ecological indicators (Calvillo et al, 2010) since its local diversity are frequently correlated to variables of forest fragments as size, connectivity and edge effect (Gonçalves et al, 2014)
This study aimed to provide survey data on bees and wasps nesting in bamboo trap nests in a Semidecidual Seasonal Forest fragment
15 sets were installed on each transect, totaling 375 trap nests by transect, and on the second phase, 30 sets were installed on T2, totaling 750 trap nests
Summary
Hymenoptera (Aculeata) includes key organisms, as parasitoids, pollinators and predators, which can respond to habitat fragmentation acting as ecological indicators (Calvillo et al, 2010) since its local diversity are frequently correlated to variables of forest fragments as size, connectivity and edge effect (Gonçalves et al, 2014). Bees and wasps have distinct needs of food sources and some groups of species are specialized in certain nesting substrates. Most nests are excavated in the soil, some females excavate their nests in natural or even human made cavities (Camillo et al, 1995). Bees and wasps that nest in wood cavities usually are solitary and make one to several brood cells divided by transverse partitions, and, in addition to the place, the females require other resources to nest construction such as mud, wax, oil, plant leaves and petals (Camillo, 2000). 1. Universidade Federal do Paraná, Departamento de Biodiversidade, Setor Palotina. Rua Pioneiro, 2.153, Dallas, CEP 85950‐000, Palotina, PR, Brazil
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
