Abstract
Random amplified polymorphic DNA (RAPD) markers were used to analyze the genetic structure of Eufriesea violacea populations in three fragments (85.47, 832.58 and 2800 ha) of Atlantic rainforest located in the north of the Brazilian state of Paraná. A total of twelve primers produced 206 loci, of which 129 were polymorphic (95% criterion). The proportions of polymorphic loci in each population ranged from 57.28% to 59.2%, revealing very similar levels of genetic variability in the groups of bees from each fragment. Unbiased genetic distances between groups ranged from 0.0171 to 0.0284, the smallest genetic distance occurring between bees from the two larger fragments. These results suggest that the E. violacea populations from the three fragments have maintained themselves genetically similar to native populations of this species originally present in northern Paraná.
Highlights
Random amplified polymorphic DNA (RAPD) markers were used to analyze the genetic structure of Eufriesea violacea populations in three fragments (85.47, 832.58 and 2800 ha) of Atlantic rainforest located in the north of the Brazilian state of Paraná
Male euglossines are not tied to a nest but leave it upon hatching (Dodson, 1966; Dressler, 1982) and both female and male euglossine bees often fly long distances between dispersed resources, making them especially important in crosspollination of widely scattered plant species in tropical forests (Janzen, 1971)
The aim of our study was to use RAPD markers to investigate the genetic variability and structure of Eufriesea violacea populations occurring in three southern Brazilian Atlantic rainforest remnants
Summary
Random amplified polymorphic DNA (RAPD) markers were used to analyze the genetic structure of Eufriesea violacea populations in three fragments (85.47, 832.58 and 2800 ha) of Atlantic rainforest located in the north of the Brazilian state of Paraná. Some studies have shown that habitat fragmentation may adversely affect populations of such pollinators and evidence suggests that in isolated Brazilian rainforest fragments there has been a decline in the number of males in some euglossine species (Powell and Powell, 1987; Becker et al, 1991).
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