@article{BoffFriedel2021,
  author    = {Boff, Samuel and Friedel, Anna},
  title     = {Dynamics of nest occupation and homing of solitary bees in painted trap nests},
  series = {Ecological Entomology},
  volume    = {46},
  journal   = {Ecological Entomology},
  number    = {2},
  doi       = {10.1111/een.12965},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-224605},
  pages     = {496 -- 499},
  year      = {2021},
  abstract  = {1. The oil-collecting bee Centris analis (Fabricius, 1804) is an important pollinator for the Neotropical region. The species can be attracted to nest in human-made cavities. Such trap nests or insect hotels offer the opportunity to study the behaviour of populations in semifield conditions. 2. We studied a newly established trap nest aggregation of C. analis in Mato Grosso do Sul, Brazil and tested the effect that differentially painted nesting options have on the rate of nest foundation, and on the ability of relocating the nest when returning from a foraging trip (homing behaviour). Moreover, we tested if the duration of foraging trips decreased with time. 3. We found that females preferred to nest in painted nests compared to unpainted nests, with blue nests being the most occupied ones, followed by purple, yellow, white, and green. Furthermore, bees improved their homing behaviour with time, however, nest colour did not seem to have an effect on this process. Moreover, we found that bees reduce the duration of their foraging trips with time. This could be an indicator of improved foraging efficiency through learning. 4. These findings could inform a new and fruitful line of research on the behaviour and ecology of trap nesting solitary bees.},
  language  = {en}
}
@article{BoffHenriqueFriedeletal.2020,
  author    = {Boff, Samuel and Henrique, Jessica Amaral and Friedel, Anna and Raizer, Josu{\´e}},
  title     = {Disentangling the path of pollinator attraction in temporarily colored flowers},
  series = {International Journal of Tropical Insect Science},
  volume    = {41},
  journal   = {International Journal of Tropical Insect Science},
  doi       = {10.1007/s42690-020-00323-4},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-235402},
  pages     = {1305-1311},
  year      = {2020},
  abstract  = {Plants may use different strategies to attract pollinators in long distance (e.g. floral display) and in short distance (e.g. ratio between differentially colored flowers) scales. The Verbenaceae Lantana canescens Kunth is a wide spread species in open sites of the Brazilian Pantanal wetland. Individuals of this generalist species can produce a variable number of open inflorescences with yellow and white flowers that are organized in whorls. In this study we tested the hypothesis that increased floral display (long distance attraction) and the ratio between yellow and white flowers (short distance attraction) enhances the number of pollinator species and individuals. We observed flower visitors and calculated floral parameters in 38 plots of 1 m2 each, that contained a varying number of flowering L. canescens individuals. Non-metric multidimensional scaling and Bray-Curtis distances were used to account for flower visitor composition and the relative visitation rate, respectively. We used a structural equation model to test the power of each predictor variable on the visitation rate and a covariance analysis to disentangle the effect of each independent variable on the frequency of plant-pollinator interactions. We found that the number of flower visitors and the visitation rate increased with increasing number of inflorescences. Disentangling long and short distance attraction indicated that the number of inflorescences (per plot) and the number of yellow flowers (yellowing effect) contributed most to flower visitation at long and short distance, respectively.},
  language  = {en}
}