Palynological analysis: Our results showed differences in diversity and foraging uniformity; the diversity index (H) showed values of 1.10-2.36 with a uniformity distribution of species in each sample, meanwhile the Pielou index (0.40-0.75) explained that when the dominance of the species is higher over the others, the value will tend more strongly toward zero, indicating an oligolectic
behavior from bees.
However, this selection is not so strict and cannot indicate a monolectic or oligolectic
This has been observed in both polylectic bees  and oligolectic
bees ; therefore, pollen quality is defined by the bee species that associate with a given plant species.
Schlindwein C (2004) Are oligolectic
bees always the most effective pollinators?
To understand the patterns of competitive interactions in arid environments, we observed native and non-native bees in the Tehuacan desert in Mexico to determine whether individuals of the oligolectic
bee Lithurgus littoralis Cockerell (Hymenoptera: Megachilidae) displayed agonistic behavior to A.
Astrophytum asterias, Echinocereus spp., Ferocactus spp.), medium-large cactus specialist (= oligolectic
) solitary bees (e.g.
Colour-coded sampling: the pan trap colour preferences of oligolectic
and nonoligolectic bees associated with a vernal pool plant.
For the combination of hummingbird and oligolectic
bee, fitness trade-offs seem inevitable.
Most bee species observed were polylectic; that is, they forage for pollen on a diverse array of plant species, and few of them were oligolectic
Through this work, he determined that the blueberry bee, originally thought of as being oligolectic
was in South Georgia functioning as a mesolectic species foraging on a wider range of plant species than originally reported in previous studies.
longicornis, two species oligolectic
on Fabaceae (Westrich, 1989) that have undergone a massive decline in England (Falk, 1991) and in the Netherlands (Peeters & Reemer, 2003).