10.5061/DRYAD.MW6M905X4
Hollens-Kuhr, Hilke
0000-0003-0438-8156
University of Münster
van der Niet, Timotheüs
University of KwaZulu-Natal
Cozien, Ruth
University of KwaZulu-Natal
Kuhlmann, Michael
Kiel University
Pollinator community predicts trait-matching between oil-producing flowers
and a guild of oil-collecting bees
Dryad
dataset
2021
Pollination ecology
Rediviva
Diascia
trait-mismatching
Plant-pollinator interaction
2021-07-17T00:00:00Z
2021-07-17T00:00:00Z
en
https://doi.org/10.5281/zenodo.5171729
16802 bytes
6
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The impact of pollinator community diversity on trait-matching in
plant-pollinator interactions is poorly studied, even though many
mutualisms involve multiple interaction partners. We studied ten
communities in which one to three species of oil-collecting Rediviva bee
pollinate the long-spurred, oil-producing flowers of Diascia ‘floribunda’
to examine how pollinator diversity affects covariation of functional
traits across sites and trait-matching within sites. Floral spur-length
was significantly correlated with weighted grand mean foreleg length of
the local bee community but not with foreleg length of individual bee
species. The closeness of trait-matching varied among populations and was
inversely related to pollinator community diversity. For all bee species,
trait-matching was closest at sites characterized by exclusive, pairwise
interactions. Reduced trait-matching associated with increased community
diversity for individual pollinator species, but close matching at the
community level support the importance of community context for shaping
interacting traits of flowers and pollinators.
The dataset contains the data of forleg length and spur length of all
collected Rediviva bees and Diascia flowers at each site. Forelegs of
2–56 females of each Rediviva species per site were measured. Bees were
collected with a sweep net and stored in 96% ethanol. The right foreleg
was removed and foreleg segments (disti + mediotarsus, basitarsus, tibia,
femur, trochanter, coxa) were measured to the nearest 0.01 mm using a
Keyence VHX 500 F digital microscope following the method described by
Steiner and Whitehead (1990). Foreleg length was calculated as the sum of
the individual foreleg segments. The right spurs of freshly collected
flowers of Diascia floribunda were longitudinally sectioned prior to
measurement. Length of spur entrance area, proximal and apical elaiophores
fields and the gap between fields were measured to the nearest 0.01 mm
using a Dino-Lite Digital Microscope AD-413T as per the methods described
in Hollens et al. (2017). Total spur length was calculated as the sum of
the individual segments. Hollens H, van der Niet T, Cozien R, Kuhlmann M.
2017 A spur-ious inference: Pollination is not more specialized in
long-spurred than in spurless species in Diascia-Rediviva mutualisms.
Flora 232, 73–82. (doi:10.1016/j.flora.2016.12.006) Steiner KE, Whitehead
VB. 1990 Pollinator adaptation to oil-secreting flowers – Rediviva and
Diascia. Evolution 44, 1701–1707. (doi:10.1111/j.1558-5646.1990.tb03857.x)