17723
2018
eng
12353
8
article
1
2019-02-25
--
--
Social bees are fitter in more biodiverse environments
Bee population declines are often linked to human impacts, especially habitat and biodiversity loss, but empirical evidence is lacking. To clarify the link between biodiversity loss and bee decline, we examined how floral diversity affects (reproductive) fitness and population growth of a social stingless bee. For the first time, we related available resource diversity and abundance to resource (quality and quantity) intake and colony reproduction, over more than two years. Our results reveal plant diversity as key driver of bee fitness. Social bee colonies were fitter and their populations grew faster in more florally diverse environments due to a continuous supply of food resources. Colonies responded to high plant diversity with increased resource intake and colony food stores. Our findings thus point to biodiversity loss as main reason for the observed bee decline.
Scientific Reports
10.1038/s41598-018-30126-0
urn:nbn:de:bvb:20-opus-177231
Scientific Reports (2018) 8:12353. DOI: 10.1038/s41598-018-30126-0
false
true
CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International
Benjamin F. Kaluza
Helen M. Wallace
Tim A. Heard
Vanessa Minden
Alexandra Klein
Sara D. Leonhardt
eng
uncontrolled
biodiversity
eng
uncontrolled
ecosystem services
eng
uncontrolled
social bees
eng
uncontrolled
fitness
Arthropoden (Gliederfüßer)
open_access
Theodor-Boveri-Institut für Biowissenschaften
Förderzeitraum 2018
Universität Würzburg
https://opus.bibliothek.uni-wuerzburg.de/files/17723/Kaluza_Scientific_Reports.pdf
20060
2020
eng
125
2
11
article
1
--
2020-02-15
--
Floral Species Richness Correlates with Changes in the Nutritional Quality of Larval Diets in a Stingless Bee
Bees need food of appropriate nutritional quality to maintain their metabolic functions. They largely obtain all required nutrients from floral resources, i.e., pollen and nectar. However, the diversity, composition and nutritional quality of floral resources varies with the surrounding environment and can be strongly altered in human-impacted habitats. We investigated whether differences in plant species richness as found in the surrounding environment correlated with variation in the floral diversity and nutritional quality of larval provisions (i.e., mixtures of pollen, nectar and salivary secretions) composed by the mass-provisioning stingless bee Tetragonula carbonaria (Apidae: Meliponini). We found that the floral diversity of larval provisions increased with increasing plant species richness. The sucrose and fat (total fatty acid) content and the proportion and concentration of the omega-6 fatty acid linoleic acid decreased, whereas the proportion of the omega-3 fatty acid linolenic acid increased with increasing plant species richness. Protein (total amino acid) content and amino acid composition did not change. The protein to fat (P:F) ratio, known to affect bee foraging, increased on average by more than 40% from plantations to forests and gardens, while the omega-6:3 ratio, known to negatively affect cognitive performance, decreased with increasing plant species richness. Our results suggest that plant species richness may support T. carbonaria colonies by providing not only a continuous resource supply (as shown in a previous study), but also floral resources of high nutritional quality.
Insects
2075-4450
10.3390/insects11020125
urn:nbn:de:bvb:20-opus-200605
Insects 2020, 11(2), 125; https://doi.org/10.3390/insects11020125
false
true
CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International
Moritz Trinkl
Benjamin F. Kaluza
Helen Wallace
Tim A. Heard
Alexander Keller
Sara D. Leonhardt
eng
uncontrolled
floral resources
eng
uncontrolled
plant-insect interactions
eng
uncontrolled
nutrition
eng
uncontrolled
biodiversity
eng
uncontrolled
bee decline
Biowissenschaften; Biologie
open_access
Theodor-Boveri-Institut für Biowissenschaften
Import
Center for Computational and Theoretical Biology
Universität Würzburg
https://opus.bibliothek.uni-wuerzburg.de/files/20060/insects-11-00125.pdf