Floral constancy in bumble bees: handling efficiency or perceptual conditioning?

Oecologia ◽  
1996 ◽  
Vol 106 (4) ◽  
pp. 493-499 ◽  
Author(s):  
Paul Wilson ◽  
Melissa Stine
Keyword(s):  
Bumble Bees ◽  
Floral Constancy

The Proventriculus of Adult Bumble Bees (Bombinae, Apidae)

1976 ◽  
Vol 6 (2) ◽  
pp. 189-189 ◽  
Author(s):  
R. P. Macfarlane
Keyword(s):  
Bumble Bees

Body mass and sex, not local climate, drive differences in chill coma recovery times in common garden reared bumble bees

2021 ◽  
Author(s):  
K. Jeannet Oyen ◽  
Laura E. Jardine ◽  
Zachary M. Parsons ◽  
James D. Herndon ◽  
James P. Strange ◽  
...  
Keyword(s):  
Body Mass ◽  
Common Garden ◽  
Bumble Bees ◽  
Local Climate ◽  
Chill Coma ◽  
Recovery Times

scholarly journals Landscape Enhancements in Apple Orchards: Higher Bumble Bee Queen Species Richness, but No Effect on Apple Quality

Insects ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 421
Author(s):  
Amélie Gervais ◽  
Marc Bélisle ◽  
Marc J. Mazerolle ◽  
Valérie Fournier
Keyword(s):  
Species Richness ◽  
Bumble Bees ◽  
Bumble Bee ◽  
Pesticide Use ◽  
Apple Orchards ◽  
Seed Number ◽  
Apple Production ◽  
Apple Quality ◽  
Effective Pollinators ◽  
Quality Weight

Bumble bees are among the most effective pollinators in orchards during the blooming period, yet they are often threatened by the high levels of pesticide use in apple production. This study aimed to evaluate the influence of landscape enhancements (e.g., hedgerows, flower strips) on bumble bee queens in apple orchards. Bumble bee queens from 12 orchards in southern Québec (Canada) were marked, released, and recaptured in the springs and falls of 2017 to 2019. Half of the 12 orchards had landscape enhancements. Apples were harvested in 2018 and 2019 to compare their quality (weight, diameter, sugar level, and seed number) in sites with and without landscape enhancements. Species richness, as well as the occurrence of three species out of eight, was higher in orchards with landscape enhancements than in orchards without such structures. The occurrence of Bombus ternarius was lower in orchards with high levels of pesticide use. Apples had fewer seeds when collected in orchards with landscape enhancements and were heavier in orchards that used more pesticides. Our work provides additional evidence that landscape enhancements improve bumble bee presence in apple orchards and should therefore be considered as a means to enhance pollination within farms.

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