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The National Agricultural Library is one of four national libraries of the United States, with locations in Beltsville, Maryland and Washington, D.C. It houses one of the world's largest and most accessible agricultural information collections and serves as the nexus for a national network of state land-grant and U.S. Department of Agriculture field libraries. In fiscal year 2011 (Oct 2010 through Sept 2011) NAL delivered more than 100 million direct customer service transactions.

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Journal Article

Journal Article

Seasonality of salt foraging in honey bees (Apis mellifera)  [2017]

RACHAEL E.; BONOAN; TAYLOR M.; TAI; et al.

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1. Honey bees (Apis mellifera) prefer foraging at compound‐rich, ‘dirty’, water sources over clean water sources. As a honey bee's main floral diet only contains trace amounts of micronutrients – likely not enough to sustain an entire colony – it was hypothesised that honey bees forage in dirty water for physiologically essential minerals that their floral diet, and thus the colony, may lack. 2. While there are many studies regarding macronutrient requirements of honey bees, few investigate micronutrient needs. For this study, from 2013 to 2015, a series of preference assays were conducted in both summer and autumn. 3. During all field seasons, honey bees exhibited a strong preference for sodium in comparison to deionised water. There was, however, a notable switch in preferences for other minerals between seasons. 4. Calcium, magnesium, and potassium – three minerals most commonly found in pollen – were preferred in autumn when pollen was scarce, but were avoided in summer when pollen was abundant. Thus, as floral resources change in distribution and abundance, honey bees similarly change their water‐foraging preferences. 5. Our data suggest that, although they are generalists with relatively few gustatory receptor genes, honey bee foragers are fine‐tuned to search for micronutrients. This ability likely helps the foragers in their search for a balanced diet for the colony as a whole.
From the journal
Ecological entomology
ISSN : 0307-6946

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2017
Volume:
42 (2
Extent:
195-201
Publisher:
Blackwell Publishing Ltd
All titles:
"Seasonality of salt foraging in honey bees (Apis mellifera)"@eng
Other:
"JOURNAL ARTICLE"
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Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2017
Volume:
42 (2
Extent:
195-201
Publisher:
Blackwell Publishing Ltd
All titles:
"Seasonality of salt foraging in honey bees (Apis mellifera)"@eng
Other:
"JOURNAL ARTICLE"