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Seasonality of salt foraging in honey bees ( Apis mellifera )
Author(s) -
BONOAN RACHAEL E.,
TAI TAYLOR M.,
TAGLE RODRIGUEZ MARLEN,
FELLER LAINE,
DADDARIO SALVATORE R.,
CZAJA REBECCA A.,
O'CONNOR LUKE D.,
BURRUSS GEORGIANA,
STARKS PHILIP T.
Publication year - 2017
Publication title -
ecological entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.865
H-Index - 81
eISSN - 1365-2311
pISSN - 0307-6946
DOI - 10.1111/een.12375
Subject(s) - biology , foraging , honey bee , forage , pollen , generalist and specialist species , brood , nectar , honey bees , apidae , botany , hymenoptera , pollinator , ecology , pollination , habitat
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.