Fig 7. Atomic per cent excess in workers and larvae after a
pulse of 13C and 15N isotopes.
Workers became highly enriched rapidly (they collect the material) and
then food was transferred to larvae by 96h. While not statistically
significant, the atomic enrichment of 13C trends
toward being higher in larvae at 96h while there is no pattern of
difference in 15N; this is opposite what was
predicted. This assay was carried out with a single diet (ML,
Medium-Low) in a subset of Lasius neoniger colonies. Variation is
expressed as confidence intervals.