... glossophaginid bats, and could play an important role in the onset of torpor in these tropical animals. We measured the effect that diet quality and T a had on the use of torpor by the nectar-feeding bats Glossophaga soricina and Leptonycteris yerbabuenae . Captive bats were fed with 5% (low) or 35% (high...

...Ricarda Scheiner; Leonora Kulikovskaja; Markus Thamm Honey bees display a fascinating division of labour among foragers. While some bees solely collect pollen, others only collect nectar. It is assumed that individual differences in sensory response thresholds are at the basis of this division...

...Susan W. Nicolson SUMMARY Avenues of water gain and loss in bees are examined here at two levels of organisation: the individual and the colony. Compared with the majority of terrestrial insects, bees have a high water turnover. This is due to their nectar diet and, in larger species, substantial...

...Todd J. McWhorter; Carlos Martínez del Rio; Berry Pinshow; Lizanne Roxburgh SUMMARY Although the renal responses of birds to dehydration have received significant attention, the consequences of ingesting and processing large quantities of water have been less studied. Nectar-feeding birds must...

.... Despite nectar intake rates that may reach more than five times body mass per day, hummingbirds appear to absorb all ingested water. Here, we report the results of experiments designed to examine the relationship between nectar intake and water turnover in nectar-feeding Palestine sunbirds( Nectarinia...

... that in hummingbirds only a small fraction of this dietary water may be absorbed in the intestine. Here, we report the results of experiments designed to examine the relationship between nectar intake and water turnover in hummingbirds. Our results also allow the estimation of water absorption across the intestine...

...F. Reed Hainsworth; Elizabeth Precup; Tracy Hamill ABSTRACT Volume and energy ingestion rates, meal sizes (intakes to satiation) and meal frequencies were measured for previously unfed adult painted lady butterflies ( Vanessa cardui L.) fed sucrose solutions or nectar from Lantana camera flowers...