Search Results - "Nicolson, S W"

Economic and ecological implications of geographic bias in pollinator ecology in the light of pollinator declines by Archer, C. R., Pirk, C. W. W., Carvalheiro, L. G., Nicolson, S. W.

“…Understanding the causes and consequences of pollinator declines is a priority in ecological research. However, across much of the globe we have a poor…”
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Nectar as food for birds: the physiological consequences of drinking dilute sugar solutions by Nicolson, S. W, Fleming, P. A

“…Nectarivory has evolved many times in birds: although best known in hummingbirds, sunbirds and honeyeaters, it also occurs on an opportunistic basis in a…”
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Detoxification and elimination of nicotine by nectar-feeding birds by Lerch-Henning, S., Du Rand, E. E., Nicolson, S. W.

“…Many dilute nectars consumed by bird pollinators contain secondary metabolites, potentially toxic chemicals produced by plants as defences against herbivores…”
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Patterns of Host Use in Two African Mistletoes: The Importance of Mistletoe-Host Compatibility and Avian Disperser Behaviour by Roxburgh, L., Nicolson, S. W.

“…1. Mistletoe infection prevalence typically differs between host tree species. Differences in infection prevalence between hosts are probably the product of…”
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Nectar concentration affects sugar preferences in two Australian honeyeaters and a lorikeet by Fleming, P. A., Xie, S., Napier, K., McWhorter, T. J., Nicolson, S. W.

“…1. Understanding avian diet preferences reveals a great deal about the birds' digestive physiology and relationships with food plants, and can make a valuable…”
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Concentration and Temperature Effects on Sugar Intake and Preferences in a Sunbird and a Hummingbird by Fleming, P. A., Bakken, B. Hartman, Lotz, C. N., Nicolson, S. W.

“…1. The nectars of hummingbird- and passerine-pollinated plants differ in both sugar type and concentration. Firstly, hummingbird nectars tend to be more…”
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Energy Balance in the Whitebellied Sunbird Nectarinia talatala: Constraints on Compensatory Feeding, and Consumption of Supplementary Water by Nicolson, S. W., Fleming, P. A.

“…1. Avian nectarivores consume a simple food which is generally dilute, but may vary widely in concentration and thus in water content. 2. Energy intake over 24…”
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Honeybee (Apis cerana) Foraging Responses to the Toxic Honey of Tripterygium hypoglaucum (Celastraceae): Changing Threshold of Nectar Acceptability by Tan, K, Guo, Y. H, Nicolson, S. W, Radloff, S. E, Song, Q. S, Hepburn, H. R

“…To investigate honeybee foraging responses to toxic nectar, honey was collected from Apis cerana colonies in the Yaoan county of Yunnan Province, China, during…”
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Nectar concentration preferences and sugar intake in the white-bellied sunbird, Cinnyris talatala (Nectariniidae) by Leseigneur, C. D. C, Nicolson, S. W

“…Plant nectar is a simple food consumed by many different animals. Preferences regarding its components, especially sugars, have been studied for many species,…”
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Osmoregulation in an avian nectarivore, the whitebellied sunbird Nectarinia talatala: response to extremes of diet concentration by Fleming, P A, Nicolson, S W

“…Water intake of nectarivores is intrinsically linked to nectar concentration. Osmoregulation in whitebellied sunbirds Nectarinia talatala (body mass 9.3+/-0.1…”
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Changes in nectar concentration: how quickly do whitebellied sunbirds (Cinnyris talatala) adjust feeding patterns and food intake by Köhler, A, Verburgt, L, Fleming, P. A, Nicolson, S. W

“…Nectarivorous birds encounter varying nectar concentrations while foraging on different food plants and must adjust their consumption to maintain constant…”
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How Important Is the Relationship between Protea humiflora (Proteaceae) and Its Non-Flying Mammal Pollinators? by Fleming, P. A., Nicolson, S. W.

“…The interaction between Protea humiflora and its non-flying mammal pollinators was investigated with the aim of quantifying the relationship for both the…”
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Short-term energy regulation of whitebellied sunbirds (Nectarinia talatala): effects of food concentration on feeding frequency and duration by Köhler, A, Verburgt, L, Nicolson, S W

“…Avian nectarivores show compensatory feeding by adjusting their volumetric intake in response to variation in nectar concentration. This study used an infrared…”
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Antagonistic control of fluid secretion by the Malpighian tubules of Tenebrio molitor: effects of diuretic and antidiuretic peptides and their second messengers by Wiehart, U I M, Nicolson, S W, Eigenheer, R A, Schooley, D A

“…Fluid secretion by insect Malpighian tubules is controlled by haemolymph-borne factors. The mealworm Tenebrio molitor provides the first known example of…”
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Effects of nicotine on the digestive performance of nectar-feeding birds reflect their relative tolerance to this alkaloid by Lerch-Henning, S, Nicolson, S W

“…The paradox of secondary metabolites, toxic defence compounds produced by plants, in nectar and fruits is well known. Deterrence of feeding by nectarivorous…”
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Short-Term Energy Regulation in Nectar-Feeding Birds: The Response of Whitebellied Sunbirds (Nectarinia talatala) to a Midday Fast by Nicolson, S. W., Hoffmann, D., Fleming, P. A.

“…1. Small nectar-feeding birds have high energy turnover and must respond rapidly to changes in food concentration or feeding opportunities. A previous study…”
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Digestion of maize and sunflower pollen by the spotted maize beetle Astylus atromaculatus (Melyridae): is there a role for osmotic shock? by Human, H, Nicolson, S.W

“…We investigated the mechanism and efficiency of digestion of two types of pollen, maize, Zea mays, and sunflower, Helianthus annuus, by the spotted maize…”
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Whitebellied sunbirds (Nectarinia talatala, Nectariniidae) do not prefer artificial nectar containing amino acids by Leseigneur, C. D. C, Verburgt, L, Nicolson, S. W

“…Amino acids are the most abundant class of compounds in nectar after sugars. Like its sugar concentration, the amino acid concentration of nectar has been…”
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K(+) transport in Malpighian tubules of Tenebrio molitor L: a study of electrochemical gradients and basal K(+) uptake mechanisms by Wiehart, U I M, Nicolson, S W, Van Kerkhove, E

“…Malpighian tubules of the mealworm Tenebrio molitor were isolated for intracellular measurement of basolateral (V(bl)) and, indirectly, apical (V(ap)) membrane…”
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The effect of different oral antibiotics on the gastrointestinal microflora of a wild rodent ( Aethomys namaquensis) by Johnson, S.A., Nicolson, S.W., Jackson, S.

“…Gut sterilization via the oral administration of antibiotics facilitates physiological studies of the nutritionally important relationship between intestinal…”
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