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- W1912536325 abstract "I address questions raised by an observation of a Black-throated Blue Warbler ( Setophaga caerulescens ) eating un- refined granulated cane sugar in Kingston, Jamaica. Sugar consumption implies the presence of taste receptors sensitive to sucrose and digestive sucrase activity sufficient to assimilate highly concentrated sucrose solutions. The ability to efficiently di- gest disaccharides, such as sucrose, and more complex oligosaccharides has permitted wood warblers and other nine-primaried oscines to exploit nectars of hummingbird-pollinated flowers and homopteran honeydew that may not be easily digested by avian clades such as thrushes and mimids that appear to lack digestive sucrases. In a broader context, clade-specific differences in digestive physiology may result in resource use patterns in birds that mimic the outcome of interspecific competition. Cuestiones planteadas por el consumo de azucar de cana por Setophaga caerulescens —Aqui abordo preguntas surgidas por la observacion de Setophaga caerulescens alimentandose de azucar de cana granulada y sin refinar en Kingston, Jamaica. El consumo de azucar implica la presencia de receptores de gusto sensibles a la sacarosa asi como suficiente actividad digestiva de sacarasa para asimilar soluciones altamente concentradas de sacarosa. La habilidad para digerir eficientemente los discaridos, tales como la sacarosa, y oligosacaridos mas complejos ha permitido a los parulidos y otros oscines con nueve primarias aprovechar nectares de flores polinizadas por colibries y la melaza producida por homopteros que pueden no ser facil- mente digeridos por clados de aves como turdidos y mimidos que carecen de sacarasas digestivas. En un contexto mas amplio, las diferencias clado-especificas en la fisiologia digestiva pueden resultar en patrones de uso de recursos en aves que imiten el resultado de la competencia interespecifica. Questions soulevees par la consommation de sucre de canne par une Paruline bleue ( Setophaga caerulescens )—Sont traitees ici les questions soulevees par l’observation d’une Paruline bleue ( Setophaga caerulescens ) se nourrissant de sucre de canne cristallise non raffine a Kingston, en Jamaique. La consommation de sucre implique la presence de recepteurs du gout sensibles au saccharose, et d’une activite de digestion par la sucrase suffisante pour assimiler des solutions tres concentrees en saccharose. La capacite a digerer efficacement les disaccharides tels que le saccharose, et les oligosaccharides plus complexes, a permis aux parulines et autres especes du groupe des oscines pourvues de 9 remiges primaires d’exploiter le nectar des fleurs pollinisees par les colibris et le miellat des homopteres, qui ne peuvent pas etre facilement digeres par les clades tels que les grives et les mimides qui semblent manquer de sucrases digestives. Dans un contexte plus large, les differences specifiques des clades dans la physiologie digestive peuvent aboutir a des modeles d’utilisation des ressources par l’avifaune qui imitent les resultats de la competition interspecifique." @default.
- W1912536325 created "2016-06-24" @default.
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- W1912536325 date "2014-12-26" @default.
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- W1912536325 title "Questions raised by the consumption of cane sugar by a Black-throated Blue Warbler ( Setophaga caerulescens )" @default.
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