Sugar content in nectar flowers of siratro (<em>Macroptilium atropurpureum</em> Urb.)
نویسندگان
چکیده
منابع مشابه
Sugar Metabolism in Hummingbirds and Nectar Bats
Hummingbirds and nectar bats coevolved with the plants they visit to feed on floral nectars rich in sugars. The extremely high metabolic costs imposed by small size and hovering flight in combination with reliance upon sugars as their main source of dietary calories resulted in convergent evolution of a suite of structural and functional traits. These allow high rates of aerobic energy metaboli...
متن کاملDynamic nectar replenishment in flowers of Penstemon (Scrophulariaceae).
Plants that experience variation in pollinator visitation rates or fluctuations in weather conditions may be expected to have evolved homeostatic mechanisms that regulate their nectar offerings, thereby providing a more constant reward to the pollinators. A limited degree of such nectar homeostasis is reported here for Penstemon. First, nectar removal stimulates replenishment: when nectar was r...
متن کاملNectar yeasts warm the flowers of a winter-blooming plant.
Yeasts are ubiquitous in terrestrial and aquatic microbiota, yet their ecological functionality remains relatively unexplored in comparison with other micro-organisms. This paper formulates and tests the novel hypothesis that heat produced by the sugar catabolism of yeast populations inhabiting floral nectar can increase the temperature of floral nectar and, more generally, modify the within-fl...
متن کاملNectar Availability and Parasitoid Sugar Feeding
Habitat diversification can potentially benefit natural enemies by providing alternative prey, a suitable microclimate, or nectar and pollen (Landis et al., 2000). Laboratory and field cage studies demonstrate that parasitoids with access to sugar have greater longevity, fecundity, and more femalebiased sex ratios than starved parasitoids (Idris and Grafius, 1995; Dyer and Landis, 1996; Berndt ...
متن کاملFinding flowers in the dark: nectar-feeding bats integrate olfaction and echolocation while foraging for nectar
Nectar-feeding bats depend mainly on floral nectar to fulfil their energetic requirements. Chiropterophilous flowers generally present strong floral scents and provide conspicuous acoustic echoes to attract bats. While floral scents are assumed to attract bats over long distances, acoustic properties of flower structures may provide detailed information, thus supporting the localization of a fl...
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ژورنال
عنوان ژورنال: Acta Scientiarum. Animal Sciences
سال: 2005
ISSN: 1807-8672,1806-2636
DOI: 10.4025/actascianimsci.v27i1.1248