| 释义 |
Definition of barbule in English: barbulenoun ˈbɑːbjuːlˈbɑrbjul A minute filament projecting from the barb of a feather. 羽支 Example sentencesExamples - Accordingly, even though birds without uropygial glands preened at the same rate as birds with glands, the former may have suffered more breakage of feather barbules.
- Downy barbs that were initially sampled from the base of these feathers had microscopic characters that consisted of very long barbules.
- The barbs, in turn, may bear barbules which may hook on to the barbules of an adjoining barb.
- Well known examples include the structural colors produced by brilliant iridescent butterfly wing scales and avian feather barbules, such as the peacocks tail.
- The vanes have parallel barbs, which suggests the presence of barbules.
- In contrast, a flight feather has narrow barbules which do not cover the barbs.
- Increased plumage abrasion caused by a higher rate of preening could break feather barbules, leading to a reduction in plumage condition.
- Well defined, functional barbules are absent.
- Modern feathers evolved through the stages involving elongated scales that became broken up into barbs and barbules.
- I think they would have barbules without projections.
- The interlocking hooks and barbules allow the feather to be ‘reset’ by the bird's preening action.
- But scales are folds in skin; feathers are complex structures with a barb, barbules and hooks.
- Feathers, however bizarre or morphologically complex, consist essentially of a rachis, barbs, and barbules.
- A few species of hummingbirds and European Starling are known to produce UV hues with coherently scattering melanin arrays in feather barbules.
- It has been my impression that the mechanism whereby the barb ridges separate from one another and sculpt out the barbules, probably involves many sequential changes.
- Plumage of glandless birds was in significantly poorer condition, with more missing barbules, than the plumage of control birds with glands.
- Bird feathers illustrate optimum design, with their interlocking barbs and barbules resulting in a strong yet extremely light structure.
- The barbules are the tiny feather tip structures that come off of barbs on either side of the central stem of peacock feathers.
- The strongly iridescent colors of bird feathers are produced by arrays of melanin granules in the barbules of feathers.
OriginMid 19th century: from Latin barbula, diminutive of barba 'beard'. Definition of barbule in US English: barbulenounˈbɑrbjulˈbärbyo͞ol A minute filament projecting from the barb of a feather. 羽支 Example sentencesExamples - In contrast, a flight feather has narrow barbules which do not cover the barbs.
- Modern feathers evolved through the stages involving elongated scales that became broken up into barbs and barbules.
- I think they would have barbules without projections.
- Increased plumage abrasion caused by a higher rate of preening could break feather barbules, leading to a reduction in plumage condition.
- The strongly iridescent colors of bird feathers are produced by arrays of melanin granules in the barbules of feathers.
- The barbules are the tiny feather tip structures that come off of barbs on either side of the central stem of peacock feathers.
- Well known examples include the structural colors produced by brilliant iridescent butterfly wing scales and avian feather barbules, such as the peacocks tail.
- But scales are folds in skin; feathers are complex structures with a barb, barbules and hooks.
- The vanes have parallel barbs, which suggests the presence of barbules.
- Well defined, functional barbules are absent.
- Downy barbs that were initially sampled from the base of these feathers had microscopic characters that consisted of very long barbules.
- Feathers, however bizarre or morphologically complex, consist essentially of a rachis, barbs, and barbules.
- It has been my impression that the mechanism whereby the barb ridges separate from one another and sculpt out the barbules, probably involves many sequential changes.
- Accordingly, even though birds without uropygial glands preened at the same rate as birds with glands, the former may have suffered more breakage of feather barbules.
- A few species of hummingbirds and European Starling are known to produce UV hues with coherently scattering melanin arrays in feather barbules.
- Bird feathers illustrate optimum design, with their interlocking barbs and barbules resulting in a strong yet extremely light structure.
- The barbs, in turn, may bear barbules which may hook on to the barbules of an adjoining barb.
- Plumage of glandless birds was in significantly poorer condition, with more missing barbules, than the plumage of control birds with glands.
- The interlocking hooks and barbules allow the feather to be ‘reset’ by the bird's preening action.
OriginMid 19th century: from Latin barbula, diminutive of barba ‘beard’. |