Anatomy and histochemistry of spread-wing posture in birds. I. Wing drying posture in the double-crested cormorant, Phalacrocorax auritus

Journal of Morphology
Ron A Meyers

Abstract

Spread-wing postures of birds often have been studied with respect to the function of behavior, but ignored with regard to the mechanism by which the birds accomplish posture. The double-crested cormorant, Phalacrocorax auritus, was used as a model for this study of spread-wing posture. Those muscles capable of positioning and maintaining the wing in extension and protraction were assayed histochemically for the presence of slow (postural) muscle fibers. Within the forelimb of Phalacrocorax, Mm. coracobrachialis cranialis, pectoralis thoracicus (cranial portion), deltoideus minor, triceps scapularis, and extensor metacarpi radialis pars dorsalis and ventralis were found to contain populations of slow-twitch or slow-tonic muscle fibers. These slow fibers in the above muscles are considered to function during spread-wing posture in this species. J Morphol 233:67-76, 1997. © 1997 Wiley-Liss, Inc.

References

Jan 1, 1976·Comparative Biochemistry and Physiology. A, Comparative Physiology·K H Kiessling
Dec 1, 1992·Journal of Applied Physiology·R B ArmstrongE R Weibel
Jun 1, 1992·Journal of Morphology·J W Hermanson, M A Cobb
Jan 1, 1961·The Journal of Biophysical and Biochemical Cytology·A B NOVIKOFFJ DRUCKER

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Citations

Sep 22, 2000·Microscopy Research and Technique·E Bandman, B W Rosser
Dec 7, 2005·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Jennifer MarquezEldon J Braun
Jan 24, 2009·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·Kenneth C Welch, Douglas L Altshuler

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