Morphology of the abdominal wall in the bat, Pteronotus parnellii (Microchiroptera: Mormoopidae): Implications for biosonar vocalization
✍ Scribed by Winston C. Lancaster; O. W. Henson Jr.
- Book ID
- 102903542
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 784 KB
- Volume
- 223
- Category
- Article
- ISSN
- 0362-2525
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✦ Synopsis
We investigated the structure of the abdominal wall of Pteronotusparnellii and made comparisons with eight other species of Microchiroptera and one megachiropteran. Similar to other mammals, the abdominal wall of bats consists of the three flank muscles laterally and the m. rectus abdominis ventrally. In Microchiroptera, flank muscles are mostly confined to dorsal portions of the wall. The mm. transversus abdominis and obliquus internus abdominis form the bulk of the wall; the m. obliquus externus is poorly developed. Ventrolaterally, a large portion of the wall is a dense, bilaminar aponeurosis, composed of collagen, elastin, and fibroblasts. The thicker, superficial lamina derives from the mm. obliquus internus and transversus abdominis. The deep lamina is a continuation of the transversalis fascia. Collagen fibers of the two fused laminae are oriented orthogonally, resulting in a resilient, composite fabric. Fascicles of the flank muscles are oriented along the Address reprint requests to O.