Morphology of the Extrinsic Gasbladder Musculature

The morphology of extrinsic gasbladder musculature of Sebastes marinus was examined to provide criteria that may be useful in discrimination of the three Northwest Atlantic redfishes, particularly for small individuals. The investigation revealed that S. marinus has a short, wide L-shaped gasbladder...

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Bibliographic Details
Main Authors: In The Golden Redfish, Sebastes Marinus, D. J. Power, L-hsun Ni
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.614.6562
http://journal.nafo.int/j03/power.pdf
Description
Summary:The morphology of extrinsic gasbladder musculature of Sebastes marinus was examined to provide criteria that may be useful in discrimination of the three Northwest Atlantic redfishes, particularly for small individuals. The investigation revealed that S. marinus has a short, wide L-shaped gasbladder muscle which is generally tricipital. The most frequent pattern of tendons extending posteriorly was attachment of dorsal head tendons to ventral rib 2, passage of central head tendons between ribs 2 and 3, and passage of ventral head tendons between ribs 3 and 4. This is significantly different from the long, narrow gasbladder muscle of beaked redfishes, with