Seasonal and interannual variation in the energetic condition of adult male Atlantic sharpnose shark Rhizoprionodon terraenovae in the northern Gulf of Mexico

One hundred and thirty Atlantic sharpnose shark Rhizoprionodon terraenovae livers were collected from April 1999 to October 2001 from inshore waters of the Mississippi Sound to investigate seasonal and inter‐annual variation in their energetic condition. A decline in the hepato‐somatic index (IH) wa...

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Bibliographic Details
Published in:Journal of fish biology 2006-02, Vol.68 (2), p.645-653
Main Authors: Hoffmayer, E. R., Parsons, G. R., Horton, J.
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Biological and medical sciences
elasmobranch
Fundamental and applied biological sciences. Psychology
hepato-somatic index
liver specific energy content
Marine
Rhizoprionodon terraenovae
total energy content
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
water content
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Summary:One hundred and thirty Atlantic sharpnose shark Rhizoprionodon terraenovae livers were collected from April 1999 to October 2001 from inshore waters of the Mississippi Sound to investigate seasonal and inter‐annual variation in their energetic condition. A decline in the hepato‐somatic index (IH) was observed from 1999 to 2001. In addition, IH, liver specific energy content and total energy content were lowest during the summer and highest during the spring and autumn, while liver water content was highest during the summer and lowest during the spring and autumn.
ISSN:0022-1112
1095-8649
DOI:10.1111/j.0022-1112.2006.00942.x