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Title: Gross Anatomy of the Digestive Tract of the Hawaiian Monk Seal, Monachus schauinslandi 
Author: Goodman-Lowe, Gwen D.; Atkinson, Shannon; Carpenter, James R.
Date: 2001-10
Publisher: University of Hawai'i Press
Citation: Goodman-Lowe GD, Atkinson S, Carpenter JR. 2001. Gross anatomy of the digestive tract of the Hawaiian monk seal, Monachus schauinslandi. Pac Sci 55(4): 399-407.
Abstract: The digestive tract of a female juvenile Hawaiian monk seal was dissected
and described. Intestine lengths were measured for a total of 19 seals
ranging in age from 1 day old to over 10 yr old. Small intestine (SI) lengths
were measured for 10 seals and ranged from 7.1 to 16.2 m; mean SI to standard
ventral length (SVL) ratio was 7.1 ± 0.9 m. Large intestine (LI) lengths
were measured for 11 seals and ranged from 0.4 to 1.2 m; mean LI: SVL was
0.5 ± 0.1 m. Total intestine (TI) lengths were measured for 18 seals and
ranged from 7.5 to 18.4 m; total intestine length to SL ratio was 7.9 ± 1.3 m.
SI and LI lengths both exhibited a linear relationship relative to SVL, whereas
stomach weight: SVL showed an exponential relationship. TI: SVL was significantly
smaller than ratios determined for harbor, harp, and northern elephant
seals, but was not significantly different from those of crabeater, leopard, and
Ross seals. No correlation was seen between gut length and body length for
seven species of seals, including the Hawaiian monk seal.
ISSN: 0030-8870

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