. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering Fish diseases 923 78° 176° 174° 172° 170° 16B° 166° 164° 162° 160° 158° 156° 154°. 59' 58°-- 57°- 56' 55' 54' 53' 52' 180° 178° Figure 55-6 176° 174° 172° 170° 168° 166° 164 162° 160° 158° 156° The general distribution and frequencies of pollock with pseudobranchial tumors in the Bering Sea. Skin lesions of Pacific cod Two main types of skin lesions were observed on Pacific cod: ulcers (Fig. 55-7) and ring-shaped lesions (Fig. 55-8) (McCain et al. 1979). The ulce
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering Fish diseases 923 78° 176° 174° 172° 170° 16B° 166° 164° 162° 160° 158° 156° 154°. 59' 58°-- 57°- 56' 55' 54' 53' 52' 180° 178° Figure 55-6 176° 174° 172° 170° 168° 166° 164 162° 160° 158° 156° The general distribution and frequencies of pollock with pseudobranchial tumors in the Bering Sea. Skin lesions of Pacific cod Two main types of skin lesions were observed on Pacific cod: ulcers (Fig. 55-7) and ring-shaped lesions (Fig. 55-8) (McCain et al. 1979). The ulcers were roughly circular, ranged from approximately 1 to 50 mm in diameter, and were either pale white or red (hemorrhagic), with a dark pigment concentrated in the margin of the surrounding epidermis. Each affected fish had between 1 and 40 ulcers. The ring-shaped lesions were chairacterized by a cream- colored strip 5-20 mm wide, sometimes with hemor- rhagic foci surrounding a normal-appearing circular. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hood, D. W. (Donald Wilbur), 1918-; Calder, John A; United States. Office of Marine Pollution Assessment; United States. Bureau of Land Management. [Rockville, Md. ?] : U. S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Office of Marine Pollution Assessment ; Seattle, Wash. : Distributed by the University of Washington Press
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