. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering Fish diseases 921 TABLE 55-2 Prevalence of the major pathological conditions of fish in the Bering Sea. No. No. and % Species Condition examined affected Pacific cod Pseudobranchial 4,654 403 Gadus tumor macrocephalus Skin ulcer 4,654 73 Walleye pollock Pseudobranchial 9,173 156 Theragra tumor chalcogramma Rock sole Epidermal 6,440 87 Lepidopsetta tumor bilineata Yellowfin sole Lymphocystis 8,036 228 Limanda aspera marine fish tumors, and they
. The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder. Oceanography Bering Fish diseases 921 TABLE 55-2 Prevalence of the major pathological conditions of fish in the Bering Sea. No. No. and % Species Condition examined affected Pacific cod Pseudobranchial 4,654 403 Gadus tumor macrocephalus Skin ulcer 4,654 73 Walleye pollock Pseudobranchial 9,173 156 Theragra tumor chalcogramma Rock sole Epidermal 6,440 87 Lepidopsetta tumor bilineata Yellowfin sole Lymphocystis 8,036 228 Limanda aspera marine fish tumors, and they will be discussed later. In one cod with bilateral tumors, another similar tumor was also found attached to a gill filament. This tumor was oval, cream-colored, and about 4 mm in diameter (Fig. 55-3). The tumors had a similar cellular organization, composed mainly of X-cells (Alpers et al. 1977b), but no pseudobranchial tissue was associated with the smaller gill tumor. In the Bering Sea, percent of the cod that were examined had pseudobranchial tumors (Table 55-2).. "-a-. 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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