Prevalence of idiopathic liver lesions in English sole and epidermal abnormalities in flatfish from Vancouver Harbour, British Columbia, 1986 / by D. Goyette, D. Brand, M. Thomas. : En40-240-1/87-09E-PDF

"Histopathological conditions in a number of demersal fish species have been previously linked (by association) with exposure to xenobiotic chemicals found in sediments and the water column. Since Vancouver Harbour receives a variety of urban and industrial waste discharges which potentially can contain toxic and carcinogenic chemicals, English sole (Parophrys vetulus) were collected from seven locations within the harbour in 1986 and examined for liver tissue abnormalities. High prevalences (58.8%) of idiopathic liver lesions were found in English sole from Port Moody Arm, an area receiving petroleum refinery waste water and other pollutants; moderate frequencies (20.0 to 30.0%) along the shoreline of the main harbour and lower frequencies (8.3%-13.3%) in the central and outer portions. The type and frequency of idiopathic liver lesions in English sole can provide useful measurements on the effects of anthropogenic chemical exposure in Vancouver Harbour, and comparison with other coastal harbours. In addition, over 10,000 flatfish representing sixteen species were examined for epidermal abnormalities from May 1985 to September 1986"--Abstract, page ii.

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