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Sex differences in ionoregulatory responses to dietary oil exposure in polar cod
Author(s) -
Christiansen J. S.
Publication year - 2000
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2000.tb02253.x
Subject(s) - ingestion , biology , fish oil , pollutant , cod liver oil , fish <actinopterygii> , chloride , endocrinology , toxicology , physiology , ecology , fishery , food science , chemistry , organic chemistry
Serum osmolalities and chloride concentrations were examined in polar cod. When exposed to oil male and female fish responded differently. Ingestion of food contaminated with oil led to a significant decrease in osmolality (from 503 to 492 mOsm kg − 1) in males. There was no significant effect of oil ingestion on serum osmolality in females, but chloride concentrations were increased (from 196 to 203 mmol kg − 1). Gender related responses should, therefore, be considered when assessing the possible effects of environmental pollutants on fish physiology.