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Polychlorinated biphenyls in a terrestrial predator, the pine marten (Martes martes L.)

A terrestrial predator population, the pine marten ( Martes martes, L.), inhabiting an area in mid‐Sweden was investigated for polychlorinated biphenyls, p,p′‐DDE, lindane, and hexachlorobenzene. The condition of the animals, as shown by intestine fat amounts or fat content of muscle tissue, showed negative relationships with concentration of persistent pollutants. The relationship resulted in a higher concentration of pollutants as intestinal fat amounts or muscle fat content decreased and lower levels of pollutants as these indexes of condition improved. The results indicate that terrestrial predators show changes in pollutant concentration due to condition, caused by food availability and starvation. No differences in pollutant concentration were recorded between males and females and no relationship was found for levels of pollutants and age or reproduction (females). The latter results are in contrast to those found for aquatic predatory mammals.