Possible effects of polychlorinated biphenyls on sex determination in rainbow trout

Journal Article · Thu Jan 01 04:00:00 EST 1998 · Environmental Toxicology and Chemistry

DOI:https://doi.org/10.1002/etc.5620170104· OSTI ID:675475

Matta, M B; Cairncross, C ^[1]; Kocan, R M ^[2]

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1. National Oceanic and Atmospheric Administration, Seattle, WA (United States). Coastal Resources Coordination Branch
2. Univ. of Washington, Seattle, WA (United States). School of Fisheries

Aqueous exposure of newly hatched rainbow trout (Oncorhynchus mykiss) larvae to PCBs resulted in altered sex ratios and severe gonadal abnormalities in juvenile females. The proportion of females decreased from 41.9% in combined controls to 31.6 to 36.1% in groups that accumulated 2.5 {micro}g/g PCBs after 3-h immersions, although this decrease was not statistically significant. A total of 18.2% of the females in the treatment group that accumulated 2.1 {micro}g/g PCBs had abnormal gonads as compared to 2.7% in combined controls. Abnormalities were characterized by inconsistent or extremely limited development of oocytes. Although further work is required to validate these results, this study suggests that environmentally realistic tissue concentrations of PCBs may disrupt sexual development in female trout.

• Sponsoring Organization: USDOE
• OSTI ID: 675475
• Journal Information: Environmental Toxicology and Chemistry, Journal Name: Environmental Toxicology and Chemistry Journal Issue: 1 Vol. 17; ISSN 0730-7268; ISSN ETOCDK
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
BIOLOGICAL EFFECTS
CONGENITAL MALFORMATIONS
GONADS
POLYCHLORINATED BIPHENYLS
TROUT
WATER POLLUTION