Residues of lindane and its metabolites in eggs, chicks, and body tissues of hen pheasants after ingestion of lindane‐¹⁴ C via treated wheat seed or gelatin capsules¹

Contribution No. 844 C.B.R.I., and 581 Canada Agriculture Research Station, Saskatoon.

Abstract

Studies were carried out to investigate possible contamination of pheasants with residues of lindane used as seed dressings for the control of wireworms in cereal crops. One group of laying hen pheasants was fed 20 mg of lindane‐¹⁴ C in gelatin capsules while another group was fed wheat seed treated with 100 ppm of lindane‐¹⁴ C for 15 days. Residues in eggs were monitored for about 70 days.

Residues in chicks hatched from the eggs were also measured. Concentrations of residues in muscle, liver, brain, and fatty tissues were determined at various times. ¹⁴C‐labeled residues in eggs increased sharply in the capsule treated group and reached an average maximum of about 19 ppm in 8 days. This level decreased to less than 0.5 ppm in about 50 days. Residues in eggs from the pheasants fed treated seed increased gradually to an average maximum of 17 ppm 22 days after commencement of the feeding program. This level, decreased to less than 0.5 ppm 50 days later. Residues in hatched chicks were significantly lower than those in the eggs. Highest concentrations of residues were found in fatty tissues which decreased to non‐detectable level in 6 months. Several chlorobenzene metabolites were identified in egg yolk and chick tissues. Chlorophenolic metabolites were indicated only in chicks.

Key Words:

• Lindane‐¹⁴ C
• metabolism
• residues
• metabolites
• γ‐PCCH
• pentachlorobenzene
• tetrachlorobenzenes
• trichlorobenzenes
• pheasants
• eggs
• seed‐treatment

Notes

Contribution No. 844 C.B.R.I., and 581 Canada Agriculture Research Station, Saskatoon.