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Wildlife Toxicology

Study site locations: Massachusetts - Effect of egg order on size and contaminant concentrations

There was no consistent pattern of PCB concentrations across laying order in tree swallows. There could be a large difference in concentration (up to 69%) between adjacently laid eggs. This means that concentrations in a random egg sample will represent the contaminant concentration in the rest of the clutch.

Custer, C.M. , B.R. Gray, and T. W. Custer. 2010.   Effects of egg order on organic and inorganic element concentrations and  egg characteristics in tree swallows, Tachycineta bicolor.  Environmental Toxicology and Chemistry  (In press)

Page Last Modified: April 3, 2018