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Mercury dynamics in young Common Tern (Sterna hirundo) chicks from a polluted environment

✍ Scribed by Peter H. Becker; Robert W. Furness; Diana Henning

Book ID
104625281
Publisher
Springer
Year
1993
Tongue
English
Weight
402 KB
Volume
2
Category
Article
ISSN
0963-9292

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✦ Synopsis

We studied mercury concentrations and amounts in tissues of 19 starved young Common Tern chicks (median age 4 days) and in eggs from the same colony. Concentrations and burden were similar between eggs and newly hatched chicks. Mercury concentrations were highest in down, which contained at least 38% of the body mercury. The mercury burden of the whole body and of the tissues as well as the concentration in down increased with age and body mass, indicating the importance of down as an elimination pathway. Conversion ratios between mercury concentrations in tissues and the whole chick body varied according to the contamination level.

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## Abstract Effects of PCBs weres studied in common terns (__Sterna hirundo__). Hatchlings from eggs collected from Dutch breeding colonies and incubated artificially were raised to an age of 21 d. The birds were fed fish spiked with PCB 126 alone or in combination with PCB 153 (1:1,000), resulting