Dogfish liver and kidney tissue respiration after zinc treatment.

Tissue oxygen consumption in liver and kidney of dogfish Scyliorhinus canicula L. were measured by manometric techniques after two types of zinc treatment: in vitro (1, 15, 60 and 180 ppm) and in vivo (subacute 10 ppm/21 days, and acute 80 ppm/24 hr). All in vitro treatments exert a strong inhibitory effect in both tissues. In vivo treatment affects liver tissue respiration at the acute dose. Subacute treatment shows no effects in both tissues. Results are discussed related to previous data on gill tissue respiration and zinc tissue accumulation in the dogfish.