The role of the blood in the temperature dependence of oxidative metabolism in decapod crustaceans. II. Interspecific adaptations to latitudinal changes

✍ Scribed by Mauro, Nicholas A. ;Mangum, Charlotte P.

• Publisher: John Wiley and Sons
• Year: 1982
• Tongue: English
• Weight: 514 KB
• Volume: 219
• Category: Article
• ISSN: 0022-104X
• DOI: 10.1002/jez.1402190208

✦ Synopsis

The effects of acclimation temperature on hemocyanin-oxygen (HcO,) transport were examined in two species of decapod crustaceans representing different geographic and thermal ranges. In the coldwater species Cancer borealis and the warmwater species Menippe mercenan'a, the performance of the HcO, transport system is maximized at 15 "C, a summer temperature in the northern habitat and a winter temperature in the southern habitat. In C. borealis little unloading at the tissues occurs at 5 "C, and in M. mercenan'a oxygenation at the gill is incomplete at 25 "C. The temperature coefficients describing rates of ventilation, heartbeat, and total oxidative metabolism fall within a narrow range N.A. Mauro's present address is Department of Biology, Hartwick College, Oneonta. N.Y. 13R20.