TitleANTIQUITY OF THE CHORDATE PATTERN OF EXERCISE METABOLISM
Publication TypeJournal Article
Year of Publication1990
AuthorsRuben, J, Parrish, JK
JournalPaleobiology
Volume16
Pagination355-359
Type of ArticleJournal Article
ISSN0094-8373
Abstract

Vertebrates and cephalochondates generate significant quantities of lactic acid during intense exercise. This is associated with heavy reliance on anaerobic metabolism for intramuscular ATP formation. We report here exercise-related generation of lactate in the appendicularian Oikopleura longicauda (Tunicata: Appendicularia) and in the brittle star Ophioderma panamensis (Echinodermata: Ophiuroidea). The chordate-wide distribution of this pattern of activity metabolism suggest its presence in Early Paleozoic prochordates. The presence of the chordate pattern activity physiology in Ophioderma suggests that very early (Ediacarian?) deuterostomes may also have generated lactate during intense exercise. Further investigation of activity physiology in other echinoderms is warranted.

URL<Go to ISI>://WOS:A1990EP44400008