spacer gif spacer gif spacer gif spacer gif spacer gif
QUICK SEARCH:   [advanced]


spacer gif
     Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents    

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by TOULMOND, A.
Right arrow Articles by TCHERNIGOVTZEFF, C.
Right arrow Search for Related Content
PubMed
Right arrow Articles by TOULMOND, A.
Right arrow Articles by TCHERNIGOVTZEFF, C.
Journal of Experimental Biology 142,143-153 (1989)
Published by Company of Biologists 1989

Blood Acid-Base Balance in the Lugworm Arenicola Marina Ventilating in Hypo- or Hyperoxic Sea Water

ANDRÉ TOULMOND 1 and CATHERINE TCHERNIGOVTZEFF 1

1 Université Pierre-et-Marie-Curie, Laboratoire de Biologie et Physiologie marines Bâtiment A, 4 place Jussieu, F-75252 Paris Cedex 05, and Station Biologique, Roscoff, France

The time course of variation in blood acid-base balance was examined in lugworms, Arenicola marina (L.), experimentally acclimated for up to 72 h in hypoxic (PO2 = 80 mmHg) (1 mmHg = 133.3 Pa), normoxic (PO2 = 160 mmHg) or hyperoxic (PO2 = 500 mmHg) sea water. In hyperoxic animals, a blood acidosis is entirely compensated 12 h after the beginning of the acclimation. In hypoxic animals, a blood alkalosis develops very quickly, persists and increases, reaching a maximum 72h after the beginning of the acclimation. In both cases, variation in blood acid-base balance is mainly of respiratory origin. These data are consistent with previous results showing that the lugworm hypoventilates in hyperoxic sea water and hyperventilates in hypoxic sea water.

Key words: lugworm, Arenicola marina, ventilation, hyperoxia, hypoxia, blood acid-base balance

Accepted on November 2, 1988






© The Company of Biologists Ltd 1989