TY - JOUR
T1 - Seasonal changes in the metabolism of the calcareous sponge Clathrina clathrus (schmidt)
AU - Burlando, Bruno
AU - Bavestrello, Giorgio
AU - Arillo, Attilio
PY - 1992
Y1 - 1992
N2 - 1. 1. Seasonal variations in the metabolism of the calcareous sponge Clathrina clathrus from the Mediterranean, have been studied for a 27 month period by measuring the oxygen consumption of cell suspensions and by determining protein, sugar, lipid and carotenoid content. 2. 2. Proteins and sugars rise from winter to spring and remain high in summer and autumn, carotenoids are significantly higher in the cold season, lipids show no year variation. 3. 3. The oxygen consumption shows a sharp peak in summer, being otherwise rather constant. 4. 4. Relatively lower Q10 values can be detected in sponges experiencing decreasing seawater temperatures (from September to March). 5. 5. Results suggest the existence in C. clathrus of a year cycle with a hypo-activity period in winter. 6. 6. Biochemical variations seem to be related both to changes in seasonal feeding and to metabolic/ physiological responses caused by cyclic climatic events. 7. 7. However, seasonal variations are low, indicating a certain tendency to maintain biochemical homeostasis.
AB - 1. 1. Seasonal variations in the metabolism of the calcareous sponge Clathrina clathrus from the Mediterranean, have been studied for a 27 month period by measuring the oxygen consumption of cell suspensions and by determining protein, sugar, lipid and carotenoid content. 2. 2. Proteins and sugars rise from winter to spring and remain high in summer and autumn, carotenoids are significantly higher in the cold season, lipids show no year variation. 3. 3. The oxygen consumption shows a sharp peak in summer, being otherwise rather constant. 4. 4. Relatively lower Q10 values can be detected in sponges experiencing decreasing seawater temperatures (from September to March). 5. 5. Results suggest the existence in C. clathrus of a year cycle with a hypo-activity period in winter. 6. 6. Biochemical variations seem to be related both to changes in seasonal feeding and to metabolic/ physiological responses caused by cyclic climatic events. 7. 7. However, seasonal variations are low, indicating a certain tendency to maintain biochemical homeostasis.
UR - http://www.scopus.com/inward/record.url?scp=0026527876&partnerID=8YFLogxK
U2 - 10.1016/0300-9629(92)90543-Y
DO - 10.1016/0300-9629(92)90543-Y
M3 - Article
SN - 0300-9629
VL - 101
SP - 341
EP - 344
JO - Comparative biochemistry and physiology. Part A, Molecular & integrative physiology
JF - Comparative biochemistry and physiology. Part A, Molecular & integrative physiology
IS - 2
ER -