[Circadian variations in hemolymph lipids and lipoproteins and in hepatopancreatic lipids of the shrimp Penaeus japonicus].
Lipids content of the haemolymph and the hepatopancreas in the decapod Crustacean P. japonicus exhibits a bicircadian rhythm characterized by one maximum in the night and another one during the day. The maximal values in the haemolymph are approximately two and a half times greater (8 mg/ml) than minimal ones (3 mg/ml). Variations are less important in the hepatopancreas. A bicircadian rhythm of lipid classes in the haemolymph is observed very significantly in concentration of polar lipids and free sterols with maximal values (6.87 mg/ml and 0.59 mg/ml) and minimal values (2.63 mg/ml and 0.23 mg/ml) respectively. Polar lipids are the major lipid fractions in the haemolymph (87%). The electrophoretic behaviour of haemolymph lipoproteins is determined.
Vazquez-Boucard
C
C
Centre d'Océanologie de Marseille, CNRS UA 41, France.
Galois
R
R
Ceccaldi
H J
HJ
D000818:Animals; D002940:Circadian Rhythm; D006458:Hemolymph / Q000378:metabolism; D050356:Lipid Metabolism; D008074:Lipoproteins / Q000378:metabolism*; D008099:Liver / Q000378:metabolism; D010179:Pancreas / Q000378:metabolism; D033561:Penaeidae / Q000378:metabolism*
D008074:Lipoproteins
Variations circadiennes des lipides et lipoprotéines de l'hémolymphe, et des lipides de l'hépatopancréas, chez la crevette Penaeus japonicus.