title: Diurnal rhythms in the synthesis and release of haemolymph proteins in the crustacean Isopoda, Porcellio dilatatus (Brandt), with special reference to vitellogenin.
abstract: Synthesis and release of vitellogenin in the crustacean Isopoda, Porcellio dilatatus, were maximal during premolt. At that time, diurnal variations occurred in the haemolymph protein level and in the synthesis and release of vitellogenin and other proteins in the haemolymph. The pattern of variations was always identical and bimodal: the minima were at dusk and at dawn when the maxima occurred in the middle of the day and of the night. These variations were highly significant, and the diurnal means were significantly higher than the nocturnal means.
mesh_terms: D000818:Animals; D001798:Blood Proteins / Q000032:analysis / Q000096:biosynthesis*; D002940:Circadian Rhythm; D003445:Crustacea / Q000378:metabolism*; D005260:Female; D006458:Hemolymph / Q000378:metabolism*; D008074:Lipoproteins / Q000096:biosynthesis*; D014819:Vitellogenins / Q000096:biosynthesis* / Q000097:blood
chemical_list: D001798:Blood Proteins; D008074:Lipoproteins; D014819:Vitellogenins