title: Adenylate energy charge, arginine phosphate and ATPase activity in juvenile Homarus americanus during the molt cycle.
abstract: Neither gill nor hepatopancreas exhibited significant differences in Na+, K+-ATPase activity with molt stage. Hepatopancreatic residual ATPase activity was significantly higher (F = 6.273) in post-molt animals; while gill residual ATPase activity exhibited no significant differences. Muscle AEC did not change with molt stage, but levels of ATP (F = 8.050) and ADP (F = 4.130) were significantly higher in premolt (D3 pleopod stage 5.0-5.5) animals; while levels of arginine phosphate (F = 6.981) were significantly higher in post-molt animals. Arginine phosphate/ATP and ATP/ADP ratios were highest in post-molt animals, but were not statistically significant. Although not significant, changes in Na+, K+-ATPase activity and AEC did suggest alterations in: enzyme activity that correlate with known osmotic compensations occurring during the water uptake and hardening/mineralization processes; and energy metabolism which occur during the molt cycle, respectively.
authors.forename: P F
authors.initials: PF
authors.lastname: Dehn
authors.forename: K
authors.initials: K
authors.lastname: Haya
authors.forename: D E
authors.initials: DE
authors.lastname: Aiken
mesh_terms: D000227:Adenine Nucleotides / Q000378:metabolism*; D000244:Adenosine Diphosphate / Q000378:metabolism; D000249:Adenosine Monophosphate / Q000378:metabolism; D000255:Adenosine Triphosphate / Q000378:metabolism; D000375:Aging; D000818:Animals; D001120:Arginine / Q000378:metabolism*; D004734:Energy Metabolism; D005880:Gills / Q000254:growth & development; D008099:Liver / Q000254:growth & development; D024510:Muscle Development; D008121:Nephropidae / Q000254:growth & development* / Q000378:metabolism; D009928:Organ Specificity; D010179:Pancreas / Q000254:growth & development; D000254:Sodium-Potassium-Exchanging ATPase / Q000378:metabolism*
chemical_list: D000227:Adenine Nucleotides; D000249:Adenosine Monophosphate; D000244:Adenosine Diphosphate; D000255:Adenosine Triphosphate; D001120:Arginine; D000254:Sodium-Potassium-Exchanging ATPase