Open AccessL‐LACTIC ACID ACCUMULATION DURING ACTIVITY STRESS IN Macrobrachium rosenbergii AND Penaeus duorarum
Author(s) -
Spotts Daniel G.,
Lutz Peter L.
Publication year - 1981
Publication title -
journal of the world mariculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0735-0147
DOI - 10.1111/j.1749-7345.1981.tb00299.x
Subject(s) - macrobrachium rosenbergii , penaeus , lactic acid , biology , shrimp , decapoda , aquaculture , food science , zoology , anaerobic exercise , lactic acidosis , fishery , crustacean , biochemistry , bacteria , fish <actinopterygii> , prawn , physiology , genetics
Energy demand during the stress of activity and handling of aquaculture animals often induces anaerobic metabolism causing lactic acidosis. Although noted in fish and some crustaceans the extent, or rate of lactic acid accumulation in commercial species of shrimp and prawns during exercise is unknown. Whole body lactic acid concentrations in resting and exhausted Macrobrachium rosenbergii and Penaeus duorarum were obtained after immersion in liquid nitrogen. Lactic acid increased sixfold from 0.091 ± .015 mg lactic acid/g body weight to 0.610 ± 0.045 mg/g after an average of 1.4 minutes of activity in M. rosenbergii. Similarly, concentrations increased over five‐fold from 0.121 ± 0.040 mg/g to 0.630 ± 0.250 mg/g after an average of 0.9 minutes in P. duorarum. The implications of these large and rapid accumulations of lactic acid following handling stress are discussed with reference to disease and mortality as well as product quality.