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Titolo:
Metabolic characteristics of muscles in the spiny lobster, Jasus edwardsii, and responses to emersion during simulated live transport
Autore:
Speed, SR; Baldwin, J; Wong, RJ; Wells, RMG;
Indirizzi:
Univ Auckland, Sch Biol Sci, Auckland 1, New Zealand Univ Auckland Auckland New Zealand 1 h Biol Sci, Auckland 1, New Zealand Monash Univ, Dept Sci Biol, Clayton, Vic 3168, Australia Monash Univ Clayton Vic Australia 3168 Biol, Clayton, Vic 3168, Australia Seafood Res Lab Crop & Food Res, Auckland, New Zealand Seafood Res Lab Crop & Food Res Auckland New Zealand kland, New Zealand
Titolo Testata:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY
fascicolo: 3, volume: 128, anno: 2001,
pagine: 435 - 444
SICI:
1096-4959(200103)128:3<435:MCOMIT>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANAEROBIC ENERGY-METABOLISM; YABBY CHERAX-DESTRUCTOR; FRESH-WATER CRAYFISH; OCTOPINE DEHYDROGENASE; DECAPOD CRUSTACEANS; BUFFERING CAPACITY; AIR-EXPOSURE; BEHAVIOR; LACTATE; NUCLEOTIDES;
Keywords:
lobster; emersion; glycolysis; metabolite; ATP; phosphagen;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Wells, RMG Univ Auckland, Sch Biol Sci, Private Bag 92019, Auckland 1, NewZealand Univ Auckland Private Bag 92019 Auckland New Zealand 1 Zealand
Citazione:
S.R. Speed et al., "Metabolic characteristics of muscles in the spiny lobster, Jasus edwardsii, and responses to emersion during simulated live transport", COMP BIOC B, 128(3), 2001, pp. 435-444

Abstract

The metabolic characteristics of five muscle groups in the spiny lobster Jasus edwardsii were examined in order to compare their anaerobic and oxidative capacities. Enzyme activities of phosphorylase, phosphofructokinase, pyruvate kinase, and lactate dehydrogenase were highest in abdominal muscles supporting anaerobic burst activity. Hexokinase, citrate synthase, and HOADactivities in the leg and antennal muscles indicated higher aerobic potential. Arginine kinase activities were high in all muscle groups indicating that muscle phosphagens are an important energy reserve. Arginine phosphate concentrations in 4th periopod and abdominal flexor muscle from lobsters sampled in the field were higher than any values from captive animals, and approximately five times those for ATP. Muscle lactates were high in captive animals. Responses to emersion during simulated live transport appear to exploit the capacity for functional anaerobiosis and further differentiated the muscle groups. Abdominal muscles were especially sensitive and after 24 h showed significant increases in lactate, glucose, ADP, and AMP. ATP levels appeared to be maintained by muscle phosphagens and raised doubts about the efficacy of the adenylate energy charge in evaluating the emersion response. Haemolymph glucose, lactic acid, and ammonia peaked after 24 h emersion and were largely restored following re-immersion. We propose that arginine phosphate concentrations in the 4th periopod are an appropriate index of metabolic stress, and could lead to improved commercial handling protocols. (C) 2001 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 01:38:07