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Titolo:
SEASONAL-CHANGES IN THE BIOCHEMICAL-COMPOSITION AND ENERGY CONTENT OFTHE RED SWAMP CRAYFISH PROCAMBARUS-CLARKII (GIRARD) IN THE LOWER MONDEGO RIVER VALLEY, PORTUGAL
Autore:
FERNANDES MAS; MENDONCA MIR; MARQUES JC; MADEIRA VMC;
Indirizzi:
UNIV COIMBRA,DEPT ZOOL P-3041 COIMBRA PORTUGAL
Titolo Testata:
Journal of crustacean biology
fascicolo: 4, volume: 14, anno: 1994,
pagine: 736 - 743
SICI:
0278-0372(1994)14:4<736:SITBAE>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROTEIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
M.A.S. Fernandes et al., "SEASONAL-CHANGES IN THE BIOCHEMICAL-COMPOSITION AND ENERGY CONTENT OFTHE RED SWAMP CRAYFISH PROCAMBARUS-CLARKII (GIRARD) IN THE LOWER MONDEGO RIVER VALLEY, PORTUGAL", Journal of crustacean biology, 14(4), 1994, pp. 736-743

Abstract

Nucleic acids (DNA and RNA), protein, lipid (triglycerides, phospholipid, and cholesterol), carbohydrate, and caloric contents of soft tissues of Procambarus clarkii were determined at intervals over the year to investigate whether seasonal changes in the biochemical compositionand energy contents of P. clarkii in the lower Mondego River valley, Portugal, depend on nutritional or reproductive cycles. Total lipid, triglycerides, and total caloric contents significantly changed seasonally throughout the year. An increase was observed during the April/June (spring), followed by a decrease during June/October (summer) to levels maintained through the winter period (January/March). Therefore, P. clarkii does not store significant nutritional reserves for use during winter. Furthermore, the seasonal changes of total lipid, triglycerides, and total caloric contents of P. clarkii appear to be associatedwith the reproductive cycle of the species rather than with the nutritional cycle. Seasonal changes in the protein and carbohydrate contents were relatively limited and do not appear to be related to nutritional metabolism. Seasonal changes in the phospholipid, cholesterol, and nucleic acid contents were also observed in parallel with the main reproductive period of the species.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 18:05:43