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Titolo:
BIOLOGICAL CHARACTERISTICS OF EUROPEAN ATLANTIC STURGEON, ACIPENSER STURIO, AS THE BASIS FOR A RESTORATION PROGRAM IN FRANCE
Autore:
WILLIOT P; ROCHARD E; CASTELNAUD G; ROUAULT T; BRUN R; LEPAGE M; ELIE P;
Indirizzi:
CEMAGREF,DIV AQUACULTURE & PECHE,BP 3 F-33612 CESTAS FRANCE
Titolo Testata:
Environmental biology of fishes
fascicolo: 1-4, volume: 48, anno: 1997,
pagine: 359 - 372
SICI:
0378-1909(1997)48:1-4<359:BCOEAS>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSMONTANUS RICHARDSON; WHITE STURGEON; LARVAE; FISHES;
Keywords:
POPULATION STRUCTURE; ARTIFICIAL REPRODUCTION; WILD JUVENILE FARMING; ENDANGERED SPECIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
59
Recensione:
Indirizzi per estratti:
Citazione:
P. Williot et al., "BIOLOGICAL CHARACTERISTICS OF EUROPEAN ATLANTIC STURGEON, ACIPENSER STURIO, AS THE BASIS FOR A RESTORATION PROGRAM IN FRANCE", Environmental biology of fishes, 48(1-4), 1997, pp. 359-372

Abstract

The European Atlantic Sturgeon, Acipenser sturio, has received increased attention in France because of population declines due to overfishing and deterioration of spawning grounds. Conservation of this species requires many actions, including publicizing the necessity to protect this fish and its habitats, investigations on catches and probable spawning grounds, and on artificial reproduction, which is still in an experimental stage. During its sea life, European Atlantic sturgeon occur from the Bay of Biscay to the Bristol Channel and North Sea. Presently, the number of young fish in the Gironde Estuary during summertime is low and the population has a unimodal age structure. At the time this paper was written, the last recorded reproduction of sturgeon in the Gironde system occurred in 1988 (new evidence of reproduction was discovered in 1995). Growth of young fish from the 1988 cohort was faster than that previously determined for others cohorts. Over our studyperiod (1980-1994), the availability of wild broodfish declined. Successful artificial reproduction of wild-caught females requires an optimal physiological state; any delay decreases their reproductive potential. Acclimatization of wild-caught juveniles to fresh water was most successful when fish were transported and held upon arrival in low salinity water. For such wild-caught juveniles, the first food intake usually occurs several months after capture, but remains irregular. Thesefindings will be used to improve ongoing efforts to restore A. sturio.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/21 alle ore 02:31:31