Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Growth and survival of Arcto-Norwegian and Norwegian coastal cod larvae (Gadus morhua L.) reared together in mesocosms under different light regimes
Autore:
van der Meeren, T; Jorstad, KE;
Indirizzi:
Inst Marine Res, Austevoll Aquaculture Res Stn, N-5392 Storebo, Norway Inst Marine Res Storebo Norway N-5392 re Res Stn, N-5392 Storebo, Norway Dept Aquaculture, Inst Marine Res, N-5817 Bergen, Norway Dept AquacultureBergen Norway N-5817 Marine Res, N-5817 Bergen, Norway
Titolo Testata:
AQUACULTURE RESEARCH
fascicolo: 7, volume: 32, anno: 2001,
pagine: 549 - 563
SICI:
1355-557X(200107)32:7<549:GASOAA>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLOUNDER PARALICHTHYS LETHOSTIGMA; HADDOCK MELANOGRAMMUS-AEGLEFINUS; EASTERN ENGLISH-CHANNEL; SOUTHERN NORTH-SEA; ATLANTIC COD; STRIPED BASS; MORONE-SAXATILIS; DIFFERENT LATITUDES; TEMPERATURE; PHOTOPERIOD;
Keywords:
cod; fish larvae; growth rate; light intensity; photoperiod; stock differences;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
75
Recensione:
Indirizzi per estratti:
Indirizzo: van der Meeren, T Inst Marine Res, Austevoll Aquaculture Res Stn, N-5392 Storebo, Norway Inst Marine Res Storebo Norway N-5392 Storebo, Norway
Citazione:
T. van der Meeren e K.E. Jorstad, "Growth and survival of Arcto-Norwegian and Norwegian coastal cod larvae (Gadus morhua L.) reared together in mesocosms under different light regimes", AQUAC RES, 32(7), 2001, pp. 549-563

Abstract

To evaluate genetic differences in growth and survival potential as a function of light regime, cod larvae from two stocks (CC: coastal cod and AC: Arcto-Norwegian cod, spawning at latitudes of 60 degreesN and 69 degreesN respectively) were co-reared in mesocosms, The experiment was carried out with two artificially illuminated light regimes, corresponding to the natural photoperiod at peak spawning of the respective stocks (CC: 7-8 h distinct dark period, AC: 'mid-night sun' as continuous light with 2-3 h reduced light intensity). One additional regime with ambient natural light analogous to60 degreesN was used. At termination on day 36 post-hatch, larvae of the co-reared stocks were distinguished from each other by a genetic marker in the CC stock. Stock-specific differences in growth rate and survival were indicated, with CC larvae growing and surviving better than AC larvae. This is in agreement with earlier comparisons of larval growth in these stocks. The 69 degreesN light regime did not enhance growth for any of the two stocks. However, natural light greatly increased growth rate of both stocks, indicating important mechanisms in regulation of larval feeding relative to light quality or intensity. The results may be important for choice of stock and illumination in intensive aquaculture of this species.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 10:34:20