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Titolo:
Reproduction, gamete supply and larval rearing of New Zealand turbot Colistium nudipinnis (Waite 1910) and brill Colistium guntheri (Hutton 1873): a potential new aquaculture species
Autore:
Tait, MJ; Hickman, RW;
Indirizzi:
NIWA Aquaculture, Wellington, New Zealand NIWA Aquaculture Wellington New Zealand ulture, Wellington, New Zealand
Titolo Testata:
AQUACULTURE RESEARCH
fascicolo: 9, volume: 32, anno: 2001,
pagine: 717 - 725
SICI:
1355-557X(200109)32:9<717:RGSALR>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOLEA-SOLEA L.; DOVER SOLE; GROWTH; BEHAVIOR; SURVIVAL;
Keywords:
turbot; brill; New Zealand; reproduction; GSI; gametes; larval rearing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Hickman, RW NIWA Aquaculture, Mahanga Bay, Wellington, New Zealand NIWA Aquaculture Mahanga Bay Wellington New Zealand Zealand
Citazione:
M.J. Tait e R.W. Hickman, "Reproduction, gamete supply and larval rearing of New Zealand turbot Colistium nudipinnis (Waite 1910) and brill Colistium guntheri (Hutton 1873): a potential new aquaculture species", AQUAC RES, 32(9), 2001, pp. 717-725

Abstract

New Zealand turbot Colistium nndipinnis (Waite 1910) and brill Colistium guntheri (Hutton 1873) were studied to assess their potential for aquaculture development. The reproductive cycle of wild fish showed a long spawning season from winter to summer, during which it is possible to obtain gametes. Both species have a diurnal ovulatory cycle, and gamete collection, by stripping and fertilizing at sea, was most successful within 2-3 h before and after sunset. Male reproductive anatomy suggests that these flatfish spawn in close proximity and that pair formation is highly likely. The eggs of both species have multiple oil droplets, turbot eggs being slightly larger (0.99 mm diameter) with more droplets (18-55) than brill eggs (0.97 mm, 13-26droplets). Hatching occurred approximately 84 h after fertilization at 14 degreesC. Newly hatched turbot averaged 2.2 mm in length, and brill averaged 2.1 mm. First feeding began 4 days post-hatch (DPH). During larval rearing, rotifers were replaced by Artemia nauplii at 10 DPH. Metamorphosis commenced at 12-15 DPH and was completed and the larvae settled by 45 DPH. Weaning to inert foods began at 20-22 DPH (50 mg weight) and was completed by 57DPH. Survival of turbot was 22.8% from fertilized egg to hatching, 7.3% through incubation to 22 DPH and 2.1% through incubation to fully weaned juveniles. Weaning success for turbot from metamorphosis to 57 DPH was 31.5%.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 18:42:57