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Titolo:
Low-temperature preservation (at 4 degrees C) of marine rotifer Brachionus
Autore:
Assavaaree, M; Hagiwara, A; Ide, K; Maruyama, K; Lubzens, E;
Indirizzi:
Nagasaki Univ, Fac Fisheries, Nagasaki 852, Japan Nagasaki Univ NagasakiJapan 852 niv, Fac Fisheries, Nagasaki 852, Japan Nagasaki Univ, Grad Sch Marine Sci & Engn, Nagasaki 852, Japan Nagasaki Univ Nagasaki Japan 852 Marine Sci & Engn, Nagasaki 852, Japan Japan Sea Farming Assoc, Goto Stn, Nagasaki, Japan Japan Sea Farming Assoc Nagasaki Japan Assoc, Goto Stn, Nagasaki, Japan Natl Inst Oceanog, Israel Oceanog & Limnol Res, IL-31080 Haifa, Israel Natl Inst Oceanog Haifa Israel IL-31080 mnol Res, IL-31080 Haifa, Israel
Titolo Testata:
AQUACULTURE RESEARCH
fascicolo: 1, volume: 32, anno: 2001,
pagine: 29 - 39
SICI:
1355-557X(200101)32:1<29:LP(4DC>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLICATILIS MULLER,O.F.; S-TYPE; AQUACULTURE; SURVIVAL; CULTURE; STRAINS; JAPAN; FOOD; FISH;
Keywords:
Rotifera; Brachionus plicatilis; Brachionus rotundiformis; low temperature acclimation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Hagiwara, A Nagasaki Univ, Fac Fisheries, 1-14 Bunkyo Machi, Nagasaki 852,Japan Nagasaki Univ 1-14 Bunkyo Machi Nagasaki Japan 852 852, Japan
Citazione:
M. Assavaaree et al., "Low-temperature preservation (at 4 degrees C) of marine rotifer Brachionus", AQUAC RES, 32(1), 2001, pp. 29-39

Abstract

Mass production of rotifers is essential as live food during the larval rearing season. but a major problem of rotifer culture is unpredictable culture collapse, If mass-produced rotifers could be kept alive at low temperature for an extended period of time. they could be supplied as live food to cultured marine fish larvae without interruption, Four experiments were performed to test this possibility in six strains of Brachionus plicatilis O, F, Muller and eight strains of Brachionus rotundiformis Tschugunoff. The results showed that: (1) B. rotundiformis strains were less tolerant to 4 degreesC than B, plicatilis strains. Among the B. rotundiformis strains. the strains known as SS type were the most susceptible and showed the lowest survival. (2) Exchange of culture media during the incubation at 4 degreesC in B, plicatilis and B. rotundiformis resulted in higher survival than not changing the culture media. but there were no differences in the regression slope with or without changing the culture media. (3) Acclimation at 15 degreesC for 96 h for B, plicatilis and B, rotundiformis before transfer to 4 degreesC resulted in higher survival rates than acclimation at 10 degreesC, (4) The combination of frequent exchange of culture media and acclimation significantly improved the survival of B. plicatilis and B, rotundiformis compared with controls that were maintained at 4 degreesC without exchange of the culture media. Large-scale trials using B, plicatilis (Kamiura strain) cultured in 30-L tanks were conducted in a hatchery at a density of 2000-20000 individuals mL(-1). Rotifers were transferred directly from 25 degreesC to 4 degreesC, About 50% of the rotifers at 20 000 individuals mL(-1) survived after 14 days at 4 degreesC. These preserved rotifers could be cultured at 20 degreesC. recovering within 4 days.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 23:48:30