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You searched for: Journal Aquaculture Remove constraint Journal: Aquaculture Publication Year 2003 Remove constraint Publication Year: 2003 Source 2003 v.221 no.1-4 Remove constraint Source: 2003 v.221 no.1-4
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1. Advanced nursing of mixed-sex and mono-sex tilapia (Oreochromis niloticus) fry, and its impact on subsequent growth in fertilized ponds

Author:
Little, D.C.; Bhujel, R.C.; Pham, T.A.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 265-276
ISSN:
0044-8486
Subject:
Oreochromis niloticus; tilapia (common name); fish fry; males; females; liveweight gain; animal growth; fish culture; fish ponds; fingerlings; mortality
Abstract:
... A 168-day grow-out trial was conducted using mono-sex and mixed-sex tilapia (Oreochromis niloticus) fries nursed for 2, 4 or 6 months to investigate the comparative effects of advanced nursing on subsequent growth and survival. Fingerlings were kept in nylon hapas and fed at 5% biomass day-1 during advanced nursing (4 or 6 months) before stocking at 3 fishes m-2 in 18 fertilized earthen ponds (200 ...

2. An acoustic detector of turbot feeding activity

Author:
Mallekh, R.; Lagardere, J.P.; Eneau, J.P.; Cloutour, C.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 481-489
ISSN:
0044-8486
Subject:
fish culture; fish farms; turbot; pelleted feeds; detectors; Scophthalmus maximus; sounds; feeding behavior; fish feeding
Abstract:
... In fish farm conditions, visual observation of fish appetite is often impeded by high fish density and water turbidity. The present study contributes to resolution of this problem by the development of an acoustic method for direct monitoring of turbot feeding activity using sounds emitted by fish during a feeding period. The method uses an acoustic sensor (hydrophone) and a data processing system ...

3. An investigation of sex determination in the Mozambique tilapia, Oreochromis mossambicus, using synaptonemal complex analysis, FISH, sex reversal and gynogenesis

Author:
Campos-Ramos, R.; Harvey, S.C.; McAndrew, B.J.; Penman, D.J.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 125-140
ISSN:
0044-8486
Subject:
fluorescence in situ hybridization; Oreochromis mossambicus; females; synaptonemal complex; males; sex determination; gynogenesis; sex chromosomes; genetic recombination
Abstract:
... The Mozambique tilapia, Oreochromis mossambicus, is known to have an XX female/XY male sex determination system. Analysis of the pachytene meiotic chromosomes in O. mossambicus and hybrids with Oreochromis niloticus demonstrated a region of diffuse lateral elements and differential staining in the long arm of bivalent 1 that was present only in heterogametic fish. Homology was also demonstrated be ...

4. Anthropogenic effects on seston quality and quantity and the growth and survival of Sydney rock oyster (Saccostrea glomerata) in two estuaries in NSW, Australia

Author:
Paterson, K.J.; Schreider, M.J.; Zimmerman, K.D.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 407-426
ISSN:
0044-8486
Subject:
Ostreidae; oysters; oyster culture; animal growth; mortality; water pollution; estuaries; agricultural watersheds; agricultural runoff; ammonium nitrogen; nitrate nitrogen; water quality; New South Wales
Abstract:
... The influence that catchment development has on the growth and survival of the Sydney rock oyster, through its effect on the quality and quantity of seston was investigated in Brisbane Water and Lake Macquarie. Developed locations recorded elevated levels of dissolved nitrogen (NH3 and NOx) and chlorophyll a compared to undeveloped locations. Total particulate matter (TPM), particulate inorganic m ...

5. A retinoic acid receptor-selective agonist causes jaw deformity in the Japanese flounder, Paralichthys olivaceus

Author:
Haga, Y.; Suzuki, T.; Kagechika, H.; Takeuchi, T.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 381-392
ISSN:
0044-8486
Subject:
Paralichthys; fish diseases; jaws; abnormal development; agonists; retinoic acid; receptors; structural genes; gene expression; osteoblasts
Abstract:
... We examined the effects of synthetic retinoids on the jaw development of Japanese flounder during postembryonic development. Flounder larvae were exposed to Am80 [a retinoic acid receptor (RAR)α/β-selective retinoid] and methoprene acid [MA, a retinoid X receptor (RXR)-selective retinoid]. Am80 induced lower jaw deformities in all fish, whereas MA induced lower jaw deformities in less than 20% of ...

6. Artificial photoperiod influence on the immune system of juvenile rainbow trout (Oncorhynchus mykiss) in the Southern Hemisphere

Author:
Leonardi, M.O.; Klempau, A.E.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 581-591
ISSN:
0044-8486
Subject:
T-lymphocytes; immunosuppression; animal stress; erythrocyte count; Oncorhynchus mykiss; acclimation; blood plasma; blood platelets; photoperiod; cortisol; lymphocyte proliferation; B-lymphocytes
Abstract:
... The influence of artificial photoperiods on the immune system of juvenile rainbow trout (Oncorhynchus mykiss) was analyzed in the Southern Hemisphere. Experimental fish were exposed to different photoperiod regimes during 140 days: 14 acclimatizing days at LD 10:14, 60 days at LD 24:0, 30 days at LD 10:14 and 30 days at LD 12:12. Control fish were kept at a "natural" photoperiod of 14 acclimatizin ...

7. A semi-recirculating, integrated system for the culture of fish and seaweed

Author:
Schuenhoff, A.; Shpigel, M.; Lupatsch, I.; Ashkenazi, A.; Msuya, F.E.; Neori, A.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 167-181
ISSN:
0044-8486
Subject:
fish culture; effluents; ammonia; carbon dioxide; seaweed culture; recirculating aquaculture systems; Ulva; Echinodermata; wastewater treatment; biofilters; heat transfer; Sparus aurata; Haliotis discus; biofiltration; dissolved oxygen; mollusc culture; fish ponds
Abstract:
... Biofiltration allows for environmentally sustainable mariculture. An intensive, biofiltered recirculating integrated system producing fish and seaweed on a semi-commercial scale was evaluated with respect to production and to nutrient and heat budgets. The system consisted of abalone (Haliotis discus hannai) and sea urchin (Paracentrotus lividus) tanks, an intensive fishpond (Sparus aurata), and a ...

8. Biochemical changes during the embryonic development of Norway lobster, Nephrops norvegicus

Author:
Rosa, R.; Morais, S.; Calado, R.; Narciso, L.; Nunes, M.L.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 507-522
ISSN:
0044-8486
Subject:
Nephrops norvegicus; sterol esters; diacylglycerols; monoacylglycerols; lipid metabolism; essential amino acids; lipid composition; triacylglycerols; long chain fatty acids; amino acid composition; saturated fatty acids; lobsters; polyunsaturated fatty acids; embryogenesis; amino acid metabolism
Abstract:
... The objectives of the present study were to investigate the total and free amino acid profiles and lipid dynamics (lipid classes and fatty acids) during embryogenesis of Nephrops norvegicus, in order to understand the early larval protein and lipid requirements. There was a significant increase in total essential (EAA) and nonessential amino acid (NEAA) contents during embryonic development (P<0.0 ...

9. Biochemical, physiological and hematological changes in white spot syndrome virus-infected shrimp, Penaeus indicus

Author:
Yoganandhan, K.; Thirupathi, S.; Sahul Hameed, A.S.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 1-11
ISSN:
0044-8486
Subject:
lipid content; fatty acids; ammonia; muscles; Baculoviridae; carbohydrate content; glucose; animal proteins; oxygen consumption; excretion; hepatopancreas; white spot syndrome; amino acid composition; shrimp; protein content; hemocytes; Penaeus
Abstract:
... The biochemical and hematological changes provoked by white spot syndrome virus (WSSV) in hemolymph, hepatopancreas and muscle of Penaeus indicus were examined. Total carbohydrate, glucose, total protein, amino acids, fatty acids and hemocyanin were measured in healthy and WSSV-infected shrimp. There was a significant increase in glucose and total carbohydrate levels in the hemolymph of WSSV-infec ...

10. Culture-based fisheries: an underutilised opportunity in aquaculture development

Author:
De Silva, S.S.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 221-243
ISSN:
0044-8486
Subject:
fisheries; fish culture; fish production; rural areas; developing countries
Abstract:
... The reasons for considering culture-based fisheries as an aquaculture practice are presented. The need to develop culture-based fisheries, which are basically a nonconsumptive user of water compared to conventional aquaculture practices such as pond culture, to augment the aquatic food supplies, in the wake of increasing consumption of aquatic food, dwindling catches from the wild, and the decreas ...

11. Dietary phosphorus requirement of juvenile haddock (Melanogrammus aeglefinus L.)

Author:
Roy, P.K.; Lall, S.P.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 451-468
ISSN:
0044-8486
Subject:
calcium phosphates; urine; feed conversion; nutrient deficiencies; fingerlings; excretion; deficiency diseases; ash content; nutrient requirements; bones; fish diseases; phosphorus; fish feeding; Melanogrammus aeglefinus; juveniles
Abstract:
... A study was conducted to determine the quantitative requirement, excretion, availability and deficiency signs of phosphorus in haddock. Triplicate groups of haddock (4.2±0.01 g) were fed diets containing 0.42, 0.62, 0.82, 1.02 and 1.22% P and 19 MJ digestible energy (DE) per g of diet to satiation for 12 weeks. The basal diet, containing 0.42% P (0.08 g available P per MJ DE), was supplemented wit ...

12. Differences between short- and long-term cultures of Uronema marinum (Ciliophora: Scuticociliatida) in chemiluminescence inhibitory activity, antioxidative enzyme and protease activity

Author:
Kwon, S.R.; Kim, C.S.; Kim, K.H.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 107-114
ISSN:
0044-8486
Subject:
animal parasites and pests; chemiluminescence; catalase; immunosuppression; cell culture; proteinases; superoxide dismutase; reactive oxygen species; pathogenicity; phagocytes; enzyme activity
Abstract:
... Differences between short-term (STC) and long-term (LTC) in vitro cultures of Uronema marinum in suppression of olive flounder (Paralichthys olivaceus) phagocytes' chemiluminescent (CL) response, antioxidative enzymes and protease activity were investigated. Luminol-enhanced CL was used to measure the production of reactive oxygen intermediates (ROIs) generated by respiratory burst of phagocytes u ...

13. Effect of different treatments on the chorion permeability to DMSO of turbot embryos (Scophthalmus maximus)

Author:
Cabrita, E.; Chereguini, O.; Luna, M.; Paz, P. de; Herraez, M.P.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 593-604
ISSN:
0044-8486
Subject:
membrane permeability; sodium hypochlorite; cryopreservation; proteinases; chorion; dimethyl sulfoxide; turbot; cryoprotectants; calcium hypochlorite; Scophthalmus maximus; pretreatment
Abstract:
... While cryopreservation techniques have been largely established for mammalian embryos, attempts to freeze fish embryos are still unsuccessful because of basic and technical problems. Insufficient dehydration and cryoprotectant penetration of fish embryos due to their relative large size and the presence of membranes and compartments with different water and cryoprotectant permeabilities are the ma ...

14. Effect of ovarian stage on plasma vitellogenin and calcium in cultured white sturgeon

Author:
Linares-Casenave, J.; Kroll, K.J.; Van Eenennaam, J.P.; Doroshov, S.I.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 645-656
ISSN:
0044-8486
Subject:
Acipenser transmontanus; vitellogenin; blood plasma; enzyme immunoassays; calcium; ovarian development; sexual maturity
Abstract:
... We developed an enzyme immunoassay for plasma vitellogenin (VTG) of white sturgeon Acipenser transmontanus, cultured in California. The assay, based on polyclonal rabbit antibody to purified VTG, was tested for specificity and applied on sturgeon broodstocks (age 4-12 years) reared at three locations. Plasma VTG concentrations were correlated with total plasma calcium and stage of ovarian maturity ...

15. Effects of copper-based antifouling treatment on the presence of Neoparamoeba pemaquidensis Page, 1987 on nets and gills of reared Atlantic salmon (Salmo salar)

Author:
Douglas-Helders, G.M.; Tan, C.; Carson, J.; Nowak, B.F.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 13-22
ISSN:
0044-8486
Subject:
fish farms; Salmo salar; fish culture; fish diseases; amebiasis; gills; Sarcomastigophora; disease control; net pens; mariculture; paints; copper; antifouling agents; biofilm; biofouling
Abstract:
... Amoebic gill disease (AGD) is the main disease affecting the salmon industry in Australia. Little information is available on the epidemiology of AGD and the biology of Neoparamoeba pemaquidensis [Page, 1987], the disease-causing organism of AGD. In previous studies, N. pemaquidensis was found on biofouled netting of sea cages, and a reduction in AGD prevalence was achieved with increasing number ...

16. Effects of dietary conjugated linoleic acids and total dietary lipid concentrations on growth responses of juvenile channel catfish, Ictalurus punctatus

Author:
Twibell, R.G.; Wilson, R.P.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 621-628
ISSN:
0044-8486
Subject:
Ictalurus punctatus; fish feeding; dietary fat; conjugated linoleic acid; feed supplements; animal growth; feed conversion; lipid content; protein content; liver; carcass composition; liveweight gain
Abstract:
... Dietary conjugated linoleic acids (CLA) have been shown to alter growth rates and tissue lipid concentrations in some species of fish, but have not been evaluated in channel catfish. In the current study, a 3x3 factorial design was used to examine the effects of dietary CLA and total dietary lipid concentrations on growth rate, tissue proximate composition and nutrient retention of channel catfish ...

17. Effects of oral treatment with TNP-470 on rainbow trout (Oncorhynchus mykiss) infected with Tetracapsuloides bryosalmonae (Malacosporea), the causative agent of proliferative kidney disease

Author:
Morris, D.J.; Adams, A.; Smith, P.; Richards, R.H.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 51-64
ISSN:
0044-8486
Subject:
Myxozoa; antiprotozoal agents; histopathology; Oncorhynchus mykiss; nephrotoxicity; protozoal infections; fish diseases; kidneys; kidney diseases; oral administration; adverse effects
Abstract:
... At present, there are no licensed chemical treatments for proliferative kidney disease (PKD) in rainbow trout Oncorhynchus mykiss. An analogue of fumagillin, TNP-470, has been suggested as a treatment for the disease in sockeye salmon, Oncorhynchus nerka. We report on a series of trials to examine the use of TNP-470 for the treatment of PKD in rainbow trout. Through these trials, we found that, un ...

18. Effects of rearing density, size grading and parental factors on sex ratios of the sea bass (Dicentrarchus labrax L.) in intensive aquaculture

Author:
Saillant, E.; Fostier, A.; Haffray, P.; Menu, B.; Laureau, S.; Thimonier, J.; Chatain, B.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 183-206
ISSN:
0044-8486
Subject:
Dicentrarchus; fish culture; stocking rate; sex ratio; body size; animal growth; sex determination; genotype; pedigree; loci; microsatellite repeats; males; females
Abstract:
... The effects of rearing density and size grading on sex ratios in 30 families of sea bass reared in the same tank from the fertilization stage onwards were investigated. Two extreme density treatments (high versus low) were applied in quadruplicates throughout the labile period for sex determination. An excess of males (88%) was found in all groups. Growth was faster under low density from 49 to 19 ...

19. Effects of temperature on initial swim bladder inflation and related development in cultured striped trumpeter (Latris lineata) larvae

Author:
Trotter, A.J.; Pankhurst, P.M.; Morehead, D.T.; Battaglene, S.C.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 141-156
ISSN:
0044-8486
Subject:
marine fish; swim bladder; larval development; fish larvae; water temperature; mortality
Abstract:
... Many physoclist fish have physostomous larvae, initially inflating the swim bladder by ingesting air at the water surface during a brief, finite period. Failed initial swim bladder inflation has been predominantly linked to abiotic factors and larvae which fail to complete initial swim bladder inflation exhibit reduced survival and growth. This study investigates the effects of temperature on init ...

20. Efficiency of feed utilization in Atlantic salmon (Salmo salar L.) fed diets with increasing substitution of fish meal with vegetable proteins

Author:
Opstvedt, J.; Aksnes, A.; Hope, B.; Pike, I.H.
Source:
Aquaculture 2003 v.221 no.1-4 pp. 365-379
ISSN:
0044-8486
Subject:
Salmo salar; fish feeding; fish meal; soybean meal; corn gluten meal; digestibility; digestible protein; digestible energy; feed intake; liveweight gain; feed conversion
Abstract:
... Atlantic salmon smolts were fed for 15-week diets where 28% and 55% of the fish meal, respectively, were replaced by a mixture of full-fat soybean meal and maize gluten meal in comparison with a diet where 89% of the protein came from fish meal and the remainder from full-fat soybean meal and maize gluten meal. The diets were equal in gross energy, crude protein, lipids, carbohydrates, lysine and ...