19 results match your criteria Aquaculture[Journal]

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Impact of dietary phosphorous in diploid and triploid Atlantic salmon ( L.) with reference to early skeletal development in freshwater.

Aquaculture 2018 Mar;490:329-343

Institute of Aquaculture, University of Stirling, Stirling, Scotland, UK.

In order to assess the effect of dietary phosphorus (P) in reducing vertebral malformations and improving freshwater (FW) performance in triploid Atlantic salmon (), both triploid and diploid Atlantic salmon were fed three different dietary P inclusion levels (low: 4.9, medium: 7.7, and high: 9. Read More

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March 2018
3 Reads

Cryobanking of aquatic species.

Aquaculture 2017 Apr 1;472:156-177. Epub 2016 Jun 1.

CCMAR-Centre of Marine Sciences, University of Algarve, Campus Gambelas, 8005-139 Faro, Portugal.

This review is focused on the applications of genome cryobanking of aquatic species including freshwater and marine fish, as well as invertebrates. It also reviews the latest advances in cryobanking of model species, widely used by the scientific community worldwide, because of their applications in several fields. The state of the art of cryopreservation of different cellular types (sperm, oocytes, embryos, somatic cells and primordial germ cells or early spermatogonia) is discussed focusing on the advantages and disadvantages of each procedure according to different applications. Read More

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April 2017
18 Reads

Modelling growth performance and feeding behaviour of Atlantic salmon ( L.) in commercial-size aquaculture net pens: Model details and validation through full-scale experiments.

Aquaculture 2016 11;464:268-278

Nofima, NO-6600 Sunndalsøra, Norway.

We have developed a mathematical model which estimates the growth performance of Atlantic salmon in aquaculture production units. The model consists of sub-models estimating the behaviour and energetics of the fish, the distribution of feed pellets, and the abiotic conditions in the water column. A field experiment where three full-scale cages stocked with 120,000 salmon each (initial mean weight 72. Read More

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November 2016
17 Reads

Environmental and physiological factors shape the gut microbiota of Atlantic salmon parr ( L.).

Aquaculture 2017 Jan;467:149-157

Institute of Biological and Environmental Sciences, University of Aberdeen, Tillydrone Avenue, Aberdeen AB24 2TZ, UK.

Gut microbes are key players in host immune system priming, protection and development, as well as providing nutrients to the host that would be otherwise unavailable. Due to this importance, studies investigating the link between host and microbe are being initiated in farmed fish. The establishment, maintenance and subsequent changes of the intestinal microbiota are central to define fish physiology and nutrition in the future. Read More

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January 2017
9 Reads

PRODUCTION AND ECONOMIC OPTIMIZATION OF DIETARY PROTEIN AND CARBOHYDRATE IN THE CULTURE OF JUVENILE SEA URCHIN .

Aquaculture 2016 10 12;463:51-60. Epub 2016 May 12.

University of Alabama at Birmingham, Department of Biology, 1300 University Blvd., CH 375, Birmingham, AL 35294, USA, 205-934-2045.

Juvenile (ca. 3.95± 0. Read More

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October 2016
17 Reads

Amine reactive dyes: an alternative to estimate membrane integrity in fish sperm cells.

Aquaculture 2016 10 20;463:71-78. Epub 2016 May 20.

Aquatic Germplasm and Genetic Resources Center, School of Renewable Natural Resources, Louisiana State University Agricultural Center, 2288 Gourrier Avenue, Baton Rouge, LA 70820.

Fluorescent dyes that binds irreversibly to cellular amines, come in several available emission spectra, and do not poses health concerns were used to evaluate membrane integrity in fish sperm cells. The objectives of the present study were to determine: (1) a working dye concentration for fish sperm samples, and (2) if the traditional propidium iodide/SYBR-14 staining combination was comparable with the amine reactive dye (ARD) methods at identifying cell populations with intact and compromised membranes after sperm activation, refrigerated storage, and exposure to cryoprotectant and surfactant. Zebrafish () sperm were obtained by stripping, and pooled samples (in triplicate) were used in all tests. Read More

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October 2016
10 Reads

Time-to-response toxicity analysis as a method for drug susceptibility assessment in salmon lice.

Aquaculture 2016 11;464:570-575

Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling, FK9 4LA, Scotland, UK.

The salmon louse (Krøyer, 1837) is an ectoparasite causing infections of wild and farmed Atlantic salmon ( L.) in the Northern hemisphere. While control at commercial mariculture sites increasingly employs non-medicinal approaches, such as cage designs reducing infection rates and biological control through cleaner fish, anti-parasitic drugs are still a requirement for effective fish health care. Read More

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November 2016
13 Reads

Optimizing dietary levels of menhaden and soybean oils and soybean lecithin for pre-gonadal somatic growth in juveniles of the sea urchin .

Aquaculture 2015 Sep;446:198-205

Department of Biology, University of Alabama at Birmingham, 1300 University Boulevard, Birmingham, Alabama, 35294, USA.

Dietary lipids serve as important sources of energy and essential fatty acids for aquatic animals. Sources of animal and plant oils are increasingly limited as well as expensive, and dietary requirements associated with the inclusion of these oils must be carefully evaluated to facilitate sustainable and affordable formulations. In this study, we investigated quantities of menhaden oil (MO) with and without soybean lecithin or soybean oil (SO) to determine appropriate levels for optimal somatic growth for pre-gonadal juvenile . Read More

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September 2015
25 Reads

Evaluation of a high-EPA oil from transgenic in feeds for Atlantic salmon ( L.): Effects on tissue fatty acid composition, histology and gene expression.

Aquaculture 2015 Jul;444:1-12

Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling FK9 4LA, United Kingdom.

Currently, one alternative for dietary fish oil (FO) in aquafeeds is vegetable oils (VO) that are devoid of omega-3 (n-3) long-chain polyunsaturated fatty acids (LC-PUFAs). Entirely new sources of n-3 LC-PUFA such as eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids through de novo production are a potential solution to fill the gap between supply and demand of these important nutrients. was metabolically engineered to produce a seed oil (ECO) with > 20% EPA and its potential to substitute for FO in Atlantic salmon feeds was tested. Read More

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July 2015
17 Reads

Effects of transportation stress and addition of salt to transport water on the skin mucosal homeostasis of rainbow trout ().

Aquaculture 2015 Jan;435:120-127

Centre of Evolutionary and Theoretical Immunology Biology Department University of New Mexico, Albuquerque NM87131 USA.

Transportation of live fish is a common practice among aquaculture facilities. Many studies have previously reported how transport elicits physiological stress responses and increases disease susceptibility in farmed fish. The aim of this work is to investigate the changes that the skin of rainbow trout () experiences due to stress. Read More

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January 2015
17 Reads

Preferential feeding on high quality diets decreases methyl mercury of farm-raised common carp ( L.).

Aquaculture 2012 Mar;338-341(100):105-110

WasserCluster Lunz, Biologische Station, Aquatic Lipid Research and Ecotoxicology, Dr. Carl Kupelwieser Promenade 5, A-3293 Lunz am See, Austria ; Universität Wien, Department of Limnology, Althanstraße 14, A-1090 Wien, Austria.

This study on aquaculture ponds investigated how diet sources affect methyl mercury (MeHg) bioaccumulation of the worldwide key diet fish, common carp (). We tested how MeHg concentrations of one and two year-old pond-raised carp changed with different food quality: a) zooplankton (natural pond diet), b) cereals enriched with vegetable oil (VO ponds), and c) compound feeds enriched with marine fish oils (FO ponds). It was hypothesized that carp preferentially feed on supplementary diets with the highest biochemical quality (FO diet over VO diets over zooplankton). Read More

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March 2012
15 Reads

Sources of variation in flow cytometric analysis of aquatic species sperm: The effect of cryoprotectants on flow cytometry scatter plots and subsequent population gating.

Aquaculture 2012 Dec 11;370-371:179-188. Epub 2012 Oct 11.

Aquaculture Research Station, Louisiana State University Agricultural Center, Baton Rouge, Louisiana, USA.

The use of fluorescent staining and flow cytometry to assess sperm quality in aquatic species has increased over the past decade, but comparisons among studies are difficult or impossible due to variation in application, analysis, and reporting of protocols and data.The goal of the present study was to determine the effect of exposure to two cryoprotectants commonly used for cryopreservation of sperm from aquatic species on the accuracy of flow cytometric assessment of sperm quality.Membrane integrity of zebrafish (Danio rerio) sperm exposed to 10% and 20%methanol and dimethyl sulfoxide (DMSO)in 300 mOsm kg(-1) Hanks' balanced salt solution (HBSS) or calcium-free HBSSwas determined using SYBR 14/propidium iodide staining. Read More

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December 2012
6 Reads

EFFECT OF DIETARY PROTEIN AND CARBOHYDRATE LEVELS ON WEIGHT GAIN AND GONAD PRODUCTION IN THE SEA URCHIN

Aquaculture 2012 Aug;358-359:253-261

University of South Florida, Department of Biology, 4202 East Fowler Avenue, Tampa, FL 33620.

Adult were fed eight formulated diets with different protein (ranging from 12 to 36%) and carbohydrate (ranging from 21 to 39 %) levels. Each sea urchin (n = 8 per treatment) was fed a daily sub-satiation ration of 1.5% of average body weight for 9 weeks. Read More

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August 2012
23 Reads

Feeding preferences of mesograzers on aquacultured Gracilaria and sympatric algae.

Aquaculture 2011 Dec;322(323):218-222

Department of Biology, The American University in Cairo, New Cairo 11835, Egypt.

While large grazers can often be excluded effectively from algal aquaculture operations, smaller herbivores such as small crustaceans and gastropods may be more difficult to control. The susceptibility of three Gracilaria species to herbivores was evaluated in multiple-choice experiments with the amphipod Ampithoe ramondi and the crab Acanthonyx lunulatus. Both mesograzers are common along the Mediterranean coast of Israel. Read More

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December 2011
9 Reads

Tol2-mediated transgenesis in tilapia (Oreochromis niloticus).

Aquaculture 2011 Oct;319(3-4):342-346

Department of Biology, University of Maryland, 1210 Biology/Psychology Building, University of Maryland, College Park, Maryland 20742, USA.

The Nile tilapia (Oreochromis niloticus) is an important species in aquaculture and an excellent model system for laboratory studies. Functional genetic analysis using this species has been difficult because existing methods for producing transgenics are inefficient. Here we show that the Tol2 transposon system can be used to create transgenic tilapia with high efficiency. Read More

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October 2011
8 Reads

Whole-body cortisol response of zebrafish to acute net handling stress.

Aquaculture 2009 Dec;297(1-4):157-162

Oregon Cooperative Fish and Wildlife Research Unit, U.S. Geological Survey and Department of Fisheries and Wildlife, 104 Nash Hall, Oregon State University, Corvallis, OR 97331-3803, USA.

Zebrafish, , are frequently handled during husbandry and experimental procedures in the laboratory, yet little is known about the physiological responses to such stressors. We measured the whole-body cortisol levels of adult zebrafish subjected to net stress and air exposure at intervals over a 24 h period; cortisol recovered to near control levels by about 1 h post-net-stress (PNS). We then measured cortisol at frequent intervals over a 1 h period. Read More

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December 2009
11 Reads

Post-thaw amendment of cryopreserved sperm for use in artificial insemination of a viviparous fish, the green swordtail .

Aquaculture 2006 Sep 20;259(1-4):403-414. Epub 2006 May 20.

Aquaculture Research Station, Louisiana State University Agricultural Center, Louisiana Agricultural Experiment Station, Baton Rouge, Louisiana 70803, USA.

Sperm cryopreservation protocols have been developed for live-bearers such as the green swordtail and the platyfish . Despite the high post-thaw motility (~75%) obtained in both species, the requirements of sperm storage within the female reproductive tract coupled with the process of internal fertilization place functional demands upon cryopreserved sperm samples far beyond those of oviparous species. The purpose of this study was to facilitate the artificial insemination process with cryopreserved sperm of through evaluation of parameters related to sperm quality after thawing. Read More

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September 2006
4 Reads

Compositional and toxicological evaluation of the diazotrophic cyanobacterium, Cyanothece sp. strain ATCC 51142.

Aquaculture 1995 ;134:339-49

Deparment of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA.

Compositional analyses of Cyanothece sp. strain ATCC 51142 showed high protein (50-60%) and low fat (0.4-1%) content, and the ability to synthesize vitamin B12. Read More

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April 1997
6 Reads

Triploidy induction in recently fertilized Atlantic salmon ova using anaesthetics.

Aquaculture 1989 ;78(3-4):229-36

DAFS Marine Laboratory, Victoria Road, Aberdeen, Great Britain.

The comparative effectiveness of five general anaesthetics as agents for inducing triploidy in recently fertilized Atlantic salmon ova is reported. Triploid rates and triploid yields following the exposures of eggs from a single female fish to nitrous oxide, and separately to Freon 22, were shown to be related to the partial pressure and duration of exposure. The maximum triploid yield (79. Read More

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January 1989
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