شماره مطلب: 489

The history of the aquaculture genetics program at Auburn University

The Auburn University Aquaculture Genetics Program has an 80-year history with focused efforts on geneticsand breeding, transgenic technology and genomics being initiated 43, 27 and 18 years ago. This resulted in thefirst successful selection experiments for channel catfish, Ictalurus punctatus, the basis of the monosex tilapia industry,the first production of transgenic fish in the US, major advances in catfish genomics and the first productionof a xenogenic catfish.
شماره مطلب: 488

Molecular and morphological analyses reveal that the pathogen Benedenia seriolae (Monogenea: Capsalidae) is a complex species: Implications for yellowtail Seriola spp. aquaculture

Monogeneans such as Benedenia seriolae are important pathogens of Seriola spp. that are farmed around theworld. In northern Chile, cultures of Seriola lalandi are being developed, and B. seriolae has been recorded infarmed fish and in natural populations. In this study, specimens identified as B. seriolae collected from farmedS. quinqueradiata in Japan were compared with specimens of B. seriolae collected from natural populations ofS.
شماره مطلب: 487

Modelling the flood cycle, aquaculture development potential and risk using MODIS data: A case study for the floodplain of the Rio Paraná, Argentina

Aquaculture has been developing in Argentina since the early 20th century and although it is still considered amarginal activity it has grown quickly in recent years.
شماره مطلب: 486

Introduction to genetics in aquaculture XI: The past, present and future of aquaculture genetics

The Eleventh International Symposium on Genetics in Aquaculture(ISGA) was organized by the Department of Fisheries and AlliedAquacultures (now the School of Fisheries, Aquaculture and AquaticSciences), Auburn University, Alabama, USA. The symposium was heldfrom June 22–30, 2012 at the Auburn University Hotel and ConferenceCenter, Auburn University, Auburn, Alabama, USA.With increased demand for aquacultured foods, has come a need formore efficient production systems.
شماره مطلب: 485

Essential oils of Lippia sidoides and Mentha piperita against monogenean parasites and their influence on the hematology of Nile tilapia

This study evaluated the use of therapeutic baths containing essential oils of Lippia sidoides (pepper rosemary)and Mentha piperita (peppermint) on the hematological parameters of Nile tilapia parasitized by the monogeneansCichlidogyrus tilapiae, Cichlidogyrus thurstonae, Cichlidogyrus halli, and Scutogyrus longicornis. A total of320 juvenile fish were distributed into 16 tanks of capacity 100 L (20 fish per tank), divided into 4 treatmentsin quadruplicates: fish exposed to a bath of L. sidoides at 20 mg L−1; fish exposed to M.
شماره مطلب: 484

Cost-effectiveness of alternative disease management policies for Bacterial kidney disease in Atlantic salmon aquaculture

Bacterial kidney disease (BKD) is a systemic infectious disorder of the Salmonidae associated with increasedmortality in Atlantic salmon a necessary cause of which is infection with Renibacterium salmoninarum. Thecost-effectiveness of various possible national management policies to control this disease is investigated. It isconcluded that the control of BKD is cost-effective, and that a policy of limiting the spread of R. salmoninarumthrough the detection of BKD-affected sites, the imposition ofmovement restrictions on these, and the requirementto eradicate R.
شماره مطلب: 483

Community composition of the intertidal in relation to the shellfish aquaculture industry in coastal British Columbia, Canada

The intertidal region of the Pacific Northwest is under ever increasing pressure to be used exclusively for theindustrial sized operations of shellfish aquaculture. In British Columbia (BC), aquaculture practices includeseeding the intertidal with the non-indigenous Venerupis philippinarum followed by the application of antipredatornetting. Ecological consequences of such practices applied at large scales are unknown.
شماره مطلب: 460

The behavioral mechanism of competition for food between tilapia (Oreochromis hybrid) and crayfish (Cherax quadricarinatus)

Studies on polyculture have usually investigated the consequences of this widespread culture method for growthand survival of the cultured species. However, research into the behavioral mechanism underlying competitionbetween co-cultured species is lacking. For the first time in co-cultured fish and crustaceans, this study exploredexperimentally the behavioral interaction between red tilapia and red-claw crayfish in the context of foodcompetion.
شماره مطلب: 459

Physiological stress biomarkers reveal stocking density effects in late larval Delta Smelt (Hypomesus transpacificus)

Suboptimal fish stocking densities in experimental systems may elicit stress responses that can affect experimentalresults. Fish species, age and size, water chemistry and flow, and physical characteristics of the experimentalsystem (e.g., tank, cage) are among the parameters to be considered when determining stocking densities.However, systematic studies to define fish densities minimizing stress in experimental systems are rarelyperformed.
شماره مطلب: 458

Essential oils of Lippia sidoides and Mentha piperita against monogenean parasites and their influence on the hematology of Nile tilapia

This study evaluated the use of therapeutic baths containing essential oils of Lippia sidoides (pepper rosemary)and Mentha piperita (peppermint) on the hematological parameters of Nile tilapia parasitized by the monogeneansCichlidogyrus tilapiae, Cichlidogyrus thurstonae, Cichlidogyrus halli, and Scutogyrus longicornis. A total of320 juvenile fish were distributed into 16 tanks of capacity 100 L (20 fish per tank), divided into 4 treatmentsin quadruplicates: fish exposed to a bath of L. sidoides at 20 mg L−1; fish exposed to M.
شماره مطلب: 457

Dietary manganese requirement of juvenile large yellow croaker Larimichthys crocea (Richardson, 1846)

A 9-week feeding trial was conducted to determine the dietary manganese (Mn) requirement of juvenile largeyellow croaker Larimichthys crocea (Richardson, 1846) (initial mean weight 7.71 ± 0.02 g). Manganese sulfatemonohydrate (MnSO4·H2O) was added to the semi-purified basal diet to prepare 6 experimental diets withgraded levels of Mn (2.33, 7.63, 13.16, 18.27, 24.05 and 41.79 mg/kg, respectively).
شماره مطلب: 418

Agronomy of fibre hemp (Cannabis sati6a L.) in Europe

فایل پیوست: 
Fibre hemp may yield up to 25 t above ground dry matter per hectare (20 t stem dry matter ha1) which maycontain as much as 12 t ha1 cellulose, depending on environmental conditions and agronomy. Its performance isaffected by the onset of flowering and seed development. Effects of cultivar and management on yield and qualitywere tested at three contrasting sites in Italy, the Netherlands and the UK in three years, making use of standardisedprotocols for experimental design and research methodology.
شماره مطلب: 416

Cadmium availability to plants in relation to major long-term changes in agronomy systems

فایل پیوست: 
Cd concentrations in food products may be controlled to some extent by reducing metal inputs in agrosystems. However,Cd is available to plants, so the management of its residual fraction in soil must be considered. Differential Cd uptake amongcrop species and cultivars is well known, but the long lasting effects of other agricultural practices are less clearlyunderstood. Generally, cropping systems affect the physico-chemical properties of soil. These may produce subsequentchanges in metal mobility and bioavailability. The effects of agricultural practices, e.g.
شماره مطلب: 415

Agronomy for Sustainable Agriculture: A Review

فایل پیوست: 
Sustainability rests on the principle that wemust meet the needs of the present without compromisingthe ability of future generations to meet theirown needs. Starving people in poor nations, obesityin rich nations, increasing food prices, on-going climatechanges, increasing fuel and transportation costs,flaws of the global market, worldwide pesticide pollution,pest adaptation and resistance, loss of soil fertilityand organic carbon, soil erosion, decreasing biodiversity,desertification, and so on.
شماره مطلب: 413

Heavy metals balance in Polish and Dutch agronomy: Actual state and previsions for the future

فایل پیوست: 
This paper presents the state of agro-ecosystem contamination with heavy metals in relation to the level of agriculturaldevelopment. For this, the Polish and Dutch agricultural situations were compared. The intensive animal and vegetableproduction observed in the Netherlands over the past 20–30 years was found to substantially contribute to the heavy metal inputof these systems. Agriculture in Poland is on the brink of a rapid economical and technological push promoted by the recentadmission of Poland to the EU.
شماره مطلب: 411

Energy balance in Iran’s agronomy (1990–2006)

فایل پیوست: 
In this study data from 17 years (1990–2006) were collected to determine energy intensive areas andevaluate energy parameters of Iran’s agronomy sector. All the direct and indirect inputs of energy for theproduction of 19 agricultural commodities were evaluated. The inputs and outputs were calculated bymultiplying the amounts of inputs and outputs by their energy equivalents. The results indicated thattotal energy input increased from 32.40 GJ ha1 in 1990 to 37.20 GJ ha1 in 2006. At the same period,total output energy increased from 30.85 to 43.68 GJ ha1.
شماره مطلب: 410

Tillage impacts on soil microbial biomass C, N and P, earthworms and agronomy after two years of cropping following permanent pasture in New Zealand

فایل پیوست: 
Conversion of pasture land to crop rotation by plow tillage and reversion to pasture for replenishment of nutrients is a commonpractice in New Zealand. It is known that plow tillage decreases soil organic matter and causes biological degradation.
شماره مطلب: 408

Genetic improvement and agronomy for enhanced wheat competitiveness with weeds

فایل پیوست: 
The rapid development of herbicide resistance in weeds, and environmental imperatives, have forced theconsideration of non-chemical tactics such as crop competition for weed management. This review of wheat–weedcompetition examines the plant traits associated with wheat competitiveness, and the opportunities for plantbreeding or manipulating crop agronomy to differentially favour the growth of the crop.
شماره مطلب: 406

Review Early intestinal growth and development in poultry

شماره مطلب: 405

Facing up to the paradigm of ecological intensification in agronomy: Revisiting methods, concepts and knowledge

فایل پیوست: 
Agriculture is facing up to an increasing number of challenges, including the need to ensure variousecosystem services and to resolve apparent conflicts between them. One of the ways forward for agriculturecurrently being debated is a set of principles grouped together under the umbrella term “ecologicalintensification”. In published studies, ecological intensification has generally been considered to be basedessentially on the use of biological regulation to manage agroecosystems, at field, farm and landscapescales.
شماره مطلب: 402

STATISTICS Interpreting Treatment 3 Environment Interaction in Agronomy Trials

effects of agronomic treatments can change differentially in relation The presence of T 3 E complicates the interpretationto environmental changes, producing a treatment 3 environment in- of the results and confounds the observed average perteraction(T 3 E). The aim of this study was to find a parsimonious formance of the agronomic treatments with their truedescription of the T 3 E existing in the 24 agronomic treatments values.