The use of biofloc systems for shrimp culture requires monitoring of water quality parameters, particularly suspended solids levels, writes Carlos Gaona et al, Universidade Federal do Rio Grande. Taken from the Global Aquaculture Advocate, a Global Aquaculture…
In the Baltic Sea, two cod stocks evolve independently. Also the juveniles of two economically important flatfish species, flounder and plaice, live there within limited space. This is possibly due to the irregular distribution of water masses of different sal…
Kassaye Balkew Workagegn, Hawassa University, Ethiopia, conducted this study to investigate the growth performance, feed utilization efficiency and survival rate of juvenile Oreochromis niloticus reared in aquaria at different water temperature.
For stock enhancement, the ideal end product is an individual that can survive in the wild until maturity. Conditioning fish for stock enhancement can increase survival and recapture rates, writes Michelle L. Walsh, University of New Hampshire. Taken from the …
Ocean acidification has a variable impact on the growth and survival of marine invertebrates. Larval stages are thought to be particularly vulnerable to environmental stressors, and negative impacts of ocean acidification have been seen on fertilization as wel…
In part three of three, A.M. Abdelhamid, Mansoura University, Egypt, aims to investigate the effect of dietary graded levels of Aqua Superzyme, Garlen Allicin, and Diamond V (Original XPC) on the chemical composition and histology of all-males mono-sex Nile ti…
Sub-Saharan Africa (SSA) aquaculture production needs to grow by 270 per cent to satiate fish demand. In order to meet this demand, many factors have to be considered. This paper, written by Lee Cocker and commissioned by NEPAD through the University of Stirli…
In part two of three, A.M. Abdelhamid, Mansoura University, Egypt, aims to investigate the effect of dietary graded levels of Aqua Superzyme, Garlen Allicin, and Diamond V (Original XPC) on feed utilization by Nile tilapia fish for 16 weeks.
Aquatic farmers face enormous pressure from native and exotic disease-causing organisms, or pathogens. Infection and disease can invade from multiple sourceswater, wild fish or shellfish, newly-introduced farmed fish or shellfish, contaminated equipment, preda…
Previous studies have documented that exposure to elevated Carbon dioxide (CO2) causes impaired antipredator behavior by coral reef fish in response to chemical cues associated with predation. However, whether ocean acidification will impair visual recognition…
The Pacific oyster, Crassostrea gigas, plays a significant role in the aquaculture industry in Ireland. Episodes of increased mortality in C. gigas have been described in many countries, and in Ireland since 2008, write Tracy A. Clegg et al, UCD Centre for Vet…
This publication, released in 2013, is a preliminary report for 2012 on commercial and a final report for recreational fisheries of the United States with landings from the US territorial seas, the US Exclusive Economic Zone (EEZ), and on the high seas.
In part one of three, A.M. Abdelhamid, Mansoura University, Egypt, aims to investigate the effect of dietary graded levels of Aqua Superzyme, Garlen Allicin, and Diamond V (Original XPC) on the growth performance and economic production of Nile tilapia fish (1…
This WorldBank report offers a global view of fish supply and demand into 2030, based on trends in each country or group of countries for the production of capture fisheries and aquaculture and the consumption of fish, driven by income and population growth.
This FAO technical paper presents an overview of the current status of feed production and on-farm feed management practices. It reviews some of the major issues and constraints in optimizing feeds and on-farm feed management practices.
Multi-decadal increase in shell removal by tourists, a process that may accelerate degradation of natural habitats, was quantified via two series of monthly surveys, conducted thirty years apart (19781981 and 20082010) in one small embayment on the Mediterrane…
A comparative study, by Partho Debnath, Manjurul Karim and Ben Belton, Worldfish, assessed the length, weight, fecundity, hatching rate and White Spot Syndrome Virus (WSSV) prevalence in black tiger shrimp (Penaeus monodon) broods collected from shallow and de…
Scientists from Rothamsted Research have successfully developed Camelina sativa oilseed plants to accumulate high levels of Omega-3 oils EPA and DHA in their seeds. This work has generated a terrestrial sustainable sources of fish oils.
Tilapia production is increasing around the world. Here Moises Diaz Barboza et al, National University of Trujillo, Peru, investigated the results of mechanising the farming of tilapia in ponds in Palo Blanco (Cascas, La Libertad, Peru).
Whirling disease (WD), a severe and widespread disease of salmonids, is caused by the myxosporean parasite Myxobolus cerebralis, write Kimbra G. Turner, et al, University of Notre Dame, USA.
In a new research project Nofima will investigate the possibilities for increased export of salmon to South Africa, write Morten Heide, Finn-Arne Egeness, Geir Sogn-Grundvg and Pirjo Honkanen, Nofima.
Non-tuberculous mycobacteria responsible for piscine mycobacteriosis usually produce visceral granulomas in both freshwater and marine species. In this study by Elisabetta Antuofermo et al, University of Sassar, Italy, the first occurrence of Mycobacterium che…
Global fisheries are overexploited worldwide, yet crucial catch statistics reported to the Food and Agriculture Organisation (FAO) by member countries remain unreliable. Recent advances in remote-sensing technology allow fishing practices to be viewed from spa…
Research by Egil Karlsbakk, et al, Institute of Marine Research, Norway, has found that ballan wrasse may host P. perurans infections. Wrasse may therefore also play a possible role in the epizootiology of Amoebic Gill Disease (AGD) in salmonids.
This report by N. Hishamunda, et al, from the Food and Agriculture Organisation of the United Nations (FAO), summarises some of the issues facing aquaculture employment governance in a number of countries, current best practices and suggestions for improvement…
Kelp ecosystems form widespread underwater forests playing a major role in structuring the biodiversity at a regional scale. Some seaweeds such as Laminaria digitata are also economically important, being exploited for their alginate and iodine content. Virgin…
Disease caused by Dactylogyrus vastator has resulted in considerable economic damage in aquaculture, write Xiao P. Zhang et al, Chinese Academy of Sciences.
Tilapia is a popular food fish all over the world and in Egypt it has been raised as food for human consumption for a long time. A field study was conducted on brood stock Nile tilapia Oreochromis niloticus to improve their reproductive performance by some com…
There have been numerous reports of plastic debris accumulation in surface waters of the central North Pacific Subtropical Gyre. Further, incidences have been reported of plastic ingestion by different marine organisms, including seabirds and small planktivoro…
Amazonian fish resources are a huge source of food for inhabitants of the basin and some commercial species have shown a potential of developing sustainable aquaculture systems, writes Luis Gabriel Quintero Pinto1Laboratorio de Ictiologa, FMVZ- UN Colombia.
Among the seven spiny lobster species found in the waters off Vietnam, Panulirus ornatus, P. homarus and P. polyphagus have been selected for farming because of demand, high prices and abundance of wild seeds, write Nguyen Thi Bich Thuy, Research Institute for…
Lepeophtheirus salmonis is a major ectoparasite pathogen of farmed Atlantic salmon (Salmo salar) in the Northern Hemisphere. Sea lice infestations have a detrimental effect on health, production and market value of fish. The ecological impact on intensive salm…
Technological innovation has made it possible to grow marine finfish in the coastal and open ocean. Along with this opportunity comes environmental risk. As a federal agency charged with stewardship of the nations marine resources, the National Oceanic and Atm…
Plastic debris litters aquatic habitats globally, the majority of which is microscopic (< 1 mm), and is ingested by a large range of species. Chelsea M. Rochman et al, University of California, US, show that fish, exposed to a mixture of polyethylene with c…
The relationship between fish health and muscle growth is critical for continued expansion of the aquaculture industry. The effect of immune stimulation on the expression of genes related to the energy balance of fish is poorly understood,write Nicholas J Pool…
Edwardsiella tarda is an enterobacterium which causes edwardsiellosis, a fatal disease of cultured fishes such as red sea bream, eel and flounder. Preventing the occurrence of E. tarda infection has thus been an important issue in aquaculture. E. tarda has bee…
In its most basic form, your property is a wildlife preserve that performs a very important function: maintaining lifes natural balance, writes Marijn van Haaren, All Pond Solutions.
A PhD research project at the Norwegian School of Veterinary Science has provided essential knowledge about the mechanisms leading to feed-induced enteritis in salmon and also insight into the salmon's intestinal immune defence system.
The bluegill (Lepomis macrochirus) is a species of freshwater fish that is native to a large region of North America, from Quebec to Northern Mexico. The species is a popular sport fish and a member of the sunfish family (Centrarchidae), which is also the fami…
