In the present study, by Mads Kristiansen, University of Tomso, Norway, et al, the impact on gut microbiology and indigenous gut histology of Atlantic salmon (Salmo salar L.) was investigated following feeding of a control and a prebiotic (EWOS prebiosal) diet…
Dr Mark McMurtry's comparison of the two schools of aquaponics shows that the media-based, 'flood/drain' approach outperforms, by a wide margin, the hydroponic raft system. Dr McMurtry is widely acknowledged as the creator of the science of aquaponics when he …
The ability of species and populations to adapt to environmental change is the cornerstone of the emerging field of ecological genomics. Until recently, genome-wide studies of genetic adaptation in non-model organisms were not possible. Steve Smith, Flinders U…
Aflatoxins are known as a hepatocarcinogen in various animal species, including fish. The present study, by Dr Ahmed Ismail Mohamed Mehrim from Mansoura University, Egypt, was designed to evaluate the ability of some medicinal herbs against aflatoxicosis regar…
The catfish industry has experienced a dramatic downsizing in the last several years in large part because of rapidly increasing feed cost. This increased cost is directly correlated to the increased price of soybean meal and corn the primary feedstuffs in cat…
This report from the Australian Government presents estimates of the financial and economic performance of the Commonwealth Eastern Tuna and Billfish Fishery and two sectors of the Southern and Eastern Scalefish and Shark Fishery. It provides survey based esti…
Aquaculture is the fastest growing food production system worldwide and is particularly important in bridging the gap between fish demand and supply in Nigeria. This study was carried out by F.O.A George et al, University of Agriculture, Nigeria, to determine …
This technical paper from the FAO provides estimates of the potential for offshore mariculture development, presenting, for the first time, quantitative spatial measures of the status and potential of offshore mariculture development that are comprehensive of …
The San Pedro (also known as the Pacific beakfish), Oplegnathus insignis, is a species of perciform fish found in the eastern Pacific Ocean. In northern Chile, San Pedro are an important food fish currently being evaluated for aquaculture. The purpose of this …
To study the effect of dietary inclusion of graded levels (0, 1, 2 %) of Fenugreek seed meal (FSM) or Cresson seeds meal (CSM)on Nile tilapia fry performance, A.M. Abdelhamid and A.A.A. Soliman, Al-Mansoura University, Egypt conducted an indoor feeding trial w…
Equipped with the zebrafish genome, researchers have designed a method to assay the function of each and every gene and to explore the effects genetic variation has on zebrafish. So far the team has generated one or more mutations in almost 40 per cent of all …
Terrestrial livestock are so different that they often have nicknames, but thousands of farmed fish look so similar that many are surprised to learn that biologists claim that fish may have different personalities too. Scientists at Nofima have studied the ind…
Hydroferrate fluid, MRN-100, an iron-based compound derived from bivalent and trivalent ferrates, is a potent antioxidant compound. Mamdooh GHONEUM, Charles Drew University of Medicine and Science, US, et al examined the protective effect of MRN-100 against ga…
Comparative genomics is a powerful tool to transfer genomic information from model species to related nonmodel species. Yu Zhang et al, Auburn University, chose catfish linkage group 8, which was found to contain microsatellite markers associated with the tole…
The yellow coloration in catfish fillets caused by carotenoids does not affect flavor, but many consumers see the yellowish fillets as inferior. Taken from the Global Aquaculture Advocate, a Global Aquaculture Alliance publication.
For some years cobia has been thought of as a fish with tremendous potential for marine aquaculture. According to a Taiwanese research paper there is the potential to farm one million tonnes of the fast-growing tropical species annually around the world, write…
With little genetic information available on Catla carp, T.K.Mohapatra et, West Bengal University of Animal and Fishery Sciences, have carried out a study to evaluate the genetic variation and phylogenetic relationship among the two different stocks of Catla c…
Digestion is described as the mechanical and chemical breakdown of food into metabolisable parts which can be used by the organism. In monogastric animals, including a wide variety of different fish species (ranging for instance from Salmon and trout via tilap…
Lab studies with channel catfish and rainbow trout have found that phytogenic feed additives can help improve weight gain, feed conversion and immunity to disease. A pond study in Mississippi, USA, by Brian C. Peterson, USDA, et al compared the performance of …
Benzocaine, 2-phenoxyethanol and MS-222 were tested as anaesthetics for several handling procedures with spotted rose snapper broodstock. Significant differences in time for induction and recovery were found with specific doses, as well as a direct correlation…
In the eastern Gulf of Mexico, off the coast of Florida, grey snapper, was found to be infected with the myxozoan parasite Sphaerospora motemarini. In order to better understand the influence this specific myxozoan has on its host, Astrid S. Holzer, Institute …
Helcio Luis de Almeida Marques, Fishery Institute of So Paulo State Agricultural Department, et al, conducted research to improve the uptake of seed in artificial collectors and optimize the amount of seed used in mussel farming. Taken from the Global Aquacult…
From both nutritionist and aquaculturist points of view, the aim is to sustainably produce aquatic food with superior sensory properties and high cardioprotective properties. The reason is that although preventable, cardiovascular diseases (CVDs) remain the to…
Canada has everything needed to fill a major share of the gap in the worlds supply of food. Yet despite the scale and scope of the opportunity, Canada is failing to take advantage of its resources, writes Brian Lee Crowley, managing director of the Macdonald-L…
F.F. Khalil, Ahmed Ismail Mehrim and Montaha E.M. Hassan, Al-Mansoura University, Egypt, have evaluated the effects of graded levels of a new commercial probiotic, Hydroyeast Aquaculture, on both sexes of adult Nile tilapia. The probiotic was found to be usefu…
Frank A. Chapman and Joel P. Van Eenennaam, in this University of Florida Publication, describe the standard method and tools for determining the sex of sturgeon by direct examination of the gonad using a minimally invasive surgical procedure.
Few would dispute that the emergence of chilled and frozen food technologies in the last century was a major advance for modern society, transforming all our lives and bringing convenience and choice. In Europe today, consumption of chilled and frozen foods is…
In an indoor feeding trial of Nile tilapia fish fry, A.M. Abdelhamid, Al-Mansourah University, Egypt and A.A.A. Soliman, National Institute of Oceanography and Fisheries, Egypt found that guava tree leaves meal (GTLM) and camphor tree leaves meal (CTLM) both h…
NAMIBIA - The name is too long, President Hifikepunye Pohamba joked yesterday, on the decision to rename Unam's Henties Bay Marine and Coastal Resources Research Centre after his predecessor, Sam Nujoma.
But, he added, he supported the decision.
The Presiden…
Application of feeds in aquaculture can increase both production and profits considerably. Dr Seshaiah V. Pamulapati and Prakash Chandra Behera, PVS Group, India, discuss how trace minerals are having greater role in shrimp nutrition along with other minerals …
Research by Nelson Pea Navarro of the University of Costa Rica (UCR), has showed that some natural products can be substitutes for antibiotics in disease control of farmed shrimp. These natural alternatives can also increase production and maximise profits and…
The Gram positive bacteria Streptococcus agalactiae (GBS) is a cause of severe epidemics in fish farms. To decipher the genetic basis for the emergence of these highly virulent GBS strains and of their adaptation to fish, Isabelle Rosinski-Chupin et al have an…
The ability to produce physiologically critical LC-PUFA from dietary fatty acids differs greatly among teleost species, and is dependent on the possession and expression of fatty acyl desaturase and elongase genes. Atlantic salmon, as a result of a recently du…
David D. Kuhn et al Viginia Tech, have evaluated oysters cultured in a recirculating aquaculture system with zero water exchange for several months. Survival rates exceeded 99 per cent, and the oysters had growth comparable to or higher than oysters of similar…
Proper management of broodstock nutrition encompasses providing the right amounts of the proper specialised nutrients during the right developmental stages, writes Scott Snyder, Animal Nutritionist, and Thomas R. Zeigler, Senior Technical Advisor, Zeigler Bros…
Many believe commercial fisheries in Alaska, USA, are sustainability success stories, but ongoing socioeconomic problems across the state raise questions about how this sustainability is being defined andevaluated. Sustainable management of marine fisheries is…
A scientific team of the University of Barcelona have applied a new diagnostic tool to evaluate the health status of Iberian native fish species and the ecological status of aquatic ecosystems. The new non-lethal diagnostic tool, based on the analysis of haema…
This factsheet by the Southern Regional Aquaculture Center (SRAC) gives information on what feeds and feed ingredients should be used for channel catfish.
In a report from FAO entitled 'Edible insects: Future prospects for food and feed security', the potential is explored of using insects as a source of protein and other nutrients in dies for poultry and farmed fish.
Imagine having a daylong Thanksgiving feast every day for a month, then, only paupers rations the rest of the year. University of Washington researchers have discovered Dolly Varden, a kind of trout, eating just that way in Alaskas Chignik Lake watershed.
