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Fishmeal-Free Feeds for Hybrid Tilapia
A series of experiments showed that fishmeal is not an essential ingredient in tilapia feeds and that plant protein-based diets can yield results similar to those obtained with diets containing 10 per cent fishmeal, write Nathan Gur and Guy Rubinstein,...
Hypoxia and Acidification Have Additive and Synergistic Negative Effects on the Growth, Survival, and Metamorphosis of Early Life Stage Bivalves
Low oxygen zones in coastal and open ocean ecosystems have expanded in recent decades, a trend that will accelerate with climatic warming. Christopher J. Gobler et al, Stony Brook University, US, experimentally assessed the consequences of hypoxic and...
Fisheries in Transition: Food and Nutrition Security Implications for the Global South
Fisheries and fish supply are undergoing a fundamental structural transition, as indicated by a ten country analysis. Aquaculture now provides around half the fish for direct human consumption and is set to grow further, but capture fisheries continue...
Overview of Chile's Fisheries and Aquaculture Sector - February 2014
This article presents a brief summary of Chile's fisheries and aquaculture sectors. It also addresses the main institutions and guilds since the time when there were no regulations until now, where overfishing has lead to the need for regulations through...
Atlantic Cod Actively Avoid CO2 and Predator Odour, Even After Long-term CO2 Exposure
The rising atmospheric CO2 level is continuously driving the dissolution of more CO2 into the oceans, and some emission scenarios project that the surface waters may reach 1000 ?atm by the end of the century, write Fredrik Jutfelt and Maria Hedgärde,...
Salt Stratification Determines the Fate of Fish Stocks in the Baltic Sea
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...
Elevated CO2 Affects Embryonic Development and Larval Phototaxis in a Temperate Marine Fish
As an effect of anthropogenic CO2 emissions, the chemistry of the world’s oceans is changing. Understanding how this will affect marine organisms and ecosystems are critical in predicting the impacts of this ongoing ocean acidi?cation, write Elisabet...
Gambia Fisheries Sector: Trade, Value Addition and Social Inclusiveness - with a Focus on Women
This report from the United Nations conference on trade and development looks at trade, value addition and social inclusiveness in the Gambian fisheries sector, with a focus on women....
Early Exposure of Bay Scallops to High CO2 Causes a Decrease in Larval Shell Growth
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...
Developing Ultraviolet Illumination of Gillnets as a Method to Reduce Sea Turtle Bycatch
Fisheries bycatch of marine animals has been linked to population declines of multiple species, including many sea turtles. John Wang et al, University of Hawaii, examined the effectiveness of illuminating gillnets with ultraviolet (UV) light-emitting...
Influence of Food Supply on the Response of Olympia Oyster Larvae to Ocean Acidification
Increases in atmospheric carbon dioxide drive accompanying changes in the marine carbonate system as carbon dioxide enters seawater and alters ocean pH. As such changes do not occur in isolation, and other environmental factors have the potential to modulate...
Strategic Review of African Aquaculture Feeds
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...
Adjusting Water Discharge Can Boost Salmon Productivity
By adjusting water discharges in ways designed to boost salmon productivity, officials at a dam in central Washington were able to more than triple the numbers of juvenile salmon downstream of the dam over a 30-year period, according to a study published...
Ocean Acidification and Responses to Predators: Can Sensory Redundancy Reduce the Apparent Impacts of Elevated CO2 on Fish?
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...
Current Fishery Statistics of the United States 2012
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....
 
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