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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...
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...
Evaluation of Growth Performance, Feed Utilization Efficiency and Survival Rate of Juvenile Nile Tilapia, Reared at Different Water Temperature
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....
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...
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...
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...
Ingested Plastic Transfers Hazardous Chemicals to Fish and Induces Hepatic Stress
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...
Experimental and Natural Warming Elevates Mercury Concentrations in Estuarine Fish
Marine food webs are the most important link between the global contaminant, methylmercury (MeHg), and human exposure through consumption of seafood. Jennifer A. Dijkstra et al, Wells National Estuarine Research Reserve, US, look at how warming temperatures...
Evaluating Social and Ecological Vulnerability of Coral Reef Fisheries to Climate Change
There is an increasing need to evaluate the links between the social and ecological dimensions of human vulnerability to climate change. Joshua E. Cinner et al, James Cook University, Australia, use an empirical case study of 12 coastal communities and...
Transcriptomic Characterization of Cold Acclimation in Larval Zebrafish
Temperature is one of key environmental parameters that affect the whole life of fishes and an increasing number of studies have been directed towards understanding the mechanisms of cold acclimation in fish....
Behavioural Disturbances in a Temperate Fish Exposed to Sustained High-CO2 Levels
As atmospheric CO2 levels rise, the CO2 concentration in ocean surface waters increases through a process commonly referred to as ocean acidification. Recently, surprising behavioural modifications have been detected in the early life stages of tropical...
Aquatic Weed Management: Herbicide Safety, Technology, Application Techniques
This factsheet by the Southern Regional Aquaculture Center (SRAC) gives information on aquatic weed management. Specifically, the document looks at herbicide safety, technology and application techniques....
Fertilizing Fish Ponds
This factsheet by the Southern Regional Aquaculture Center (SRAC) gives information on fertilizing fish ponds....
 
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