IN BRIEF - Threats of Aquaculture on African ecology
Friday, November 10, 2017
Fish farming is a method that started showing its negative impact in recent years. Invasive species introduced by aquaculture businesses are invading and changing the ecosystem of places like the Okavango delta, Lake Malawi and Lake Victoria.
Is aquaculture causing more harm than solving fishing crisis?
Fish farming was introduced to Africa by the previous colonial authorities as a way to improve the production in the field of fisheries and accommodate to the growing population’s need. However, economic growth does not always resonate with suitable mindful techniques and environmental wellbeing. Although fish farms are producing an important amount of goods to cater to the needs of the population, their owners are generally unaware of the ecological drawbacks that their business is entailing. These farms are indeed contributing to the wellbeing of the communities benefiting from them but the negative side of the business shouldn’t be overlooked. Raising awareness about the harmful side to introducing certain types of fish should be a priority in this field.
Certain species are said to grow faster than others but according to specialists like Martin Genner “there is zero evidence that Nile tilapia will grow faster or have a better food conversion efficiency than local tilapia species when kept in the same conditions.” He also added “everyone is under the illusion that their problems will be solved by having a different fish species.” Aquaculture has a good potential within the continent if it is wisely and smartly applied.
DG Maritime Affairs and Fisheries is organising a selection procedure with a view to recruiting temporary agents at AD8 level to work in the field of a) fisheries science and management and b) fisheries control and inspection.
The expected publication date for the selection notice is November 2018. The selection notice will be published on the EPSO website.
Please note that until the publication of the selection notice we will not answer any questions concerning this procedure.
Falmouth’s multi-year rotational aquaculture licensing plan is taking shape as a pilot program. While multiple committees continue to discuss the plan, a recent memo outlined its first set of findings for site selection, highlighting three potential sites off Washburn Island and one in Lower Great Pond as ideal for aquaculture.
Last year, consultant Anastasia K. Karplus of Science Wares Inc. drafted the initial plan with input from town staff and a citizens working group.
In a memo submitted to the town last month, consultant John W. Brawley wrote that the plan is meant to help restore several of Falmouth’s estuarine systems, with minimal risks associated with the multiple uses of Falmouth’s coastal zone, through the denitrifying effects of shellfish aquaculture.
Though often overlooked, baitfish are critical to recreational and commercial fishermen both as bait and as a foundation species in the food chain. Here's more information about the five most common and important species found in the waters off New Jersey:
Atlantic menhaden are commonly referred to as menhaden or bunker. Historically, these fish were ground up and used as fertilizer for crops or animal feed. According to National Geographic, the menhaden fishery is the largest fishery on the east coast of the United States.
Commercially, the menhaden fishery is made up of a reduction fishery and a bait fishery. The majority of menhaden are fished for reduction, which reduces the menhaden into a fish oil supplement. The remaining commercially fished menhaden are used as bait for the blue crab fishery and for larger fish such as striped bass, weakfish, bluefish and cod.
Fishery management seems complicated, but it has nothing on offshore wind. The Bureau of Ocean Energy Management, its state-by-state task forces, and each state’s environmental and energy regulators are working simultaneously, yet often with no clear direction, except to build wind farms. It’s challenging, at best, to ensure offshore developments properly account for effects on fishing businesses and communities that depend on sound, science-based management.
While the council process is complex, fishermen have been learning since 1976 how to participate, generally constructively. We don’t have the luxury of decades to learn to deal with offshore wind.
States are adopting lofty near-term offshore wind goals: 1,600 megawatts in Massachusetts, 100 for Rhode Island, 2,400 for New York, and 3,500 for New Jersey, while Maryland and Virginia aim to generate 25 percent and 15 percent of their energy from renewables. The Massachusetts Legislature has been looking to increase the commonwealth’s renewable targets. State-based processes control the energy markets through procurement requirements, tax credits, Coastal Zone Management Act consistency and other efforts. To achieve these goals, the Bureau of Ocean Energy Management is quickly granting huge offshore lease areas with very limited fisheries protections.
NEW CASTLE - White Dog Labs (WDL) announced today that it has signed a collaboration agreement with Midwest Renewable Energy (MRE) and will locate its first ProTyton plant within MRE’s ethanol plant in Sutherland NE. The ProTyton plant will initially produce 3,000 metric tons/year of ProTyton with shipments expected in Q4 2019. The plant will expand to 30,000 tons/year as early as 2021.
WDL has developed and scaled up ProTyton, a Single Cell Protein ingredient that exhibits upwards of 85wt% crude protein and over 40wt% essential amino acids. The product is highly digestible, performs well in multiple aquaculture diets, and demonstrated health benefits beyond nutrition. Independent testing demonstrated that ProTyton can counter Early Mortality Syndrome in shrimp, and its inclusion in Atlantic salmon feed reduces the overall cost of diets while maintaining performance. ProTyton fermentation is a simple anaerobic process that is highly similar to ethanol fermentation, which allows straightforward implementation by ethanol plants of ProTyton production.
Canada will adopt an area-based management approach to aquaculture that would include identifying appropriate geographic sites for fish farms and maximum densities, Federal Fisheries Minister Jonathan Wilkinson has announced.
The government is also embarking on an economic technology feasibility status study for closed containment aquaculture, said Wilkinson, at the launch of the International Year of the Salmon in Vancouver.
“In the coming weeks and months you will see more on wild salmon and on issues impacting wild salmon including, aquaculture,” said Wilkinson.
SEAPA has been making its innovative oyster baskets in Adelaide, South Australia since 1998 but has grown significantly in the past three years following strong sales in the United States and France, where it now has offices.
In this time SEAPA’s exports have grown from 25 per cent to 75 per cent of its total business and this month earned it an agribusiness award at the 2018 South Australian Export Awards.
SEAPA’s baskets were originally designed for adjustable long line Pacific Oyster farming in Australia, where most oysters are sold in a half shell, but in the past five years new models of the baskets have been adapted so they can be retrofitted to different farming techniques, such as the French method or the increasingly prevalent sub-tidal technique in deeper waters.
WICHITA FALLS - The new fish cleaning station at Lake Wichita is paid for fully by donations and grants, which is part of the reason it's being installed.
"We still have a lot of work to do to get the lake fixed and to make it a great fishery again but you do it when the grant comes in," Texas Parks and Wildlife district supervisor Tom Lang said. "The money will go bad but the project won't. Let's go ahead and get those funds spent and put in what we can, when we can."
And, on top of providing people with a convenient place to clean their catch, it's going to be a place to swap stories or maybe tall fish tales.
PADUCAH - The state of Kentucky has awarded a contract for the establishment of a fish house to expand the market for an invasive species, Asian carp.
Gov. Matt Bevin's office said in a news release Tuesday that Kentucky Fish Center LLC of Wickliffe owned by Angie Yu won the contract. Asian carp caught in the state will be sold in daily auctions overseen by the Kentucky Department of Fish and Wildlife Resources.
Albacore fishery reopened Spain
The Ministry of Agriculture, Fisheries and Food has authorized the reopening of the fishery for albacore tuna (Thunnus alalunga) in the Atlantic Ocean from 00:00 on October 11 thanks to an exchange of quotas with Portugal.