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Marine Finfish : Offshore opportunities for artisanal aquaculture
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| Posted on 19/10/2009 (2290 reads) |
Stock, C.
Traditional cage aquaculture utilising basic floating net structures in protected coastal environments has long been a fundamental means of raising fish for the Asia-Pacific region. While this approach has provided success, it is also due for reassessment and improvement as near shore production sites become crowded and polluted and new technologies emerge that stand to benefit both the environment and fish farmers. Right; here Micropods of various sizes waiting to be positioned in the Puerto Lindo, Panama
Development of open ocean aquaculture has created opportunities to transfer and apply new technologies to established production methods. While commercial scale open ocean aquaculture operations are capital intensive and not realistic for the average family farmer, a strong argument can be made for the feasibility of using small submersible net pens designed for exposed conditions in artisanal applications by apply in low volume high density (LVHD) production methods. Two such examples of this equipment are the OCAT pen designed by the United Soy Board and Micropods engineered and produced by Ocean Farm Technologies, Inc. |
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Marine Finfish : Formulated feed for tiger grouper grow-out
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| Posted on 11/8/2009 (3257 reads) |
Rachmansyah, Usman, Palingg, N.N.
and Williams, K.
Tiger grouper, Epinephelus fuscoguttatus, is a carnivorous fish that grows faster than either humpback grouper (Cromileptes altivelis) or coral trout (Plectropomus spp). However, industry development of this fish has been faced with several challenges, paramount of which has been a lower market price of cultured fish compared to wild-caught tiger grouper. The reasons given by the buyers for the low price paid for cultured tiger grouper are that fish fed on commercial pelleted feeds have a different taste and relatively poor survival during transport from farm to market compared to wild fish. The validity of these claims has not been rigorously tested. An additional impediment to industry development has been the high and increasing cost of trash fish, which has been the traditional source of feed for culturing marine fish, including groupers. Photo: Figure 1. Manual mincing of trash fish, dry ingredient mix and oils. |
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Marine Finfish : WWF Seriola and Cobia Aquaculture Dialogue
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| Posted on 20/1/2009 (5344 reads) |
 Editors note: The article below is presented for information purposes only; NACA does not endorse individual aquaculture standards.
WWF will convene the inaugural meeting of the Seriola and Cobia Aquaculture Dialogue from 18-19, February 2009 in Seattle, Washington, in conjunction with the Aquaculture America conference. The main goal of the meeting will be to begin creating the worlds first set of measurable, performance-based standards for the responsible farming of cobia, Seriola rivoliana and Seriola quinqueradiata produced in the Americas region. The standards will be designed to minimize the key environmental and social impacts related to this type of farming.
The first day of the meeting will be dedicated to identifying the key environmental and social impacts related to cobia and Seriola farming. The focus of the second day will be creating the guiding principles for addressing each impact, as well as the goals and objectives that will be the basis for how the Dialogue operates. At future meetings, participants will identify criteria (the areas to focus on to address each impact) and indicators (what to measure to determine the extent of each impact). All of this information will be the framework for developing performance-based standards.
Also at the February meeting, participants will choose people to serve on the Steering Committee that will manage the Dialogue process. Last, they will identify research that needs to be done to address any areas of disagreement between Dialogue participants and fill information gaps related to this type of aquaculture.
If you would like to attend the meeting, which will be at the Sheraton Seattle Hotel, please send a message to paul.holthus at hotmail.com by January 30, 2009.
The Dialogue is one of eight WWF-initiated Dialogues underway globally. Standards also are being developed for salmon, trout, tilapia, shrimp, pangasius, abalone and molluscs (clams, scallops, oysters and mussels). For more information about the Dialogues, go to www.worldwildlife.org/aquadialogues. |
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Marine Finfish : Mariculture development opportunities in SE Sulawesi, Indonesia
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| Posted on 13/1/2009 (5332 reads) |
By La Ode M. Aslan, Hotman Hutauruk, Armen Zulham, Irwan Effendy, Mhummaed Atid, Michael Phillips, Lars Olsen, Brendan Larkin, Sena S De Silva and Geoff Gooley.
The island of Sulawesi, Indonesia, is recognized by the government of Indonesia as a major area for development of mariculture. Within Sulawesi, one of the least developed areas is SE Sulawesi Province, which consists of twelve districts, comprising ten regencies and two towns, including Kendari which is the major population and commercial centre. Photo: Typical cage farms in Kendari Bay, SE Sulawesi. |
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Marine Finfish : Use of fish in animal feeds: a fresh perspective
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| Posted on 7/11/2008 (8843 reads) |
Aquaculture is often condemned by many lobby groups because it uses about 43 percent of global fish meal production and 85 percent of fish oil. Industrial production of fish meal and fish oil are based on what is termed as a reduction process, using smaller sized fish species commonly termed trash fish, although low-value fish is probably a more accurate description. In essence, nearly 25 percent of the global marine fish catch is used for these purposes, predominantly consisting of species such as the Peruvian anchovy, capelin, menhaden and sand eel, amongst others.
There is a growing view that the fish resources used in the reduction industry should be channeled for feeding humans directly in developing countries; an ethical stance that is gaining increasing momentum. An alternate interpretation of this view is that valuable protein sources should not be used to convert to higher cost proteins that are inaccessible to the poor. |
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