Related items
Showing items related by metadata.
-
Book (series)A regional shellfish hatchery for the Wider Caribbean - Assessing its feasibility and sustainability
FAO Regional Technical Workshop 18-21 October 2010, Kingston, Jamaica
2011Also available in:
No results found.It is widely recognized that the development of aquaculture in the Wider Caribbean region is inhibited, in part, by the lack of technical expertise, infrastructure, capital investment and human resources. Furthermore, seed supply for native species relies, for the most part, on natural collection, subject to natural population abundance with wide yearly variations. This situation has led to the current trend of culturing more readily available exotic species, but with a potentially undesirable i mpact on the natural environment. The centralizing of resources available in the region into a shared facility has been recommended by several expert meetings over the past 20 years. The establishment of a regional hatchery facility, supporting sustainable aquaculture through the seed production of native molluscan species was discussed at the FAO workshop ¿Regional shellfish hatchery: A feasibility study¿ held in New Kingston, Jamaica, in October 2010, by representatives of Caribbean government s and experts in the field. Molluscan species are particularly targeted due to their culture potential in terms of known techniques, simple grow-out technology and low impact on surrounding environment. It is proposed that a regional molluscan hatchery would produce seed for sale and distribution to grow-out operations in the region as well as provide technical support for the research on new species. The current document summarizes the findings of the workshop and outlines four follow-up recomm endations on steps required for the successful implementation of a regional facility. The positive response of participating Caribbean governments demonstrates the current political will for sustainable aquaculture growth in the region, supported by several national plans including the Caribbean Regional Fisheries Mechanism Strategic Plan. -
Book (series)Conversion factors for processed queen conch to nominal weight/ Factores de conversión para el caracol reina procesado a peso nominal 2009
Also available in:
No results found.Queen conch (Strombus gigas) is one of the important fishery resources in the Caribbean in terms of its annual landings and its social and economic importance. Queen conch is an edible marine gastropod of the Caribbean region that has been listed in Appendix II of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), which allows international trade of the species only after certain conditions are met. An FAO FishCode STF*/OSPESCA** workshop held in Panama identified the need to be able to convert the different processing grades to nominal weight. Three countries (Dominican Republic, Honduras and Nicaragua) volunteered to participate in a field experiment to establish the conversion factors. This investigation resulted in the establishment of conversion rates for different processing grades per country. There were slight but significant differences between conversion factors for processing grades between countries, most likely related to different processing techniques used. Within this limitation, the following preliminary regional conversion factors are recommended: 100 percent fillet to nominal weight 16.4; 85 percent fillet to nominal weight 13.7; 50 percent fillet to nominal weight 9.46; dirty meat to nominal weight 5.7. -
Book (series)The hatchery culture of bivalves: a practical manual 2004Bivalve mollusc culture is an important and rapidly expanding sector of world aquaculture production, representing approximately 20% of this output at 14 million tonnes in 2000. The majority of production is from natural populations although increasingly stocks are approaching or have exceeded maximum sustainable yields. Enhancement of stocks through the capture and relaying of natural seed in both extensive and intensive forms of culture is common practice worldwide but the reliability of natur al recruitment can never be guaranteed and conflicts over the use of the coastal zone are becoming ever more pressing. A solution to meeting the seed requirements of the bivalve industry, applicable to the production of high unit value species such as clams, oysters and scallops, is hatchery culture. The production of seed through hatchery propagation accounts at the present time for only a small percentage of the total seed requirement but it is likely to become increasingly important as work continues to produce genetically selected strains with desirable characteristics suited to particular conditions. The advent of bivalve hatcheries was in the 1960s in Europe and the U.S. Since those early pioneering days knowledge of the biological requirements of the various species that predominate in worldwide aquaculture production and the technology by which to produce them has and continues to improve. This manual brings together the current state of knowledge in describing the v arious aspects of hatchery culture and production from acquisition of broodstock to the stage at which the seed are of sufficient size to transfer to sea-based growout. Focus is on intensive methodology in purpose built hatchery facilities rather than on more extensive methods of seed production in land-based pond systems. This manual is not intended as a scientific treatise on the subject. Rather, it is practical in nature providing the reader with an insight into what is required in the w ay of resources and details of how to handle and manage the various life history stages of bivalves in the hatchery production cycle.
Users also downloaded
Showing related downloaded files
No results found.