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DocumentOther documentEvaluating harvest control rules for bigeye tuna (Thunnus obesus) and yellowfin tuna (Thunnus albacares) fisheries in the Indian Ocean 2013
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No results found.Bigeye tu (Thunnus obesus) and yellowfin tu (Thunnus albacares) support two of the most important fisheries in the Indian Ocean. However, there is little research evaluating harvest control rules (HCRs) for their magement. In this study we evaluated four HCRs, ‘knife-edged’, ‘linear’, ‘convex’, and ‘concave’, for these two species. These four HCRs defined magement rules for how annual fishing mortality should be adjusted based on perceived stock status. Fishing mortality was adjusted linearly, c onvexly and concavely for the ‘linear’, ‘convex’, and ‘concave’ HCRs, respectively when the current spawning stock biomass (SSB) was between the limit and target SSB-based biological reference points (BRPs). Two age-structured operating models were developed to simulate fisheries maged under these HCRs for a 25-year magement period. Implementation and process errors, and uncertainties in key fisheries parameters were considered as sources of uncertainty in this study. All four HCRs were found to be effective in driving both stocks to the status defined by maximum sustaible yield-based BRPs. The ‘knife-edged’ HCR, which has constant fishing mortality but switches fishing mortality to 0 when stock biomass is below the limit SSB-based BRP, led to relatively poor performance. Our results indicate that a simulation study is needed to evaluate the performance of BRPs and HCRs in maging bigeye tu and yellowfin tu fisheries in the Indian Ocean. -
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Book (series)Technical reportJoint FAO/WHO Expert Meeting on Tropane Alkaloids
30 March – 3 April 2020
2020Also available in:
No results found.Between March and April 2019, many cases of suspected food poisoning were reported by health care workers in the Karamoja region of the Republic of Uganda. Consumption of food products that had high levels of tropane alkaloids was identified as the cause. This group of compounds occur in several plant genera that belong to the Solanaceae family and can contaminate staples like cereals and grains. Given the absence of international guidance and regulations, a Joint FAO/WHO Expert Meeting on Tropane Alkaloids was convened remotely between 30 March – 3 April 2020. This publication captures the discussions of the expert meeting and provides risks assessments of tropane alkaloids (hyoscyamine and scopolamine) as well as recommendations outlining appropriate risk management options. -
Book (series)YearbookWorld Food and Agriculture – Statistical Yearbook 2023 2023
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No results found.This publication offers a synthesis of the major factors at play in the global food and agricultural landscape. Statistics are presented in four thematic chapters, covering the economic importance of agricultural activities, inputs, outputs and factors of production, their implications for food security and nutrition and their impacts on the environment. The Yearbook is meant to constitute a primary tool for policymakers, researchers and analysts, as well as the general public interested in the past, present and future path of food and agriculture. -
MeetingMeeting documentERYTHROSINE
Residue Monograph prepared by the meeting of the Joint FAO/WHO Expert Committee on Food Additives. (JECFA), 86th meeting, 12-21 June 2018
2019Also available in:
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