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MeetingMeeting documentSharks caught by Malagasy longline in 2012 2013
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No results found.Madagascar started exploring longline fishery in 2007 by shifting from trawl gear to small longliners. The number of vessels, targeting tu and tu-like species in the IOTC area of competence, has been increasing. In 2012, Malagasy flag deployed 8 longliners less than 24 m off the east coast (Annexe1). Note that some of them are multigear, wherebery fishing vessels may target demersal resources and at othertimes they may target tu and tu-like species. The following results were obtained from the M alagasy observer program database and from pelagic species companies’ declarations. The trend of total declared catches decreased throughout recent years and ranged from 497 tons to 388 tons in 2010 and 2012, respectively. The decline of catches is due to the reduction of number of big vessels. Indeed, a significant declining trend in percentage of shark landings (from 17% to 13%) was observed over the period. This paper figured out that monthly effort ranged from 14,000 hooks deployed in April to 49,447 hooks deployed in October. Total catch was 388,361 tons which was composed of 44.66% tu, 25.38% billfishes, 13.24% sharks and 16.72% of others species. Sharks landed were composed mainly of mako shark (92.42%) and blue shark (6.84%) and their CPUEs’ were 143.5 Kg/1,000 hooks and 13.6 Kg/1,000 hooks, respectively. Two specimens of shortfin mako ranged from 212 to 258 cm FL were identified by observers on board. In the same way, 37 specimens of Blue shark ranged from 164 cm to 352 cm FL. This study showed some biological information of all observed species such as length, weight, sex, GSI maturity. Observers reported that Malagasy longliners still caught IOTC prohibited species such as bigeye thresher and thresher. -
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DocumentOther documentBillfishes caught in the Malagasy EEZ from 2011 to 2013 by the foreign longliners 2014
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Book (series)Technical studyA third assessment of global marine fisheries discards 2019
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No results found.This third update of FAO’s global discard estimate adopted the ‘fishery-by-fishery’ approach employed in the second discards assessment published in 2005. The update included publicly available discard data in the last 20 years to establish a baseline of a time series of global marine fisheries discards. This is essential for monitoring the status and trends of discard management, which is the first step of the ecosystem approach to fisheries management cycle. In addition, the study developed a new fisheries data table incorporating landings data from the FAO Global Capture Production dataset (FishStat J) from 2010 to 2014, which allocated the landings to over 2 000 fisheries worldwide. The current study estimated that the annual discards from global marine capture fisheries between 2010 and 2014 was 9.1 million tonnes (95% CI: 6.7 – 16.1 million tonnes). About 46 percent (4.2 million tonnes) of total annual discards were from bottom trawls that included otter trawls, shrimp trawls, pair bottom trawls, twin otter trawls and beam trawls. The study included a synthesis of estimates of bycatch and discards of endangered, threatened and protected (ETP) species. Substantial advances have been made in quantifying fisheries interactions with such species so as to make informed decisions on their protection. However, many challenges remain, especially for small-scale fisheries. The development of standardized data collection techniques, risk-based sampling and sharing of data across agencies and regions will help to identify management priorities and allow implementation and enforcement of mitigation measures. A review of previous research showed that discard practices were often related to a wide range of factors, so it is difficult to assess the effectiveness of fishery management actions on the amount and practice of discards. Many regulations are inconsistently enforced, and their implementation is often less strict than intended. Piecemeal approaches in many bycatch and discards management measures can result in unintended cross-taxa conflicts, where regulations designed to reduce bycatch and/or discards of one species or species group may increase bycatch and/or discards of another. Examination of approaches to accounting for and mitigating against pre-catch, post-capture and ghost fishing mortalities demonstrates that an understanding of the relative importance of factors affecting indirect fishing mortality is necessary for estimating total fishing-induced mortality and for designing and implementing mitigation measures. -
Poster, bannerPoster / banner / roll-up / folderThe bioavailability of cadmium and lead in soil and bioaccumulation in barley from a contaminated soil 2018
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DocumentOther documentChainsawing in the natural forests of Ghana
An assessment of the socio-economic impacts of the practice
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