Regional Data Gap-Analysis for Component 2 (Crustacean) for SWIOFP: Proceedings of the Regional Workshop for Component 2 of SWIOFP, 20th –22th April 2009, Oceanographic Research Institute, Durban, South Africa.
During the first year of SWIOFP, all activities in Component 2 (Crustaceans) were geared towards developing a strategic review of existing data and past research, as a precursor for the development and budgeting of future crustacean projects. Activities took place at 3 levels – national data gap-analyses by 5 countries (South Africa, Mozambique, Tanzania, Kenya and Madagascar); integration of the national analyses into a regional analysis at a workshop held at the Oceanographic Research Institute (ORI) in Durban (South Africa); and drafting of research proposals for budgeting purposes. Each of the 5 countries produced a national data gap-analysis and needs analysis for Component 2, using a pre-designed template which requested information at species and fisheries levels, metadata of existing datasets, and a catalogue of published and unpublished literature. A prioritization process to select crustacean species and fisheries for SWIOFP projects resulted in the identification of 30 species and 22 fisheries. The 30 species were further categorized into 3 groups, based on the data to be collected, i.e.: level 1 = presence/absence and weight of catch; 2 = 1 + size composition, general biological information; and 3 = 2 + genetic samples / migrations. For deep-water crustaceans, the langoustines Metanephrops mosambicus, M. andamanicus and Nephropsis stewarti were identified at level 3, as were the prawns Haliporoides triarthrus, Aristaeomorpha foliacea and Aristeus antennatus and the spiny lobster Palinurus delagoae (barbarae?). All of these species support deep-water trawl or trap-fisheries, and are of sub-regional or regional importance. A further 12 deep-water prawn, lobster, and crab species were rated at information levels 1 and 2 - their distribution, abundance, and fisheries potential are weakly known in the region, and exploratory surveys are required to determine fisheries potential. Five species of shallow-water penaeid prawns were selected by all 5 countries, and Penaeus indicus, P. monodon and Metapenaeus monoceros were rated at information level 3. These penaeids are well-known in the region, supporting large trawl fisheries in Mozambique and Madagascar, and smaller ones in South Africa, Tanzania and Kenya. SWIOFP research on this group intends to focus on stock identity (i.e. are stocks shared between countries or local) and on the reduction of unwanted bycatches through testing and implementing of bycatch reduction- and turtle excluder devices (BRDs and TEDs). Two shallow-water spiny lobster species, Panulirus homarus and P. ornatus, were rated at level 3 – these 2 species will be the first to undergo genetic population studies to determine stock identity of shallow-water lobster taxa over a wide geographical scale in the WIO. Twenty-two fisheries that catch crustaceans as target or bycatch species were identified, and 14 of these were categorized as industrial (i.e. off-shore, sea-going vessels, traps or bottom trawls, modern navigation equipment) and fall within the scope of SWIOFP. Extensive databases are available for some of these fisheries in South Africa and Mozambique, with some in Madagascar, but not in Tanzania and Kenya. The metadata listed (a total of 49 distinct datasets) contained information on historical catches and bycatches, species composition, fishing gear and effort, and some biological information.
| Main Authors: | , , , , , , , , |
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| Format: | Report biblioteca |
| Language: | English |
| Published: |
South West Indian Ocean Fisheries Project
2009
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| Subjects: | Crustacean fisheries, Species diversity, Catching methods, Data collections, |
| Online Access: | http://hdl.handle.net/1834/7368 |
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| Summary: | During the first year of SWIOFP, all activities in Component 2 (Crustaceans) were geared towards developing a strategic review of existing data and past research, as a precursor for the development and budgeting of future crustacean projects. Activities took place at 3 levels – national data gap-analyses by 5 countries (South Africa, Mozambique, Tanzania, Kenya and Madagascar); integration of the national analyses into a regional analysis at a workshop held at the Oceanographic Research Institute (ORI) in Durban (South Africa); and drafting of research proposals for budgeting purposes. Each of the 5 countries produced a national data gap-analysis and needs analysis for Component 2, using a pre-designed template which requested information at species and fisheries levels, metadata of existing datasets, and a catalogue of published and unpublished literature. A prioritization process to select crustacean species and fisheries for SWIOFP projects resulted in the identification of 30 species and 22 fisheries. The 30 species were further categorized into 3 groups, based on the data to be collected, i.e.: level 1 = presence/absence and weight of catch; 2 = 1 + size composition, general biological information; and 3 = 2 + genetic samples / migrations. For deep-water crustaceans, the langoustines Metanephrops mosambicus, M. andamanicus and Nephropsis stewarti were identified at level 3, as were the prawns Haliporoides triarthrus, Aristaeomorpha foliacea and Aristeus antennatus and the spiny lobster Palinurus delagoae (barbarae?). All of these species support deep-water trawl or trap-fisheries, and are of sub-regional or regional importance. A further 12 deep-water prawn, lobster, and crab species were rated at information levels 1 and 2 - their distribution, abundance, and fisheries potential are weakly known in the region, and exploratory surveys are required to determine fisheries potential. Five species of shallow-water penaeid prawns were selected by all 5 countries, and Penaeus indicus, P. monodon and Metapenaeus monoceros were rated at information level 3. These penaeids are well-known in the region, supporting large trawl fisheries in Mozambique and Madagascar, and smaller ones in South Africa, Tanzania and Kenya. SWIOFP research on this group intends to focus on stock identity (i.e. are stocks shared between countries or local) and on the reduction of unwanted bycatches through testing and implementing of bycatch reduction- and turtle excluder devices (BRDs and TEDs). Two shallow-water spiny lobster species, Panulirus homarus and P. ornatus, were rated at level 3 – these 2 species will be the first to undergo genetic population studies to determine stock identity of shallow-water lobster taxa over a wide geographical scale in the WIO. Twenty-two fisheries that catch crustaceans as target or bycatch species were identified, and 14 of these were categorized as industrial (i.e. off-shore, sea-going vessels, traps or bottom trawls, modern navigation equipment) and fall within the scope of SWIOFP. Extensive databases are available for some of these fisheries in South Africa and Mozambique, with some in Madagascar, but not in Tanzania and Kenya. The metadata listed (a total of 49 distinct datasets) contained information on historical catches and bycatches, species composition, fishing gear and effort, and some biological information. |
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