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| Registros recuperados: 63 | |
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| Pascual-alayon, P; Floch, Laurent; N'Gom, F; Dewals, P; Irie, D; Amatcha, Ah; Amande, M-j. |
| The document presents an overall summary of the fishing activities of the European and assimilated purse seine and bait boat fleets operating in the eastern Atlantic Ocean over the period 1991-2017. We describe the annual changes in fleet technical characteristics (carrying capacity, size), fishing effort (fishing and searching days), extent of fishing grounds, catches and nominal Catch per Unit Effort by species, as well as the average individual weight by species. Maps are also presented indicating the fishing effort distribution in the Atlantic, as well as the spatio-temporal distribution of European and assimilated purse seine catches in 2017 compared to previous years (2010-2016). |
| Tipo: Text |
Palavras-chave: Tuna fishery; Yellowfin; Skipjack; Purse seiners; Catch/effort; CPUE; Species composition; Size composition. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00490/60190/63533.pdf |
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| Rouyer, Tristan; Bonhommeau, Sylvain; Giordano, F; Wendling, B; Ellul, S; Ellul, G; Psaila, Ma; Deguara, S; Bernard, S; Kerzerho, V. |
| Tipo: Text |
Palavras-chave: Large atlantic bluefin tuna; Mediterranean; Malta; Electronic tagging; Farming cages; Purse seiners. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00484/59609/62626.pdf |
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| The number of purse seiners active in the Western Indian Ocean remained high during the first quarter of 1989, ranging from 49 in January to 48 in March. This represents a significant increase in the number of vessels over the same period last year when an average of 36 vessels was in operation. Excellent fishing results prevailed throughout the first quarter of this year. Catch rates reached a record high, for that period, of 26 MT/day compared to 18 MT/day for the same period last year. The proportion of yellow fin in the catch dropped from 58% in January to 36% in March, with a corresponding increase in the proportion of skipjack from 40% to 63%. This is unusual for this time of the year, when yellow fin is the predominant species in the catch. The... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries. |
| Ano: 1989 |
URL: http://hdl.handle.net/1834/5203 |
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| This volume of tuna statistics for the West Indian Ocean (WIO) is the second to be based on the "New tuna" program. It includes the figures for 1992 as well as 1993. Due to the necessity of rapidly publishing 1993 statistics only one volume has been produced for the whole year and not one for each quarter. In future the whole year and not one for each quarter. In future the system of publishing a Tuna Bulletin each quarter will be reverted to. Due to the inclusion of trips which started at the end of 1992 but which finished in early 1993 the 1992 total catch has been revised upwards from 273,852 MT. published in the last Tuna Bulletin to 278,218 MT. The initial estimate for the total WIO purse seine tuna catch for 1993 is 263,918 MT. However, this... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries. |
| Ano: 1993 |
URL: http://hdl.handle.net/1834/5171 |
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| Data used to generate the tables and figures presented here are based on daily catch and effort forms (1ogbooks') returned from fishing vessels which are licensed to fish in the Seychelles EEZ. Sometimes there is a delay in these being received at SFA, especially during and just after the second quarter of the year when most vessels are fishing in the Mozambique Channel. Readers should be aware that many of the figures presented here (especially the most recent) are subject to revision (usually upwards) as more data become available. The date upon which the SFA database was closed prior o the generation of the statistical tables is shown at the head of each table. Purse seiners Principal Points - The revised total purse seine tuna catch for the western... |
| Tipo: Other |
Palavras-chave: Catch statistics; Purse seiners; Tuna fisheries. |
| Ano: 1995 |
URL: http://hdl.handle.net/1834/5169 |
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| The number of purse seiners active in the western Indian Ocean average 41 during the fourth quarter compared to 49 vessels during the same period last year. Fishing activity was high during the first half of the year with a record of 54 vessels present in February and March. The overall fishing results for the year were not as good as those previously recorded in the last three years. Catch rates averaged 16MT/day compared to 18 MT/day in 1989 and 22 MT/day in 1988, attaining a similar level to results of 1986. This was due to poor fishing conditions during January to May causing several vessels to leave the Indian Ocean in June. However this situation changed as catch rates improved during the second half of the year, with exceptionally high yellow... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries. |
| Ano: 1990 |
URL: http://hdl.handle.net/1834/5207 |
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| The number of purse seiners active in the Western Indian Ocean peaked to an all times high for the first quarter of 1990 ranging from 50 in January to 53 in March. This represents an increase over the same period last year when an average of 48 vessels was in operation. Fishing results were rather poor throughout the first quarter of this year. Catch rates increased only slightly from a low of 8.18 mt/day in December 1989 to 16.7 mt/day in March 1990. The proportion of yellow fin in the catch however increased considerably from 39% in December to 67% in February 1990, with a corresponding decrease in the proportion of skipjack in the catch. This is usual for this time of the years when yellow fin is the predominant species. The fishing pattern was... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries. |
| Ano: 1990 |
URL: http://hdl.handle.net/1834/5210 |
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| The number of purse seiners active in the Western Indian Ocean during the fourth quarter of 1985 increased from 36 in October to 38 in December, about ten vessels less than in the fourth quarter of 1984. Fishing success during the fourth quarter of 1985 was similar to the third quarter, and slightly better than the fourth quarter last year. Since commercial purse seiner operations began in 1982, catch rates have been high during the first quarter, then have declined progressively during the second and third quarters due to weather conditions of the Inter-Monsoon and the Southeast Monsoon periods. This year, however, catch rates during the first quarter were low, due largely to bad weather, then remained at roughly the same level for the second quarter,... |
| Tipo: Other |
Palavras-chave: Purse seiners. |
| Ano: 1985 |
URL: http://hdl.handle.net/1834/5167 |
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| Data used to generate the tables and figures presented here are based on daily catch and effort forms (logbooks) returned from fishing vessels that are licensed to fish in the Seychelles EEZ and for purse seiners, as well as from data collected via the tuna sampling programme conducted during transhipment in Port Victoria. Sometimes there are delays in these being received at SFA, especially for longliners that often spend up to a year at sea. For purse seiners the delays are usually during and just after the second quarter of the year when most vessels are fishing in the Mozambique Channel and are not necessarily using Port Victoria for transhipment. Readers should note that many of the figures presented here are subject to revision (usually upwards) as... |
| Tipo: Other |
Palavras-chave: Tuna fisheries; Catch statistics; Purse seiners; Foreign fishing; Data. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/5183 |
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| Data used to generate the tables and figures presented here are based on daily catch and effort forms (logbooks) returned from fishing vessels that are licensed to fish in the Seychelles EEZ and for purse seiners, as well as from data collected via the tuna sampling programme conducted during transshipment in Port Victoria. Sometimes there are delays in these being received at SFA, especially for longliners that often spend up to a year at sea, and for purse seiners the delays are usually during and just after the second quarter of the year when most vessels are fishing in the Mozambique Channel and are not necessarily using Port Victoria for transshipment. |
| Tipo: Report |
Palavras-chave: Purse seiners; Tuna fisheries; Catch statistics; Longlining; Tuna; Fishery data. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/5308 |
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| Data used to generate the tables and figures presented here are based on daily catch and effort forms (logbooks) returned from fishing vessels that are licensed to fish in the Seychelles EEZ and for purse seiners, as well as from data collected via the tuna sampling programme conducted during transhipment in Port Victoria. Sometimes there are delays in these being received at SFA, especially for longliners that often spend up to a year at sea, and for purse seiners the delays are usually during and just after the second quarter of the year when most vessels are fishing in the Mozambique Channel and are not necessarily using Port Victoria for transhipment. Readers should note that many of the figures presented here are subject to revision (usually upwards)... |
| Tipo: Other |
Palavras-chave: Tuna fisheries; Purse seiners; Catch statistics. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/5187 |
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| The number of purse seiners active in the Western Indian Ocean during the third quarter of 1988 increased from 38 at the end of the second quarter to 43 in July, reaching a maximum of 46 in September. This represents a considerable increase in the number of active vessels compared to the same period last year when a maximum of 38 vessels were in operation in September. Overall catch rates increased from 19 MT/day during the second quarter of 1988 to 25 MT/day during this quarter, reaching the same level as in the previous year. The proportion of yellow fin dropped from 53% in July to 17% in September with a corresponding increase in skipjack catches. This fishing pattern follows the same trend set in previous years, as vessels fished around the Equator... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries. |
| Ano: 1988 |
URL: http://hdl.handle.net/1834/5181 |
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| Seychelles Fishing Authority. |
| The number of purse seiners active in the Western Indian Ocean during the third quarter of 1989 increased from 46 vessels in June to 48 in July reaching an all-time high of 51 in September. The highest number of vessels previously recorded for this fishery was 49, between December 1984 to February 1985, and in early 1989. During the same period last year a maximum of 46 vessels were in operation.Poor fishing results obtained during the second quarter continued throughout July and August, with daily catch rates averaging 11-13 MT. In September, however, fishing success improved considerably with catch rates rising to 26.5 MT/day, nearly reaching the level obtained (30 MT/day during the same period last year. Skipjack remained the predominant species in... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries. |
| Ano: 1989 |
URL: http://hdl.handle.net/1834/5201 |
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| The number of purse seiners active in the Western Indian Ocean during the second quarter of 1989, remained at 47 in April and May, dropping to 46 in June. This represents a significant increase in the number of vessels compared to same period last year, when an average of 38 vessels were in operation. Fishing results obtained during the second quarter were mediocre compared to the exceptionally high catches made at the beginning of the year. Record catch rates averaging 26 mt/day during the first quarter dropped from 20 mt/day in April to a mere 9 mt/day in May. These results are however not unusual for this time of the year. Daily catch rates for the second quarter averaged 16 mt/day, reaching the same level as in 1987, whereas 18 mt/day was reported... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries. |
| Ano: 1989 |
URL: http://hdl.handle.net/1834/5185 |
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| Data used to generate the Tables and Figures presented in this report are based on logbook returns from the fishing vessels. Readers should, therefore, be aware that figures presented in this report are likely to change in future publications of the Tuna Bulletin once all the data relating to the quarter being reported on becomes available. The initial estimate for the total WIO purse seine tuna catch for the first nine months of 1994 is 176,216 Mt. However, this figure may also be^ revised upwards when trips starting in the third quarter of 1994 and finishing in the fourth quarter are included in the next quarterly Tuna Bulletin of 1994. This compares with 203,797 Mt caught in the first nine months of 1993. Some 2,532 days were fished in the third quarter... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries. |
| Ano: 1994 |
URL: http://hdl.handle.net/1834/5176 |
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| Data used to generate the tables and figures presented here are based on daily catch and effort forms (logbooks) returned from fishing vessels which are licensed to fish in the Seychelles EEZ. Sometimes there is a delay in these being received at SFA, especially during and just after the second quarter of the year when most vessels are fishing in the Mozambique Channel. Readers should be aware that many of the figures presented here (especially the most recent) are subject to revision (usually upwards) as more data become available. The date upon which the SFA database was closed prior to the generation of the statistical tables is shown at the head of each table. Purse seiners Principal Points - The total purse seine tuna catch for the Western Indian... |
| Tipo: Other |
Palavras-chave: Purse seiners; Catch statistics; Tuna fisheries. |
| Ano: 1996 |
URL: http://hdl.handle.net/1834/5195 |
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| The number of purse seiners active in the Western Indian Ocean increased slightly from 42 at the end of the last quarter to 45 in September. Fishing results improved slightly in the third quarter, with the average catch rates increasing from 15.8 MT/day in the second quarter to an average of 19.0 MT/day in the third quarter. This represents a slight drop from the same period last year when catch rates averaged 22.0 MT per day; however, it is an improvement over the catch rate of 16.0 MT/day for the same period in 1989. The fishing pattern for the third quarter showed that fishing effort was concentrated between 5 degrees north and 5 degrees south of the Equator in the vicinity of the Northern sector of the Seychelles EEZ. This follows the same pattern as... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries. |
| Ano: 1991 |
URL: http://hdl.handle.net/1834/5208 |
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| The number of purse seiners active in the western Indian Ocean averaged 53 during the first quarter compared to 41 vessels during the same period last year. Fishing activity was high during the first half of the year with a record for the month of March of 55 licensed vessels. The fishing results for the first quarter were not as good as those previously recorded in the last three years, however there are still 28 logbooks outstanding at the time of publication. Catch rates averaged 14.6 MT/day compared to 22MT/day in 1991 and 26MT/day in 1990. The high number of vessels licensed during the first quarter can be attributed to increased number of licenses issued to French and Japanese vessles. 1992 has been a notably strong El Nino year, giving rise to a... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries; Catch statistics. |
| Ano: 1992 |
URL: http://hdl.handle.net/1834/5212 |
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| The number of purse seiners active in the Western Indian Ocean increased from a low of 41 at the end of the last quarter to 45 vessels in September. Fishing results improved slightly with daily catch rates for the third quarter averaging 22 MT, increasing from 17.7 MT/day in August to 31.5 MT/day in September. These results are considerably better than those for the same period last year when it averaged 16 MT/day. The fishing pattern for the third quarter showed that fishing effort was concentrated between 5 degrees north and 5 degrees south of the Equator in the vicinity of the Northern sector of the Seychelles EEZ. Fifty five percent of the third quarter catch was made up by skipjack tuna compared to 58% for the second quarter. This is partly due to... |
| Tipo: Other |
Palavras-chave: Purse seiners; Tuna fisheries. |
| Ano: 1990 |
URL: http://hdl.handle.net/1834/5174 |
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| Data used to generate the tables and figures presented here are based on daily catch and effort forms (logbooks) returned from fishing vessels which are licensed to fish in the Seychelles EEZ. Spmetimes there is a delay in these being received at SFA, especially during and just after the second quarter of the year when most vessels are fishing in the Mozambique Channel. Readers should be aware that many of the figures presented here (especially the most recent) are subject to revi¬sion (usually upwards) as more data become available. The date upon which the SFA database was closed prior to the generation of the statistical tables is shown at the head of each table. Purse seiners. PRINCIPAL POINTS: The total purse seine tuna catch for the Western Indian... |
| Tipo: Other |
Palavras-chave: Purse seiners; Catch statistics; Tuna fisheries. |
| Ano: 1999 |
URL: http://hdl.handle.net/1834/5197 |
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| Registros recuperados: 63 | |
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