http://hdl.handle.net/1834/103 2013-05-23T17:22:55Z 2013-05-23T17:22:55Z IOTC http://hdl.handle.net/1834/41 2005-07-09T07:08:18Z 2000-01-01T00:00:00Z

Title: Calculation of the Nominal Catches of vessels Not Elsewhere Included (NEI) within the IOTC Area. Authors: IOTC Abstract: The acronym NEI (Not Elsewhere Included) has usually been used to record the catches by vessels or fleets which are not officially reported to the IOTC.

2000-01-01T00:00:00Z IOTC http://hdl.handle.net/1834/42 2011-08-09T12:42:53Z 2000-01-01T00:00:00Z

Title: Report from the WPB on the data situation for billfish. Authors: IOTC Abstract: The first catches of billfish recorded in the IOTC nominal catches (NC) database were made in 1970, by longline gear. Although catches of these species did occur before that year, they were reported aggregated as billfish NEI.

2000-01-01T00:00:00Z Chang, S.K. Liu, H.C. http://hdl.handle.net/1834/72 2008-11-27T09:56:58Z 2000-01-01T00:00:00Z

Title: Catch status of tropical tunas and swordfish by Taiwan deep sea tuna fishery in the Indian ocean in 1999. Authors: Chang, S.K.; Liu, H.C. Description: There were about 341 deep-sea longliners operating in the Indian Ocean (small longliners operating in the northeast Indian Ocean were not included) in 1999, about the same level to 1998. The total catch made by these longliners was roughly estimated as 99,000 MT, a decrease of about 11,000 MT from 1998. The drop of yellowfin tuna by 5,700 MT was the main cause, followed by decreases of bigeye tuna by 2,600 MT and swordfish by 2,100 MT. This decrease in catch might be due to the unfavorable fishing condition around the traditional fishing grounds in the Indian Ocean. In general, the total catch of tunas and billfishes was around 93,000-110,000 MT from 1992 to the present except the relatively high catch in 1993. 'Research Group' Overseas Fisheries Development Council, Taipei, Taiwan ; Institute of Oceanography, National Taiwan University, Taipei, Taiwan.

2000-01-01T00:00:00Z Chen, C.Y. http://hdl.handle.net/1834/55 2008-11-27T08:44:28Z 1998-01-01T00:00:00Z

Title: Title Stock assessment on the Indian Ocean albacore tuna. Authors: Chen, C.Y. Abstract: This paper deals with the CPUE trend and maximum sustainable yield (MSY) of Indian Ocean albacore tuna. The daily catch records of Taiwanese longliners operated in the Indian Ocean dating back to 1979 were used in this study. Deep longline techniques were introduced in the tuna fishery in the mid-1980s and an effort was made to segregate the statistics of regular longliners from those of deep longliners. A general linear model (GLM) was adopted to standardize the CPUE for data of both time periods, 1979- 1985 and 1985-1996. A surplus production model was employed to estimate its MSY and optimum effort (fopt), and the results revealed that, MSY=30.5x103 t; = 319 x 106 effective hooks.

1998-01-01T00:00:00Z