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|Title: ||CPUE standardization of striped marlin ( Tetrapterus audax ) caught by Taiwanese longline fishery in the Indian Ocean for 1980 to 2010|
|Authors: ||Sheng-Ping Wang;Tom Nishida|
|Issue Date: ||2017-03-10T01:06:29Z
|Publisher: ||The tenth session of the IOTC Working Party on Billfish (WPB), Indian Ocean Tuna Commission (IOTC)|
|Abstract: ||ABSTRACT:Since striped marlin are bycatch specie of Taiwanese lognline fleet, large amount
of zero catches are recorded from Taiwanese longline fleet. Therefore, this study
attempts to the standardize CPUE of striped marlin caught by Taiwanese longline fleet
in the Indian Ocean using delta-lognormal GLM model. The results indicate that the
area-specific standardized CPUE in the northern Indian Ocean (north of 10°S) reveal
different trends with those in the southern Indian Ocean (south of 10°S). Standardized
CPUEs in the northern Indian Ocean generally reveal decline trends during 1980s.
The standardized CPUEs in the southern Indian Ocean generally reveal increasing
trends during 1980 to 1995 and gradually decreased thereafter. In both of northern and
southern Indian Oceans, the standardized CPUEs slightly increased in 2010. Although
two CPUE peaks are observed in around 1985 and 1995, the area-aggregated
standardized CPUE generally reveals a decline trend since 1980.
|Appears in Collections:||[環境生物與漁業科學學系] 演講及研討會|
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