1.College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;2.National Engineering Research Center for Oceanic Fisheries, Shanghai 201306,China;3.Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education,Shanghai 201306, China;4.College of Food Science and Technology,Shanghai Ocean University,Shanghai 201306,China
Abstract: The catch per unit effort(CPUE)including catch per hour(CH)and catch per unit sweeping area (CPUA)and their impacting factors were evaluated in Antarctic krill Euphausia superba fishery in Livingston Island during fall-winter of 2012 based on the catch data collected by the Antarctic krill fishery observers.The results showed that the two fishing indicators were found to range from 0 to 84.0 t/h in CH and from 0 to 15.0×103t/km2in CPUA,with average CH of 10.0 t/h and average CPUA of 4.7×103t/km2.The main fishing ground was found in the western Livingston Island,and the higher abundance of Antarctic krill was observed from 8:00 to 16:00, while the other time was not the optimal fishing time.About half of fishing operation(46.2%)was found at sea surface temperature from-0.4 to-0.2℃ and the trawling(43.4%)was carried out at depth from 40 m to 60 m, the predominant fishing ground in the shallow area at depth of below 100 m.
2013, Vol. 28 
