Comisión Interamericana Del Atún Tropical Inter-american Tropical Tuna Commission
نویسنده
چکیده
This paper presents overall scientific estimations on bycatch landings by species, or groups of species, carried out by the Spanish surface longline fleet targeting swordfish (Xiphias gladius) in the Pacific Ocean. The mean level of bycatch landed by the Spanish fleet from the beginning of the fishing activity in 1990 until the year 2005 accounted for 42.6% of the total weight landed (target species and bycatch combined). Some of the bycatch landed that are worthy of note include the group of large pelagic sharks, representing a mean percentage of 95.8% of the total bycatch weight landed, followed by the tuna group (2.3%), and lastly, the billfish species (family Istiophoridae) and other species with lower levels and minor economical importance. The preliminary overall estimations of incidental mortality rates of marine turtles and sea birds -species combinedcaught incidentally in Pacific regions indicate an overall mortality rate per hook of around 6.70291*10 and 3.71707*10, respectively.
منابع مشابه
Inter-american Tropical Tuna Commission Third Meeting of the Scientific Working Group Review of Stock Assessments Chairman’s Report (revised)
A1 Draft: The fishery for tunas and tuna-like fishes in the eastern Pacific Ocean in 2001, and outlook for 2002 A2 Draft: Status of yellowfin tuna in the eastern Pacific Ocean in 2001 and outlook for 2002 A3 Draft: Status of skipjack tuna in the eastern Pacific Ocean in 2001 and outlook for 2002 A4 Draft: Status of bigeye tuna in the eastern Pacific Ocean in 2001 and outlook for 2002 A5 Draft: ...
متن کاملInter-american Tropical Tuna Commission External Review of Iattc Bigeye Tuna Assessment
1. Background .......................................................................................................................................... 1 2. General topics....................................................................................................................................... 3 2.1. Data issues .........................................................................
متن کاملInter-american Tropical Tuna Commission Scientific Working Group 2 Meeting Review of Stock Assessments
AGENDA 1. Welcome, introductions, consideration of agenda 2. Review of stock assessments: a. Methods b. Species composition sampling progress c. Results i. Yellowfin ii. Skipjack iii. Bigeye iv. Bluefin (paper only) v. Blue marlin vi. Albacore (paper only) vii. Others 3. Ecosystem modeling 4. Summary and recommendations 5. Other business 6. Adjournment DOCUMENTS A1 The surface fishery for tunas...
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تاریخ انتشار 2007