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Annual Report of the U.S. Atlantic Salmon Assessment Committee Report No 17-2004 Activities
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2005
[PDF-1.66 MB]
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Description:Total return to USA rivers was 1,635; this is the sum of documented returns to traps and returns estimated using redd counts on selected Maine rivers. Adult salmon returns to USA rivers with traps or weirs totaled 1,566 fish in 2004, 12% more than observed in 2003. Eighty-two adult (90% CI = 60 - 113) fish were estimated to return to the rivers with Endangered populations, the 4th lowest for the 1991-2004 time-series. Most returns occurred in Maine, with the Penobscot River accounting for 81% of the total return. Overall, 19% of the adult returns to the USA were 1SW salmon and 81% were MSW salmon. Most (89%) returns were of hatchery smolt origin and the balance (11%) originated from either natural reproduction or hatchery fry. A total of 15,176,100 juvenile salmon (fry, parr, and smolts) and 4,311 mature adults were stocked. Eggs for USA hatchery programs were taken from 449 sea-run females, 3,074 captive/domestic females, and 95 female kelts. The number of females (3,618) contributing was less than in 2003 (3,705); and total egg take (20,486,000) was greater than that of 2003 (19,564,000). About 574,560 salmon carrying a variety of marks and/or tags (e.g., PIT tags, visual implant elastomer tags, Petersen disc tags, fin clips etc.) were released in USA waters in 2004. Production of farmed salmon in Maine was 9,121 metric tonnes in 2004.
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Rights Information:Public Domain
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Compliance:Submitted
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