7606

• UCREFRP Catalog Number: 7606
• Author: Negus, M. T., D. A. Belford and S. E. Colvin.
• Title: Long-term Retention of Fluorescent Pigment Marking of Chinook Salmon.
• USFW Year: 1990.
• USFW - Doc Type: St. Paul, MN.
• Copyright Material: NO

Table 1. Numbers of spray-marked and control chinook salmon
in spawning migrations from 1986 through 1989.
F = female, M = male, ? = sex unknown.

Year SDray-marked Control
1986 (age 2) 1 F 1 F, 1 ?
1987 (age 3) 0 F, 6 M 4 F, 5 M
1988 (age 4) 8 F, 3 M l7 F, 6 M
1989 (age 5) 0 2 F

Table 2. Location of fluorescent pigment granules on the
bodies of chinook salmon captured as adults during
spawning migrations. No notation of pigment
presence or absence was made on one female
(age 2+) and one male (age 4+).

Location of pigment granules
Body Caudal
Year Sex Eye Preopercle side peduncle
1987 (age 3) M X
1987 (age 3) M X
1987 (age 3) M no pigment present
1987 (age 3) M no pigment present
1987 (age 3+) M pigment present, location unknown
1987 (age 3+) M no pigment present
1988 (age 4+) M X
1988 (age 4+) M X
1988 (age 4+) F X
1988 (age 4+) F X X
1988 (age 4+) F X X X
1988 (age 4+) F X X
1988 (age 4+) F X X X X
1988 (age 4+) . F X
1988 (age 4+) F X
1988 (age 4+) F no pigment present

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