U.S. Dept Commerce/NOAA/NMFS/NWFSC/Publications
NOAA-NMFS-NWFSC TM-31: Data Collection -- Groundfish
Table 4.5.
Number of age structures that have been collected for rockfish and flatfish species
as part of the biological sampling program in California, 1955-93. a
| Rockfishb | Flatfish | |||||||
| Year | Widow | Yellowtail | Chilipepper | Bocaccio | Dover sole | English sole | Petrale sole | Rex sole |
| 1955-79 | 1,221 | 753 | 5,406 | 4,478 | 4,242 | 545 | 431 | 3 |
| 1980 | 727 | 133 | 1,632 | 1790 | 1,546 | 122 | 110 | 8 |
| 1981 | 1,677 | 174 | 955 | 1,356 | 1,048 | 90 | 114 | 3 |
| 1982 | 4,069 | 348 | 2,217 | 2,687 | 1,048 | 90 | 83 | 0 |
| 1983 | 2,110 | 372 | 1,463 | 1,685 | 1,578 | 79 | 64 | 0 |
| 1984 | 3,076 | 865 | 3,898 | 2,721 | 580 | 54 | 48 | 0 |
| 1985 | 3,115 | 639 | 6,769 | 1,992 | 1,270 | 78 | 47 | 0 |
| 1986 | 2,852 | 699 | 1,987 | 4,300 | 433 | 64 | 44 | 0 |
| 1987 | 3,014 | 250 | 3,055 | 3,400 | 1,201 | 51 | 35 | 0 |
| 1988 | 2,309 | 322 | 2,630 | 2,590 | 993 | 10 | 18 | 0 |
| 1989 | 2,783 | 701 | 2,500 | 2,230 | 1,154 | 9 | 18 | 0 |
| 1990 | 3,388 | 435 | 5,490 | 2,900 | 963 | 1 | 6 | 0 |
| 1991 | 5,232 | 618 | 8,000 | 3,150 | 1,722 | 0 | 0 | 0 |
| 1992 | 4,756 | 686 | 5,000 | 3,302 | 1,218 | 0 | 0 | 0 |
| 1993 | 3,850 | 259 | 4,796 | 1,620 | 1,150 | 0 | 0 | 0 |
| 1994 | 1,091 | 356 | 2,243 | 628 | 2,794 | 0 | 0 | 0 |
| Total | 45,270 | 7,610 | 58,041 | 40,829 | 22,940 | 1,193 | 1,018 | 14 |
aFigures presented in the table represent the number of age structures (one structure represents one fish specimen) that have been collected for rockfish and flatfish species; however, not all samples have been, or are even currently planned to be, examined for age determination. The figures for the number of samples are approximate only.
bAge structure samples for bank and darkblotched rockfish have also been collected by the California Department of Fish and Game; however, the number of specimens for each of these species is not available at this time.