CalCOFI Reports, Vol. 27, 1986 - California Cooperative Oceanic ...
CalCOFI Reports, Vol. 27, 1986 - California Cooperative Oceanic ...
CalCOFI Reports, Vol. 27, 1986 - California Cooperative Oceanic ...
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WOLF AND SMITH: MAGNITUDE OF SARDINE SPAWNING BIOMASS<strong>CalCOFI</strong> Rep., <strong>Vol</strong>. XXVII, <strong>1986</strong>TABLE 2Pacific Sardine Egg Sample Frequency Distributions at Different Levels of Spawning BiomassaNet types and years#/IO m2CalVET CF&G 2-m 1 -m 0.5-m Hi-speed 1 -mx In(.x) 1985 1931-32 1941 1941 1950 1959.I25 -2.08 - b2 - - - -.5 -0.69 -4 - - - -2 0.69 -6 21- -288 2.08 - 7 22 8 -2832 3.47 - 14 16 15 -30128 4.85 4 12 31 29 77 23512 6.24 4 13 <strong>27</strong> 14 20 122,048 1.62 2 5 17 10 7 58,192 9.01 1 2 3 2 1 4Estimatedmean 1,564 544 569 619 406 410Biomass (MT)' 0.02 3.9 2.7 2.7 1 .0 0.2"(Smith and Richardson 1977)'Value below sampler threshold'(Murphy 1966)ACKNOWLEDGMENTSWe would like to acknowledge the editorial assistanceof two anonymous reviewers. Rocky French andTerry Palmisano helped with graphics. We thank thecrew of NOAA ship David Starr Jordan and her captain,M. Roll. J. Thrailkill of the National Marine FisheriesService (NMFS) was responsible for cruise logistics.The team of scientists participating on the surveyincluded W. Flerx, J. Metoyer, D. Abramenkoff ofNMFS; T. Dickerson of the <strong>California</strong> Departmentof Fish and Game; W. Bryan, S. Cummings, andC. Walker of Scripps Institution of Oceanography;E. Isidro of the University of Azores, Portugal; andS. Mildner and J. Mildner from Australia. DennisGruber and Evelyn Conley sorted the CalVET samplesand staged the sardine eggs. Betsy Stevens, ElaineSandknop, and Barbara Sumida MacCall providedassistance with egg staging. Celeste Santos Methotentered and edited the data. Rich Charter and CindyMeyer helped with data management.LITERATURE CITEDHatanaka, M. 1956. Biological studies on the population of the saury,Cololubis saira (Brevoort) Part I: reproduction and growth. Tohoku J.Agr. Res. V1(3):2<strong>27</strong>-269.Hewitt, R.P. 1985. The 1984 spawning biomass of the northern anchovy.Calif. Coop. <strong>Oceanic</strong> Fish. Invest. Rep. 26:17-25.Hunter, J.R., and B. Macewicz. 1980. Sexual maturity, batch fecundity.spawning frequency, and temporal pattern of spawning for the northernanchovy, Engradis mordax, during the 1979 spawning season. Calif.Coop. <strong>Oceanic</strong> Fish. Invest. Rep. 21:139-149.Klingbeil, R.A. 1981. Status of the spawning biomass of the Pacific sardine,1980-81. Calif. Dept. Fish and Game, Mar. Resources Admin. Rep. No.81-1.6~.-. 1982. Status of the spawning biomass of the Pacific sardine, 1981-82. Calif. Dept. Fish and Game. Mar. Resources Admin. Rep. No. 81-2,7 P.-. 1983. Status of the spawning biomass of the Pacific sardine. 1982-83. Calif. Dept. Fish and Game. Mar. Resources Admin. Rep. No. 83- I ,5 P.Klingbeil, R.A., and P. Wolf. 1984. Status of the spawning biomass of thePacific sardine, 1983-84. Calif. Dept. Fish Game. Mar. ResourcesAdmin. Rep. No. 84-1, 7 p.MacCall, A.D. 1979. Population estimates for the waning years of thePacific sardine fishery. Calif. Coop. <strong>Oceanic</strong> Fish. Invest. Rep. 20:72-82.MacGregor. J.S. 1957. Fecundity of the Pacific sardine (Sardinopscuerulea). Fish. Bull. 121:4<strong>27</strong>-449.Murphy, (3.1. 1966. Population biology of the Pacific sardine (Sardinopscaerulea). Proc. Cal. Acad. Sci. 34:l-84.Natrella, M.G. 1963. Experimental statistics. National Bureau of StandardsHandbook91, U.S. Supt. Doc.Parker, K. 1980. A direct method for estimating northern anchovy,Engraulis mordax, spawning biomass. Fish. Bull. 78541-544.Picquelle, S.J., and R.P. Hewitt. 1983. The northern anchovy spawningbiomass for the 1982-83 <strong>California</strong> fishing season. Calif. Coop. <strong>Oceanic</strong>Fish. Invest. Rep. 24:16-28.-. 1984. The 1983 spawning biomass of the northern anchovy. Calif.Coop. <strong>Oceanic</strong> Fish. Invest. Rep. 25: 16-<strong>27</strong>.Santander, H., P.E. Smith, and J. Alheit. 1982. Determination of samplingeffort required for estimating egg production of anchoveta (Engraulisringens) off Peru. Bol. Inst. Mar. Peru Callao 7:9- 18.Smith, P.E., S. de la Campa, and J.R. Thrailkill. 1976. Instituto National dePesca and <strong>CalCOFI</strong> statistical regional divisions for ichthyoplanktonsurveys. Southwest Fisheries Center Admin. Rep. LJ-36-31.Smith, P.E., and S.L. Richardson. 1977. Standard techniques for pelagicfish egg and larva surveys. FA0 Tech. Paper No. 175, 100 p.Wolf, P. 1985. Status of the spawning biomass of the Pacific sardine, 1984-85. Calif. Dept. Fish and Game. Mar. Resources Admin. Rep. No. 85-1,20 p.Wolf, P., and P.E. Smith. 1985. An inverse egg production method fordetermining the relative magnitude of Pacific sardine spawning biomassoff <strong>California</strong>. Calif. Coop. <strong>Oceanic</strong> Fish. Invest. Rep. 26:130-138.31