CalCOFI Reports, Vol. 30, 1989 - California Cooperative Oceanic ...
CalCOFI Reports, Vol. 30, 1989 - California Cooperative Oceanic ... CalCOFI Reports, Vol. 30, 1989 - California Cooperative Oceanic ...
~~ ~ ~ ~~ ~~ ~ ~~ ~ ~ SANZ AND URIARTE: BAY OF BlSCAY ANCHOVY REPRODUCTION CalCOFl Rep.,Vol. 30,1989 TABLE 9 Relative Fecundity and Regression between Batch Fecundity and Gonad-Free Weight of Different Anchovy Species Sub- Species population Year Month *E ringens north + cent 1981 AdSP *E ringens central 1981 AglSp *E ringens north 1981 ‘WSP *E mordax central 1978 *E rnordax central 1979 *E rnovdax central 1980 *E mordax central 1981 *E rnordax central 1981 *E carpenst 1977 E encrarrcholus 1987 ApIMy *Data from Alheit et a1 (1983) tMean weight $Parameter not calculated by the hydrated oocytes method Sample size 437 254 183 23 44 33 127 109 14 62 Weight range - ~~ 15-18 15-38 15-38 9-31 9-28 t17.11 t14.75 t16.54 t17.24 15-48 Relative fecundity Mean SD 580 139 637 134 502 103 389 141 438 150 444 80 601 180 606 151 $644 517 153 83 r 0.806 0.769 0.883 0.511 0.784 0.903 0.873 0.724 0.451 0.839 Slope ~~ 981 1213 824 528 881 624 872 852 1542 597 and 7 days, with a spawning period of approximately 90 days per anchovy, the total annual number of spawns per year would be between 12 and 30. These values turn out to be close to those given by Smith (1985) for E. mordax, according to different ages. This gives us an annual production range of 201,000-503,000 eggs. This approach is comparatively superior to the range of 23,000-173,000 eggs per spawning period given by Cendrero et al. (1981), who counted the total number of oocytes >250 p in the ovary. As we can see, the use of standing-stock oocytes underestimates the annual fecundity. For indeterminate spawners like the anchovy, annual fecundity must be calculated by both the batch fecundity and the number of spawnings per year (Hunter and Macewicz 1985). ACKNOWLEDGMENTS Many thanks go to the fishermen of the Basque Country purse seine fleet for letting us collect the samples aboard. The study was funded by the Agriculture and Fish Department of the Basque Government, the Cofradia de Pescadores de Vizcaya, and the Servicio de Investigacion Oceanografica; we gratefully acknowledge their support. LITERATURE CITED Alheit, J. 1987. Variation of batch fecundity of sprat, Sprattus spratus, during the spawning season. ICES C.M. /H:44, 7 pp. Alheit, J., B. Alegre, V. H. Alarcon, and B. Macewicz. 1983. Batch fecundity and spawning frequency of various anchovy (genus: Em gradis) populations from upwelling areas and their use for spawning biomass estimates. FA0 Fish. Rep. 291:977-985. Andreu, B. 1950. Sobre la maduracidn sexual de la anchoa (Engradis encrasicholur) de las costas del Norte de Espafia. Datos bioldgicos y biomktricos. P. Ins. Biol. Apl. Anon. 1988. Report of the Working Group on the Assesment Pelagic Stocks in Division VIIIc and IXa and Horse Mackerel. ICES, Doc. C. M. 1988/Asses:22. Arbault, S., and N. Lacroix. 1969. Epoques et aires de ponte de poissons teleosteens du Golfe de Gascogne en 1965-1966 (oeufs et larves). Rev. Trav. Inst. Peches Marit. 33(2):181-201. -. 1971. Aires de ponte de la sardine, du sprat et de l’anchois dans le Golfe de Gascogne et sur le plateau Celtique. Resultats de 6 annees d’etude. Rev. Trav. Inst. Peches Marit. 35(1):35-36. -, 1973. La ponte de la sardine, du sprat et de l’anchois dans le Golfe de Gascogne en 1972. ICES, Doc. C. M. 1973iJ:lO. Cendrero, O., J. L. Cort, and E. Cardenas (De). 1981. Revisidn de algunos datos sobre la biologia de la anchoa (Engraulis rncrasitholns L.) del Mar Cantibrico. Bol. Ins. Esp. Ocean. 311:118-123. Cort, J. L., 0. Cendrero, and E. Cardenas (De). 1977. Nouvelle information sur la pCche espagnole a l’anchois du Golfe de Gascogne. ICES, Doc. C. M. 1977/J:6. -. 1979. Nuevos datos sobre la anchoa del Cantibrico. Inst. Esp. Ocean. Inf. Pesquera (9), 10 pp. Cort, J. L., 0. Cendrero, and X. Iribar. 1976. La anchoa del Cantdbrico (Engraulis encvasicholrrr). Resultados de las campaiias de 1974, 1975 y 1976. Bol. Inst. Esp. Ocean. 220), 34 pp. Dicenta, A. 1984. Aportacidn a1 conociniiento del ictioplancton de la costa vasca. Bol. Inst. Esp. Ocean. (2):94-105. Furnestin, J. 1945. Note preliminaire sur l’anchois (Engradis encrasicholur L.) du Golfe de Gascogne. Rev. Trav. Off. Sci. Tech. PCches Marit. 13(1-4):197-209. Holden, M. J., and D. F. S. Raitt, eds. 1974. Manual offisheriesscience. Part 2 -Methods of resource investigation and their application. FA0 Fish. Tech. Pap. 115 (Rev. I), 241 pp. Hunter, J. R. 1985. Preservation of northern anchovy in formaldehyde solution. In An egg production method for estimating spawning biomass of pelagic fish: application to the northern anchovy (Engraulis mordax), R. Lasker, ed. Southwest Fisheries Center Admin. Rep. LJ-84-37, 321 pp. Hunter, J. R., and S. R. Goldberg. 1980. Spawning incidence and batch fecundity in northern anchovy, Engrunlir niordax. Fish. Bull., U. S. 771641-652. Hunter, J. R., and B. J. Macewicz. 1980. Sexual maturity, batch fecundity, spawning frequency and temporal pattern of spawning for northern anchovy, Engranlis niordax, during the 1979 spawning season. Calif. Coop. Oceanic Fish. Invest. Rep. 21:139-149. -, 1985. Measurements of spawning frequency in multiple spawning fishes. In An egg production method for estimating spawning biomass of pelagic fish: application to the northern anchovy (Engraulis mordax), R. Lasker, ed. Southwest Fisheries Center Admin. Rep. LJ-84-37, 321 pp. Hunter, J. R., N. C. H. Lo, and R. J. H. Leong. 1985. Batch fecundity in multiple spawning fishes. In An egg production method for estimating spawning biomass of pelagic fish: application to the northern anchovy (Engradis niordax), R. Lasker, ed. Southwest Fisheries Center Admin. Rep. LJ-84-37, 321 pp.
SANZ AND URIARTE: BAY OF BISCAY ANCHOVY REPRODUCTION ColCOFl Rep.,Vol. 30,1989 Lo, N. C. H., J. Alheit, and B. Alegre. 1986. Fecundidad parcial de la sardina peruana (Sardimpis zagax). Bol. Inst. Mar Peru, Callao, 10:45-60. Parker, K. 1980. A direct method for estimating northern anchovy, (Eqraulis mordux), spawning biomass. Fish. Bull., U.S. 78(2):541- 544. Santiago, J., and A. Eltink. 1988. Distribution and abundance of anchovy eggs in the Bay of Biscay in 1987 in comparison with 1983 and 1986. ICES, Doc. C. M. 1988/H:9. Smith, P. H. 1985. Year class strength and survival of 0-group clupeoids. Can. J. Fish. Aquat. Sci. 42(suppl. 1):69-82. Sokal, P. R., and F. J. Rohlf. 1981. Biometry (2nd edition). San Francisco: Freeman and Company. Suau, P., and F. Vives. 1979. Ictioplancton de las aguas del Cantlbrico frente a Punta Endata (N. EspaAa). Inv. Pesq. 43(3):723-736. Uriarte, A., and A. Astudillo. 1987. The anchovy in the Bay of Biscay: new data and analysis of the fishery 1974-1987. ICES, DOC. C. M. 1987/H:22. 135
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SANZ AND URIARTE: BAY OF BISCAY ANCHOVY REPRODUCTION<br />
ColCOFl Rep.,<strong>Vol</strong>. <strong>30</strong>,<strong>1989</strong><br />
Lo, N. C. H., J. Alheit, and B. Alegre. 1986. Fecundidad parcial de la<br />
sardina peruana (Sardimpis zagax). Bol. Inst. Mar Peru, Callao,<br />
10:45-60.<br />
Parker, K. 1980. A direct method for estimating northern anchovy,<br />
(Eqraulis mordux), spawning biomass. Fish. Bull., U.S. 78(2):541-<br />
544.<br />
Santiago, J., and A. Eltink. 1988. Distribution and abundance of anchovy<br />
eggs in the Bay of Biscay in 1987 in comparison with 1983 and<br />
1986. ICES, Doc. C. M. 1988/H:9.<br />
Smith, P. H. 1985. Year class strength and survival of 0-group clupeoids.<br />
Can. J. Fish. Aquat. Sci. 42(suppl. 1):69-82.<br />
Sokal, P. R., and F. J. Rohlf. 1981. Biometry (2nd edition). San Francisco:<br />
Freeman and Company.<br />
Suau, P., and F. Vives. 1979. Ictioplancton de las aguas del Cantlbrico<br />
frente a Punta Endata (N. EspaAa). Inv. Pesq. 43(3):723-736.<br />
Uriarte, A., and A. Astudillo. 1987. The anchovy in the Bay of Biscay:<br />
new data and analysis of the fishery 1974-1987. ICES, DOC. C. M.<br />
1987/H:22.<br />
135
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