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首页> 外文期刊>ICES Journal of Marine Science >Increasing the precision of the daily egg production method; 2020’s remix of a 1980’s classic
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Increasing the precision of the daily egg production method; 2020’s remix of a 1980’s classic

机译：提高日鸡蛋生产方法的精度; 2020年代的经典的混音

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摘要

This paper reviews application of the Daily Egg Production Method (DEPM) to sardine (Sardinops sagax) off southern Australia between 1995 and 2019. Coefficients of variation (CVs) of estimates of spawning biomass (SB) were reduced from 23-59% to 8-12% by: (i) estimating mean daily egg production (P-0), spawning fraction (S), and sex ratio (R) from all historical data rather than annually; and (ii) combining batch fecundity (F) and female weight (W) into a single parameter, relative fecundity (F' = (F) over cap /W). Total daily egg production was estimated most precisely from annual estimates of spawning area (A) and estimates of P-0 obtained from historical data. Both S and R were estimated most precisely from historical data. Estimating W and F from historical data did not increase precision. F' had lower CVs than both W and F, and was stable across years and a wide range of W. Findings demonstrate that A can be converted into a precise estimates of SB using estimates of P-0, S, R, and F' obtained from historical data. However, the possibility that DEPM parameters may change in the future cannot be discounted. Future monitoring should include annual estimation of P-0 and periodic (e.g. 3-5 years) re-estimation of adult parameters.
机译：本文在1995年至2019年间，将每日鸡蛋生产方法（DEPM）施加到澳大利亚南部的沙丁鱼（SARDINOPS SAGAX）。产卵生物质（SB）估计变异系数（CV）从23-59％降至8 -12％副本：（i）估计平均每日卵产蛋产量（p-0），产卵分数和性别比（r）来自所有历史数据而不是每年; （ii）将批量繁殖（f）和女性重量（w）组合成单个参数，相对繁殖（f'=（f）上帽/ w）。从产卵区域（a）的年度估计数和从历史数据中获得的P-0估计，最精确地估计了每日蛋产量。 S和R均估计历史数据最为精确。估计历史数据的W和F没有提高精度。 F'具有比W和F更低的CV，并且跨越多年的稳定性和各种W.发现证明A可以使用P-0，S，R和F'的估计转换为SB的精确估计从历史数据获得。但是，DEPM参数可能在将来可能改变的可能性不能折扣。未来监测应包括对P-0的年度估计和周期性（例如3-5岁）重新估算成人参数。

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  • 来源
    《ICES Journal of Marine Science》 |2021年第4期|1177-1195|共19页
  • 作者

    Ward Timothy M.; Grammer Gretchen L.; Ivey Alex R.; Smart Jonathan J.; McGarvey Richard;

  • 作者单位

    South Australian Res & Dev Inst SARDI Aquat Sci 2 Hamra Ave Adelaide SA 5024 Australia|Univ Adelaide Sch Biol Sci Adelaide SA 5005 Australia;

    South Australian Res & Dev Inst SARDI Aquat Sci 2 Hamra Ave Adelaide SA 5024 Australia|Univ Adelaide Sch Biol Sci Adelaide SA 5005 Australia;

    South Australian Res & Dev Inst SARDI Aquat Sci 2 Hamra Ave Adelaide SA 5024 Australia;

    South Australian Res & Dev Inst SARDI Aquat Sci 2 Hamra Ave Adelaide SA 5024 Australia|Univ Adelaide Sch Biol Sci Adelaide SA 5005 Australia;

    South Australian Res & Dev Inst SARDI Aquat Sci 2 Hamra Ave Adelaide SA 5024 Australia|Univ Adelaide Sch Biol Sci Adelaide SA 5005 Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fecundity-per-unit-weight; relative fecundity; Sardinops sagax; South Australian sardine fishery;

    机译：每单位重量繁殖;相对繁殖力;撒马丁芝麻;南澳大利亚沙丁鱼渔业;

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