Techniques for improving estimates of maturity ogives in groundfish using double-reads and measurement error models
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- 作者：Melissa A. Heada ; melissa.head@noaa.gov" class="auth_mail" title="E-mail the corresponding author ; Gretchen L. Stokesb ; James T. Thorsona ; Aimee A. Kellera
- 关键词：Maturity ogive ; Skipped spawning ; Histological error ; Reader certainty ; Groundfish ; Measurement error model
- 刊名：Fisheries Research
- 出版年：2016
- 出版时间：July 2016
- 年：2016
- 卷：179
- 期：Complete
- 页码：251-258
- 全文大小：1804 K
文摘
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Double reads indicated that reader uncertainty was predictive of reader error rates.
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Maturity asymptotes of 1.0, 0.96 and 0.81 suggest differences in skipped spawning.
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Models with multiple covariates (e.g. length, age, date) improve maturity estimates.
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Variation among readers analysis was largely due to slide quality and experience.
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Readers with little training can be used for accurate analysis, if uncertainty is noted.