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Commercial species

机译：商业物种

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A total of 5478 fishes were sampled between 2009 and 2020 to assess length-weight, length-length and weight-weight relationships in 39 marine species from 10 families caught in the Seychelles waters by the artisanal fishery. Two types of length (total length TL, fork length FL) and three types of weight (whole weight WT, gutted weight GW and gilled-gutted weight GGW) were measured. The parameters of the relationships were estimated using the log-transformed allometric model with bias correction. Our results include length-weight, length-length and weight-weight relationships for 39, 20 and 18 species, respectively. Our length-weight data and resulting relationships were compared against FishBase database for 36 species and were in the Bayesian 95% confidence interval of the relationships available for 33 species and above for Gnathanodon speciosus, Lutjanus gibbus and Variola louti. Finally, for five abundant and widely dispersed species we tested for spatial differences in morphometric relationships between the Mane Plateau and three southern atoll groups. Significant differences were found for two species only, but their magnitude was small. We thus argue for the regression relationships based on pooled data to be used for most types of population and community analyses. The availability of these morphometric relationships will support the application of accurate size-based analyses for Seychelles fisheries survey data, and so enhance understanding of the ecology of the reef-associated fish component of marine ecosystems and food webs, and improve fisheries research management.
机译：在2009年至2020年之间，共采样了5478条鱼，以评估来自10个家庭的39个海洋物种的长度，长度和体重关系，从塞舌尔水产品中捕获的10个家庭。测定两种类型的长度（总长度TL，叉长度FL）和三种类型的重量（总重量WT，去内脏重量GW和褶折-去内脏重量GGW）的。使用具有偏压校正的日志变换的同样模型来估计关系的参数。我们的结果包括分别为39,20和18种的长度，长度和重量重量关系。我们的长度数据和由此产生的关系进行了比较了36种的鱼酶数据库，并在贝叶斯95％的关系中获得了33种及以上的关系的置信区间，Lutjanus Gibbus和Variola Louti。最后，对于五种丰富和广泛分散的物种，我们在鬃毛高原和三个南部环礁组之间进行了形态学关系的空间差异。仅发现两个物种的显着差异，但它们的幅度很小。因此，我们争论基于汇集数据的回归关系，以用于大多数类型的人口和社区分析。这些形态关系的可用性将支持塞舌尔渔业调查数据精确的基于大小分析的应用，因此提高海洋生态系统和食物链的礁区鱼类组成的生态的理解，提高渔业研究管理。

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    《Oceanographic Literature Review》 |2021年第3期|664-674|共11页
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