A novel length back-calculation approach accounting for ontogenetic changes in the fish length - otolith size relationship during the early life of sprat (Sprattus sprattus)

被引：14

作者：

Guenther, Claudia C. ^{[1
]}

Temming, Axel ^{[1
]}

Baumann, Hannes ^{[2
]}

Huwer, Bastian ^{[3
]}

Moellmann, Christian ^{[1
]}

Clemmesen, Catriona ^{[4
]}

Herrmann, Jens-Peter ^{[1
]}

机构：

[1] Univ Hamburg, Inst Hydrobiol & Fisheries Sci, D-22767 Hamburg, Germany

[2] SUNY Stony Brook, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA

[3] Tech Univ Denmark, Natl Inst Aquat Resources, DTU Aqua, DK-2920 Charlottenlund, Denmark

[4] Univ Kiel, Leibniz Inst Marine Res, IFM GEOMAR, D-24105 Kiel, Germany

来源：

CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES | 2012年 / 69卷 / 07期

关键词：

CENTRAL BALTIC SEA; THE-YEAR SPRAT; JAPANESE SARDINE; SETTLEMENT-MARKS; JUVENILE STAGES; GROWTH-RATES; LARVAL; TEMPERATURE; VARIABILITY; VALIDATION;

D O I：

10.1139/F2012-054

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

An individual-based length back-calculation method was developed for juvenile Baltic sprat (Sprattus sprattus), accounting for ontogenetic changes in the relationship between fish length and otolith length. In sprat, metamorphosis from larvae to juveniles is characterized by the coincidence of low length growth, strong growth in body height, and maximal otolith growth. Consequently, the method identifies a point of metamorphosis for an individual as the otolith radius at maximum increment widths. By incorporating this information in our back-calculation method, estimated length growth for the early larval stage was more than 60% higher compared with the result of the biological intercept model. After minimal length growth during metamorphosis, we found the highest increase in length during the early juvenile stage. We thus located the strongest growth potential in the early juvenile stage, which is supposed to be critical in determining recruitment strength in Baltic sprat.

引用

页码：1214 / 1229

页数：16