Age and growth of Ceratoscopelus warmingii (Myctophidae) in the South China Sea based on sagittal otolith microstructure

文献类型： 外文期刊

第一作者： Zhang, Jun

作者： Zhang, Jun;Chen, Zuozhi;Jiang, Yane;Xu, Shannan;Zhang, Jun;Chen, Zuozhi;Wang, Yan

作者机构：

关键词： Ceratoscopelus warmingii; age estimation; otolith microstructure; South China Sea

期刊名称：MARINE BIOLOGY RESEARCH （ 影响因子：1.609； 五年影响因子：1.782 ）

ISSN： 1745-1000

年卷期： 2021 年 17 卷 7-8 期

页码：

收录情况： SCI

摘要： Age and growth of a dominant lanternfish Ceratoscopelus warmingii in the South China Sea were investigated based on sagittal otolith microstructure of juvenile and adult specimens collected in June 2015. The length-weight (L-W) relationship for C. warmingii was W-f( )= 0.00000814 L-3.1170 (females) and W-m( )= 0.00001071 L-3.3043 (males), revealing both positive allometric growth and non-significant difference between the sexes. Three distinct zones of the otolith microstructure were depicted, a central zone (CZ), middle zone (MZ) and external zone (EZ). Age was estimated by summing the daily growth increments in otolith sections on the assumption of daily deposition. The von Bertalanffy models of females and males were fitted as L-f = 75.9 [1-exp{-0.0074 (t-14.1)}] and L-m = 65.0[1-exp{-0.0097 (t-7.6)}], respectively. The maximum growth rates estimated were 0.319 mm day(-1) for females and 0.345 mm day(-1) for males, and thereafter the growth rate decreased with age. The back-calculated hatching date of specimens collected was determined as from August of last year to March of next year with a peak in winter. Theoretical maximum growth of C. warmingii appeared to occur near the metamorphic period.

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