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
作者： Zhang, Jun 1 ; Wang, Yan 3 ; Chen, Zuozhi 1 ; Jiang, Yane 1 ; Xu, Shannan 1 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploit, Minist Agr & Rural Affairs, Guangzhou 510300, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China
3.Dalian Ocean Univ, Sch Marine Technol & Environm, Dalian, Peoples R China
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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