Lead-radium dating of Pacific cod (Gadus macrocephalus) - validation of the young-fish scenario

被引：5

作者：

Andrews, Allen H. ^{[1
]}

机构：

[1] NOAA, Fisheries Pacific Isl Fisheries Sci Ctr, 1845 Wasp Blvd, Honolulu, HI 96818 USA

来源：

MARINE AND FRESHWATER RESEARCH | 2016年 / 67卷 / 12期

关键词：

age validation; Gadiformes; Gulf of Alaska; lead-210; otolith; radium-226; AGE-DETERMINATION; LONGEVITY; OTOLITHS;

D O I：

10.1071/MF15228

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

Age readers disagree on the age reading interpretation of otolith growth patterns for the Pacific cod (Gadus macrocephalus). One interpretation describes a young-fish scenario with a life span near 10-12 years, whereas another interpretation describes an old-fish scenario at more than 30 years. In this study, lead-radium dating was performed on Pacific cod otoliths to test the validity of the old-fish age reading scenario. Radiometric ages revealed that the young-fish scenario was valid because the actual age of the two oldest adult groups was more than 20 years younger than estimated by the old-fish scenario.

引用

页码：1982 / 1986

页数：5

共 17 条

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