极地研究2017，Vol.29Issue(4)：477-485,9.DOI:10.13679/j.jdyj.2017.4.477
南设得兰群岛次南极电灯鱼(Electrona carlsbergi)鉴龄校验研究
VALIDATION OF AGEINGELECTRONA CARLSBERGI IN THE SOUTH SHETLAND ISLANDS
摘要
Abstract
Electrona carlsbergi is a species of pelagic fish that inhabits the Southern Ocean and has important ecological function. However, to date there have been only a few reports regarding the age of such fish. To determine the age ofE. carlsbergiand confirm the method of age determination,the diazone numbers ob-tained under direct light of 73 sagittal otolith samples from 59 fish samples collected from the South Shet-land Islands on January, 2010 are used as evidence of age identification. Because of the accessory and false rings of the sagittal plane, a longitudinal section is more suitable than a transverse one for determining the age ofE.carlsbergi.Of the fish whose ages are identified, 67.80% are three or four years old. The Total Concordance (TC), Coefficient of Variation (CV) and Average Percentage Error (APE) are calculated to quantify the accuracy of the age determination. The average of each index is 50.23%, 3.67% and 8.60%, respectively. These three indexes are also used to test the accuracy of different age groups. The results show a negative relationship between CV and TC, whereas APE increases firstly and then decreases. The von Bertalanffy growth function forE.carlsbergiisLt=7.7154(1–e–0.5373(t+2.7807)).关键词
次南极电灯鱼/耳石/年龄鉴定/年龄校验/生长Key words
Electrona carlsbergi/otolith/age determination/age validation/growth引用本文复制引用
刘子俊,魏联,朱国平,张海亭..南设得兰群岛次南极电灯鱼(Electrona carlsbergi)鉴龄校验研究[J].极地研究,2017,29(4):477-485,9.基金项目
国家科技支撑计划项目(2013BAD13B03)和公益性行业(农业)科研专项(201203018)资助 （2013BAD13B03）
