Using otolith weight to predict the age of Pennahia macrocephalus in the mouth of the Beibu Gulf

doi:10.1007/s00343-009-9210-3

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	Using otolith weight to predict the age of Pennahia macrocephalus in the mouth of the Beibu Gulf
	Yan Yunrong 1,2,4; Wu Yanfang 1; Lu Huosheng 1; Li Zhonglu 1,2; Jin Xianshi 3
	2009-06-01
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	0254-4059
卷号	27 期号:2 页码:342-349
文章类型	Article
摘要	The relation between otolith weight (OW) and the age of marine fish is studied. A total of 222 individuals of bighead white croaker, Pennahia macrocephalus were sampled seasonally in the mouth of the Beibu Gulf, the South China Sea, in 2007. Since there are no significant differences in sagittal OW between otolith in pairs (Pa parts per thousand yen0.05), the undamaged left sagittal otolith is used for age determination. The highest correlations among standard length, OW and fish ages are confirmed by linear, exponential and multinomial regression. Results show that sagittal OW overlaps only occasionally among age groups, and to individuals with similar standard length, the older and slower-growing fish has a heavier otolith because of the continued otolith material deposition. There are differences in sagittal OW among different age groups and significant positive linear relationship with age (P < 0.05). The age readings can be verified by plotting the sagittal OW versus the standard length for age groups, and the individuals with similar standard length but in different ages can be separated by sagittal OW frequency analysis. Mostly, the predicted ages using the regression between sagittal OW and ages are closed to the observed ages by counting annulus on scale. It indicates that the sagittal OW analysis is a useful technique for validating the accuracy of age determination by annuli counts, especially for individuals of similar size. Furthermore, the technique is applied for Pennahia macrocephalus with discussion in this paper.; The relation between otolith weight (OW) and the age of marine fish is studied. A total of 222 individuals of bighead white croaker, Pennahia macrocephalus were sampled seasonally in the mouth of the Beibu Gulf, the South China Sea, in 2007. Since there are no significant differences in sagittal OW between otolith in pairs (Pa parts per thousand yen0.05), the undamaged left sagittal otolith is used for age determination. The highest correlations among standard length, OW and fish ages are confirmed by linear, exponential and multinomial regression. Results show that sagittal OW overlaps only occasionally among age groups, and to individuals with similar standard length, the older and slower-growing fish has a heavier otolith because of the continued otolith material deposition. There are differences in sagittal OW among different age groups and significant positive linear relationship with age (P < 0.05). The age readings can be verified by plotting the sagittal OW versus the standard length for age groups, and the individuals with similar standard length but in different ages can be separated by sagittal OW frequency analysis. Mostly, the predicted ages using the regression between sagittal OW and ages are closed to the observed ages by counting annulus on scale. It indicates that the sagittal OW analysis is a useful technique for validating the accuracy of age determination by annuli counts, especially for individuals of similar size. Furthermore, the technique is applied for Pennahia macrocephalus with discussion in this paper.
关键词	Pennahia Macrocephalus Sagittal Otolith Weight-age Relationship The Mouth Of The Beibu Gulf
学科领域	Limnology ; Oceanography
DOI	10.1007/s00343-009-9210-3
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000267970300020
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/3054
专题	实验海洋生物学重点实验室
作者单位	1.Guangdong Ocean Univ, Fac Fisheries, Zhanjiang 524088, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Chinese Acad Fisheries Sci, Yellow Sea Fisheries Res Inst, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Yan Yunrong,Wu Yanfang,Lu Huosheng,et al. Using otolith weight to predict the age of Pennahia macrocephalus in the mouth of the Beibu Gulf[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2009,27(2):342-349.
APA	Yan Yunrong,Wu Yanfang,Lu Huosheng,Li Zhonglu,&Jin Xianshi.(2009).Using otolith weight to predict the age of Pennahia macrocephalus in the mouth of the Beibu Gulf.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,27(2),342-349.
MLA	Yan Yunrong,et al."Using otolith weight to predict the age of Pennahia macrocephalus in the mouth of the Beibu Gulf".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 27.2(2009):342-349.

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