Otolith chemical signatures of spottedtail goby Synechogobius ommaturus in coastal waters of China

• Published in: Chinese journal of oceanology and limnology Vol. 29; no. 3; pp. 640 - 646
• Main Author: 王英俊 叶振江 刘群 王巍令 曹亮 沈伟
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science Press 01.05.2011; Springer Nature B.V
• Subjects: Animal populations; Barium; Calcium; Chemistry; Coastal waters; Cobalt; Discriminant analysis; Ears & hearing; Earth and Environmental Science; Earth Sciences; Fish; Homogeneity; Inductively coupled plasma mass spectrometry; Lead; Magnesium; Manganese; Marine; Marine biology; Marine fishes; Mass spectrometry; Mass spectroscopy; Normal distribution; Oceanography; Otoliths; Regressions; Stocks; Strontium; Synechogobius ommaturus; Variance analysis; Weight; Zinc; 中国; 元素浓度; 化学信号; 沿海水域; 电感耦合等离子体; 耳石; 虾虎鱼; 质谱测定; INW, China, People's Rep., Shandong Prov., Weihai; INW, China, People's Rep., Tianjin; INW, China, People's Rep., Shandong Prov., Qingdao; INW, China, People's Rep., Liaoning Prov., Dalian; INW, China, People's Rep., Liaoning Prov., Dandong; INW, China, People's Rep., Shandong Prov., Dongying, Dongying; otolith chemistry; stock identification
• ISSN: 0254-4059; 2096-5508; 1993-5005; 2523-3521
• DOI: 10.1007/s00343-011-0125-4

This study explores the potential existence of local stocks of Synechogobius ommaturus using otolith chemical signatures. The concentrations of 10 elements （K, Ca, Na, Mg, St, Pb, Ba, Mn, Co, Zn） in the otoliths from eight stocks （Dandong, Dalian, Tianjin, Dongying, Weihai, Qingdao, Ganyu and Xiamen） ofS. ommaturus were measured by Inductively Coupled Plasma Mass Spectrometry and regressed against otolith weight. No significant correlation between otolith weight and concentrations of Na, Mg, Ca, Sr, Co, Ba, Zn and Pb were observed. Concentrations of K and Mn were correlated with otolith weight. Consequently, the residuals of the regressions were used instead of the original concentrations in subsequent analyses. Analysis of variance （ANOVA） showed no significant difference between males and females in otolith chemical signatures. Differences were found among the locations for K, Sr, Mn, Co, Ba, Pb, but not for Ca, Na, Mg and Zn. Residuals of the regressions of elemental concentrations against otolith weight that fitted the normal distribution and homogeneity were studied by discriminant analysis. The success of the discriminant function to predict the location of S. ommaturus capture ranged from 100% for Weihai and Xiamen stocks, to only 44.4% and 62.5% for Qingdao and Dandong stocks, respectively. The average prediction success was 80.3%.