A Preliminary Analysis of Trace-Elemental Signatures in Statoliths of Different Spawning Cohorts for Dosidicus gigas off EEZ Waters of Chile  

作　　者：LIU Bilin CHEN Xinjun FANG Zhou HU Song SONG Qian 

机构地区：[1]College of Marine Sciences,Shanghai Ocean University [2]Collaborative Innovation Center for Distant-Water Fisheries [3]The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education [4]National Engineering Research Center for Oceanic Fisheries,Shanghai Ocean University [5]Collaborative Innovation Center for National Distant-water Fisheries

出　　处：《Journal of Ocean University of China》2015年第6期1059-1067,共9页中国海洋大学学报（英文版）

基　　金：funded by the National Natural Science Foundation of China(Nos.41306127 and 41276156);National Science Foundation of Shanghai(13ZR1419 700);the innovation Program of Shanghai Municipal Education Commission(13YE091);Research Fund for the Doctoral Program of Higher Education of China(20133104120001);Shanghai Universities First-class Disciplines Project(Fisheries);supported by Shanghai Oversea Teaching Scholar Program and SHOU International Center for Marine Sciences

摘　　要：We applied solution-based ICP-MS method to quantify the trace-elemental signatures in statoliths of jumbo flying squid, Dosidius gigas, which were collected from the waters off northern and central Chile during the scientific surveys carried out by Chinese squid jigging vessels in 2007 and 2008. The age and spawning date of the squid were back-calculated based on daily increments in statoliths. Eight elemental ratios(Sr/Ca, Ba/Ca, Mg/Ca, Mn/Ca, Na/Ca, Fe/Ca, Cu/Ca and Zn/Ca) were analyzed. It was found that Sr is the second most abundant element next to Ca, followed by Na, Fe, Mg, Zn, Cu, Ba and Mn. There was no significant relationship between element/Ca and sea surface temperature(SST) and sea surface salinity(SSS), although weak negative or positive tendency was found. MANOVA analysis showed that multivariate elemental signatures did not differ among the cohorts spawned in spring, autumn and winter, and no significant difference was found between the northern and central sampling locations. Classification results showed that all individuals of each spawned cohorts were correctly classified. This study demonstrates that the elemental signatures in D. gigas statoliths are potentially a useful tool to improve our understanding of its population structure and habitat environment.We applied solution-based ICP-MS method to quantify the trace-elemental signatures in statoliths of jumbo flying squid, Dosidius gigas, which were collected from the waters off northern and central Chile during the scientific surveys carried out by Chinese squid jigging vessels in 2007 and 2008. The age and spawning date of the squid were back-calculated based on daily increments in statoliths. Eight elemental ratios (Sr/Ca, Ba/Ca, Mg/Ca, Mn/Ca, Na/Ca, Fe/Ca, Cu/Ca and Zn/Ca) were analyzed. It was found that Sr is the second most abundant element next to Ca, followed by Na, Fe, Mg, Zn, Cu, Ba and Mn. There was no significant relationship between element/Ca and sea surface temperature (SST) and sea surface salinity (SSS), although weak negative or positive tendency was found. MANOVA analysis showed that multivariate elemental signatures did not differ among the cohorts spawned in spring, autumn and winter, and no significant difference was found between the northern and central sampling locations. Classification results showed that all individuals of each spawned cohorts were correctly classified. This study demonstrates that the elemental signatures in D. gigas statoliths are potentially a useful tool to improve our understanding of its population structure and habitat environment.

关 键 词：jumbo flying squid element/Ca OFF EEZ WATERS of Chile solution-based ICP-MS environmental variables 

分 类 号：S917.4[农业科学—水产科学]