No abstract

11Otolith chemistry is widely used to understand patterns of fish movement and habitat use, with 12 significant progress made in understanding the influence of environmental factors on otolith 13 elemental uptake. However, few studies consider the interactive effect that environmental and 14 genetic influences have on otolith chemistry. This study assessed the influence of salinity, 15 temperature and genetics on the incorporation of three key elements (Sr, Ba and Mg) into the 16 otoliths of two discrete stocks of Argyrosomus japonicus fingerlings reared in captivity. Elemental 17 analysis via laser ablation ICPMS found that stock (genetics) had a significant interactive effect on 18 otolith Sr:Ca (salinity  temperature  stock) and Ba:Ca (salinity  stock), but did not affect Mg:Ca 19 incorporation. Mg:Ca showed a positive relationship with temperature for both stocks. The 20 incorporation of some elements into the otoliths of fish is the result of complex interactions 21 between extrinsic and intrinsic factors. These findings highlight the necessity to also consider stock 22 along with environmental variables when using trace elemental signatures to reconstruct the 23 environmental histories of fish. 24

No abstract

No abstract

No abstract