[Exogenous Sr2+ sedimentation on otolith of chum salmon embryos].
Ying Yong Sheng Tai Xue Bao
; 26(10): 3189-94, 2015 Oct.
Article
em Zh
| MEDLINE
| ID: mdl-26995930
ABSTRACT
To explore the exogenous Sr2+ sedimentation on otolith of chum salmon embryos, chum salmon embryos were exposed to culture water contained Sr2+ at Sr2+ concentration of 50, 100, 200 or 400 mg . L-1 for 48 h to imitate Sr2+ sedimentation. After a culturing period of 12 d and 100 d, the otoliths of the chum salmon were taken to detect exogenous Sr2+ sedimentation with electro-probe microanalyzer (EPMA). The results showed that obvious deep red strontium signatures were produced in the otolith of chum salmon at different concentrations of Sr2+. The mean and extreme values of peak strontium area were not stable for the same Sr2+ dose, but the lowest of all the peak values was 35.1 times as much as that of control. Overall, the strontium value increased with the increase of Sr2+concentration. The strontium peak had no signs of abating after a culture period of 100 d. The results also showed that strontium was gradually deposited in the otolith, and had obvious hysteresis to immersion. Strontium sedimentation could also return to a normal level after the peak. These characteristics accorded exactly with the requirement of discharge tag technology, which indicated that exogenous Sr2+ was suitable in the marking of salmon otolith.
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Base de dados:
MEDLINE
Assunto principal:
Estrôncio
/
Membrana dos Otólitos
/
Oncorhynchus keta
Idioma:
Zh
Ano de publicação:
2015
Tipo de documento:
Article