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Potential Association between Insulin-like Growth Factor-1 Receptor Activity and Surf Clam Spisula sachalinensis Larvae Survival

  • Choi, Youn Hee (Institute of Fisheries Sciences, Pukyong National University) ;
  • Nam, Taek Jeong (Institute of Fisheries Sciences, Pukyong National University)
  • Received : 2015.09.21
  • Accepted : 2015.11.08
  • Published : 2015.12.31

Abstract

We investigated the relationship between viability and IGF-1 receptor (IGF-1R) activity in D-shaped and umbo larvae of the surf clam Spisula sachalinensis after treatment with vitrification solution (VS) or freezing. In a toxicity assay, VS1, containing 5 M dimethyl sulfoxide (DMSO), was very harmful to D-shaped and umbo larvae. However, VS2, containing 5 M ethylene glycol (EG), was not harmful to either larval stage. Although VS2 had a promising toxicity test outcome, none of the larvae survived vitrification. After immersion into VSs and freezing, IGF-1R ${\beta}$-subunits were detected in all larvae; however, tyrosine phosphorylation of intracellular ${\beta}$-subunits was detected only in the control and live groups. These results suggest that activation of IGF-1R may influence surf clam larvae viability.

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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