Multiplex PCR for the rapid detection of insulin-like growth factor in the Pacific oyster, Crassostrea gigas: a useful indicator for growth assessment.

Abstract:

:Insulin-like growth factor (IGF) expression plays a critical role in the endocrine regulation of proliferation, differentiation, and growth in shellfish as well as in fish. The Pacific oyster, Crassostrea gigas, is a significant aquaculture species that comprises a large percentage of the Korean shellfish industry; moreover, its growth is economically important in aquaculture. However, when measuring the growth rate in shellfish, the soft tissue weight is difficult to determine because of the shell weight. In the present study, we describe an indirect method of measuring the growth rate using multiplex polymerase chain reaction (PCR) and analyzing levels of molluscan insulin-related peptide (MIP), the acid labile subunit of the IGF-binding protein complex (IGFBP ALS), and insulin-related peptide receptor (CIR) in Pacific oysters. The predicted sizes of amplicons were 776, 537, 380, and 198 bp, and the detection limit of the annealing temperatures was confirmed to be 65 °C. The annual expression of MIP and IGFBP ALS in tissues reached high levels in the winter following the condition index (CI). MIP and IGFBP ALS in male gonads and CIR in female gonads were related to the CI. This newly improved multiplex PCR provides an indirect measure of the growth rate; thus, it can be used to rapidly assess the growth rate. In addition, this method can supplement traditional growth data from oyster farms.

journal_name

Mol Biol Rep

authors

Moon JS,Choi YH

doi

10.1007/s11033-018-4559-z

subject

Has Abstract

pub_date

2019-02-01 00:00:00

pages

1023-1031

issue

1

eissn

0301-4851

issn

1573-4978

pii

10.1007/s11033-018-4559-z

journal_volume

46

pub_type

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