A PCR assay detects a male-specific duplicated copy of Anti-Müllerian hormone (amh) in the
lingcod (Ophiodon elongatus).
BMC Res Notes 2016;
9:230. [PMID:
27103037 PMCID:
PMC4840878 DOI:
10.1186/s13104-016-2030-6]
[Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 04/07/2016] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND
Anti-Müllerian hormone (amh) or Müllerian-inhibiting substance (mis) is a member of the transforming growth factor-β family of hormones. This gene plays a key role in vertebrate male sex-determination by inhibiting the development of the Müllerian ducts, and has been shown to be the master sex-determinant in the Patagonian pejerrey.
RESULTS
In the lingcod, Ophiodon elongatus, both males and females share one copy of amh, however we have identified a second duplicate copy that appears solely in the male individuals. We have developed a PCR-based assay targeting the TGF-β domain of amh that provides a simple method with which to sex lingcod from a small amount of tissue. An analysis across 57 individuals gave a 100% success rate in identifying the phenotypic sex.
CONCLUSIONS
We present a simple method to sex lingcod through non-lethal tissue sampling. A third, independent, male-specific duplication of amh in a teleost fish has been identified in the lingcod.
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