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Roles of a Y-Linked iDmrt1 Paralogue and Insulin-like Androgenic Gland Hormone in Sexual Development in the Tropical Rock Lobster, Panulirus ornatus
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Roles of a Y-Linked iDmrt1 Paralogue and Insulin-like Androgenic Gland Hormone in Sexual Development in the Tropical Rock Lobster, Panulirus ornatus
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Journal Article
Roles of a Y-Linked iDmrt1 Paralogue and Insulin-like Androgenic Gland Hormone in Sexual Development in the Tropical Rock Lobster, Panulirus ornatus
2025
Overview
Understanding the mechanisms of sexual development would pave the way for producing mono-sex populations to aid the aquaculture industry. This study investigates the functions of the Y-linked iDmrt1 paralogue (Po-iDMY) and insulin-like androgenic gland hormone (Po-IAG) in the process of sexual development in the tropical rock lobster, Panulirus ornatus (TRL). Previously, we identified that Po-iDMY, a male-specific heterogametic (Y-linked) paralogue of the autosomal Po-iDmrt1 found in TRL, is a second sex-linked iDmrt gene identified in invertebrates. Using 5′ and 3′ rapid amplification of cDNA ends and data from a draft male genome (with an assembly genome size of approximately 2.446 Gbp and 87% BUSCO completeness), we obtained the full-length Po-iDMY gene (encoding a protein of 312 amino acids). A 411 bp male-specific sequence located at the 3′ untranslated region of Po-iDMY mRNA was used as a sex marker, which was reported for the first time in our draft genome. However, Po-iDMY is not a master sex-determining factor since it was not expressed across developmental stages of embryos, juveniles and adults. Instead, we silenced Po-IAG at an early juvenile stage, generating two potential neo-females, implying that sexual manipulation could be a promising technique in TRL.
Publisher
MDPI AG,MDPI
Subject
