RT journal article
T1 Comparative transcriptomic profiling of gonads in Solea senegalensis: Exploring sex, maturity, and origin variations
A1 Anaya-Romero, Marco
A1 Ramírez Torres, Daniel
A1 Arias Pérez, Alberto
A1 Rodríguez Jiménez, María Esther
A1 Robledo, Diego
A1 Rebordinos González, Laureana
A2 BiomedicinaBiotecnología y Salud Pública
K1 Solea senegalensis
K1 Transcriptomics
K1 Gonadal development
K1 Aquaculture
AB Sex differentiation and determination are crucial processes in complex organisms, with fish exemplifying this diversity through various mechanisms. Solea senegalensis, a benthic flatfish significant for European aquaculture, faces reproductive challenges in captivity, particularly among captive-bred males. These challenges hinder genetic improvement efforts. Recently, the fshr gene was identified as responsible for sex determination in this species, but the pathways and genes involved in gonadal development remain unclear, as do the reproductive difficulties in hatchery-born individuals. This study aimed to analyze the gonadal transcriptome of mature and immature females and males, both wild and hatchery-born, grouped by sex, origin, and maturity for twelve comparative analyses. RNA was extracted and sequenced using Illumina technology, followed by differential expression analysis and GO and KEGG enrichment analyses. Results indicated that most differentially expressed genes were between sexes, with males showing more individual variation, followed by maturity stages and origin. The MAPK signaling pathway, particularly the p38 pathway, was significantly enriched, indicating its role in testicular development. Genes such as mapk11, mapk12, mapk13, and mapk14 were overexpressed in males. In females, differential activation of canonical and non-canonical Wnt pathways highlighted their role in ovarian development. Genes associated with olfactory receptors were overexpressed in wild males compared to cultured (F1) males. These findings provide a clearer understanding of the genes involved in the gonadal development of S. senegalensis.
PB Elsevier
SN 0044-8486
YR 2025
FD 2025-03
LK http://hdl.handle.net/10498/37954
UL http://hdl.handle.net/10498/37954
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026