The snakeskin gourami (Trichopodus pectoralis) tends to exhibit xx/xy sex determination

Thitipong Panthum, Nararat Laopichienpong, Ekaphan Kraichak, Worapong Singchat, Dung Ho My Nguyen, Nattakan Ariyaraphong, Syed Farhan Ahmad, Narongrit Muangmai, Prateep Duengkae, Surin Peyachoknagul, Tariq Ezaz, Kornsorn Srikulnath

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
14 Downloads (Pure)

Abstract

The snakeskin gourami (Trichopodus pectoralis) has a high meat yield and is one of the top five aquaculture freshwater fishes in Thailand. The species is not externally sexually dimorphic, and its sex determination system is unknown. Understanding the sex determination system of this species will contribute to its full-scale commercialization. In this study, a cytogenetic analysis did not reveal any between-sex differences in chromosomal patterns. However, we used genotyping-by-sequencing to identify 4 male-linked loci and 1 female-linked locus, indicating that the snakeskin gourami tends to exhibit an XX/XY sex determination system. However, we did not find any male-specific loci after filtering the loci for a ratio of 100:0 ratio of males:females. This suggests that the putative Y chromosome is young and that the sex determination region is cryptic. This approach provides solid information that can help identify the sex determination mechanism and potential sex determination regions in the snakeskin gourami, allowing further investigation of genetic improvements in the species.

Original languageEnglish
Article number43
Pages (from-to)1-17
Number of pages17
JournalFishes
Volume6
Issue number4
DOIs
Publication statusPublished - Dec 2021

Fingerprint

Dive into the research topics of 'The snakeskin gourami (Trichopodus pectoralis) tends to exhibit xx/xy sex determination'. Together they form a unique fingerprint.

Cite this