First Genomic Survey of Pleurocryptella fimbriata Provides Preliminary Insights into Genome Characteristics and Evolution of a Deep-Sea Parasitic Isopod

Diversity, Journal Year: 2025, Volume and Issue: 17(4), P. 297 - 297

Published: April 20, 2025

Genomic adaptations of parasitic crustaceans in deep-sea extreme environments are poorly understood. This study presents the first genome survey Pleurocryptella fimbriata, a bopyrid isopod parasitizing squat lobsters, using Illumina sequencing. The size was estimated to be 1.06 Gb via K-mer analysis, smaller than its free-living relatives. repeat content and heterozygosity were 66.31% 1.14%, respectively, indicating complex genome. draft assembly yielded 0.93 scaffolds with an N50 length 989 bp, complete mitochondrial 14,711 bp obtained. Phylogenetic analyses 13 protein-coding genes confirmed monophyly Bopyridae, supporting as most primitive genus within group key role deep sea origin diversification bopyrids. A gene variation analysis identified NAD2 NAD4 promising DNA markers for population genetic P. fimbriata. Twenty-four positively selected sites across COX1, NAD2, fimbriata explained basis adaptive evolution at level. These findings provide valuable genomic resources establish foundation further high-quality mechanism studies

Language: Английский

Positive selection in cilia-related genes may facilitate deep-sea adaptation of Thermocollonia jamsteci

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 950, P. 175358 - 175358

Published: Aug. 8, 2024

Language: Английский