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首页> 外文期刊>Marine genomics >A first genomic portrait of the Florida stone crab Menippe mercenaria: Genome size, mitochondrial chromosome, and repetitive elements
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A first genomic portrait of the Florida stone crab Menippe mercenaria: Genome size, mitochondrial chromosome, and repetitive elements

机译：佛罗里达州石蟹植物植物植物群岛的第一个基因组肖像：基因组大小，线粒体染色体和重复元素

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摘要

The Florida stone crab, Menippe mercenaria, is an ecologically relevant species in shallow water hard-bottom environments and a target of a profitable fishery in the western Atlantic. Using low coverage short Illumina 250 bp pair-end reads sequencing, this study reports, for the first time, the genome size, mitochondrial chromosome, and nuclear repetitive elements, including microsatellites, in M. mercenaria. The average haploid genome size estimated using a k-mer approach was 33 Mbp which is smaller than the 1.76 Gbp size estimated using static cell fluorometry. The mitochondrial genome of M. mercenaria is 15,644 bp in length and comprised of 13 protein-coding genes, 2 ribosomal RNA genes, and 22 transfer RNA genes. Repetitive elements constituted -83.5% of the nuclear genome while -16.5% of the genome represented single- or low-copy sequences. A large portion of repetitive sequences could not be assigned to known repeat element families. Considering only annotated repetitive elements, the most ubiquitous belonged to Class I-LINE and Class I-LTR-Ty-3/Gypsy elements. A total of 66 SSRs were identified. These newly developed genomic resources will contribute to the better understanding of meta-population connectivity, hybridization with the congeneric M. adina, and putative genomic mechanisms involved in the acclimatization and adaptation to climate change of the Florida stone crab.
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