Abstract:
Background:Panulirus argus is an ecologically relevant species in shallow water hard-bottom environments and coral reefs and target of the most lucrative fishery in the greater Caribbean region. Methods:This study reports, for the first time, the genome size and nuclear repetitive elements, including the 45S ribosomal DNA operon, 5S unit, and microsatellites, of P. argus. Results:Using a k-mer approach, the average haploid genome size estimated for P. argus was 2.17 Gbp. Repetitive elements comprised 69.02% of the nuclear genome. In turn, 30.98% of the genome represented low- or single-copy sequences. A considerable proportion of repetitive sequences could not be assigned to known repeat element families. Taking into account only annotated repetitive elements, the most frequent belonged to Class I-LINE which were noticeably more abundant than Class I-LTR-Ty- 3/Gypsy, Class I-LTR-Penelope, and Class I-LTR-Ty-3/Bel-Pao elements. Satellite DNA was also abundant. The ribosomal operon in P. argus comprises, in the following order, a 5' ETS (length = 707 bp), ssrDNA (1,875 bp), ITS1 (736 bp), 5.8S rDNA (162 bp), ITS2 (1,314 bp), lsrDNA (5,387 bp), and 3' ETS (287 bp). A total of 1,281 SSRs were identified.
journal_name
PeerJjournal_title
PeerJauthors
Baeza JAdoi
10.7717/peerj.10554subject
Has Abstractpub_date
2020-12-17 00:00:00pages
e10554issn
2167-8359pii
10554journal_volume
8pub_type
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