Abstract
Rhincodon typus is a keystone and indicator species in marine ecosystems. Meanwhile, R. typus has been listed on the IUCN red list of vulnerable species. Here we used ONT platform to determine the full-length (FL) transcriptome of R. typus and obtained 14,930 FL transcripts. Among all FL transcripts, 14,915 transcripts were covered 11,892 genetic loci and 1,642 novel genetic loci were further found. Meanwhile, we identified 714 novel transcripts by compared FL transcripts with the R. typus genome. Based on FL transcripts, we also predicted the distribution patterns of ASs, LncRNAs, polyAs, CDSs and methylation sites on FL transcriptome of R. typus. Furthermore, a total of 31,021 (97.86%) CDSs can obtained annotation information. Overall, our work firstly provided the FL transcriptome and these sequences complete the annotated R. typus genome information. Furthermore, these information are a potential resource to study biological processes of R. typus.
Highlights
The whale shark, Rhincodon typus is the exclusive species of the genus Rhincodon and it belonging to the family Rhincodontidae under the order Orectolobiformes (Smith, 1829)
All consensus sequences were further compared to the reference R. typus genome for remove redundant, and 14,930 FL transcripts were obtained
Fusion Transcripts Based on the identification criteria, we identified 175 fusion transcripts in the R. typus FL transcriptome, all of which consisted of two transcripts
Summary
The whale shark, Rhincodon typus is the exclusive species of the genus Rhincodon and it belonging to the family Rhincodontidae under the order Orectolobiformes (Smith, 1829). Rhincodon typus is widely distributed in the tropical and temperate seas from latitude 30◦N to 35◦S and has rarely been found in waters with surface temperature below 21◦C (Compagno, 2001; Colman, 2005; Rowat and Brooks, 2012; Sequeira et al, 2014). The head of R. typus is flat and wide, and there are many checkerboard shaped white spots and horizontal stripes on the dorsal part (Compagno, 2001). R. typus plays an important role in marine ecosystem due to its special biological characteristics and lifestyle, which can be used as an indicator of marine ecosystem stability
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