Journal
ECOLOGY AND EVOLUTION
Volume 11, Issue 5, Pages 2040-2049Publisher
WILEY
DOI: 10.1002/ece3.7148
Keywords
average Aminoacid Identity; bayes tree; maximum Likelihood tree; penaeid phylogeny; penaeid taxonomy; penaeus sensu lato
Categories
Funding
- ICAR-CRP on Genomics project entitled Whole genome sequencing of Indian white shrimp Penaeus indicus
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The splitting of the Penaeus sensu lato into six new genera based on morphological features alone has been controversial in penaeid shrimp taxonomy. This study utilized the complete mitochondrial genome sequence to test the phylogenetic relations among the six genera, suggesting the potential collapse of the new genera to a single genus. The findings support the restoration of the old genus, Penaeus, instead of promoting the creation of new genera.
Splitting of the genus Penaeus sensu lato into six new genera based on morphological features alone has been controversial in penaeid shrimp taxonomy. Several studies focused on building phylogenetic relations among the genera of Penaeus sensu lato. However, they lack in utilizing full mitochondrial DNA genome of shrimp representing all the six controversial genera. For the first time, the present study targeted the testing of all the six genera of Penaeus sensu lato for phylogenetic relations utilizing complete mitochondrial genome sequence. In addition, the study reports for the first time about the complete mitochondrial DNA genome sequence of Fenneropenaeus indicus, an important candidate species in aquaculture and fisheries, and utilized it for phylogenomics. The maximum likelihood and Bayesian approaches were deployed to generate and comprehend the phylogenetic relationship among the shrimp in the suborder, Dendrobranchiata. The phylogenetic relations established with limited taxon sampling considered in the study pointed to the monophyly of Penaeus sensu lato and suggested collapsing of the new genera to a single genus. Further, trends in mitogenome-wide estimates of average amino acid identity in the order Decapoda and the genus Penaeus sensu lato supported restoration of the old genus, Penaeus, rather promoting the creation of new genera.
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