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Phylogeny of the Sepia pharaonis species complex (Cephalopoda: Sepiida) based on analyses of mitochondrial and nuclear DNA sequence data

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Title Phylogeny of the Sepia pharaonis species complex
(Cephalopoda: Sepiida) based on analyses of
mitochondrial and nuclear DNA sequence data
Not Available
 
Creator Anderson,Frank E
Engelke,Ryan
Jarrett,Kelsey
Valinassab,Tooraj
Mohamed,K S
Asokan,P K
Zacharia,P U
Nootmorn,Praulai
Chotiyaputta,Cherdchinda
Dunning,Malcolm
 
Subject sepia pharaonis
cephalopoda
 
Description Not Available
The pharaoh cuttlefish, Sepia pharaonis Ehrenberg, 1831, is a commercially fished species found from
Japan to East Africa. Previous morphological and genetic work (the latter based on the 16S rRNA
mitochondrial gene) suggested that S. pharaonis is a species complex, but relationships within the
complex remained unresolved. To clarify these relationships, we have sequenced an additional mitochondrial
gene region (cytochrome oxidase subunit I) and a nuclear gene region (rhodopsin) from
over 50 specimens from throughout the range of S. pharaonis. We have also added sequence data from
two specimens of Sepia ramani Neethiselvan, 2001, collected in southeastern India. Sepia ramani is a
species that is morphologically very similar to S. pharaonis, and there is some question regarding its
status as a distinct species. Phylogenetic analyses of a dataset comprising all three-gene regions
revealed a monophyletic S. pharaonis complex consisting of a western Indian Ocean clade, a northeastern
Australia clade, a Persian Gulf/Arabian Sea (‘Iranian’) clade, a western Pacific clade and a
central Indian Ocean clade. Relationships among these clades remain somewhat poorly supported
except for a clade comprising the Iranian clade, the western Pacific clade and the central Indian
Ocean clade. One S. pharaonis specimen was collected in the Arabian Sea, but was found to be a
member of the western Indian Ocean clade, suggesting that gene flow between these regions has
either occurred recently or is ongoing. Both specimens of S. ramani are members of the S. pharaonis
complex, but their mtDNA haplotypes are not closely related – one is a member of the central
Indian Ocean clade, while the other is rather distantly related to the northeastern Australia clade.
We suggest that ‘S. pharaonis’ may consist of several species, but morphological work is needed to
clarify species-level taxonomy within this complex.
Not Available
 
Date 2021-09-16T06:09:59Z
2021-09-16T06:09:59Z
2011
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/62881
 
Language English
 
Relation Not Available
 
Publisher Oxford University Press