Consolidated data on the phylogeny and evolution of the family Tritoniidae (Gastropoda: Nudibranchia) contribute to genera reassessment and clarify the taxonomic status of the neuroscience models Tritonia and Tochuina

PloS One
Tatiana Korshunova, Alexander Martynov

Abstract

Nudibranch molluscs of the family Tritoniidae are widely used neuroscience model systems for understand the behavioural and genetic bases of learning and memory. However species identity and genus-level taxonomic assignment of the tritoniids remain contested. Herein we present a taxonomic review of the family Tritoniidae using integration of molecular phylogenetic analysis, morphological and biogeographical data. For the first time the identity of the model species Tritonia tetraquetra (Pallas, 1788) and Tritonia exsulans Bergh, 1894 is confirmed. T. tetraquetra distributes across the large geographic and bathymetric distances in the North-Eastern (NE) and North-Western (NW) Pacific. In turn, at NE Pacific coasts the separate species T. exsulans is commonly occured. Thus, it reveals a misidentification of T. tetraquetra and T. exsulans species in neuroscience applications. Presence of more hidden lineages within NW Pacific T. tetraquetra is suggested. The long lasting confusion over identity of the species from the genera Tritonia and Tochuina is resolved using molecular and morphological data. We also disprove a common indication about "edible T. tetraquetra" at the Kuril Islands. It is shown that Tochuina possesses specialize...Continue Reading

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Citations

May 28, 2021·Molecular Phylogenetics and Evolution·Juan MolesMichael Schrödl

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Datasets Mentioned

BETA
KJ486726
EF133470
AY345026

Methods Mentioned

BETA
PCR
dissection

Software Mentioned

MrBayes
MrModelTest
LOCKSS
PubMed
MEGA7
Mesquite
RAxML
Gblocks
JSM
ABGD

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