Classification of unknown deep-sea snailfishes through morphological and genetic evidence


SOCIETY FOR INTEGRATIVE AND COMPARATIVE BIOLOGY
2021 VIRTUAL ANNUAL MEETING (VAM)
January 3 – Febuary 28, 2021

Meeting Abstract


P8-6  Sat Jan 2  Classification of unknown deep-sea snailfishes through morphological and genetic evidence Woodworth, B*; Fregosi, L; Suplicz, S; Palmeri, J; Gerringer, ME; State University of New York at Geneseo; State University of New York at Geneseo; State University of New York at Geneseo; State University of New York at Geneseo; State University of New York at Geneseo gerringer@geneseo.edu https://wp.geneseo.edu/gerringerlab/

The deep oceans make up more than 70% of the habitable biosphere on Earth, yet deep-sea environments remain largely unexplored. Snailfishes (Family Liparidae) live in cold and temperate ocean waters from the intertidal zone to more than 8,000 m deep sea and represent an important radiation into the deep oceans. Snailfishes share morphological characteristics including scaleless, tadpole-like bodies and commonly a ventral suction disk, yet they can vary by environment. Although more than 400 snailfishes have been described, the true diversity of and phylogenetic relationships within this widely distributed group remains unresolved. In this study, we focus on three deep-sea snailfishes that were caught in the Eastern Pacific Ocean off California. Using micro-CT (microcomputed tomography) scans, physical measurements, and meristics, we compared defining taxonomic characteristics such as body ratios and fin ray counts to the published literature. Morphologically, these individuals likely represent new species. Future analysis will include sequencing barcode genes (16S, COI, and Cyt-b) to position these species in a phylogenetic context. By comparing the morphological and genetic data from our unknown snailfish species to known taxa, we seek to further understanding of the vast biodiversity in our oceans.

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