Overview

Brief Summary

Introduction

Opisthoteuthis depressa is known only from waters off Japan. It reaches a size (measured from arm tip to arm tip) of just over 200 mm. Males have a distinctive arrangement of enlarged suckers.

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Comprehensive Description

Characteristics

Figure. Oral view of male O. depressa. Drawing from Sasaki, 1929.

  1. Arms and web
    1. Arms subequal.
    2. Web extends nearly to arm tips along dorsal margins of arms but web along ventral margins terminates well proximally.
    3. Suckers in female: very small, largest ca. 2 mm in diameter; number just over 50 on each arm; suckers uniform size over most of arm, decreasing in size proximally and distally.
    4. Suckers in males: greatly enlarged and crowded into biserial or triserial arrangement from sucker 5-20; maximum sucker size - 7 mm in diameter in adults.
    5. First cirri between suckers 1 and 2.

Comments

The above description is taken from Sasaki, 1929. More details of the description of O. depressa can be found here.

O. depressa differs from all members of the genus (where males are known), except O. mero and O. robsoni, in lacking distal fields or at least lacking an increase in sucker size in the distal fields. O. depressa differs from the other two in having more enlarged suckers on each arm of the proximal field (i.e., 16 vs 5-8).

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Distribution

Japanese waters. 130-1100 m (Nesis, 1982/87).

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Ecology

Habitat

bathyal
  • UNESCO-IOC Register of Marine Organisms
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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Depth range based on 4 specimens in 1 taxon.

Environmental ranges
  Depth range (m): 128 - 1074

Graphical representation

Depth range (m): 128 - 1074
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Opisthoteuthis depressa

The following is a representative barcode sequence, the centroid of all available sequences for this species.


There is 1 barcode sequence available from BOLD and GenBank.   Below is the sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen.  Other sequences that do not yet meet barcode criteria may also be available.

ACGTTATATTTCATTTTTGGGATTTGATCAGGTTTACTTGGTACATCACTAAGATCAATAATTCGAACAGAATTAGGACAACCAGGATCATTATTAAACGAT---GATCAATTATATAATGTAATTGTTACAGCTCATGCATTTGTAATAATTTTTTTTTTAGTTATACCTGTAATAATTGGAGGATTTGGAAATTGATTAATTCCCTTAATATTAGGAGCTCCCGATATAGCTTTCCCCCGTATAAATAATATAAGTTTTTGACTTCTTCCCCCCTCATTAACACTTTTACTAACTTCAGCTGCAGTAGAAAGAGGAGCTGGAACTGGATGAACTGTTTATCCCCCTTTATCAAGAAATTTAATACATACAGGCCCATCTGTTGATTTAGCAATTTTTTCACTTCATCTGGCAGGAGTTTCATCAATTTTAGGAGCAATTAACTTCATTACCACAATTATTAATATACGATGAGAAGGTATACAAATAGAACGATTACCTTTATTTGTATGATCCCTTTTAATTACTGCAATTCTCCTATTACTTTCCCTACCAGTTTTAGCAGGAGCTATTACAATACTTTTAACAGATCGAAACTTCAATACAACTTTTTTTTGACCC------------------------------------------------------------------------------------------------------------------GAGAGG
-- end --

Download FASTA File
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Opisthoteuthis depressa

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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