Overview

Brief Summary

Introduction

O. persephone was described from 8 specimens taken off Western Australia the largest of which, apparently, is the holotype which is 330 mm in arm span (arm tip to arm tip). This species needs to be redescribed from new material from the type locality.

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Comprehensive Description

Characteristics

  1. Arms and web
    1. Female: largest suckers possibly numbers 12-18, nearly uniform over much of arm.
    2. Cirri with narrow pockets into which they can contract.
    3. Sucker numbers (holotype): arm I - 78, arm II - 78, arm III - 72, arm IV - 72. [O'Shea states that arm sucker counts reach 93.]
    4. Figure. Oral view of the right dorsal arm (suckers 7-22) of O. persephone with retracted cirri, holotype. Drawing from Berry (1918).

Comments

The above description is taken from Berry (1918) except where indicated otherwise. More details of the description of O. persephone can be found here although the species has been incompletely described.

O. persephone differs from the New Zealand species O. mero in the number of primary gill lamellae (almost always 6 vs almost always 7) (O'Shea, 1999). It differs from the sympatric O. pluto in its pigmentation (Berry, 1918) and fewer gill lamellae (usually 6 vs 8).

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Distribution

Type locality: 42 miles south and east of Genoa Peak, Victoria, in the great Australian bight, 480 m. Known also from off Eucla, Western Australia from depths of 277 - 554 m (Berry, 1918).

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Physical Description

Type Information

Paratype for Opisthoteuthis persephone Berry, 1918
Catalog Number: USNM 816361
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Alcohol (Ethanol)
Locality: Genoa Peak, 42 Miles S & E Of, Victoria, Australia, South Pacific Ocean
Depth (m): 475 to 475
Vessel: Endeavour R/V
  • Paratype: Berry, S. S. 1918. Biol. Results Fish. Exp. Endeavour. 4(5): 290-294.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

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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 18 specimens in 1 taxon.
Water temperature and chemistry ranges based on 7 samples.

Environmental ranges
  Depth range (m): 274 - 648
  Temperature range (°C): 8.231 - 10.927
  Nitrate (umol/L): 11.847 - 17.458
  Salinity (PPS): 34.549 - 34.937
  Oxygen (ml/l): 4.617 - 5.483
  Phosphate (umol/l): 0.934 - 1.292
  Silicate (umol/l): 5.536 - 11.018

Graphical representation

Depth range (m): 274 - 648

Temperature range (°C): 8.231 - 10.927

Nitrate (umol/L): 11.847 - 17.458

Salinity (PPS): 34.549 - 34.937

Oxygen (ml/l): 4.617 - 5.483

Phosphate (umol/l): 0.934 - 1.292

Silicate (umol/l): 5.536 - 11.018
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Disclaimer

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