Overview

Brief Summary

Introduction

Material of Histioteuthis meleagroteuthis examined by Voss et al. (1998) and earlier workers cited therein found no indication of population differentiation over the broad geographical, but interrupted, range of this species. However some variation in the sucker enlargement pattern of the club is a possible exception. Additional squid are needed to evaluate the latter. Also, descriptions of spermatophores from different geographical regions are needed.

Brief diagnosis:

A Histioteuthis ...

  • with 8-10 series of photophores on arm IV.
  • with tubercules.

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Comprehensive Description

Characteristics

  1. Head
    1. Beaks: Descriptions can be found here: Lower beak; upper beak.

  2. Arms
    1. Tubercules form serrate ridge along aboral midline proximally on arms I-III. on middorsal line on anterior 1/2-2/3 of mantle beneath epithelium and on proximal half of arms I-III.
  3. Mantle
    1. Tubercules form serrate ridge along middorsal line on anterior 1/2-2/3 of mantle beneath epithelium and on proximal half of arms I-III.

      Figure. Dorsolateral view of the mantle tubercules of H. meleagroteuthis, showing undamaged region covered by skin adjacent to a damaged area (center left) with skin lost. Photograph by M. Vecchione.

Comments

More details of the description can be found here.

Species of the meleagroteuthis-group are distinguished by the following characteristics:

  1. Photophores
    1. In 8-10 series on arm IV base.
    2. Usually 19-22 photophores on right eyelid.
    3. Compound photophores of uniform size, small and densely packed on anterior 3/4 of ventral mantle.

H. meleagroteuthis is easily separated from the other member of the meleagroteuthis-group, H. heteropsis, by the presence of tubercles.

The above information is taken from Voss (1969) and Voss, et al. (1998).

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Distribution

circum-(sub)tropical
  • 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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Geographical distribution

Type locality: South Pacific, north of New Zealand at 35°45'S, 176°20'E, 549-686 m depth.

H. meleagroteuthis has been taken throughout much of the world's tropical and subtropical waters. However, it appears to be absent from the oligotrophic subtropical waters south of Bermuda, the Gulf of Mexico and Caribbean Sea in the Atlantic and transitional waters of the California and Peru-Chile currents (habitat occupied by its close relative H. heteropsis) and the northern tropical central waters around Hawaii in the Pacific (Voss, et al., 1998).

Figure. Distribution chart of H. meleagroteuthis, modified from Voss et al., 1998.

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Ecology

Habitat

Known from seamounts and knolls
  • Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication.
Creative Commons Attribution 3.0 (CC BY 3.0)

© WoRMS for SMEBD

Source: World Register of Marine Species

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mesopelagic
  • 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 70 specimens in 1 taxon.
Water temperature and chemistry ranges based on 70 samples.

Environmental ranges
  Depth range (m): 45 - 3109
  Temperature range (°C): 2.715 - 21.397
  Nitrate (umol/L): 0.495 - 36.323
  Salinity (PPS): 34.336 - 36.588
  Oxygen (ml/l): 1.558 - 6.416
  Phosphate (umol/l): 0.046 - 2.531
  Silicate (umol/l): 0.908 - 94.535

Graphical representation

Depth range (m): 45 - 3109

Temperature range (°C): 2.715 - 21.397

Nitrate (umol/L): 0.495 - 36.323

Salinity (PPS): 34.336 - 36.588

Oxygen (ml/l): 1.558 - 6.416

Phosphate (umol/l): 0.046 - 2.531

Silicate (umol/l): 0.908 - 94.535
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Life History and Behavior

Life Cycle

Life History

Females mature at 114 mm ML (spent female, 27°S, 37°W); males at 65-102 mm ML (Voss, et al., 1998).

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