Overview

Comprehensive Description

Nomenclature

Voss, et al. (1998) consider this taxon the subspecies H. corona corona.

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Characteristics

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

  2. Photophores
    1. Head photophores Type 2a (e.g,. 2 photophores in Midline Series, 3 in Basal Arm IV Row).
  3. Suckers
    1. Sucker rings on arms IV with many low, square teeth on entire margin or only on distal margin.
    2. Rings on enlarged median suckers of manus with 33-38 triangular or narrow pointed teeth.

Comments

More details of the description can be found here.

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

  1. Photophores
    1. Type 2 head-photophore pattern (e.g., 2 Midline Series photophores, 3 or 4 Basal Arm IV Row photophores and no rogue photophore) .
    2. Basal Row with 7 photophores.
    3. Right Basal Series present.
    4. Arms IV without separate series of compound photophores at arm tip.
    5. Compound photophores on anterior half of ventral mantle uniform in size.
  2. Arms
    1. Suckers with smooth rings on arms I-III except at distal ends and occasionally on basal suckers.
    2. Suckers of arms IV with dentition.
  3. Tubercles
    1. Absent

The following table compares differences among members of the corona-group. H. cerasina and H. corona are very similar but occupy different oceans.

Character Photophores
Arms IV
No. of series
Suckers
Dentition
Manus, large
H. corona 3 33-38
H. berryi 4 28-34
H. cerasina 3 40-60

Except for the analysis of head photophores, this description is from Voss (1969) and Voss, et al. (1998).

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Distribution

Range Description

This species occurs in the Atlantic ocean (Voss et al. 1998).
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circum-(sub)tropical
  • UNESCO-IOC Register of Marine Organisms
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Geographical distribution

Type locality: 29°10'N, 88° 00'W. H. corona is found only in the Atlantic Ocean et al., 1998).

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

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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is only found in the Atlantic where its depth distribution ranges from the upper 100 to 1,500 m in depth (Voss et al. 1998). Small juveniles have been taken between 200 and 500 m at night, and 410 to 700 m during the day (Voss et al. 1998). Large individuals have been collected between 375-2,000 m (Voss et al. 1998). Mature females are unknown (Voss et al. 1998). Mature males (110-188 mm in mantle length) have short spermatophores (4.2-5.7 mm in length) (Voss et al. 1998). Overall, little is known about the biology and ecology of this species.

Histioteuthids typically undergo diel vertical migrations and often occur in high abundances (Voss et al. 1992). Sexually mature adults often demonstrate changes in photophore and body morphology, and descend to deeper depths (e.g. to more than 2,000 m in depth; Voss et al. 1998, Young and Vecchione 2007). Mating probably occurs at deep depths, although spawning may occur either at deep depths or in near surface waters depending on species (Voss et al. 1998). They are important in the diets of a variety of marine mammals, seabirds and fish (Voss et al. 1998).

Systems
  • Marine
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mesopelagic
  • UNESCO-IOC Register of Marine Organisms
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Depth range based on 50 specimens in 3 taxa.
Water temperature and chemistry ranges based on 41 samples.

Environmental ranges
  Depth range (m): 7.5 - 2204
  Temperature range (°C): 2.894 - 21.403
  Nitrate (umol/L): 0.189 - 39.114
  Salinity (PPS): 33.924 - 36.622
  Oxygen (ml/l): 1.868 - 6.230
  Phosphate (umol/l): 0.034 - 2.761
  Silicate (umol/l): 0.829 - 104.871

Graphical representation

Depth range (m): 7.5 - 2204

Temperature range (°C): 2.894 - 21.403

Nitrate (umol/L): 0.189 - 39.114

Salinity (PPS): 33.924 - 36.622

Oxygen (ml/l): 1.868 - 6.230

Phosphate (umol/l): 0.034 - 2.761

Silicate (umol/l): 0.829 - 104.871
 
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

Males are known to be mature at 110-188 mm ML; female size at maturity is unknown, largest female is 168 mm ML. Large, maturity-related, simple photophores absent (Voss, et al., 1998).

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2014

Assessor/s
Barratt, I. & Allcock, L.

Reviewer/s
Vecchione, M., Young, R. & Böhm, M.

Contributor/s
Duncan, C. & Carrete-Vega, G.

Justification
Histioteuthis corona is an oceanic species which has been assessed as Least Concern, as it has a wide geographic distribution making it less susceptible to human impact. However, further research is recommended in order to determine the precise distribution, population dynamics, life history and ecology, and potential threat processes affecting this species.
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Population

Population
There is no population information available for this species.

Population Trend
Unknown
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Threats

Major Threats
The threats to this species are not known.
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Management

Conservation Actions

Conservation Actions
There are no species-specific conservation measures in place for this species. Further research is recommended in order to determine the precise distribution, population dynamics, life history and ecology, and potential threat processes affecting this species.
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