Overview

Comprehensive Description

Nomenclature

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

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

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).

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

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

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

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.

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Ecology

Habitat

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

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

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.

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

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).

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!