Overview

Brief Summary

Introduction

H. atlantica has a circumglobal distribution in southern waters and reaches a size of, at least, 258 mm ML.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Comprehensive Description

Characteristics

  1. Photophores
    1. Large, compound photophores with posteriorly directed reflectors (see black arrows in photograph to the right).
    2. Arms IV with 4 longitudinal series on arm base (dorsal series with organs of mixed sizes).
    3. Terminal third of each arm I-III with row of large, elliptical, darkly pigmented, simple organs.
  2. Figure. Ventral view of an anterior segment of the ventral mantle of H. atlantica, 57 mm ML, 48°S, 145°E, USNM cat. no. 814656. Black arrows point to the Posterior reflector of large photophores; white arrows point to small photophores. Photograph by R. Young.

Comments

More details of the description can be found here.

Species of the reversa-group are distinguished by the following characters:

  1. Compound photophores
    1. Large and small photophores intermixed on ventral surface of mantle .
    2. 18 photophores (17 large and 1 small) around right eyelid.
  2. Beak
    1. Weakly developed median ridge on each lateral wall.
  3. Tubercles
    1. Absent.

This species is most easily separated from other members of the reversa group by (1) the arrangement of photophores on arms IV (H. reversa - 4 series, dorsal one with all small organs; H. eltaninae - 3 series), (2) the absence of specialized arm-tip photophores in H. eltaninae and H. reversa.

The posteriorly directed reflectors are also known in H. reversa, but the condition in H. eltaninae is unknown. With the exception of information on the posterior reflectors of the compound photophores, the above information is from Voss (1969).

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Distribution

Range Description

This species has a circum-global distribution in the south southern hemisphere (Young and Vecchione 2000), where its distribution overlaps with its congener H. eltaninae. It is found in Southern Subtropical Convergence and fringing subtropical waters between 30-60 ºS.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Geographical distribution

Histioteuthis atlantica exhibits a circumglobal southern distribution. Its distribution strongly overlaps with the more southern distribution of its close relative H. eltaninae. Histioteuthis atlantica is regularly found over ocean basins, shelf and plateau areas. (Voss, et al., 1998)

Figure. Chart or the geographical distribution of H. atlantica. Modified from Voss, et al., 1998.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is a small to medium sized squid that occurs in the open ocean, as well as the continental shelf and slope (Voss et al. 1998). It is abundant in the Atlantic sector of the Southern Subtropical Convergence and in central Atlantic convergence waters (Voss et al. 1992). Juveniles have been found in the upper 200 m at night but in deeper (500-1,000 m) waters during the day (Voss et al. 1998). Mature and maturing specimens have been taken between 300 and 2,000 m at night, and 900 to 1,000 m during the day (Voss et al. 1998). Subadults have also been caught on the bottom between 700 and 844 m at night (Voss et al. 1998). Although mature females are unknown (Young and Vecchione 2000), females near to maturity are known, and have mantle lengths ranging from 114 to 149 mm (Voss et al. 1998). Mature males, recognisable by large numbers of small photophores covering their posterior mantles, have short spermatophores (e.g. 4.4 and 10.6 mm in length, from two individuals with mantle lengths of 87 and 258 mm, respectively; Voss et al. 1998). Spawning probably occurs in the open ocean (Voss et al. 1992).

Systems
  • Marine
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

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

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

epi-bathypelagic
  • 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

Default rating: 2.5 of 5

Depth range based on 40 specimens in 1 taxon.
Water temperature and chemistry ranges based on 39 samples.

Environmental ranges
  Depth range (m): 23 - 3316
  Temperature range (°C): 1.059 - 15.850
  Nitrate (umol/L): 3.633 - 37.769
  Salinity (PPS): 34.231 - 35.376
  Oxygen (ml/l): 3.278 - 6.454
  Phosphate (umol/l): 0.415 - 2.580
  Silicate (umol/l): 2.337 - 112.977

Graphical representation

Depth range (m): 23 - 3316

Temperature range (°C): 1.059 - 15.850

Nitrate (umol/L): 3.633 - 37.769

Salinity (PPS): 34.231 - 35.376

Oxygen (ml/l): 3.278 - 6.454

Phosphate (umol/l): 0.415 - 2.580

Silicate (umol/l): 2.337 - 112.977
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Life History and Behavior

Life Cycle

Life History

Numerous small, darkly pigmented, simple photophores on the posterior region of the mantle only appear at maturity. The number and density of the photophores increases with size of the squid. Mature females are unknown. (Voss, et al., 1998)

Figure. Ventral and dorsal views of the mantle of a mature male of H. atlantica, 115 mm ML, 40° 18'S, 39° 12'W. Drawing from Voss, et al., 1998..

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Histioteuthis atlantica

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
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)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

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 atlantica 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.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Population

Population
There is no population information available for this species.

Population Trend
Unknown
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Threats

Major Threats
The threats to this species are unknown.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

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.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default 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!