Overview

Distribution

Range Description

This species occurs in the cool temperate waters of the North Pacific. Its range includes the Kuroshio-Oyashio transition zone in the Northwest Pacific and the California current in the eastern Pacific (Tsuchiya 2009).
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Physical Description

Type Information

Paratype for Abraliopsis (Watasenia) felis Mcgowan & Okutani, 1968
Catalog Number: USNM 678793
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: female;
Preparation: Isopropyl Alcohol
Collector(s): Calcofi
Year Collected: 1953
Locality: Baja California, Mexico, North Pacific Ocean
Depth (m): 200
  • Paratype: Mcgowan, J. & Okutani, T. 1968. Veliger. 11(1): 72-79, pls. 9-10.
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Holotype for Abraliopsis (Watasenia) felis Mcgowan & Okutani, 1968
Catalog Number: USNM 678792
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: male;
Preparation: Isopropyl Alcohol
Collector(s): Calcofi
Year Collected: 1951
Locality: Baja California, Mexico, North Pacific Ocean
Depth (m): 200
  • Holotype: Mcgowan, J. & Okutani, T. 1968. Veliger. 11(1): 72-79, pls. 9-10.
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© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This small species was found to be abundant between the surface and 50 m in depth at night in the Kuroshio-Oyashio transition zone (Tsuchiya 2009). Oocytes in ovaries of mature females measure 1.5 mm in length (Young 1972). Enoploteuthids occur in mid-depths in the ocean and occasionally over the continental shelf (Norman 2003). They undergo diel vertical migrations, rising into the upper water column at night to feed (Norman 2003). Females spawn the small eggs individually into gelatinous strings (Norman 2003).

Systems
  • Marine
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Depth range based on 13 specimens in 1 taxon.
Water temperature and chemistry ranges based on 8 samples.

Environmental ranges
  Depth range (m): 32 - 718.5
  Temperature range (°C): 4.042 - 16.387
  Nitrate (umol/L): 2.342 - 41.464
  Salinity (PPS): 33.063 - 34.676
  Oxygen (ml/l): 0.578 - 5.636
  Phosphate (umol/l): 0.286 - 3.320
  Silicate (umol/l): 5.344 - 103.625

Graphical representation

Depth range (m): 32 - 718.5

Temperature range (°C): 4.042 - 16.387

Nitrate (umol/L): 2.342 - 41.464

Salinity (PPS): 33.063 - 34.676

Oxygen (ml/l): 0.578 - 5.636

Phosphate (umol/l): 0.286 - 3.320

Silicate (umol/l): 5.344 - 103.625
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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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
Young, R., Vecchione, M. & Böhm, M.

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

Justification
Abraliopsis felis is an oceanic species which has a wide geographic distribution and inhabits deep-water, making it less susceptible to human impact. It has therefore been assessed as Least Concern. 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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Wikipedia

Abraliopsis felis

Abraliopsis felis is a species of enoploteuthid cephalopod found in cool temperate water of the north Pacific Ocean. Female oocytes measure 1.5 mm in length.

References[edit]

  1. ^ Barratt, I. & Allcock, L. (2014). "Abraliopsis felis". IUCN Red List of Threatened Species. Version 2014.2. International Union for Conservation of Nature. Retrieved 28 August 2014. 
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