Overview

Distribution

Range Description

This species is known only from the type locality, northeast of Dawson Island, Strait of Magellan (Wisner and McMillan 1995).
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Southeast Pacific: ranging eastward to the Straits of Magellan in the Southwest Atlantic.
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Straits of Magellan.
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Physical Description

Size

Maximum size: 570 mm TL
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Max. size

57.0 cm TL (male/unsexed; (Ref. 31276))
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
The only two specimens known were taken at mid-channel waters, from 300-302 m depth (Wisner and McMillan 1995).

The copulatory organ is absent for this species. The gonads of hagfishes are situated in the peritoneal cavity. The ovary is found in the anterior portion of the gonad, and the testis is found in the posterior part. The animal becomes female if the cranial part of the gonad develops or male if the caudal part undergoes differentiation. If none develops, then the animal becomes sterile. If both anterior and posterior parts develop, then the animal becomes a functional hermaphrodite. However, hermaphroditism being characterised as functional needs to be validated by more reproduction studies (Patzner 1998).

Systems
  • Marine
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Environment

bathydemersal; non-migratory; marine; depth range 300 - 300 m (Ref. 58018)
  • Bogutskaya, N.G. 2007 Preliminary assignment of coordinates to type localities in the Catalog of Fishes. Unpublished dbf file. (Ref. 58018)
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Life History and Behavior

Life Cycle

Copulatory organ absent. The gonads of hagfishes are situated in the peritoneal cavity. The ovary is found in the anterior portion of the gonad, and the testis is found in the posterior part. The animal becomes female if the cranial part of the gonad develops or male if the caudal part undergoes differentiation. If none develops, then the animal becomes sterile. If both anterior and posterior parts develop, then the animal becomes a functional hermaphrodite. However, hermaphroditism being characterised as functional needs to be validated by more reproduction studies (Ref. 51361 ).
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
Mincarone, M.M.

Reviewer/s
Polidoro, B., Knapp, L. & Carpenter, K.E.

Contributor/s

Justification
This species is only known from the holotype and paratype collected in the Straits of Magellan, and has not been recorded since 1970. Although this is not a heavily surveyed area, localized threats such as shipping, dredging, and fishing activities may pose a threat to this species. It is listed as Data Deficient. More information is needed on this species distribution, population, biology, life history and impact of potential threats.
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Population

Population
This species is only known from the holotype and paratype. The last collected record dates back to 1970 but this is not a heavily surveyed area.

Population Trend
Unknown
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Threats

Major Threats
There are no known direct threats to this species, but indirect threats from shipping activity and localized fishing likely exist.
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Data deficient (DD)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
There are no conservation measures in place, but more research is needed on this species' biology, population size, distribution and the impact of small-scale fishing and shipping activity.
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