Eptatretus longipinnis 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Myxini Myxiniformes Myxinidae

Scientific Name: Eptatretus longipinnis Strahan, 1975
Common Name(s):
English Longfin Hagfish

Assessment Information [top]

Red List Category & Criteria: Vulnerable B2ab(iii) ver 3.1
Year Published: 2011
Date Assessed: 2009-11-10
Assessor(s): Mincarone, M.M.
Reviewer(s): Polidoro, B., Knapp, L. & Carpenter, K.E.
This species is only known from southern Australia, and has an extent of occurrence of less than 15,000 km² and its area of occupancy is likely less 2,000 km². It is not targeted by fisheries, but it is threatened by habitat loss and degradation from prawn trawling in at least some parts of its distribution and throughout its depth range. In addition, it is also occasionally caught and discarded as bycatch in gillnet and trap fisheries. Given its relatively restricted range and ongoing declines in habitat quality, it is listed as Vulnerable. This species occurs in a shallow water habitat, and with a known restricted distribution within an area of active fisheries, additional information is needed for a reassessment of its status as this species may warrant being placed in a higher threat category.

Geographic Range [top]

Range Description:This species is found off the southeast coast of South Australia, between Robe and Port MacDonnell (Mincarone and Fernholm 2010). The species is endemic to this region. The south coast of Australia has been surveyed and no records have been found east or west of its currently known geographic range.
Countries occurrence:
FAO Marine Fishing Areas:
Indian Ocean – eastern
Additional data:
Number of Locations:1
Lower depth limit (metres):40
Upper depth limit (metres):14
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The population is known only from eight museum specimens collected from through scientific and commercial trawling and no records have been found extending west and east of its current distribution range. The coast of South Australia has been extensively scientifically surveyed (H. Larson pers. comm. 2009).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is known from specimens collected in shallow waters, at depths from 14-40 m. It occurs on soft bottoms of the continental shelf (Paxton et al. 1989, Mincarone and Fernholm 2010). The copulatory organ is absent in 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).

Threats [top]

Major Threat(s): This species is not known to be targeted in fisheries, but it is reportedly part of the discarded bycatch in the gillnet, hook and trap fishery (Bromhead and Bolton 2005) and has occasionally been recorded as bycatch in rock lobster pots (OZCAM database 2007). Prawn bottom trawling is occurring within the distribution and known depth range of this species, and is likely having a negative impact on habitat quality.

Conservation Actions [top]

Conservation Actions: The south coast of Australia is managed for conservation and fishing through the Southern Marine Regional Plan. Marine Protected Areas in close proximity to the species' range include Aldinga Reef and Port Philips Head. More research is needed on the species' biology, population size, distribution and impacts.

Citation: Mincarone, M.M. 2011. Eptatretus longipinnis. The IUCN Red List of Threatened Species 2011: e.T196030A8995360. . Downloaded on 19 June 2018.
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