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Overview

Comprehensive Description

Biology

Found on the insular slopes. Ovoviviparous (Ref. 205).
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Distribution

Range Description

Eastern central Pacific: endemic to the Hawaiian Islands (Molokai) (Compagno in prep.).
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Hawaiian Islands: Hancock Seamounts to Hawai'i Island.
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Eastern Central Pacific: Hawaiian Islands.
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Physical Description

Size

Maximum size: 460 mm TL
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Max. size

46.0 cm TL (male/unsexed; (Ref. 247))
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Type Information

Type for Etmopterus villosus Gilbert
Catalog Number: USNM 51583
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Preparation: Illustration; Radiograph
Year Collected: 1902
Locality: South coast of Molokai Island. Lae-o Ka Laau Light, N. 35 deg., W. 6.1', Molokai, Hawaii, United States, Hawaiian Islands, Pacific
Depth (m): 406 to 911
Vessel: Albatross
  • Type: Gilbert, C. H. 1905. Bulletin of the United States Fish Commission. 23 (for 1903): 580, pl. 66.
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Ecology

Habitat

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.
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Habitat and Ecology

Habitat and Ecology
Bathydemersal deepwater species found at 406–911 m on or near the bottom on insular slopes (Compagno in prep.). The holotype is immature at 17 cm TL and maximum size is reported to 46 cm TL; however the species is known from very few specimens and its biology is virtually unknown (Compagno in prep.).

Systems
  • Marine
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Depth: 406 - 911m.
From 406 to 911 meters.

Habitat: bathydemersal. Found on the insular slopes.
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Environment

benthopelagic; marine; depth range 280 - 1610 m (Ref. 58302)
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Depth range based on 1 specimen in 1 taxon.

Environmental ranges
  Depth range (m): 50000 - 50000
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Life History and Behavior

Life Cycle

Distinct pairing with embrace (Ref. 205).
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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
2009

Assessor/s
McCormack, C.

Reviewer/s
Valenti, S.V., Stevens, J. & Fowler, S.L. (Shark Red List Authority)

Contributor/s

Justification
Etmopterus villosus is a little known lanternshark endemic to Molokai in the Hawaiian Islands and found on or near the bottom at 406–911 m depth. The species is known from few specimens and has been reported to a maximum of 46 cm total length. Although this species is poorly known, it occurs beyond the range of current fishing pressure and there is no reason to suspect that the population has declined. It is therefore assessed as Least Concern, but if deepwater fisheries begin to operate within this endemic species’ limited range in the future, it will need to be reassessed.
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Population

Population
Known from very few specimens.

Population Trend
Unknown
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Threats

Major Threats
The bottom fish fishery operating in the Hawaiian Archipelago targets deepsea snappers (Etelis and Pristipomoides species), which are most common at <300 m depth (DLNR 2002). This species occurs beyond current fishing pressure. Any development of fisheries to greater depths in the region should be closely monitored to ensure that this endemic species is not adversely affected.
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
The biology of this species is virtually unknown. Like many deeper water species more information on biology, ecology and importance in fisheries are required to further assess status and any future conservation needs. Further surveys would benefit in the collection of data on the wider depth distribution and range of the species.

The development and implementation of management plans (national and/or regional e.g., under the FAO International Plan of Action for the Conservation and Management of Sharks: IPOA-Sharks) are required to facilitate the conservation and management of all chondrichthyan species in the region.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: of no interest
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Wikipedia

Hawaiian lanternshark

The Hawaiian lanternshark (Etmopterus villosus) is a shark of the family Etmopteridae found around the Hawaiian Islands, between latitudes 23°N and 19°N, at depths between 400 and 910 m. Its maximum length is at least 46 cm.

Reproduction is presumed to be ovoviviparous.

References[edit]

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