Overview

Comprehensive Description

Biology

A rare shark known only from two specimens taken on the insular slopes, on or near the bottom (Ref. 244). Benthic (Ref. 58302). Oviparous (Ref. 50449).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Distribution

Range Description

The species is known from only two specimens in the tropical Pacific; one from the Hawaiian Islands and the other from the Banda Sea, south of Sulawesi, Indonesia.
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

Pacific Ocean: Banda Sea off southern Sulawesi and the Hawaiian Islands.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Western and Central Pacific: Eastern Indonesia, Hawaiian Islands (probably more widespread).
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Physical Description

Morphology

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Analspines: 0; Analsoft rays: 0
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Size

Maximum size: 500 mm TL
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Max. size

50.0 cm TL (male/unsexed; (Ref. 244))
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Diagnostic Description

Dark brown, without conspicuous markings on fins (Ref. 244).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Type Information

Type for Apristurus spongiceps
Catalog Number: USNM 51590
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1902
Locality: Vicinity of Modu Manu, or Bird Island, Center of Bird Island, S. 32 degrees, W. 12.8 miles [nautical]., Nihoa, Northwestern Hawaiian Islands, Hawaii, United States, Hawaiian Archipelago, Pacific
Depth (m): 572 to 1593
Vessel: Albatross
  • Type: Gilbert, C. H. 1905. Bulletin of the United States Fish Commission. 23 (for 1903): 579.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes

Source: National Museum of Natural History Collections

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Type for Apristurus spongiceps
Catalog Number: USNM 51590
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): United States Fish Commission (USFC)
Year Collected: 1902
Locality: Vicinity of Modu Manu, or Bird Island, Center of Bird Island, S. 32 degrees, W. 12.8 miles [nautical]., Nihoa, Northwestern Hawaiian Islands, Hawaii, United States, Hawaiian Archipelago, Pacific
Depth (m): 572 to 1593
Vessel: Albatross
  • Type: Gilbert, C. H. 1905. Bulletin of the United States Fish Commission. 23 (for 1903): 579.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes

Source: National Museum of Natural History Collections

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Spongehead Catshark is only known from two specimens that were taken on insular slopes, on or near the bottom between 572 and 1,482 m depth. The holotype is a 51.4 cm total length (TL) gravid female caught off the Hawaiian Islands. The paratype, collected south of Sulawesi, is a 10.5 cm TL juvenile.

Apristurus species are small, deepwater sharks that live on or near the bottom on the upper continental slope. Reproduction is oviparous with one egg per oviduct and egg cases are usually thick-walled and about 5 to 6.8 cm long and 2.5 to 2.9 cm wide. The anterior end of the case has a long weak fibrous thread on each corner. The posterior end usually has two small processes, each with a long coiled tendril. As in shallow water scyliorhinids the coiled tendrils are probably used to attach the egg cases to hard substrates and/or biogenic structures as they are laid.

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

Depth range based on 2 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 1255 - 1265
  Temperature range (°C): 3.146 - 3.146
  Nitrate (umol/L): 41.918 - 41.918
  Salinity (PPS): 34.544 - 34.544
  Oxygen (ml/l): 1.559 - 1.559
  Phosphate (umol/l): 2.910 - 2.910
  Silicate (umol/l): 130.298 - 130.298

Graphical representation

Depth range (m): 1255 - 1265
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
All rights reserved

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Known from seamounts and knolls
translation missing: en.license_cc_by_4_0

© WoRMS for SMEBD

Source: World Register of Marine Species

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Environment

bathydemersal; marine; depth range 572 - 1482 m (Ref. 11146)
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Depth range based on 2 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 1255 - 1265
  Temperature range (°C): 3.146 - 3.146
  Nitrate (umol/L): 41.918 - 41.918
  Salinity (PPS): 34.544 - 34.544
  Oxygen (ml/l): 1.559 - 1.559
  Phosphate (umol/l): 2.910 - 2.910
  Silicate (umol/l): 130.298 - 130.298

Graphical representation

Depth range (m): 1255 - 1265
 
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

Depth: 572 - 1482m.
From 572 to 1482 meters.

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

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Life History and Behavior

Life Cycle

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2015

Assessor/s
Duffy, C.A.J., Huveneers, C., Cordova, J. & Ebert, D.A.

Reviewer/s
Jew, M.L. & Nehmens, M.C.

Contributor/s

Justification

Spongehead Catshark (Apristurus spongiceps) is a deepwater catshark known only from a female holotype and a juvenile paratype. The holotype is 51.4 cm total length and was caught near Bird Island in the Hawaiian Islands. The juvenile paratype is 10.5 cm total length and was caught in the Banda Sea, south of Sulawesi, Indonesia. These specimens were collected on or near the bottom at depths between 572 and 1,482 m. Given that only two specimens have been encountered globally, Spongehead Catshark is currently assessed as Data Deficient.


History
  • 2004
    Data Deficient (DD)
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 information on population trend or abundance 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
Threats for Spongehead Catshark are unknown. Other species of deepwater Chondrichthyans are captured as bycatch in deepwater fisheries. Deepwater fisheries have expand at an annual rate of 62.5 m depth per decade from 1950-2004 (Watson and Morato 2013). If they continue to expand this species too may be captured incidentally in deepwater fisheries.
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

Data deficient (DD)
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Management

Conservation Actions

Conservation Actions
No conservation measures are currently in place for 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

Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: of no interest
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Wikipedia

Spongehead catshark

The spongehead catshark (Apristurus spongiceps) is a rare species of deep-sea catshark, family Scyliorhinidae.[2] This species was only known from two specimens taken in the Pacific Ocean: an adult from near Bird Island, Hawaii, and a juvenile from the Banda Sea off Sulawesi. They are found on or near the bottoms of insular continental slopes, at depths of 570 to 1,480 meters.[3] In 2002, the spongehead catshark was seen alive in its natural habitat for the first time, from the submersible Pisces IV at a depth of about a kilometer, on the Northampton Seamount off the northwestern Hawaiian Islands.[4]

The spongehead catshark has a thick body and head, with a moderately long, broadly rounded snout. The five pairs of gill slits are very small, and the septa between them are covered with unique pleats and folds that extend above and below, over the throat. The eyes are small and the nostrils are broad, with slit-like incurrent and excurrent openings. The mouth is long, large, and broadly arched, bearing prominently expanded dental bands. The two dorsal fins are about equal in size; the pectoral fins are rather small, while the pelvic fins are high and broadly rounded. The anal fin is short, high, and rounded. The caudal fin is moderately broad. The dermal denticles are closely set and give the skin a fuzzy or felt-like texture. It is dark brown, without fin markings.[3]

The adult holotype measured 51.4 cm long and the juvenile measured 10.5 cm long.[1] The juvenile was more slender than the adult, but shared the same distinctive pleated gills. As the holotype was a gravid female, the spongehead catshark is likely oviparous.[3] The spongehead catshark belongs to the A. spongiceps species group, characterized by a short, wide snout, seven to 12 valves in the spiral intestine, the upper labial furrows subequal to or shorter than the lower furrows, and a continuous supraorbital sensory canal.[1]

References[edit]

  1. ^ a b c Huveneers, C. and Duffy, C. (2004). Apristurus spongiceps. In: IUCN 2008. IUCN Red List of Threatened Species. Retrieved December 20, 2008.
  2. ^ Froese, Rainer and Pauly, Daniel, eds. (2008). "Apristurus spongiceps" in FishBase. December 2008 version.
  3. ^ a b c Compagno, Leonard J. V. (1984). Sharks of the World: An Annotated and Illustrated Catalogue of Shark Species Known to Date. Rome: Food and Agricultural Organization. ISBN 92-5-101384-5. 
  4. ^ Parrish, F. (Sep. 23, 2002). "Summary Log: Cruising Steeply through the Deep". NOAA Ocean Explorer. Retrieved on December 20, 2008.
Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Unreviewed

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!