Overview

Distribution

Range Description

This species is only known from a single seamount on the Foundation Seamount Chain (35°S 120°W), in the southeast Pacific Ocean, to the west of Chile (Webber and Booth 1995).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is found on, or near seamount crests at a depth range of 140-180 m (Webber and Booth 1995). This species is thought to be long-lived, late to mature, with a low fecundity (South Pacific Regional Fisheries Management Organisation 2007).

Systems
  • Marine
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Jasus caveorum

The following is a representative barcode sequence, the centroid of all available sequences for this species.


There is 1 barcode sequence available from BOLD and GenBank.   Below is the sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen.  Other sequences that do not yet meet barcode criteria may also be available.

GGTATAGTCGGGACTNCTCTAAGTCTCATTATTCGTGCTGAATTAGGACAACCAGGTAGGTTAATCGGAGAC---GATCAGATTTACAACGTNGTAGTAACTGCTCACGCATTTGTAATAATTTNTTTTATGGTAATGCCAATTATAATTGGGGGGTTTGGAAACTGATTAGTGCCTCTAATACTGGGGGCCCCAGACATGGCTTTTCCTCNTNTAAACAACATAAGATTTTGACTTCTGCCGCCTTCCCTAACACTTCTGCTAACTAGTGGCATANTACAAAGAGGTGTCGGGACAGGTTGAACAGTCTACCCTCCCCTANCANCATCCGTAGCACATGCCGGTGCCTCAGTAAACCNTGGAATTTTTTCACTTCACTTAGCTGGTGTTTCTTCTATTTTAGGGGCTGTNAATTTCATAACTACAGTTANTNACATGCGANCTTCCGGAATTACTATAGACCGTATGCCCNTATTTGTTTGANNNGTATTTATCNNNNNTATCTTACTACTTTTATCTCTT
-- end --

Download FASTA File
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Statistics of barcoding coverage: Jasus caveorum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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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
2011

Assessor/s
MacDiarmid, A., Butler, M., Cockcroft, A. & Wahle, R.

Reviewer/s
Collen, B., Livingstone, S. & Richman, N.

Contributor/s
Batchelor, A., De Silva, R., Dyer, E., Kasthala, G., Lutz, M.L., McGuinness, S., Milligan, H.T., Soulsby, A.-M. & Whitton, F.

Justification
Jasus caveorum has been assessed as Data Deficient. This species has a relatively small range, and its biology indicates that it may be susceptible to heavy fishing pressure. It is possible that this species was heavily fished during the 1960s though this cannot be confirmed. It is fished occasionally by New Zealand fishers, however it is not known what impact this is having on the population. This species occurs in international waters and so is not subject to any management restrictions. Further research is needed on the fishing effort and abundance of this species before a more accurate assessment of conservation status can be made.
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Population

Population
Up until 1995, this species was known from 12,000 individuals (A. MacDiarmid pers. comm. 2009).

Population Trend
Unknown
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Threats

Major Threats
It is possible that this species was fished during the 1960s, when a species matching the description of this one, was taken in significant quantites in on the Foundation Seamount Chain but this cannot be confirmed (South Pacific Regional Fisheries Management Organisation 2007).

This species has been occassionally fished by New Zealand fishers since its discovery in 1995. Approximately 20 t has been taken and marketed fresh in New Zealand (Booth and Webber 2001).

The status of the stocks is unknown (South Pacific Regional Fisheries Management Organisation 2007).
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Management

Conservation Actions

Conservation Actions
There are no species-specific conservation measures in place for this species. Further research is needed on the fishing effort and abundance of this species.
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Wikipedia

Jasus caveorum

Jasus caveorum is a species of spiny lobster found on a single seamount in the southeastern Pacific Ocean, discovered in 1995 by fishermen from New Zealand. It is most similar to Jasus frontalis from the nearby Juan Fernández Islands, but is more closely related to species from the Atlantic and Indian Oceans.

Contents

Distribution

Map of the Pacific Ocean, with the Foundation Seamounts marked.
Map of the Pacific Ocean, with the Foundation Seamounts marked.
Location of the Foundation Seamounts in the Pacific Ocean

Jasus caveorum is known from a single seamount in the Foundation Seamounts chain, around 35°S 120°W / 35°S 120°W / -35; -120, approximately 2,100 kilometres (1,300 mi) south-east of Pitcairn Island, and 4,500 km (2,800 mi) west of the Juan Fernández Islands, Chile.[3] The seamount has two peaks at a depth of 140 metres (460 ft), separated by a col at a depth of 320 m (1,050 ft).[3] J. caveorum is the only species in the genus whose range is not associated with any land that rises above sea level.[3]

J. caveorum was discovered in 1995 by the New Zealand fishing vessel FV David Baker, owned by Southern Seafoods. Commercial lobster traps were laid at various depths, down to 300 m (980 ft); specimens of J. caveorum were recovered from depths down to 180 m (590 ft), but mostly less than 150 m (490 ft).[3]

Ecology and conservation

The ecology of Jasus caveorum is poorly known. Its diet is assumed to be made up chiefly of invertebrates.[4] Most adult individuals are infested with a small stalked barnacle of unknown identity; the same barnacle infests crabs of the genus Chaceon in the same locality.[3]

Since it occurs in international waters, there are no restrictions on fishing J. caveorum.[1] It is occasionally caught by fishermen from New Zealand, and may have been fished more intensively in the 1960s.[1] The state of the stock is unknown, and the species is listed as Data Deficient on the IUCN Red List.[1]

Description

The specimens of Jasus caveorum examined for the species description varied in carapace length from 104 to 129 millimetres (4.1 to 5.1 in). Morphologically, J. caveorum is most similar to J. frontalis, which lives around the Juan Fernández and Desventuradas Islands.[3] It is, however, more closely related to J. tristani and J. paulensis from Tristan da Cunha and the islands of the southern Indian Ocean, respectively.[5] The two species differ in that J. frontalis has sculpturing on the second to sixth abdominal tergae, which is missing in J. caveorum, and in the presence of a row of setae and small spines on the second pereiopod of J. caveorum, but not on that of J. frontalis.[3]

Taxonomy

Jasus caveorum was described in 1995 by W. R. Webber of the Museum of New Zealand Te Papa Tongarewa, and J. D. Booth of the National Institute of Water and Atmospheric Research. The specific epithet caveorum commemorates Joe Cave, Helen Cave and Ernie Cave; it is also a play on the word "cave", since the species occurs in a hidden area, with no above-ground presence.[3]

References

  1. ^ a b c d A. MacDiarmid, M. Butler, A. Cockcroft & R. Wahle (2011). "Jasus caveorum". IUCN Red List of Threatened Species. Version 2011.2. International Union for Conservation of Nature. http://www.iucnredlist.org/apps/redlist/details/185085. Retrieved December 10, 2011. 
  2. ^ Tin-Yam Chan (2010). "Jasus caveorum Webber & Booth, 1995". World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=382878. Retrieved December 10, 2011. 
  3. ^ a b c d e f g h W. R. Webber & J. D. Booth (1995). "A new species of Jasus (Crustacea: Decapoda: Palinuridae) from the eastern South Pacific Ocean". New Zealand Journal of Marine and Freshwater Research 29 (4): 613–622. doi:10.1080/00288330.1995.9516692. 
  4. ^ "Information describing Jasus caveorum fisheries relating to the South Pacific Regional Fisheries Management Organisation". February 20, 2007. SPRFMO-III-SWG-12. http://www.southpacificrfmo.org/assets/Species-Profiles-Final/12-REVISED-J-caveorum-profile-Science-III.pdf. 
  5. ^ J. R. Ovenden, J. D. Booth and A. J. Smolenski (1997). "Mitochondrial DNA phylogeny of red and green rock lobsters (genus Jasus)". Marine and Freshwater Research 48 (8): 1131–1136. doi:10.1071/MF97192. 
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