Biology:Jasus

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Short description: Genus of lobsters

Jasus
Temporal range: Miocene–Recent
Jasus edwardsii.jpg
Jasus edwardsii
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Family: Palinuridae
Genus: Jasus
Parker, 1883 [1]
Type species
Palinurus lalandii
H. Milne-Edwards, 1837

Jasus is a genus of spiny lobsters which live in the oceans of the Southern Hemisphere.[2] They have two distinct "horns" projecting from the front of the carapace, but lack the stridulating organs present in almost all other genera of spiny lobsters.[2] Like all spiny lobsters, they lack claws, and have long stout antennae which are quite flexible.[2]

The generic name Jasus is derived from the Ancient Greek town of Iasos (on the Mediterranean Sea, located in modern Turkey), which was famous for its prawns and stamped them on some of its coins.[3][4][5]

Species

The following species are included in the genus Jasus:[6]

Image Scientific name Distribution
Jasus caveorum Webber & Booth, 1995 southeastern Pacific Ocean
Jasus edwardsii.jpg Jasus edwardsii (Hutton, 1875) Southern Australia: Western Australia to New South Wales & Tasmania. South Island of New Zealand
Jasus frontalis (H. Milne-Edwards, 1837) Juan Fernández Islands, Islas Desventuradas
West coast rock lobster at Wilhelm's Wall P3260136.jpg Jasus lalandii (H. Milne-Edwards, 1837) Southern Africa (Namibia to Algoa Bay, South Africa
Jasus paulensis (Heller, 1862) St. Paul Island and Amsterdam Island
Jasus tristani Holthuis, 1963 Tristan da Cunha archipelago; Vema seamount

Another species, formerly known as "Jasus verreauxi" is found around New Zealand (especially the North Island), the Chatham Islands, and around Australia (Queensland to Victoria and Tasmania); it is now placed in the genus Sagmariasus.

Approximate distributions of the extant species of Jasus, after Phillips (2006).[7]
Orange: J. caveorum; pink: J. frontalis; red: J. tristani; yellow: J. lalandii; blue: J. paulensis; green: J. edwardsii

Fossils

  • Jasus jlemingi Glaessner, 1960 - a Miocene fossil from New Zealand [8]

Fisheries

Most of the extant species are liable to commercial exploitation, with the majority of the A$4.6 million New South Wales lobster fishery industry being based on J. edwardsii and the closely related Sagmariasus verreauxi.[9] Jasus lalandii is the most important commercial rock lobster in southern Africa.[10]

References

  1. T. Jeffery Parker (1883). "On the structure of the head in Palinurus, with especial reference to the classification of the genus". Transactions and Proceedings of the Royal Society of New Zealand 16: 297–307. http://rsnz.natlib.govt.nz/volume/rsnz_16/rsnz_16_00_006580.pdf. 
  2. 2.0 2.1 2.2 Lipke Holthuis (1991). Marine lobsters of the world. Food and Agriculture Organization. ISBN 92-5-103027-8. http://ip30.eti.uva.nl/bis/lobsters.php?selected=beschrijving&menuentry=soorten&record=Jasus. Retrieved 2007-07-04. 
  3. Konuk, Koray (January 22, 2019). Bremen Riet, Carbon Jan-Mathieu van. ed. Hellenistic Karia. Ausonius Éditions. pp. 59–67. ISBN 9782356132833. http://books.openedition.org/ausonius/2702. 
  4. "Definition of JASUS". https://www.merriam-webster.com/dictionary/Jasus. 
  5. "The Numismatic Chronicle". Royal Numismatic Society.. November 18, 2007. https://books.google.com/books?id=jIsaAAAAYAAJ&q=++prawn. 
  6. Tin-Yam Chan (2010). "Jasus Parker, 1883". WoRMS. World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=246321. 
  7. Bruce F. Phillips (2006). Lobsters: Biology, Management, Aquaculture and Fisheries. John Wiley & Sons. p. 236. ISBN 978-1-4051-2657-1. 
  8. R. W. George & A. R. Main (1967). "The evolution of spiny lobsters (Palinuridae): a study of evolution in the marine environment". Evolution 21 (4): 803–820. doi:10.2307/2406775. PMID 28563070. 
  9. "Lobster fishery". New South Wales Department of Primary Industries. June 27, 2007. http://www.fisheries.nsw.gov.au/commercial/commercial2/lobster_fishery. 
  10. "Rock lobster Jasus lalandii". knet.co.za. http://www.knet.co.za/rjtlob/. 

External links

Wikidata ☰ Q1947018 entry