Panulirus pascuensis

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Panulirus pascuensis
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Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Family: Palinuridae
Genus: Panulirus
Species:
P. pascuensis
Binomial name
Panulirus pascuensis
Reed, 1954
Synonyms [2]

Palinurus paschalisHolthuis, 1972

Panulirus pascuensis is a species of spiny lobster found around Easter Island and the Pitcairn Islands in the Pacific Ocean. [2] It is known in English as the Easter Island spiny lobster and in Spanish as Langosta de Isla de Pascua. This lobster is fished on a small scale for local consumption. [2] [3]

Contents

Description

Adults grow to a total length of 15–25 centimetres (6–10 in), with a carapace 6–10 cm (2.4–3.9 in) long. [2] The antennal plate is visible in front of the carapace and has two large spines. The first pair of antennae are forked and the second pair are long, thick and spiny. There are long, slender flagella at the tips of the antennae. There are no claws on the first four pairs of walking legs. The colour of this spiny lobster is dark greenish purple with pale transverse bands on the posterior edge of the abdominal segments. The base of the tail fan has pale spots and the antennae are a uniform colour. The walking legs have slender longitudinal pale stripes. [4]

Distribution and habitat

Panulirus pascuensis is native to the south eastern Pacific Ocean, round the coasts of Easter Island and Pitcairn Island at depths of up to 5 metres (16 ft). It is also reported from the Austral Islands in French Polynesia. It is found on rocky shores and tends to hide during the day under boulders and in crevices. [1]

Biology

Like other spiny lobsters, Panulirus pascuensis feeds at night and is an omnivore and scavenger. Its diet consists of slow moving prey such as molluscs, echinoderms, crustaceans and chitons, supplemented with fish carcases or other carrion. Although it has no crushing claws, its mandibles are powerful and can break open bivalve and gastropod shells. [5] The larvae spend over a year as part of the plankton before settling on the seabed and undergoing metamorphosis into juveniles. [5]

Status

Panulirus pascuensis is collected by hand or with a spear for human consumption on Easter and Pitcairn Islands. Gill nets and lobster pots are also sometimes used and at night a torch is employed. The IUCN has listed this lobster in the Red List of Threatened Species as "Data Deficient" because insufficient information is available to assess its population size and trend. [1] The main threat to this lobster may be tourism, as the Easter Islanders are keen to attract more visitors and the Easter Island spiny lobster is the seafood dish of choice to serve to them at local restaurants. [6] It is a traditional food of the Rapanui, the native Polynesian inhabitants of the island, and is represented on many rock engravings. [6]

Related Research Articles

Spiny lobster Family of crustaceans

Spiny lobsters, also known as langustas, langouste, or rock lobsters, are a family (Palinuridae) of about 60 species of achelate crustaceans, in the Decapoda Reptantia. Spiny lobsters are also, especially in Australia, New Zealand, Ireland, South Africa, and the Bahamas, called crayfish, sea crayfish, or crawfish, terms which elsewhere are reserved for freshwater crayfish.

California spiny lobster Species of crustacean

The California spiny lobster is a species of spiny lobster found in the eastern Pacific Ocean from Monterey Bay, California, to the Gulf of Tehuantepec, Mexico. It typically grows to a length of 30 cm (12 in) and is a reddish-brown color with stripes along the legs, and has a pair of enlarged antennae but no claws. The interrupted grooves across the tail are characteristic for the species.

Lobster fishing

Lobsters are widely fished around the world for their meat. They are often hard to catch in large numbers, but their large size can make them a profitable catch. Although the majority of the targeted species are tropical, the majority of the global catch is in temperate waters.

Slipper lobster Family of crustaceans

Slipper lobsters are a family (Scyllaridae) of about 90 species of achelate crustaceans, in the Decapoda clade Reptantia, found in all warm oceans and seas. They are not true lobsters, but are more closely related to spiny lobsters and furry lobsters. Slipper lobsters are instantly recognisable by their enlarged antennae, which project forward from the head as wide plates. All the species of slipper lobsters are edible, and some, such as the Moreton Bay bug and the Balmain bug are of commercial importance.

<i>Panulirus cygnus</i> Species of crustacean

Panulirus cygnus is a species of spiny lobster, found off the west coast of Australia. Panulirus cygnus is the basis of Australia's most valuable fishery, making up 20% of value of Australia's total fishing industry, and is identified as the western rock lobster.

<i>Ibacus peronii</i>

Ibacus peronii, the Balmain bug or butterfly fan lobster, is a species of slipper lobster. It lives in shallow waters around Australia and is the subject of small-scale fishery. It is a flattened, reddish brown animal, up to 23 cm (9 in) long and 14 cm (6 in) wide, with flattened antennae and no claws.

<i>Palinurus elephas</i>

Palinurus elephas is a commonly caught species of spiny lobster from the East Atlantic Ocean and the Mediterranean Sea. Its common names include European spiny lobster, crayfish or cray, crawfish, common spiny lobster, Mediterranean lobster and red lobster.

<i>Panulirus argus</i> Species of crustacean

Panulirus argus, the Caribbean spiny lobster, is a species of spiny lobster that lives on reefs and in mangrove swamps in the western Atlantic Ocean.

<i>Panulirus versicolor</i> Species of crustacean

Panulirus versicolor is a species of spiny lobster that lives in tropical reefs in the Indo-Pacific. Other names include painted rock lobster, common rock lobster, bamboo lobster, blue lobster, and blue spiny lobster. P. versicolor is one of the three most common varieties of spiny lobster in Sri Lanka, alongside Panulirus homarus and Panulirus ornatus.

<i>Acanthacaris</i> Genus of lobsters

Acanthacaris is a genus of deep-water lobsters. It contains two species, A. caeca and A. tenuimana, and is the only genus in the subfamily Neophoberinae.

<i>Scyllarides latus</i>

Scyllarides latus, the Mediterranean slipper lobster, is a species of slipper lobster found in the Mediterranean Sea and in the eastern Atlantic Ocean. It is edible and highly regarded as food, but is now rare over much of its range due to overfishing. Adults may grow to 1 foot (30 cm) long, are camouflaged, and have no claws. They are nocturnal, emerging from caves and other shelters during the night to feed on molluscs. As well as being eaten by humans, S. latus is also preyed upon by a variety of bony fish. Its closest relative is S. herklotsii, which occurs off the Atlantic coast of West Africa; other species of Scyllarides occur in the western Atlantic Ocean and the Indo-Pacific. The larvae and young animals are largely unknown.

<i>Panulirus homarus</i> Species of crustacean

Panulirus homarus is a species of spiny lobster that lives along the coasts of the Indian and Pacific Oceans. It lives in shallow water, and feeds on the brown mussel Perna perna. It typically grows to a length of 20–25 cm (7.9–9.8 in). Alongside the dark green nominate subspecies, two red subspecies are recognised, one around the Arabian Peninsula, and one around southern Africa. It is the subject of small-scale fishery.

<i>Palinurus mauritanicus</i> Species of crustacean

Palinurus mauritanicus is a species of spiny lobster. It is found in deep waters in the eastern Atlantic Ocean and the western Mediterranean Sea.

<i>Panulirus brunneiflagellum</i> Species of crustacean

Panulirus brunneiflagellum is a species of spiny lobster that lives around the Ogasawara Group of southern Japan. Its members were previously included in P. japonicus, although it may be more closely related to P. femoristriga. It has been fished for more than 150 years by Japanese fishermen, who call the species aka-ebi. It differs from related species by the lack of banding along the flagella of the first pair of antennae.

<i>Panulirus ornatus</i> Species of crustacean

Panulirus ornatus is a large edible spiny lobster with 11 larval stages that has been successfully bred in captivity.

<i>Panulirus guttatus</i> Species of crustacean

Panulirus guttatus, the spotted spiny lobster or Guinea chick lobster, is a species of spiny lobster that lives on shallow rocky reefs in the tropical West Atlantic and Caribbean Sea.

<i>Panulirus echinatus</i> Species of crustacean

Panulirus echinatus, the brown spiny lobster, is a species of spiny lobster that lives on rocky reefs in the tropical western Atlantic Ocean and central Atlantic Islands.

Jasus paulensis, also commonly known as the St Paul rock lobster, is a species of spiny lobster found in the waters around Saint Paul Island in the southern Indian Ocean and around Tristan da Cunha in the southern Atlantic Ocean. At one time the rock lobsters on Tristan da Cunha were believed to be a separate species known as the Tristan rock lobster, but the use of mitochondrial DNA sequencing has shown them to be identical. Some authorities, for example the International Union for Conservation of Nature, retain them as separate species. The Tristan rock lobster features on the coat of arms and the flag of Tristan da Cunha.

<i>Panulirus longipes</i> Species of crustacean

Panulirus longipes, the longlegged spiny lobster, is a species of spiny lobster that lives on shallow rocky and coral reefs in the tropical Indo-Pacific region. The International Union for Conservation of Nature has assessed its conservation status as being of "least concern".

<i>Panulirus penicillatus</i> Species of crustacean

Panulirus penicillatus is a species of spiny lobster that lives on shallow rocky and coral reefs in the tropical Indo-Pacific region. Common names for this spiny lobster include variegated crayfish, tufted spiny lobster, spiny lobster, Socorro spiny lobster, red lobster, pronghorn spiny lobster, golden rock lobster, double spined rock lobster and coral cray. It has a very wide range and the International Union for Conservation of Nature has assessed its conservation status as being of "least concern".

References

  1. 1 2 3 M. Butler; A. Cockcroft & A. MacDiarmid (2011). "Panulirus pascuensis". IUCN Red List of Threatened Species . 2011: e.T170057A6723020. doi: 10.2305/IUCN.UK.2011-1.RLTS.T170057A6723020.en .
  2. 1 2 3 4 Lipke B. Holthuis (1991). "Panulirus pascuensis". FAO Species Catalogue, Volume 13. Marine Lobsters of the World. FAO Fisheries Synopsis No. 125. Food and Agriculture Organization. pp. 149–150. ISBN   92-5-103027-8.
  3. Cruz-Trinidad, A. (1996). Valuation of Tropical Coastal Resources: Theory and Application of Linear Programming. WorldFish. p. 61. ISBN   971870972X.
  4. "Easter Island spiny lobster (Panulirus pascuensis)". Marine Lobsters of the World. Marine Species Identification Portal. Retrieved 2 March 2013.
  5. 1 2 Caitlin Houlihan. "Caribbean Spiny Lobster". Marine Invertebrates of Bermuda. Retrieved 6 March 2013.
  6. 1 2 Loret, John; Tanacredi, John T. (2003). Easter Island: Scientific Exploration Into the World's Environmental Problems in Microcosm. Springer. p. 167. ISBN   0306474948.