Lethrinus atkinsoni

Lethrinus atkinsoni is a species of emperor fish[1] described by Alvin Seale in 1910.[2] It is commonly 30 to 35 cm long with a bluish-grey, yellowish, or tan in colour, and a white belly. This species is widespread throughout the west Pacific Ocean. It is a reef-associated fish and is non-migratory. It is solitary or is found in small schools, and lives in seagrass beds and over the sandy bottoms feeding on plankton, mollusks, crustaceans, and other fishes. This fish is caught by humans for food, but less so than other species in the genus due to its small size.

Lethrinus atkinsoni
Scientific classification
Kingdom:
Animalia
Phylum:
Chordata
Class:
Actinopterygii
Order:
Perciformes
Family:
Lethrinidae
Genus:
Lethrinus
Species:
L. atkinsoni
Binomial name
Lethrinus atkinsoni
Seale, 1910 [1]

Common names

Common names include the following, or variants thereof:

Description

The upper sides of this species may be bluish-grey, yellowish, or tan in colour. The belly is white. There is sometimes an indistinct area of yellow on the caudal peduncle. The head is brown, has a moderately blunt and short snout, with reddish lips.[7] The fins may be reddish, orange, or yellowish and are pale. The edges of the fins are commonly reddish.[7] This fish grows to approximately 40 to 50 cm, but is commonly 30 to 35 cm in length.[7]

This species has been mistaken for Lethrinus mahsena, however, they are different in numerous, consistent ways, including colour, the shape of the body, and in meristic counts.[7]

Distribution

This species is widespread throughout the west Pacific Ocean, and is known to live in the waters of Indonesia, the Philippines, New Caledonia, and Japan.[4][8][7]

Habitat

Lethrinus atkinsoni is a reef-associated fish, and is non-migratory. It lives in seagrass beds and over the sandy bottoms of lagoons and the outer slopes of coral reefs. It is found in depths of between 0 and 30 metres, but is most commonly found between 2 and 8 metres.[5][8]

Diet

This species is known to eat plankton, mollusks, crustaceans, and other fishes[5] It may be solitary or found in schools.[8][7]

Human uses

Lethrinus atkinsoni is caught as a subsistence fish, commercially, as well as by recreation fishers.[5] Although considered desirable as food, other species in the genus are preferred due to its smaller size. It is caught mainly using handlines, by trawling, and is captured in such nets as the shore seine and gillnet.[7] It is marketed mostly fresh, not frozen.[7][8]

Parasites

As most fish, Lethrinus atkinsoni is the host of many species of parasites.[9] The diplectanid monogenean Calydiscoides rohdei [10][11][12] is parasitic on the gills. The gills also harbour unidentified gnathiid isopod larvae.[9] The digestive tract harbours several species of digeneans, including the opecoelids Macvicaria macassarensis[9] and Neolebouria sp.[9] and the acanthocolpid Zoogonus pagrosomi[13][14] and unidentified tetraphyllid cestodes.[9] The abdominal cavity harbours larvae of the tetrarynch cestode Pseudogilquinia pillersi.[15] In New Caledonia, where its parasites were studied, Lethrinus atkinsoni has a total of six species of parasites.[9]

References
  1. "WoRMS - World Register of Marine Species - Lethrinus atkinsoni Seale, 1910". Marinespecies.org. 2008-01-15. Retrieved 2014-05-26.
  2. "The fishery resources of the Philippine Islands with descriptions of new species : Seale, Alvin, 1873- : Free Download & Streaming : Internet Archive".
  3. GBIF. "Lethrinus atkinsoni Seale, 1910 - Checklist View". Gbif.org. Retrieved 2014-06-02.
  4. "Cook Islands Biodiversity : Lethrinus atkinsoni - Pacific Yellowtail Emperor". Cookislands.bishopmuseum.org. Retrieved 2014-06-02.
  5. Atlas of Living Australia. "Lethrinus atkinsoni : Yellowtail Emperor | Atlas of Living Australia". Bie.ala.org.au. Retrieved 2014-06-02.
  6. "Lethrinus". Fishesofaustralia.net.au. Retrieved 2014-06-02.
  7. ftp://ftp.fao.org/docrep/fao/009/t0242e/T0242E07.pdf
  8. "Lethrinus atkinsoni, Pacific yellowtail emperor : fisheries, gamefish". Fishbase.org. 2012-07-03. Retrieved 2014-06-02.
  9. Justine, J.-L., Beveridge, I., Boxshall, G. A., Bray, R. A., Moravec, F. & Whittington, I. D. 2010: An annotated list of fish parasites (Copepoda, Monogenea, Digenea, Cestoda and Nematoda) collected from Emperors and Emperor Bream (Lethrinidae) in New Caledonia further highlights parasite biodiversity estimates on coral reef fish. Zootaxa, 2691, 1-40. Open-Access PDF
  10. Oliver, G. 1984: Quelques espèces du Genre Calydiscoides Young (Monogenea, Monopisthocotylea, Diplectanidae), parasites de Perciformes du Récif de la Grande Barrière (Australie). Zoologica Scripta, 13, 189-193.
  11. Justine, J.-L. 2007: Species of Calydiscoides Young, 1969 (Monogenea: Diplectanidae) from lethrinid fishes, with the redescription of all of the type-specimens and the description of C. euzeti n. sp. from Lethrinus rubrioperculatus and L. xanthochilus off New Caledonia. Systematic Parasitology, 67, 187-209. doi:10.1007/s11230-006-9087-x
  12. Rascalou, G. & Justine, J.-L. 2007: Three species of Calydiscoides (Monogenea: Diplectanidae) from five Lethrinus spp. (Lethrinidae: Perciformes) off New Caledonia, with a description of Calydiscoides terpsichore sp. n. [Article]. Folia Parasitologica, 54, 191-202. doi:10.14411/fp.2007.026
  13. Bray, R. A. & Justine, J.-L. 2008: Dupliciporia lanterna n. sp. (Digenea: Zoogonidae) from Priacanthus hamrur (Perciformes: Priacanthidae) and additional zoogonids parasitizing fishes from the waters off New Caledonia. Zootaxa, 1707, 60-68.
  14. Bray, RA.; Justine, J-L. (2014). "A review of the Zoogonidae (Digenea: Microphalloidea) from fishes of the waters around New Caledonia, with the description of Overstreetia cribbi n. sp". PeerJ. 2: e292. doi:10.7717/peerj.292. PMC 3961169. PMID 24688868.
  15. Beveridge, I., Chauvet, C. & Justine, J.-L. 2007: Redescription of Pseudogilquinia pillersi (Southwell, 1929) (Cestoda, Trypanorhyncha) from serranid and lethrinid fishes from New Caledonia and Australia. Acta Parasitologica, 52, 213-218. doi:10.2478/s11686-007-0029-9
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