Antarctic silverfish

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Antarctic silverfish
Pleuragramma antarcticum.jpg
Scientific classification
Kingdom:
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Genus:
Pleuragramma

Boulenger, 1902
Species:
P. antarcticum
Binomial name
Pleuragramma antarcticum

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Pleuragramma antarcticum, the Antarctic silverfish, is a species of cod icefish native to the Southern Ocean.[3]

Pleuragramma antarcticum is a keystone species in the ecosystem of the Southern Ocean.[4]

While widely distributed around the Antarctic, the species appears to have largely disappeared from the western side of the northern Antarctic Peninsula, based on a 2010 research cruise funded by the National Science Foundation under the US Antarctic Program.[5]

Description

It usually grows to about 15 cm in length, with a maximum of 25 cm. When alive it is pink with a silver tint, but turns silver only after death.[3] This Antarctic marine fish is one of several in the region which produce antifreeze glycopeptides as an adaptation against the extreme cold of Antarctic waters.[6]

Ecology

The postlarvae 8–17 mm in size feed on eggs of calanoids (Calanoida), sea snails Limacina and tintinnids (Tintinnida).[7] Juveniles feeds on copepods (Copepoda), mostly on Oncaea curvata.[7]

Antarctic silverfish are an important prey species for high trophic animals, such as the Adelie penguin and the Weddell seal.

References

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  1. Gon, O. & Vacchi, M. 2010. Pleuragramma antarcticum. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 02 March 2014.
  2. Boulenger G. A. (1902). Rep. Voy. Southern Cross, p. 187.
  3. 3.0 3.1 Froese, Rainer and Pauly, Daniel, eds. (2014). "Pleuragramma antarcticum" in FishBase. February 2014 version.
  4. Bottaro M., Oliveri D., Ghigliotti L., Pisano E., Ferrando S. & Vacchi M. (2009). "Born among the ice: first morphological observations on two developmental stages of the Antarctic silverfish Pleuragramma antarcticum, a key species of the Southern Ocean". Reviews in Fish Biology and Fisheries 19(2); 249-259. doi:10.1007/s11160-009-9106-5.
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