Dosidicus gigas

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Dosidicus gigas
Stato di conservazione
Dati insufficienti[1]
Classificazione scientifica
DominioEukaryota
RegnoAnimalia
SottoregnoEumetazoa
RamoBilateria
SuperphylumProtostomia
(clade)Lophotrochozoa
PhylumMollusca
SubphylumConchifera
ClasseCephalopoda
SottoclasseColeoidea
SuperordineDecapodiformes
OrdineTeuthida
SottordineOegopsina
FamigliaOmmastrephidae
SottofamigliaOmmastrephinae
GenereDosidicus
SpecieD. gigas
Nomenclatura binomiale
Dosidicus gigas
D'Orbigny, 1835 (in 1834-1847)
Sinonimi

Dosidicus eschrichtii, Dosidicus steenstrupii, Ommastrephes giganteus, Ommastrephes gigas

Nomi comuni

Calamaro di Humboldt

Dosidicus gigas (d'Orbigny, 1835) noto commercialmente come totano gigante del Pacifico[2] o come calamaro di Humboldt, è un calamaro della famiglia Ommastrephidae, di notevoli dimensioni, che vive nelle acque della corrente di Humboldt, nell'Oceano Pacifico, al largo delle coste sudamericane. A causa della sua indole fortemente aggressiva e per la colorazione rossa cupa del corpo, questo calamaro è chiamato anche Diablo Rojo, il Diavolo Rosso.

Distribuzione e habitat

Vive di solito ad una profondità di 200-700 metri, sebbene non sia raro incontrarlo fino alla superficie, dalla Terra del Fuoco fino alla California.

Descrizione

Il Dosidicus gigas è un calamaro di grandi dimensioni, fino a due metri di lunghezza. Vive in gruppi numerosi, fino a 1200 individui, e possono nuotare ad una velocità di 24 km/h grazie al sistema di propulsione fornito dal sifone. Ha degli occhi molto grandi per poter vedere nell'oscurità, lunghi tentacoli muniti di ventose uncinate capaci di afferrare saldamente la preda per portarla alla bocca ed è dotato di un becco molto duro all'interno dell'apertura boccale, il quale presenta una potenza tale da frantumare le ossa.

Note

  1. ^ (EN) Barratt, I. & Allcock, L., Dosidicus gigas, su IUCN Red List of Threatened Species, Versione 2020.2, IUCN, 2020.
  2. ^ Mipaaf - Decreto Ministeriale n°19105 del 22 settembre 2017 - Denominazioni in lingua italiana delle specie ittiche di interesse commerciale, su politicheagricole.it. URL consultato il 29 marzo 2018.

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  Portale Molluschi: accedi alle voci di Wikipedia che trattano di molluschi

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