Trematomus bernacchii, Emerald rockcod

Trematomus bernacchii Boulenger, 1902

Emerald rockcod
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Trematomus bernacchii   AquaMaps   Data sources: GBIF OBIS
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Trematomus bernacchii
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Classificatie / Namen Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Perciformes/Notothenioidei (Icefishes) > Nototheniidae (Cod icefishes) > Trematominae
Etymology: Trematomus: Greek, trematos = hole + Greek, tomo = section, cut (Ref. 45335)bernacchii: Species name bernacchii honors Louis Bernarcchi, an Australian physicist-meteorologist; specimen collected on the Southern Cross Expedition and served on Scott's 1901 expedition (Ref. 45168).
Eponymy: Louis Charles ‘Bunny’ Bernacchi (1876–1942) was a physicist and astronomer who took part in several expeditions to Antarctica. [...] (Ref. 128868), visit book page.
More on author: Boulenger.

Taxonomic Remarks
The genus Pseudotrematomus is a synonym of Trematomus, which is confirmed by a molecular study to be published (J.-C. Hureau, pers. comm. 08 Jun. 2010).

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

marien demersaal; diepte 0 - 700 m (Ref. 11892), usually 0 - 200 m (Ref. 45168). Polar; 61°S - 78°S

Verspreiding Gebieden | FAO regio's | Ecosystemen | Voorkomen | Verspreidingskaart | Introducties | Faunafri

Southern Ocean: Peter Island, South Shetland, Elephant and South Orkney islands. Mac-Robertson, Queen Mary, Adelie Coasts, Weddell, Davis and Ross seas. East Antarctica from Queen Maud Land to Terre Adelie.

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturiteit: Lm ?, range 18 - ? cm
Max length : 28.0 cm TL mannelijk / geslacht onbekend; (Ref. 5179); 35.0 cm TL (female); common length : 25.0 cm TL mannelijk / geslacht onbekend; (Ref. 2121); max. gerapporteerde leeftijd: 10 Jaren (Ref. 5179)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 4 - 6; Dorsale zachte stralen (totaal) : 34 - 39; Anale zachte stralen: 31 - 35. Body brownish, large dark spots in two or three series on body. Spinous dorsal blackish in upper part (Ref. 11892).
Body shape (shape guide): fusiform / normal.

Biologie     Verklarende woordenlijst (bv. epibenthic)

Found in seafloors, well adapted to extremely low and stable temperatures (-1.86°C), annual mean temperature of McMurdo Sound) (Ref. 45168). Feed on polychaetes, gastropods, isopods, amphipods and few algae. Spawn once a year (Ref. 1071). Utilized for human consumption. The report by Ref. 4537 as commercially important is probably a mistake for Trematomus eulepidotus (SAU, NB303).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Although members of this Family are known to tend to egg masses, it is assumed that because of the high fecundity, this species is a non-guarder (RF), to be corrected if direct information becomes available.

Hoofdreferentie Upload uw referenties | Referenties | Coördinator | Medewerkers

Dewitt, H.H., P.C. Heemstra and O. Gon, 1990. Nototheniidae. p. 279-331. In O. Gon and P.C. Heemstra (eds.) Fishes of the Southern Ocean. J.L.B. Smith Institute of Ichthyology, Grahamstown, South Africa. (Ref. 5179)

Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

FAO - Publication: search | FishSource |

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Schattingen op basis van modellen

Fylogenetische diversiteitsindex
(Ref. 82804)
PD50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00537 (0.00282 - 0.01024), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trofisch niveau
(Ref. 69278)
3.4   ±0.1 se; based on diet studies.
Generation time 5.9 (2.0 - 12.2) years. Estimated as median ln(3)/K based on 11 growth studies.
Weerstandsvermogen
(Ref. 120179)
Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.19-0.91; tm=3-6; tmax=10; Fec=1,200-3,123).
Kwetsbaarheid van de visserij
(Ref. 59153)
Moderate to high vulnerability (53 of 100). 🛈
Voedingsstoffen
(Ref. 124155)
Calcium = 31.4 [18.6, 70.0] mg/100g; Iron = 0.456 [0.206, 0.860] mg/100g; Protein = 17.3 [16.3, 18.4] %; Omega3 = 0.417 [0.228, 0.727] g/100g; Selenium = 15.4 [6.7, 32.6] μg/100g; VitaminA = 15.6 [3.5, 70.7] μg/100g; Zinc = 0.515 [0.356, 0.761] mg/100g (wet weight); based on nutrient studies.