Biology:Chionodraco myersi
| Chionodraco myersi | |
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| Chionodraco myersi | |
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| Species: | C. myersi
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| Chionodraco myersi H. H. DeWitt & J. C. Tyler, 1960
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Chionodraco myersi, the Myer's icefish, is a bathydemersal species of crocodile icefish with a circum-Antarctic distribution. This species is mainly to be found at depths of 200-800 m (656 to 2625 ft) on the continental shelf. The juveniles, which have a long pelagic phase, are found in the upper 100 m (328 ft).[1]
This species is pale greyish with a white belly and has five to six dark cross-bars on each side of its body. The cheeks have two dark stripes. The males and females can be differentiated by the male having a significantly higher first dorsal fin.[1] The adults' diets consist of fish (e.g. Pleurogramma antarcticum, the Antarctic silverfish) and euphasiids (e.g. Euphasia crystallorphia).[2] Sexual dimorphism is also observed in body color. Large males tend to be darker than similar-sized females, and the second dorsal fins and anal fins of mature males can be dusky in color as opposed to the fully black fins of mature females (however, the other fins are pale regardless of sex and maturity). The maximum length of this species is 38 cm (15 inches). It is one of the most abundant species of crocodile icefish in the Ross Sea;[1] however, it is of no interest to commercial fisheries.[3]
The genome of this species was sequenced in 2019.[4]
References
- ↑ 1.0 1.1 1.2 Gon, Ofer; Heemstra, Phillip C. (1990). Fishes of the Southern Ocean. Grahamstown: J.L.B.Smith Institute of Ichthyology. pp. 390–391.
- ↑ "Chionodraco myersi, Myers' icefish". https://www.fishbase.se/summary/Chionodraco-myersi.html.
- ↑ "FAO Catches List". https://www.fishbase.se/report/FAO/FAOCatchList.php?scientific=Chionodraco+myersi.
- ↑ Bargelloni, Luca; Babbucci, Massimiliano; Ferraresso, Serena; Papetti, Chiara; Vitulo, Nicola; Carraro, Roberta; Pauletto, Marianna; Santovito, Gianfranco et al. (2019-11-29). "Draft genome assembly and transcriptome data of the icefish Chionodraco myersi reveal the key role of mitochondria for a life without hemoglobin at subzero temperatures" (in en). Communications Biology 2 (1): 443. doi:10.1038/s42003-019-0685-y. ISSN 2399-3642. PMID 31815198.
Wikidata ☰ Q2218973 entry
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