Almennt
Möttulbúkur allt að 190 mm á lengd, keilulaga og grannnur, sverastur næst höfði og oddmjór aftanvert. Möttulkápan þykk og vöðvarík, með stórum, þríhyrndum sundblöðkum. Armar sterklegir, fremur stuttir, rúmur helmingur af lengd möttlubúks; griparmar sterklegir með áberandi kólfum, hvor með einum áberandi stórum krók, auk 5 til 6 minni króka. G. steenstrupi er úthafstegund, sem syndir upp um sjó og niður á um 1000 m dýpi. Tegundin er útbreidd um norðanvert Atlantshaf, frá um 45°N til 63°N. Stofnstærðin er lítt þekkt en er sennilega mjög stór og mikilvæg fæða ýmissa tannhvala. Tegundirnar G. fabricii og G. steenstrupi eru nauðalíkar og voru fram til 1981 taldar ein og sama tegundin. Útbreiðslan skarast töluvert en G. steenstrupi hefur mun suðlægari útbreiðslu en hin norðlæga Gonatus fabricii.
ENGLISH
Gonatus steenstrupi Kristensen, 1981
Maximum confirmed mantle length is 190 mm, but clearly it can be larger. It is an oceanic species, which generally inhabits the mesopelagic layer, and has been found at 1000 m water depth. Although G. steenstrupi is one of the most abundant squid in the low boreal and temperate Atlantic waters, little is known of its life habits. In Icelandic waters G. steenstrupi, is most common in the boreal waters south and west off Iceland, and less so in the north and east of Iceland. In contrast the congeneric G. fabricii is most abundant in the cold waters north and east off Iceland, but less so in the boreal wateres south and west of Iceland.
References:
Kristensen T. K. The genus Gonatus Gray, 1849 (Mollusca: Cephalopoda) in the North Atlantic. A revision of the North Atlantic species and description of Gonatus steenstrupi n. sp. Steenstrupia, 1981. Vol. 7. – P. 61-69.
Jereb P., Roper C. F. E. (eds) Cephalopods of the world. An annotated and illustrated catalogue of cephalopod species known to date. Volume 2. Myopsid and Oegopsid Squids. FAO Species Catalogue for Fishery Purposes. No. 4, Vol. 2. Rome, FAO. 2010. 605p.
Alexey V. Golikov and Rushan M. Sabirov, Kazan Federal University, Department of Zoology, & Gudmundur Gudmundsson, Icelandic Institute of Natural History, Department of Collections and Systematics
Citing this page:Golikov A. V., Sabirov R. M., Gudmundsson G. (2017). Cephalopoda, Gonatus steenstrupi (Kristensen, 1981), http://www.ni.is/biota/animalia/mollusca/cephalopoda/gonatus-steenstrupi
Útbreiðslukort
Myndir
Höfundur
Alexey Golikov apríl 2017
Biota
- Tegund (Species)
- (Gonatus steenstrupi)