''Berryteuthis'' is a genus of
squid in the family
Gonatidae
The Gonatidae, also known as armhook squid, are a family of moderately sized squid. The family contains about 19 species in three genera, widely distributed and plentiful in cold boreal waters of the Pacific Ocean. At least one species is known f ...
, comprising two known
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
. The two members differ greatly in
size
Size in general is the magnitude or dimensions of a thing. More specifically, ''geometrical size'' (or ''spatial size'') can refer to linear dimensions ( length, width, height, diameter, perimeter), area, or volume. Size can also be m ...
, with ''
B. anonychus'' and ''
B. magister'' reaching mature
mantle lengths of 10 cm and 40 cm respectively. In both members,
photophore
A photophore is a glandular organ that appears as luminous spots on various marine animals, including fish and cephalopods. The organ can be simple, or as complex as the human eye; equipped with lenses, shutters, color filters and reflectors, ...
s are absent.
Species
*''
Berryteuthis anonychus
''Berryteuthis anonychus'', also known as the minimal armhook squid or smallfin gonate squid, is a species of squid in the family Gonatidae. It is distinguished from other gonatids by the lack of hooks on all members, except for females on the ba ...
''
( Pearcy & Voss
Voss () is a municipality and a traditional district in Vestland county, Norway. The administrative center of the municipality is the village of Vossevangen. Other villages include Bolstadøyri, Borstrondi, Evanger, Kvitheim, Mjølfjell, ...
, 1963), minimal armhook squid
*''
Berryteuthis magister
''Berryteuthis magister'', also known as the magister armhook squid, commander squid or schoolmaster gonate squid, is a medium-sized squid in the family Gonatidae. It is found in cold, high latitude waters of the North Pacific where it is among ...
''
( Berry, 1913)
**''
Berryteuthis magister magister'', magister armhook squid
**''
Berryteuthis magister nipponensis''
**''
Berryteuthis magister shevtsovi''
References
External links
Tree of Life web project: ''Berryteuthis''
Squid
Taxa named by Adolf Naef
Cephalopod genera
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