Under Construction

Gonatus berryi Naef 1923

Tsunemi Kubodera, F. G. Hochberg, and Richard E. Young
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window
Containing group: Gonatus

Introduction

Gonatus berryi is a relatively common and distinctive species. It reaches a maximum size of at least 240 mm ML.

Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window

Figure. Ventral view of G. berryi, 119 mm GL. Drawing from Young (1972).

Brief diagnosis:

A Gonatus with ...

Characteristics

  1. Arms
    1. Number of suckers in proximal half of each arm IV at 50 mm GL = about ??, and at 119 mm GL = about 45.

  2. Tentacles
    1. Clubs unusually large, 30-37% of GL. Note large club size in title photographs.
    2. Club dactylus with 4  sucker series becoming disorganized at dactylus base where sucker series split into those leading to the marginal zones of club.
    3. Club ventral-marginal zone with 3 series of suckers in central region; medial suckers ca. one-fourth diameter of suckers of marginal series. Occasionally 1-2 small suckers present as a partial fourth series.
    4. Club dorsal-marginal zone with few suckers in 1-2 irregular series.
    5. Club medial zone with large central hook; small distal hook and proximal series with 1-2 suckers followed proximally by 2-4 small hooks with largest hook never closest to large central hook (i. e. hooks initially increase in size proximally).
    6. Total number of suckers (excluding terminal pad, medial zone) on tentacular club: about 159-181.
    7. Median region of tentacular stalk between marginal series without suckers except for occasional 1-2 sucker.
    8. Click on an image to view larger version & data in a new window
      Click on an image to view larger version & data in a new window



      Figure. Oral views of the tentacle and club of G. berryi 119 mm GL, plesiotype. Top - Left tentacle. Middle- Enlargement of the tentacular club. Drawings from Young (1972). Bottom - Right tentacular club. Photograph by R. Young. The drawings have been inverted for easier comparison with the photograph.

  3. Head
    1. Beaks. Descriptions can be found here: Lower beak; upper beakSee also this site.

  4. Fins
    1. Fins large, ca. 50% of PL.

  5. Photophores
    1. Photophores absent

Comments

More details of the description of G. berryi can be found here.

G. berryi, in addition to the features listed above, can generally be recognized by the large size of the central hook, the large club manus and narrow dactylus and the somewhat more distal position of the central hook. 

Life History

The advanced paralarva of G. berryi at 8-10 mm ML has a spherical digestive gland rather than the spindle-shaped, obliquely-oriented digestive gland common to paralarvae of many (all?) other members of the genus.

Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window

Figure. Side view of a paralarva of G. berryi, 10 mm ML. Drawing from Young (1972).

The size of the juvenile at which the various hooks first develop is often distinctive of the species.

Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window

Figure. Chart of the size ranges over which hooks in juveniles of G. berryi first appear. Chart modified from Young (1972).

Distribution

Type locality: Monterey Bay, California, eastern North Pacific. G. berryi is broadly distributed across the North Pacific.
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window

Figure. Distribution of G. berryi. Dark pink area indicates known range; light pink area indicates inferred range. Chart modified from Okutani, et al. (1988). 

References

Okutani, T., T. Kubodera and K. Jefferts. 1983. Diversity, distribution and ecology of gonatid squids in the subarctic Pacific: A review. Bull. Ocean Res. Inst., Univ. Tokyo, No. 26 (1):150-192.

Young, R. E. 1972. The systematics and areal distribution of pelagic cephalopods from the seas off Southern California. Smithson. Contr. Zool., 97: 1-159.

Title Illustrations
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window
Scientific Name Gonatus berryi
Location Eastern North Pacific off Monterey, California at about 36.7N, 122.1W
Comments In situ photographs taken at depths of 736 m (left photograph) and 1080 m (right photograph. Note that in the left photograph the tentacles appear to be locked together at the club base and club tip.
Acknowledgements Image courtesy of the Monterey Bay Aquarium Research Institute (MBARI). You must obtain permission from MBARI to use this photo; please contact pressroom@mbari.org for further information.
Identified By R. E. Young
Behavior Two G. berryi showing the Dorsal Arm-curl posture. Nomenclature from Bush, 2009.
View Dorsal, side
Size 95 mm ML (left), 65 mm ML (right)
Copyright © 2013 MBARI
About This Page


National Science Museum, Tokyo, Japan

F. G. Hochberg
Santa Barbara Museum of Natural History, Santa Barbara, California, USA


University of Hawaii, Honolulu, HI, USA

Page: Tree of Life Gonatus berryi Naef 1923. Authored by Tsunemi Kubodera, F. G. Hochberg, and Richard E. Young. The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

Citing this page:

Kubodera, Tsunemi, F. G. Hochberg, and Richard E. Young. 2013. Gonatus berryi Naef 1923. Version 08 January 2013 (under construction). http://tolweb.org/Gonatus_berryi/19773/2013.01.08 in The Tree of Life Web Project, http://tolweb.org/

edit this page
close box

This page is a Tree of Life Leaf Page.

Each ToL leaf page provides a synopsis of the characteristics of a group of organisms representing a leaf at the tip of the Tree of Life. The major distinction between a leaf and a branch of the Tree of Life is that a leaf cannot generally be further subdivided into subgroups representing distinct genetic lineages.

For a more detailed explanation of the different ToL page types, have a look at the Structure of the Tree of Life page.

close box

Gonatus berryi

Page Content

articles & notes

collections

people

Explore Other Groups

random page

  go to the Tree of Life home page
top