go to the Tree of Life home page
advanced
Complete
This is an archived version of a Tree of Life page. For up-to-date information, please refer to the current version of this page.

Teuthowenia megalops Prosch 1947

Richard E. Young and Katharina M. Mangold (1922-2003)
Containing group: Teuthowenia

Characteristics

  1. Mantle
    1. Single-point tubercle, rarely absent, at each funnel-mantle fusion.
       image info

      Tubercle at the funnel-mantle fusion, mature male, 199 mm GL. From Voss, 1985, pp. 17, 18. Printed with the Permission of the Bulletin of Marine Science.

  2. Arms
    1. Arms II of males with 2 series of suckers on modified tips (sometimes appearing as 3-4 series due to crowding).
       image info

      Modified tip of arm II which occupies 23-32% of the arm length. Immature male, 184 mm GL. From Voss, 1985, pp. 17, 18. Printed with the Permission of the Bulletin of Marine Science.

    2. Arms II of males with 15-19 pairs of normal suckers proximal to modified tips.
    3. Arms I of males without modified tips.
       image info

      Entire arm I of a mature male (199 mm GL) showing sexual modifications but without modified tip. From Voss, 1985, pp. 17, 18. Printed with the Permission of the Bulletin of Marine Science.

    4. Largest arm III suckers 3 times basal suckers in diameter (at least 2.0-2.8% of GL in diameter).
  3. Tentacles
    1. Largest club suckers with 19-24 teeth.
       image info

      Drawing of largest sucker from manus of club, female, 187 mm ML. From Voss, 1985, pp. 17, 18. Printed with the Permission of the Bulletin of Marine Science.

Comments

Additional characteristics can be found here.

Life history

Growth stages

Distribution

Vertical distribution

Lu and Clarke (1975) found the paralarval stages mostly in the upper 200 m.

With one exception at 400m, Voss (1985) found all maturing females and mature and near-mature males at depths of 1000 - 2700 m.

Geographical distribution

T. megalops occupies the productive waters of the subarctic and northern temperate Atlantic Ocean where it lies within the Northern Subpolar-Temperate faunal zone (Voss, 1985).

 image info

Geographical distribution map modified from Voss, 1985.

References

Lu, C. C. and M. R. Clarke, 1975. Vertical Distribution of Cephalopods at 40° N, 53°N and 60°N at 20° W in the North Atlantic. Journal of the Marine Biological Association of the United Kingdom, 55 (2): 143-163.

Voss, N. A. 1980. A generic revision of the Cranchiidae (Cephalopoda; Oegopsida). Bull. Mar. Sci. 30: 365-412.

Voss, N. A. 1985. Systematics, biology and biogeography of the cranchiid cephalopod genus Teuthowenia (Oegopsida). Bull. Mar. Sci. 36: 1-85.

Title Illustrations
Scientific Name Teuthowenia megalops
Reference Voss, N. A. 1985. Systematics, biology and biogeography of the cranchiid cephalopod genus Teuthowenia (Oegopsida). Bull. Mar. Sci. 36: 1-85.
Sex Female
Life Cycle Stage subadult
View dorsal, ventral
Size 210 mm ML
Type hypotype
Copyright © 1985 Bulletin of Marine Science
About This Page

Richard E. Young

Dept of Oceanography
University of Hawaii
Honolulu, Hawaii 96822
USA

Katharina M. Mangold (1922-2003)


Citing this page:

Young, Richard E. and Mangold (1922-2003), Katharina M. 1999. Teuthowenia megalops Prosch 1947. Version 01 January 1999 (complete). http://tolweb.org/Teuthowenia_megalops/19613/1999.01.01 in The Tree of Life Web Project, http://tolweb.org/

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

Teuthowenia megalops

Page Content

Articles

Notes

Treehouses

Explore Other Groups

random page

top