Overview

Brief Summary

Introduction

Species in the family are entirely pelagic and have a very fragile, gelatinous structure and eyes that vary from large to small to degenerate. They are usually found in association with the ocean floor (benthopelagic) at great depths. Some have, however, been caught far above the bottom and one specimen was dip-netted through an ice hole in the Arctic.

Brief diagnosis:

A cirrate ...

  • with long cirri and secondary webs.
  • with saddle-shaped shell.
  • with anterior mantle attached dorsally to head.

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Comprehensive Description

Characteristics

  1. Shape and consistency
    1. Anterior-posteriorly elongation pronounced; body extends well posterior to shell.

  2. Web
    1. Primary and secondary webs present.
    2. Web nodules present or absent.

      Figure. Oral view of left arm III of Cirroteuthis muelleri. Drawing modified from Voss and Pearcy, 1990.

      Figure. Ventral and aboral views of Cirroteuthis muelleri taken by an ROV in the Canadian Basin of the Arctic Ocean. The short, slender arm tips extend beyond the web. The web nodules are seen where the web intersects the arm from the ventral side. Frame grabs from a video taken during a NOAA/OE Census of Marine Life cruise; provided by Kevin Raskoff.

  3. Cirri
    1. Very long: Longest more than 8 times largest sucker diameter.

  4. Suckers
    1. Central portion of each arm with small, flattened suckers, nearly lacking acetabulum (i.e., aperatures may be virtually absent), on stalks that are either slender or swollen and fluid-filled.

  5. Gills
    1. Gills with sepioid form.

  6. Digestive system
    1. Digestive tract arranged in simple U-shape; intestine short, without lateral bends
    2. Posterior salivary glands present on buccal mass.
    3. Radula present or absent.
    4. Digestive gland unilobular.

  7. Reproductive system.
    1. Male accessory gland complex compacted into a single mass.

  8. Optic lobe
    1. Spherical.
    2. Single optic nerve bundle penetrates white body.

  9. Shell
    1. Saddle-shaped: Broad saddle with two lobe-like, deeply escavated flared wings, pronounced shoulders.

      Left, middle - Ventral and dorsal views of the shell of Cirroteuthis muelleri. Drawings from Voss and Pearcy (1990). Right - Dorsal view of the shell of Cirrothauma murrayi. Drawing from Aldred et al. (1983).

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:45Public Records:1
Specimens with Sequences:32Public Species:1
Specimens with Barcodes:24Public BINs:1
Species:7         
Species With Barcodes:2         
          
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Barcode data

Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Cirroteuthidae

Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Wikipedia

Cirroteuthidae

Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Unreviewed

Article rating from 0 people

Average rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!