Mastigoteuthis danae
Michael Vecchione and Richard E. YoungIntroduction
Joubin (1933) collected 18 young squid of this species but based his description on three specimens, 61 (arm tip to tail), 45 and 17 mm (tentacle tip to tail). All specimens, in spite of the rather large size, apparently are paralarval.
Diagnosis
A mastigoteuthid ...
- with large tubercules in advanced paralarvae.
- with a fin that is longer than wide.
Characteristics
- Arms
- Arm suckers without teeth. Figure. Oral-oblique view of arm IV sucker of M. danae, specimen 1. Drawing from Joubin (1933).
- Tentacles
- Stalk about 2 mm in length and slender.
- Club enlarged in diameter, ca. 7 mm long.
- Club tip slender, ca. 3 mm long, with sucker buds. Figure. Lateral viewof the club of specimen 2 of M. danae, 45 mm total length, ca. 20 mm ML (without tail). 16°N, 62°W. Drawing from Joubin (1933).
- Funnel locking-apparatus
- Funnel locking-apparatus with a very large tragus and a distinct antitragus. Figure. Funnel/mantle locking-apparatus of M. danae. Left - Ventral view of funnel component. Right - Dorsal view of mantle component. Drawings from Joubin (1933).
- Mantle and Skin
- Mantle and other skin, except fins, covered with small, cartilagenous tubercules.
- Tubercules absent from a 17 mm total length specimen. Figure. Left - Side view of the head of M. danae, ca 45 mm ML. Right - Shape of tubercules. A - External view. B - Side view. Drawings from Joubin (1933).
- Fins
- Fins longer than broad.
- Long tail present in small paralarvae but nearly absent in large paralarvae. Figure. Fins and tail of M. danae, specimen 2 (ca. 20 mm ML, without tail). Drawing from Joubin (1933).
- Photophores
- Photophores absent.
- Pigmentation
- Few chromatophores present.
- Measurements
Total length 61 mm to tip of arm IV 45 mm to tip of tentacle Mantle length (without fins) 25 mm Mantle length (with fins)* 46 mm Head width 17 mm Head length 7 mm Fin length 25 mm 11 mm* Fin width 17 mm 7 mm Arm I, length 3 mm Arm II, length 5 mm Arm III, length 4 mm Arm IV, length 14 mm Tail < 1 mm* 9 mm Tentacle length -- 45 mm
Comments
This description is taken from Joubin (1933). M. danae is known only from paralarvae and may represent the young stage of a known species.
Distribution
Type locality: North Atlantic; 34°40'N, 33°16'W, SE of the Azores; 16°03'N, 62°29'W near the Antilles; 30°51'N, 21°00'W east of the Canary Islands.
Salcedo-Vargas (1997) described four specimens (15-30 mm ML) from off Somalia, western Indian Ocean.
References
Joubin, L. 1933. Notes pr?liminaires sur les C?phalopodes des croisi?res du Dana (1921-1922). 4e Partie. Annales de l'Institut Oc?anographique, new series, 13: 1-49.
Salcedo-Vargas, M. A. 1997. Cephalopods from the Netherlands Indian Ocean Programme (NIOP) - II. Mastigoteuthid lineage and related forms. Beaufortia, 47: 91-108.
About This Page
National Marine Fisheries Service
Systematics Laboratory
National Museum of Natural History
Washington, D. C. 20560
USA
Richard E. Young
Dept of Oceanography
University of Hawaii
Honolulu, Hawaii 96822
USA
Page copyright © 2004 and Richard E. Young
- First online 17 July 2004
Citing this page:
Vecchione, Michael and Young, Richard E. 2004. Mastigoteuthis danae http://tolweb.org/Mastigoteuthis_danae/19511/2004.07.17 in The Tree of Life Web Project, http://tolweb.org/
. Version 17 July 2004 (under construction).