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Doryteuthis species are the common inshore squids of American waters. Several species (e.g., D. pealeii, D. opalescens) are targets of substantial fisheries. The genus is defined by geography and the absence of specific modifications that define other genera.
A loliginid ...
- with fins in adults rhomboidal, longer than broad, (length <70% of ML); mantle elongate, pointed posteriorly; cement body of spermatophore short.
- with a distribution in waters off the Americas.
- Ventral crest absent.
- Proximal suckers unmodified.
- Distal suckers of reduced size, sucker stalks elongated to form papillae in either dorsal or both dorsal and ventral series.
- Tentacular clubs expanded, suckers in four series.
- Fins extend to posterior tip of mantle.
- Photophores absent.
- Eggs less than 4 mm.
- Spermatophore cement body short.
The genus is subdivided into three subgenera, two of which are named, D. (Doryteuthis) and D. (Amerigo). Species of D. (Doryteuthis) have the modified portion of the hectocotylized arm extending to the arm tip, and the edges of gladius vane are thickened, while in D. (Amerigo) neither of these conditions hold. Doryteuthis sanpaulensis does not belong in either of these subgenera and was considered by Vecchione et al. (2005) to be the sole recognized species in an undescribed subgenus.
Figure. Oral view of the distal region of the hectocotylus of D. (Doryteuthis) plei, 105 mm ML, off S.E. USA, preserved. Photograph by R. Young.
Although we tend to think of squids as constantly swimming, D. (A.) pealeii is often observed sitting on the ocean floor or the bottom of an aquarium.
Vecchione, M., E. Shea, S. Bussarawit, F. Anderson, D. Alexeyev, C.-C. Lu, T. Okutani, M. Roeleveld, C. Chotiyaputta, C. Roper, E. Jorgensen and N. Sukramongkol. 2005. Systematics of Indo-West Pacific loliginids. Phuket Mar. Biol. Cent. Res. Bull. 66: 23-26.
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Page: Tree of Life Doryteuthis Authored by . Michael Vecchione. 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.
- First online 25 January 2006
- Content changed 15 August 2010
Citing this page:
Vecchione, Michael. 2010. Doryteuthis http://tolweb.org/Doryteuthis/23877/2010.08.15 in The Tree of Life Web Project, http://tolweb.org/. Version 15 August 2010 (under construction).