Patterns of white photophores of the funnel groove.

Richard E. Young

Figure. White photophores of Abraliopsis
sp. B. The arrow points to the Cyan dot
of the drawing.

Figure. A Moderate Pattern

First, a reminder what the white photophores of the funnel groove look like in a freshly caught, although dead, Abraliopsis (photograph to the left). Next look at a drawing of the pattern of white photophores derived from the photograph (drawing to the right). The dots, representing photophores within or adjacent to the funnel groove are given various colors in the drawing to aid in their recognition.

Three additional types of dots (green, yellow and maroon), that are not present in the above example, are important.

Figure. A Complex 2 Pattern

The types of dots present in a squid pattern sometimes depends on the size of the squid. For example, see the series of Abraliopsis sp. A below. At 19 mm ML it exhibits the Simple Pattern; at 24 mm ML it exhibits a Complex 1 Pattern and at 28 mm ML it exhibits a Complex 2 Pattern (suggestive of ontogenetic recapitulation). For most species, the pattern typical for the species is present by the time it reaches sexual maturity. However, the yellow dots may appear well after maturity.
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. Patterns of white photophores of the funnel groove for all species of Watasenia and Abraliopsis examined.

About This Page

University of Hawaii, Honolulu, HI, USA

Correspondence regarding this page should be directed to Richard E. Young at

Page: Tree of Life Patterns of white photophores of the funnel groove. Authored by 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.

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