Sclerodoris tuberculata Eliot, 1904 (35mm)
OPISTHOBRANCH OF THE WEEK
Photo by Atsushi Ono
Opisthobranch of the Week Data
Frequency on Okinawa:
- Order: NUDIBRANCHIA
- Suborder: Doridacea
- Family: Dorididae
[brackets indicate range for all Okinawa-collected specimens of the species]
- Individual Collection No: Atsushi Ono #592
- Location: Amuro Island, Kerama Islands, Okinawa
- Date: 26 June, 2001 [none collected by rfb, only a single specimen collected by Ono in the Keramas]
- Depth: 92ft (28m) [only a single collected specimen ]
- Water temperature at collection depth: ca. 77oF (ca. 25oC)
- Size: TL 35mm
- Specimen deposited: Atsushi Ono Personal Research Collection
Sclerodoris tuberculata is considered to be very rare in Okinawan waters; I've not seen the animal here on Okinawa's main island and
Atsushi Ono mentions (per. comm.) having seen only the above featured single animal from the Keramas*. This 35mm animal was collected by Atsushi during June of 2001 from a sandy bottom off Amuro Island.
Rudman (1978) points out some of the taxonomic problems encountered with a series of synonymies of the species and has selected Sclerodoris tuberculata to be the type species for Sclerodoris.
Dave Behrens (1999), has a
description of the species on Mike Miller's Slug Site as well as Mike featuring a great photo of the animal from Batangas, Philippines, by Jeff Rosenfeld. This photo by Jeff shows quite nicely the dorsal midline pit, which mimics the osculum of a sponge. This dorsal midline pit is one of the consistent characters (Rudman, 2002) seen in this variably colored dorid.
- Behrens, D. 1999. Sclerodoris tuberculata Eliot, 1904 [In] Mike Miller's Slug Site. http://slugsite.us/bow/nudwk198.htm
- Rudman, W.B. 1978. The dorid opisthobranch genera Halgerda and Sclerodoris from the Indo-West Pacific. Zoological Journal of the Linnean Society 62: 59-88.
- Rudman, W.B. 2002. (May 20) Sclerodoris tuberculata Eliot, 1904. [In] Sea Slug Forum. http://www.seaslugforum.net/scletube.htm
* Keramas = the Kerama Islands Group, located 30 ~ 40 kilometers west of the Okinawa capitol, Naha.
Page Date: 17 Mar '03
Page Modification Date: 17 Mar '03
Digitally manipulated photo
Copyright © 2003 Robert F. Bolland