Dendrodoris fumata (Ruppell & Leuckart, 1830) 47mm
OPISTHOBRANCH OF THE WEEK
Opisthobranch of the Week Data
Frequency on Okinawa:
- Order: NUDIBRANCHIA
- Suborder: Doridina
- Family: Dendrodorididae
[brackets indicate range for all Okinawa-collected specimens of the species]
- Individual Collection No: RFB #2351-A
- Onna Flats, South end, 2.5 km SW Onna Village, Okinawa. (26o 28.4'N,
127o 50.8'E) [Onna Flats, White Beach, Yamada Hot Springs]
- Date: 25 April, 1990 [31 Mar '87, 9 Mar '89, 25 Apr '90 (2 indiv), 1 Apr '91]
- Depth: Intertidal [all specimens Intertidal]
- Water temperature at collection depth: Not recorded (air temperature ca.
- Size: TL 47mm [35mm, 35mm, 40mm, 46mm, 47mm, 55mm]
- Specimen deposited: RFB Personal Research Collection
Dendrodoris fumata, much the same as other members of the
genus, has a soft, slimy-feeling body. Okinawan specimens range from a deep red color to a
decidedly pink color; I've included two additional images,
illustrating some modest color variation. The above featured animal was found during a minus
tide "reef walk" at approximately 13:00pm. Two animals (47mm & 55mm) of the same color were
found side by side (however, not mating), as a slab of rubble was overturned. Brodie, Willan, & Collins (1997) recognize three anatomically indistinguishable color forms of D. fumata (grey, black and orange/red forms). The authors point out that the orange/red form has been widely recognized under the name rubra by numerous authors and is considered to be a synonym of D. fumata.
D. fumata is considered to be rare on Okinawa as I've
collected a total of six individuals since the first was collected in March of 1987. Several
others have been seen but neither collected nor photographed.
Dendrodoris fumata is one of eight described species of
Dendrodoris found on Okinawa. The eight species are:
- Brodie, G.D., Willan, R.C. & Collins, J.D. 1997. Taxonomy and occurrence of Dendrodoris nigra and Dendrodoris fumata (Nudibranchia: Dendrodorididae) in the Indo-West Pacific region. J. Molluscan Stud. 63(3): 407-423.
- Marshall, J.G. & Willan, R.C. 1999. Nudibranchs of Heron Island, Great Barrier Reef - A Survey of the Opisthobranchia (Sea Slugs) of Heron and Wistari Reefs. Backhuys
Page Date: 28 Apr '03
Page Modification Date: 22 Dec '03
Digitally manipulated photo
Copyright © 2003 Robert F. Bolland