OKINAWAN
OPISTHOBRANCH OF THE WEEK
Chromodoris strigata Rudman, 1982 (32mm)
Opisthobranch of the Week Data
Taxonomy:
- Order: NUDIBRANCHIA
- Suborder: Doridina
- Family: Chromodorididae
Frequency on Okinawa:
Collection Data:
- Individual Collection No: RFB #3060
- Location: Seragaki, Okinawa (26o 30.4'N, 127o 52.6'E)
[Horseshoe, Seragaki]
- Date: 9 September, 1992 [19 Jun '92, 9 Sep '92]
- Depth: 170ft (52m) [10ft, 170ft]
- Water temperature at collection depth: Not recorded
- Size: TL 32mm [32mm, 40mm]
- Specimen deposited: RFB Personal Research Collection (different individuals of the
species deposited at Cal Acad Sci)
[brackets indicate range for all Okinawa-collected specimens of the species]
Species Account:
Chromodoris strigata is considered to be very rare on
Okinawa as I have seen and collected a total of only two individuals (June and September of
1992). C. strigata is one of several described species of striped Chromodoris
found in Okinawan waters. The above featured animal was found crawling in an area of mixed
sand and coral rubble at a depth of fifty-two meters during a mid-morning dive.
Rudman (1982) reports there are few records of the species and in
his initial description he found animals from the Great Barrier Reef, Queensland and from the
western Indian Ocean, north of Madagascar. Ono (1999) describes C. strigata being found
on Gahi Island, an island of the Kerama Islands group (as is Okinawa, part of the Ryukyu
Archipelago). The name "strigata" comes from the Latin, meaning streaky or striped.
Literature Cited:
- Ono, Atsushi. 1999. Opisthobranchs of Kerama Islands. TBS-Britannica & Co., Ltd.,
Japan, 184pp.
- Rudman, W.B. 1982. The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West
Pacific: Chromodoris quadricolor, C. lineolata and Hypselodoris
nigrolineata colour groups. Zoological Journal of the Linnean Society 76: 183-241.
Page Date: 03 Jan '00
Page Modification Date: 25 Mar '00
Digitally manipulated photo
Copyright © 2000 Robert F. Bolland