Abstract

Formerly Aroui was a monotypic scopelocheirid genus known only from the Mediterranean Sea. The type species, Aroui setosus Chevreux, is redescribed. It is shown that a neotype, recently established for this species, is invalid, and a lectotype is selected from syntype material in the Museum National d'Histoire Naturelle, Paris. A second species, Aroui hamatopodus, is described, based on widespread collections from the Australian continental shelf and slope. The genus is rediagnosed and distinguished from all other scopelocheirids by two autapomorphic character states. Evidence is presented which suggests that scopelocheirids are very primitive scavengers, and that there is a three-way association between cassid gastropod predators, scopelocheirid amphipod scavengers and their common prey, spatangoid echinoids. An hypothesis is presented which suggests that scopelocheirid scavengers may have evolved by the early Tertiary and that the association involving cassid gastropods and spatangoid echinoids may date from this time.

 
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Bibliographic Data

Short Form
Lowry and Stoddart, 1989, Rec. Aust. Mus. 41(2): 111–120
Author
J. K. Lowry; H. E. Stoddart
Year
1989
Title
The scopelocheirid genus Aroui (Crustacea: Amphipoda: Lysianassoidea) with notes on the association between scopelocheirid amphipods, cassid gastropods and spatangoid echinoids
Serial Title
Records of the Australian Museum
Volume
41
Issue
2
Start Page
111
End Page
120
DOI
10.3853/j.0067-1975.41.1989.139
Language
English
Date Published
22 September 1989
Cover Date
22 September 1989
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Subjects
CRUSTACEA: AMPHIPODA; TAXONOMY
Digitized
20 September 2007
Available Online
27 February 2009
Reference Number
139
EndNote
/Uploads/Journals/17705/139.enw
Title Page
/Uploads/Journals/17705/139.pdf
File size: 92kB
Complete Work
/Uploads/Journals/17705/139_complete.pdf
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