Abstract

Since the family Lysianassidae is one of the largest and most diverse in the order Amphipoda it is suitable for the study of adaptations to different zoogeographic regions. The fauna is best known in regions of cold water (polar oceans and deep sea). Here most species are relatively small (6-13 mm) but a small number of large species are also found. In tropical waters such as the Indo-Pacific lysianassids are less well known and less conspicuous. The species are smaller and there is an apparent lack of large species. The problem is therefore not the occurrence of giants in cold water habitats but rather the small size of tropical species. While increased predation or competition could be responsible it is suggested here that the differences are probably due to shorter life spans at the higher temperatures in tropical waters. The species mature at a small size and produce small clutches of small eggs. In cold water survival is greater and the species mature at a larger size and infrequently produce large clutches of large eggs.

 
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Bibliographic Data

Short Form
Steele, 1984, Aust. Mus. Mem. 18(10): 113–119
Author
D. H. Steele
Year
1984
Title
Size composition of lysianassid amphipods in cold and warm water habitats
Serial Title
Australian Museum Memoir
Volume
18
Issue
10
Start Page
113
End Page
119
DOI
10.3853/j.0067-1967.18.1984.377
Language
English
Date Published
31 March 1984
Cover Date
31 December 1983
ISSN
0067-1967
CODEN
AUNMA5
Publisher
The Australian Museum
Place Published
Sydney, Australia
Subjects
CRUSTACEA: AMPHIPODA
Digitized
09 September 2009
Reference Number
377
EndNote
/Uploads/Journals/17612/377.enw
Title Page
/Uploads/Journals/17612/377.pdf
File size: 115kB
Complete Work
/Uploads/Journals/17612/377_complete.pdf
File size: 568kB