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Web-building time in a spider: preliminary applications of ultrasonic detection.

Authors
  • Ramousse, R
  • Davis, F 3rd
Type
Published Article
Journal
Physiology & Behavior
Publisher
Elsevier
Publication Date
Dec 01, 1976
Volume
17
Issue
6
Pages
997–1000
Identifiers
PMID: 14677594
Source
Medline
License
Unknown

Abstract

Data collection on time and length of building in orb-weaving spiders has suffered from absence of light during construction and inconvenient hours. A simple apparatus is described which permits recording of the spiders' movements as they disturb an ultrasonic field. By varying onset and length of dark periods for two animals at even temperature and by registering the building periods for 127 webs, a definite influence of the light-dark cycle can be identified: there is a strong preference for building webs in the dark; this is superimposed on the circadian rhythm of orb-web construction. One of the spiders always built earlier than the other.

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