ScienceDirect® Home Skip Main Navigation Links
You have guest access to ScienceDirect. Find out more.
 
Home
Browse
My Settings
Alerts
Help
 Quick Search
 Search tips (Opens new window)
    Clear all fields    
Animal Behaviour
Volume 31, Issue 2, May 1983, Pages 424-430
Result list |  previous  < 154 of 166 >  next 
Font Size: Decrease Font Size  Increase Font Size
 Abstract - selected
Purchase PDF (637 K)

Article Toolbox
 
 
 
Related Articles in ScienceDirect
View More Related Articles
 
View Record in Scopus
doi:10.1016/S0003-3472(83)80062-1    
How to Cite or Link Using DOI (Opens New Window)

Copyright © 1983 Published by Elsevier Ltd.

Temperature-dependent behaviours and cluster formation by aggregating ladybird beetles
Purchase the full-text article



References and further reading may be available for this article. To view references and further reading you must purchase this article.

Newton H. Coppa

aJoint Sciences Department, The Claremont Colleges, Claremont, CA 91711, U.S.A.


Received 1 June 1982; 
revised 7 July 1982. 
MS. number: a2878. 
Available online 3 June 2006.

Abstract

At their winter aggregation sites, convergent ladybird beetles, Hippodamia convergens (Coccinellidae), become active during snow-free days but form dense clusters in protected microhabitats at night. This daily dispersal and nightly reformation of clusters is correlated with two temperature-sensitive behaviours. Laboratory experiments demonstrated that ladybird beetles become photopositive as the temperature in a controlled environment room decreases from 20 C to 7 C, but they revert to a photonegative response as the temperature falls below 5 C. Also, ladybird beetles tend to form clusters as the temperature falls from 35 C to about 15 C. An attractant pheromone assists in cluster formation. Possible selective advantages of cluster formation by ladybird beetles are discussed.


Animal Behaviour
Volume 31, Issue 2, May 1983, Pages 424-430
Result list | previous < 154 of 166 > next 
 
Home
Browse
My Settings
Alerts
Help
Elsevier.com (Opens new window)
About ScienceDirect  |  Contact Us  |  Information for Advertisers  |  Terms & Conditions  |  Privacy Policy
Copyright © 2009 Elsevier B.V. All rights reserved. ScienceDirect® is a registered trademark of Elsevier B.V.