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Behavioral Ecology Advance Access originally published online on August 11, 2004
Behavioral Ecology 2005 16(2):497-498; doi:10.1093/beheco/arh137
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Behavioral Ecology vol. 16 no. 2 © International Society for Behavioral Ecology 2004; all rights reserved.

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The spatial and temporal repeatability of PHA-responses

Martin Granbom, Lars Råberg and Henrik G. Smith

Department of Animal Ecology, Lund University, S-223 62 Lund, Sweden

Address correspondence to M. Granbom. E-mail: martin.granbom@zooekol.lu.se.

Received 7 January 2004; revised 25 May 2004; accepted 1 June 2004.

The first 10% of the full text of this article appears below.


   INTRODUCTION
 
The capacity to mount a cell-mediated immune response in birds is often quantified as the swelling following an injection of phytohaemagglutinin (PHA) into the wing-web. Most studies have found the repeatability of consecutive measurements of the same swelling to be high (e.g., Alonso-Alvarez and Tella, 2001Go; Fargallo et al., 2002Go; Saino et al., 1997Go; Smits et al., 1999Go; Tella et al., 2000Go). However, as pointed out by Siva-Jothy and Ryder (2001)Go, repeatability calculated this way only estimates the precision with which an experimenter measures the size of a particular swelling; it does not encompass other components of measurement error. Furthermore, such estimates of repeatability do not capture temporal variation in individuals' PHA-responses. To our knowledge, no study has reported the latter types . . . [Full Text of this Article]


   MATERIALS AND METHODS
 

   RESULTS
 
Spatial repeatability
Temporal repeatability

   DISCUSSION
 

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