English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Juvenile immune status affects the expression of a sexually selected trait in field crickets

Jacot, A., Scheuber, H., Kurtz, J., & Brinkhof, M. W. G. (2005). Juvenile immune status affects the expression of a sexually selected trait in field crickets. Journal of Evolutionary Biology, 18(4), 1060-1068. doi:10.1111/j.1420-9101.2005.00899.x.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D9B1-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D9B2-6
Genre: Journal Article

Files

show Files
hide Files
:
jacot_2005.pdf (Publisher version), 236KB
 
File Permalink:
-
Name:
jacot_2005.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute for Evolutionary Biology, Plön; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Jacot, A., Author
Scheuber, H., Author
Kurtz, J.1, Author              
Brinkhof, M. W. G., Author
Affiliations:
1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

Content

show
hide
Free keywords: allometry; Gryllus campestris; harp; immune challenge; LPS; melanization; parasite-mediated sexual selection; structural size
 Abstract: Parasite-mediated sexual selection theory presumes that variation in sexual traits reliably reflects variation in parasite resistance among available mates. One mechanism that may warrant signal honesty involves costs of immune system activation in the case of a parasitic infection. We investigated this hypothesis in male field crickets Gryllus campestris, whose attractiveness to females depends on characteristics of the sound-producing harp that are essentially fixed following adult eclosion. During the nymphal stage, males subjected to one of two feeding regimes were challenged with bacterial lipopolysaccharides (LPS) to investigate condition-dependent effects on harp development as compared to other adult traits. Nymphal nutritional status positively affected adult body size, condition, and harp size. However, nymphal immune status affected harp size only, with LPS-males having smaller harps than control-injected males. In addition, the harps of LPS-males showed a lesser degree of melanization, indicating an enhanced substrate use by the melanin-producing enzyme cascade of the immune system. Thus, past immune status is specifically mirrored in sexual traits, suggesting a key role for deployment costs of immunity in parasite-mediated sexual selection.

Details

show
hide
Language(s): eng - English
 Dates: 2005-07
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 233812
DOI: 10.1111/j.1420-9101.2005.00899.x
Other: 2366/S 38388
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Evolutionary Biology
  Alternative Title : J. evol. biol.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 18 (4) Sequence Number: - Start / End Page: 1060 - 1068 Identifier: ISSN: 1010-061X