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Weaponry, color, and contest success in the jumping spider Lyssomanes viridis

Tedore, Cynthia LU and Johnsen, Sönke (2012) In Behavioural Processes 89. p.203-211
Abstract
Weaponry and color badges are commonly theorized to function as visual signals of aggressiveness or fighting ability. However, few studies have supported a signaling function of weaponry, and the role of color in invertebrate competitive interactions remains virtually unexplored. Jumping spiders (Salticidae) make excellent invertebrate models for studying weaponry and color because males of many species are colorful and possess exaggerated chelicerae, which are used as weapons in escalated contests. To determine whether color or weaponry might function as visual signals in male-male competitions, we investigated relationships between contest success, cheliceral length, and red coloration in Lyssomanes viridis. Males having longer... (More)
Weaponry and color badges are commonly theorized to function as visual signals of aggressiveness or fighting ability. However, few studies have supported a signaling function of weaponry, and the role of color in invertebrate competitive interactions remains virtually unexplored. Jumping spiders (Salticidae) make excellent invertebrate models for studying weaponry and color because males of many species are colorful and possess exaggerated chelicerae, which are used as weapons in escalated contests. To determine whether color or weaponry might function as visual signals in male-male competitions, we investigated relationships between contest success, cheliceral length, and red coloration in Lyssomanes viridis. Males having longer chelicerae than their opponents were significantly more likely to win (p=0.0008). Males who won, despite being smaller than their opponents, had significantly less red chelicerae than their opponents (p=0.01). Male and female cheliceral length, as well as foreleg length, correlated tightly with body size. Cheliceral and foreleg length showed significantly stronger positive allometry in males than in females. We conclude that male chelicerae and forelegs are under strong positive selection for their use in physical fights and/or as visual signals of fighting ability. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Female, Competitive Behavior/*physiology, Color, Animal/*physiology, Behavior, Aggression/*physiology, Animals, Male, Mating Preference, Spiders/*physiology
in
Behavioural Processes
volume
89
pages
203 - 211
publisher
Elsevier
external identifiers
  • scopus:84857138828
ISSN
0376-6357
DOI
10.1016/j.beproc.2011.10.017
language
English
LU publication?
no
id
a17a0469-e600-4dc7-a75a-8366e1f4cc50 (old id 4739413)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/22093800
date added to LUP
2014-11-07 14:12:18
date last changed
2017-10-01 04:57:50
@article{a17a0469-e600-4dc7-a75a-8366e1f4cc50,
  abstract     = {Weaponry and color badges are commonly theorized to function as visual signals of aggressiveness or fighting ability. However, few studies have supported a signaling function of weaponry, and the role of color in invertebrate competitive interactions remains virtually unexplored. Jumping spiders (Salticidae) make excellent invertebrate models for studying weaponry and color because males of many species are colorful and possess exaggerated chelicerae, which are used as weapons in escalated contests. To determine whether color or weaponry might function as visual signals in male-male competitions, we investigated relationships between contest success, cheliceral length, and red coloration in Lyssomanes viridis. Males having longer chelicerae than their opponents were significantly more likely to win (p=0.0008). Males who won, despite being smaller than their opponents, had significantly less red chelicerae than their opponents (p=0.01). Male and female cheliceral length, as well as foreleg length, correlated tightly with body size. Cheliceral and foreleg length showed significantly stronger positive allometry in males than in females. We conclude that male chelicerae and forelegs are under strong positive selection for their use in physical fights and/or as visual signals of fighting ability.},
  author       = {Tedore, Cynthia and Johnsen, Sönke},
  issn         = {0376-6357},
  keyword      = {Female,Competitive Behavior/*physiology,Color,Animal/*physiology,Behavior,Aggression/*physiology,Animals,Male,Mating Preference,Spiders/*physiology},
  language     = {eng},
  pages        = {203--211},
  publisher    = {Elsevier},
  series       = {Behavioural Processes},
  title        = {Weaponry, color, and contest success in the jumping spider Lyssomanes viridis},
  url          = {http://dx.doi.org/10.1016/j.beproc.2011.10.017},
  volume       = {89},
  year         = {2012},
}