|dc.contributor.advisor||Getty, Thomas Reed||
|dc.contributor.author||Rockwell, Sarah M.||
|dc.description||1 broadside ; ill.||
- Signals are a form of animal communication important in
intraspecific interactions. An assessment signal conveys
information about the condition of a conspecific.
- There is a selective advantage for males that can accurately
assess an opponent’s relative fighting ability during a contest,
and for females that can choose the most fit male to mate with.
- Reliable assessment signals evolve due to the mutual
benefits of avoiding the high energetic costs of fighting.
- Adult male damselflies defend streamside territories to
attract mates, a strategy known as resource defense polygyny.
- Aggressive encounters between territorial males include
chasing, face-off displays, and spiral fights.
- Fat reserves in damselflies are a good predictor of fight
outcomes (Marden & Waage 1990, Marden & Rollins 1994).
- The published data is divided on whether damselflies can
assess relative fighting abilities in a contest.
- Fitzstephens & Getty (2000) proposed abdomen color as a
possible mechanism for assessment, and found that males with
high fat contents were significantly more likely to be blue.||en
|dc.description.sponsorship||W.K. Kellogg Biological Station||
|dc.description.sponsorship||Kalamazoo College. Department of Biology. Diebold Symposium, 2002||
|dc.description.tableofcontents||Introduction -- Hypotheses -- Materials and methods -- Results -- Conclusions||
|dc.subject.lcsh||Color of animals||
|dc.title||Color as an assessment signal in the black-winged damselfly||en