Color Signals in the Black Grouse (Tetrao tetrix): Signal Properties and Their Condition Dependency
Siitari, H., Alatalo, R. V., Halme, P., Buchanan, K., & Kilpimaa, J. (2007). Color Signals in the Black Grouse (Tetrao tetrix): Signal Properties and Their Condition Dependency. In American Naturalist (169, pp. S81-S92). American Naturalist. https://doi.org/10.1086/510140
Published in
American NaturalistDate
2007Recent progress in techniques of quantifying betweenindividual
differences of color-based ornaments has revealed undiscovered
possibilities for research in sexual selection. We present how
the color spectra data can be comprehensively used for studying the
importance of sexual ornaments in the black grouse and how these
ornaments are related to a male condition. For this, we used both
correlative field and experimental data. Field data indicated that older
males had more chromatic coloration than yearlings. Blue chroma
of males was correlated with male mating success. We experimentally
manipulated yearling birds with testosterone implants and found that
testosterone-implanted males had impaired expression of several sexual
ornaments: 10 months after the implantation, both structuralbased
blue and carotenoid-based red eye comb coloration were diminished,
as well as lyre (tail) length. However, the manipulation
did not affect vital traits under natural selection (wing length or body
mass). Our data indicate that structural color is an important trait
in sexual selection in this lekking species. Importantly, the data also
indicate that male sexual ornaments are more susceptible to environmental
conditions than the other male traits, thus showing their
heightened condition dependency compared with the other traits
mediating the honesty of signaling.
...
Is part of publication
American NaturalistISSN Search the Publication Forum
0003-0147Keywords
Publication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/16979353
Metadata
Show full item recordCollections
Related items
Showing items with similar title or keywords.
-
Condition-dependence of male sexual signalling in the drumming wolf spider Hygrolycosa rubrofasciata
Ahtiainen, Jari J. (Jyväskylän yliopisto, 2003)Jari Ahtiaisen väitöskirjatyön tutkimusten perusteella voidaan todeta, että H. rubrofasciata susihämähäkkinaaraat voivat käyttää koiraan seksuaalista kuntoa mittana arvioidessaan koiraan fenotyyppistä ja geneettistä laatua. ... -
Sex-biased dispersal and kin aggregation on leks in the black grouse (Tetrao tetrix)
Forss, Hanna (2007) -
Fitness in male black grouse (Tetrao tetrix) : effects of life histories and sexual selection on male lifetime mating success
Kervinen, Matti (University of Jyväskylä, 2013)