JYX > Opinnäytteet > Pro gradu -tutkielmat > View Item
The effects of sex pheromone on female attractiveness and its role in maintaining color polymorphism in Arctia plantaginis
The author has not given permission to make the work publicly available electronically. Therefore the material can be read only at the archival workstation at Jyväskylä University Library (https://kirjasto.jyu.fi/collections/archival-workstation).
This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.
Natural and sexual selection can cause opposing selection pressures, which might help explain the maintenance of color polymorphism. It is a particularly puzzling phenomenon in aposematic species, such as the wood tiger moth (Arctia plantaginis), who should face strong selection for monomorphism. Wood tiger moth males in Finnish populations maintain two color morphs: white and yellow. The coloration is determined by one locus two allele mode of inheritance with a dominant allele for white (W) and a recessive allele for yellow coloration (y). While females also carry this gene, they do not express it phenotypically. I examined the role of sexual selection in maintaining color polymorphism by studying female attractiveness and its correlation with the total amount and the amounts of the compounds of female sex pheromone used to attract potential mates. Homozygous yellow females and heterozygous females attracted significantly more males in total than homozygous white females. The absolute amount of sex pheromone did not affect female attractiveness, but the relative amount of a minor compound had a positive correlation with attractiveness. The results also suggest that this correlation differs between female genotypes, despite them having similar amounts of all pheromone compounds. These results suggest that sexual selection has a role in maintaining color polymorphism in the wood tiger moth. The advantage gained by females carrying one or two yellow alleles may be balanced by other selective forces. ...
MetadataShow full item record
- Pro gradu -tutkielmat 
Showing items with similar title or keywords.
Predator-Induced Plasticity on Warning Signal and Larval Life-History Traits of the Aposematic Wood Tiger Moth, Arctia plantaginis Abondano Almeida, Diana; Mappes, Johanna; Gordon, Swanne (Frontiers Media SA, 2021)Predator-induced plasticity in life-history and antipredator traits during the larval period has been extensively studied in organisms with complex life-histories. However, it is unclear whether different levels of predation ...
Evolution of signal diversity : predator-prey interactions and the maintenance of warning colour polymorphism in the wood tiger moth Arctia plantaginis Rönkä, Katja (University of Jyväskylä, 2017)Aposematic organisms avoid predation by advertising defences with warning signals. The theory of aposematism predicts warning signal uniformity, yet variation in warning coloration is widespread. The chemically defended ...
Many forms of the wood tiger moth (Parasemia plantaginis) : selective heterogeneity favours polymorphic warning signals Nokelainen, Ossi (University of Jyväskylä, 2013)
Geographic mosaic of selection by avian predators on hindwing warning colour in a polymorphic aposematic moth Rönkä, Katja; Valkonen, Janne K.; Nokelainen, Ossi; Rojas, Bibiana; Gordon, Swanne; Burdfield‐Steel, Emily; Mappes, Johanna (Wiley-Blackwell, 2020)Warning signals are predicted to develop signal monomorphism via positive frequency‐dependent selection (+FDS) albeit many aposematic systems exhibit signal polymorphism. To understand this mismatch, we conducted a large‐scale ...
Costs and benefits of pyrrolizidine alkaloid sequestration in the wood tiger moth (Arctia plantaginis) Mähönen, Marjut (2022)Aposemaattiset lajit, kuten generalisti täpläsiilikäs (Arctia plantaginis), viestivät syömäkelvottomuudestaan pedoille esim. kirkkain värein. Täpläsiilikäs käyttää puolustuksessaan ravinnosta eristämiään pyrrolitsidiinialkaloideja ...