A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Appearance before performance? : Nutritional constraints on life‐history traits, but not warning signal expression in aposematic moths (2020)
Lindstedt, C., Suisto, K., & Mappes, J. (2020). Appearance before performance? : Nutritional constraints on life‐history traits, but not warning signal expression in aposematic moths. Journal of Animal Ecology, 89(2), 494-505. https://doi.org/10.1111/1365-2656.13103
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Lindstedt, Carita; Suisto, Kaisa; Mappes, Johanna
Lehti tai sarja: Journal of Animal Ecology
ISSN: 0021-8790
eISSN: 1365-2656
Julkaisuvuosi: 2020
Volyymi: 89
Lehden numero: 2
Artikkelin sivunumerot: 494-505
Kustantaja: Wiley; British Ecological Society
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1111/1365-2656.13103
Linkki tutkimusaineistoon: https://doi.org/10.5061/dryad.bj7bg83
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/65595
Tiivistelmä
2. We studied this with an aposematic herbivore Arctia plantaginis (Arctiidae), whose larvae and adults show extensive variation in aposematic colouration. In larvae, less melanic colouration (i.e. larger orange patterns) produces a more efficient warning signal against predators, whereas high amounts of melanism (smaller orange pattern) enhance thermoregulation, correlate with better immunity and make individuals harder to detect for naïve predators.
3. We conducted a factorial rearing experiment with larvae originating from lines selected for either small or large orange signal size, which were reared on an artificial diet that had either low or high protein content. Protein content of the diet is critical for melanin production. We measured the effects of diet on individual colouration, life‐history traits, immune defence and reproductive output. We also compared the responses to dietary conditions between the small and large larval signal genotypes.
4. Protein content of the diet did not affect warning colouration in the larval stage, but larval signal sizes differed significantly among selection lines, confirming that its variation is mainly genetically determined. In adults, signal line or diet did not affect colouration in hindwings, but males’ forewings had more melanin on the high than on low protein diet. Contrary to colouration, diet quality had a stronger impact on life‐history traits: individuals developed for longer, had smaller hindwing sizes in females and lower immune defence on the low protein content diet compared to the high. These costs were higher for more melanic larval signal genotypes in terms of development time and female hindwing size.
5. We conclude that low plasticity in warning signal characteristics makes signal expression robust under varying dietary conditions. Therefore, variation in diet quality is not likely to constrain signal expression, but can have a bigger impact on performance.
YSO-asiasanat: varoitusväri; genotyyppi; ravinto; pariutuminen; plastisuus
Vapaat asiasanat: phenotypic plasticity; diet; signal evolution; melanin; genotype-by-environment interaction
Liittyvät organisaatiot
Hankkeet, joissa julkaisu on tehty
- Petopuolustuksen kustannukset vaihtelevi
- Lindstedt-Kareksela, Carita
- Suomen Akatemia
- Biologisten vuorovaikutusten huippuyksikkö
- Mappes, Johanna
- Suomen Akatemia
OKM-raportointi: Kyllä
Raportointivuosi: 2020
JUFO-taso: 2