A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Aposematism in the burying beetle? Dual function of anal fluid in parental care and chemical defense (2017)

Lindstedt, C., Boncoraglio, G., Cotter, S., Gilbert, J., & Kilner, R. M. (2017). Aposematism in the burying beetle? Dual function of anal fluid in parental care and chemical defense. Behavioral Ecology, 28(6), 1414-1422. https://doi.org/10.1093/beheco/arx100

JYU-tekijät tai -toimittajat

Lindstedt-Kareksela, Carita

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Lindstedt, Carita; Boncoraglio, Giuseppe; Cotter, Sheena; Gilbert, James; Kilner, Rebecca M

Lehti tai sarja: Behavioral Ecology

ISSN: 1045-2249

eISSN: 1465-7279

Julkaisuvuosi: 2017

Volyymi: 28

Lehden numero: 6

Artikkelin sivunumerot: 1414-1422

Kustantaja: Oxford University Press

Julkaisumaa: Britannia

Julkaisun kieli: englanti

DOI: https://doi.org/10.1093/beheco/arx100

Julkaisun avoin saatavuus: Ei avoin

Julkaisukanavan avoin saatavuus:

Tiivistelmä

Burying beetles (Nicrophorus vespilloides) bear distinctive and variable orange-black patterning on their elytra and produce an anal exudate from their abdomen when threatened. During breeding, the anal exudates contribute to the antimicrobial defense of the breeding resource. We investigated whether the anal exudates also provide a responsive chemical defense, which is advertised to potential avian predators by the beetle’s orange and black elytral markings. We found that that the orange-black elytral markings of the burying beetle are highly conspicuous for avian predators against range of backgrounds, by using computer simulations. Using bioassays with wood ants, we also showed that the burying beetle’s anal exudates are aversive to potential predators. From these results, and other evidence in the literature, we conclude that the evidence for aposematism in the burying beetle is as strong as the evidence for many other classically aposematic species, such as defended Hymenopterans, ladybirds, or poisonous frogs. Nevertheless, we also report unexpectedly high levels of individual variation in coloration and chemical defenses, as well as sex differences. We suggest that this variation might be partly due to conflicting selection pressures, particularly on the dual function of the exudates, and partly to nutritional differences in the developmental environment. The ecology of the burying beetles (Nicrophorus spp.) differs markedly from better-studied aposematic insects. This genus thus offers new potential for understanding the evolution of aposematism in general.

YSO-asiasanat: kovakuoriaiset; varoitusväri; mimikry; puolustus; eritteet