Size-dependent aggression towards kin in a cannibalistic species
Fouilloux, C. A., Fromhage, L., Valkonen, J. K., & Rojas, B. (2022). Size-dependent aggression towards kin in a cannibalistic species. Behavioral Ecology, 33(3), 582-591. https://doi.org/10.1093/beheco/arac020
Published inBehavioral Ecology
DisciplineBiologisten vuorovaikutusten huippututkimusyksikköEkologia ja evoluutiobiologiaEvoluutiotutkimus (huippuyksikkö)Centre of Excellence in Biological Interactions ResearchEcology and Evolutionary BiologyCentre of Excellence in Evolutionary Research
© 2022 the Authors
In juveniles extreme intraspecies aggression can seem counter-intuitive, as it might endanger their developmental goal of surviving until reproductive stage. Ultimately, aggression can be vital for survival, although the factors (e.g., genetic or environmental) leading to the expression and intensity of this behavior vary across taxa. Attacking (and sometimes killing) related individuals may reduce inclusive fitness; as a solution to this problem, some species exhibit kin discrimination and preferentially attack unrelated individuals. Here, we used both experimental and modeling approaches to consider how physical traits (e.g., size in relation to opponent) and genetic relatedness mediate aggression in dyads of cannibalistic Dendrobates tinctorius tadpoles. We paired full-sibling, half-sibling, and non-sibling tadpoles of different sizes together in an arena and recorded their aggression and activity. We found that the interaction between relative size and relatedness predicts aggressive behavior: large individuals in non-sibling dyads are significantly more aggressive than large individuals in sibling dyads. Unexpectedly, although siblings tended to attack less overall, in size-mismatched pairs they attacked faster than in non-sibling treatments. Using a theoretical model to complement these empirical findings, we propose that larval aggression reflects a balance between relatedness and size where individuals trade-off their own fitness with that of their relatives. ...
PublisherOxford University Press (OUP)
Dataset(s) related to the publicationhttps://doi.org/10.5061/dryad.zs7h44j6w
Publication in research information system
MetadataShow full item record
Related funder(s)Academy of Finland
Funding program(s)Research costs of Academy Research Fellow, AoF
Additional information about fundingThis study was supported by an Academy of Finland Research Fellowship (319949) to BR.
Showing items with similar title or keywords.
Alanen, Emmi (2020)The behaviour of an individual organism is a combination of previous experiences and genetic factors. In some situations, a behaviour of an individual may be repeatable or consistent. For my Master’s thesis, I studied the ...
Communication between the tadpoles of the dyeing poison frog Dendrobates tinctorius (Anura, Dendrobatidae) Kumpulainen, Nina (2022)Eläimet tarvitsevat kommunikointia eri tarkoituksiin, kuten parin muodostukseen, saalistajan havaitsemiseen ja reviirin hallintaan. Kemiallinen kommunikointi on kommunikoinnin muodoista vanhin ja yleisin. Sammakkoeläimet, ...
Schlippe Justicia, Lia; Fouilloux, Chloe A.; Rojas, Bibiana (Springer Science and Business Media LLC, 2022)The current and cascading effects of global change challenges the interactions both between animal individuals (i.e. social and sexual behaviour) and the environment they inhabit. Amphibians are an ecologically diverse ...
Avila, Piret (University of Jyväskylä, 2017)Biological altruism, deﬁned as a behaviour that beneﬁts others at an apparent cost to the focal individual, is found abundantly across diﬀerent levels of biological organization. While kin selection has been useful for ...
Carvajal-Castro, Juan D.; Vargas-Salinas, Fernando; Casas-Cardona, Santiago; Rojas, Bibiana; Santos, Juan C. (Nature Publishing Group, 2021)Many organisms have evolved adaptations to increase the odds of survival of their offspring. Parental care has evolved several times in animals including ectotherms. In amphibians, ~ 10% of species exhibit parental care. ...