Size does matter: crocodile mothers react more to the voice of smaller offspring
| Autor: | Jesús D. González Acosta, Nicolas Mathevon, Thierry Aubin, Amy Colin, Stéphane L. Bourquin, V. Shacks, T. Chabert, Ruth M. Elsey |
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| Přispěvatelé: | Institut des Neurosciences Paris-Saclay (NeuroPSI), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Okavango Crocodile Monitoring Programme, Louisiana Department of Wildlife and Fisheries, Fundo Pecuario Masaguaral, Francisco de Miranda, Department of Psychology [Hunter College], Hunter College [CUNY, New York], City University of New York [New York] (CUNY)-City University of New York [New York] (CUNY) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
animal structures Nile crocodile Offspring [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology Zoology Body size Crocodile 010603 evolutionary biology 01 natural sciences Article 03 medical and health sciences biology.animal Animals Body Size Juvenile 030304 developmental biology Alligators and Crocodiles 0303 health sciences Multidisciplinary Breeding in the wild biology [SDV.NEU.PC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behavior Ecology [SDV.NEU.SC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Cognitive Sciences Biological dispersal Female Paternal care |
| Zdroj: | Scientific Reports Scientific Reports, Nature Publishing Group, 2015, 5, pp.15547. ⟨10.1038/srep15547⟩ |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/srep15547⟩ |
| Popis: | Parental care is widespread in Archosaurs (birds, crocodilians, dinosaurs and pterosaurs) and this group provides a useful model for the evolution of parent-offspring interactions. While offspring signalling has been well-studied in birds, the modulation of parental care in crocodilians remains an open question. Here we show that acoustic communication has a key role in the dynamics of crocodilian’ mother-offspring relationships. We found embedded information about the emitter’s size in juvenile calls of several species and experimentally demonstrated that Nile crocodile mothers breeding in the wild are less receptive to the calls of larger juveniles. Using synthetized sounds, we further showed that female’ reaction depends on call pitch, an important cue bearing size information. Changes in acoustic interactions may thus go with the break of maternal care as well as dispersal of juvenile crocodilians. This process could have characterized other archosaurs displaying rapid early growth such as dinosaurs and pterosaurs. |
| Databáze: | OpenAIRE |
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