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Effect of social organisation on interspecific differences in overmarking behaviour of foals in African equids

  • Jan PluháčekEmail author
  • Vladimíra Tučková
  • Radka Šárová
  • Sarah R. B. King
Original Paper

Abstract

Overmarking remains an unstudied topic in juvenile mammals. We have previously documented a very high rate of overmarking by foals in four captive African equid species: mountain zebra (Equus zebra), plains zebra (Equus quagga), Grévy’s zebra (Equus grevyi), and African wild ass (Equus africanus). African equids vary interspecifically in their social organisation. Since differences in social organisation affect many mammalian behaviours, in this study we investigated interspecific differences in overmarking behaviour of foals, analysing only cases where elimination of any other individual was explored by a foal. We hypothesised that the pattern of overmarking by foals should reflect either differences in social organisation of the species or phylogenetic relations among them. We found that in all species very young foals explored mostly maternal eliminations, and this preference declined with increasing age of the foal and reflected the social organisation of the species; the highest overmarking rate was in species with high intragroup aggression (mountain zebra) and lowest in species with low intragroup aggression and which form crèches (African wild ass). Similarly, the rate of overmarking of the mother, as opposed to other herdmates, was associated with social organisation of the respective species. Thus, we found interspecific differences in overmarking by foals, which were associated with variability in social organisation. Since we also revealed differences between African wild ass and zebra behaviour in early stages of ontogeny, we cannot refute the effect of phylogeny on overmarking behaviour. Additionally, our results supported the identity sharing hypothesis as an explanation of overmarking.

Keywords

Equus Interspecific differences Marking behaviour Olfactory communication Social organisation Zebra African wild ass 

Notes

Acknowledgements

The authors gratefully acknowledge the assistance of the Zoological Garden staff at Dvůr Králové, Brno, Liberec, Ostrava, and Ústí nad Labem, in particular Luděk Čulík, Markéta Čulíková, Aleš Kopecký, Jiří Soumar, Miroslava Kubelková, Miroslava Doležalová, Pavel Moucha, Radek Hlávka, Lubomír Melichar, Jiří Vítek, Petra Padalíková, Pavel Král, Jaroslav Novák, Rostislav Střižík, Eva Zajoncová, and Lenka Málcová. This work was supported by the Ministry of Agriculture of the Czech Republic (MZE-RO0719) and by Grant no. 2011/008 of the Student Grant Agency of the University of South Bohemia.

Compliance for ethical standard

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical standard

The study was designed according to laws of the European Union and Czech Republic.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of EthologyInstitute of Animal SciencePraha-UhříněvesCzech Republic
  2. 2.Ostrava ZooOstravaCzech Republic
  3. 3.Department of Biology and Ecology, Faculty of ScienceUniversity of OstravaOstravaCzech Republic
  4. 4.Department of Zoology, Faculty of ScienceUniversity of South BohemiaČeské BudějoviceCzech Republic
  5. 5.Natural Resource Ecology Laboratory, Warner College of Natural ResourcesColorado State UniversityFort CollinsUSA

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