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Author |
Briard, L.; Deneubourg, J.-L.; Petit, O. |
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Title |
How stallions influence the dynamic of collective movements in two groups of domestic horses, from departure to arrival |
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Journal Article |
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Year |
2017 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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Volume |
142 |
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Pages |
56-63 |
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Keywords |
consensus; herding; polygyny; personal leadership; shared decision |
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Abstract The role of leader in polygynous species has been solely attributed to the male for some time, but recent studies shown decision making to be distributed within the group. However, the specific reproductive strategy and behavioural repertoire of males in polygynous species such as horses may mean that these individuals still have the potential to play a specific role during decision-making. To investigate this subject, we thoroughly studied the behaviour of two domestic stallions during collective movements of their group. We found that they initiated rarely and sometimes failed to recruit the entire group. When departing as followers, they did not accelerate the joining process. Both stallions preferentially occupied the rear position and exhibited numerous monitoring behaviours. Herding behaviours were performed by only one stallion and mostly occurred outside movement context. Finally, we removed this herding stallion from its group to evaluate how the group dynamic changed. As a result, half of the collective movements were five times slower and mares were more dispersed in comparison when the stallion was in the group. Overall, our results suggest that, the two stallions maintained their role of group monitors from departure to arrival. Their influence on the movement dynamic was indirect and did not play a specific role in the process of decision making. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6151 |
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Author |
da Cruz, A.B.; Hirata, S.; dos Santos, M.E.; Mendonça, R.S. |
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Title |
Show me your best side: Lateralization of social and resting behaviors in feral horses |
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Journal Article |
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Year |
2023 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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206 |
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Pages |
104839 |
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Keywords |
Cerebral lateralization; Drone technology; ; Hemispheric specialization; Horses; Social interactions |
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Abstract |
Growing evidence shows a variety of sensorial and motor asymmetries in social and non-social interactions in various species, indicating a lateralized processing of information by the brain. Using digital video cameras on tripods and drones, this study investigated lateralization in frequency and duration of social behavior patterns, in affiliative, agonistic, and resting contexts, in a feral population of horses (Equus ferus caballus) in Northern Portugal, consisting of 37 individuals organized in eight harem groups. Affiliative interactions (including grooming) were more often performed, and lasted longer, when recipients were positioned to the right side. In recumbent resting (animals lying down) episodes on the left side lasted longer. Our results of an affiliative behavior having a right side tendency, provide partial support to the valence-specific hypothesis of Ahern and Schwartz (1979) – left hemisphere dominance for positive affect, affiliative behaviors. Longer recumbent resting episodes on the left side may be due to synchronization. However, in both instances it is discussed how lateralization may be context dependent. Investigating the position asymmetries of social behaviors in feral equids will contribute to a better understanding of differential lateralization and hemispheric specialization from the ecological and evolutionary perspectives. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6697 |
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Author |
da Cruz, A.B.; Hirata, S.; dos Santos, M.E.; Mendonça, R.S. |
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Title |
Show me your best side: Lateralization of social and resting behaviors in feral horses |
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Journal Article |
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Year |
2023 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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206 |
Issue |
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Pages |
104839 |
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Keywords |
Cerebral lateralization; Drone technology; ; Hemispheric specialization; Horses; Social interactions |
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Abstract |
Growing evidence shows a variety of sensorial and motor asymmetries in social and non-social interactions in various species, indicating a lateralized processing of information by the brain. Using digital video cameras on tripods and drones, this study investigated lateralization in frequency and duration of social behavior patterns, in affiliative, agonistic, and resting contexts, in a feral population of horses (Equus ferus caballus) in Northern Portugal, consisting of 37 individuals organized in eight harem groups. Affiliative interactions (including grooming) were more often performed, and lasted longer, when recipients were positioned to the right side. In recumbent resting (animals lying down) episodes on the left side lasted longer. Our results of an affiliative behavior having a right side tendency, provide partial support to the valence-specific hypothesis of Ahern and Schwartz (1979) – left hemisphere dominance for positive affect, affiliative behaviors. Longer recumbent resting episodes on the left side may be due to synchronization. However, in both instances it is discussed how lateralization may be context dependent. Investigating the position asymmetries of social behaviors in feral equids will contribute to a better understanding of differential lateralization and hemispheric specialization from the ecological and evolutionary perspectives. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6711 |
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Author |
Pimenta, V.; Barroso, I.; Boitani, L.; Beja, P. |
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Title |
Risks a la carte: Modelling the occurrence and intensity of wolf predation on multiple livestock species |
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Journal Article |
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Year |
2018 |
Publication |
Biological Conservation |
Abbreviated Journal |
Biol. Conserva. |
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228 |
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331-342 |
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Human-wildlife conflict; Large carnivores; Livestock husbandry systems; Predation risk; Predation intensity |
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Predation on livestock is a source of human-wildlife conflicts and can undermine the conservation of large carnivores. To design effective mitigation strategies, it is important to understand the determinants of predation across livestock species, which often differ in husbandry practices, vulnerability to predators and economic value. Moreover, attention should be given to both predation occurrence and intensity, because these can have different spatial patterns and predictors. We used spatial risk modelling to quantify factors affecting wolf predation on five livestock species in Portugal. Within the 1619 parishes encompassing the entire wolf range in the country, the national wolf compensation scheme recorded 17,670 predation events in 2009-2015, each involving one or more livestock species: sheep (31.7%), cattle (27.7%), goats (26.8%), horses (14.8%) and donkeys (3.2%). Models built with 2009-2013 data and validated with 2014-2015 data, showed a shared general pattern of predation probability on each species increasing with its own density and proximity to wolf packs. For some species there were positive relations with the density of other livestock species, and with habitat variables such as altitude, and land cover by shrubland and natural pastures. There was also a general pattern for predation intensity on each species increasing with its own density, while proximity to wolf packs had no significant effects. Predation intensity on goats, cattle and horses increased with the use of communal versus private pastures. Our results suggest that although predation may occur wherever wolves coexist with livestock species, high predation intensity is mainly restricted to particular areas where husbandry practices increase the vulnerability of animals, and this is where mitigation efforts should concentrate. |
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0006-3207 |
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Equine Behaviour @ team @ |
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6438 |
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Author |
Bandini , E.; Motes-Rodrigo, A.; Steele, M.P.; Rutz, C.; Tennie, C. |
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Title |
Examining the mechanisms underlying the acquisition of animal tool behaviour |
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Journal Article |
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Year |
2020 |
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Biology Letters |
Abbreviated Journal |
Biol. Lett. |
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16 |
Issue |
2020122 |
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Equine Behaviour @ team @ |
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6660 |
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Voigtlaender-Schnabel, S.; Vogel, L.; Greiner, B.; Wiezorek, S.; Schuette, P.; Solmsen, E.-H.; Martin; H.; Hempel, E.; Gruentjens, T.; Bathen, M.; Herold, P.; Krueger, K. |
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Reactions of horses to wildlife and livestock guarding dogs |
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Journal Article |
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Year |
2022 |
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Carnivore Damage Prevention News |
Abbreviated Journal |
CDPNews |
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24 |
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49-58 |
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Equine Behaviour @ team @ |
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6668 |
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Author |
Freitas, J.; Lagos, L.; Álvares, F. |
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Horses as prey of wolves. |
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Journal Article |
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2021 |
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Carnivore Damage Preventionnews |
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CDPnews |
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23 |
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1-9 |
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Equine Behaviour @ team @ |
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6677 |
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Author |
Lagos, L.; Blanco, P. |
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Title |
Testing the use of dogs to prevent wolf attackson free ranging ponies in Iberia? |
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Year |
2021 |
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Carnivore Damage Prevention News |
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CDPnews |
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23 |
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20-27 |
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Equine Behaviour @ team @ |
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6679 |
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Lagos, L.; Bárcena, F. |
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How to reduce wolf predation on wild ponies in Galicia? |
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2022 |
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Carnivore Damage Prevention News |
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CDPNews |
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24 |
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24-31 |
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Equine Behaviour @ team @ |
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6680 |
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Author |
Lema, F.J.; Ribeiro, S.; Palacios, V. |
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Observations of wolves hunting fee-ranging horses in Iberia. |
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2022 |
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Carnivore Damage Prevention News |
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CDPNews |
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24 |
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1-9 |
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Equine Behaviour @ team @ |
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6681 |
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