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Lateralization in monogamous pairs:wild geese prefer to keep their partner in the left hemifield except when disturbed

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Current Zoology 2021年第4期67卷 419-429页

作者： Elmira Zaynagutdinova Karina Karenina andrey giljov Department of Vertebrate Zoology Faculty of BiologySaint Petersburg State UniversityUniversitetskaya nab.7-9St Petersburg199034Russia

Behavioural lateralization,which reflects the functional specializations of the two brain hemispheres,is assumed to play an important role in cooperative intraspecific ***,there are few studies focused on the lateralization in cooperative behaviours of individuals,especially in a natural *** the present study,we investigated Iateralized spatial interactions between the partners in life-long monogamous *** male-female pairs of two geese species(barnacle,Branta leucopsis,and white-fronted,Anser albifrons geese),were observed during different stages of the annual cycle in a variety of *** geese flocks,we recorded which visual hemifield(left/right)the following partner used to monitor the leading partner relevant to the type of behaviour and the disturbance *** a significant majority of pairs,the following bird viewed the leading partner with the left eye during routine behaviours such as resting and feeding in undisturbed *** behavioural lateralization,implicating the right hemisphere processing,was consistent across the different aggregation sites and years of the *** contrast,no significant bias was found in a variety of geese behaviours associated with enhanced disturbance(when alert on water,flying or fleeing away when disturbed,feeding during the hunting period,in urban area feeding and during moulting).We hypothesize that the increased demands for right hemisphere processing to deal with stressful and emergency situations may interfere with the manifestation of lateralization in social interactions.

关键词： hemispheric dominance left eye bias visual lateralization social behaviour monogamy anthropogenic disturbance

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