Sundin, Josefin
- Norges teknisk-naturvitenskapelige universitet (NTNU)
- Uppsala universitet
Sammanfattning
Behavioural lateralization, the asymmetric expression of cognitive functions, is reported to enhance key fitness-relevant traits such as group coordination, multitasking and predator escape. Therefore, studies reporting negative effects on lateralization in fish due to environmental stressors such as ocean acidification, hypoxia and pollutants are worrisome. However, such studies tend to use a detour test and focus on population level measures, without validating whether lateralization is consistent within individuals across time. We conducted a multispecies, international assessment of the repeatability (R) of lateralization in four previously studied fish species using a detour test (T-maze), a common method for testing lateralization. We also reanalysed a published data set on a fifth species using new statistical methods. We expected the three shoaling species to exhibit greater within-individual consistency in lateralization than their nonshoaling counterparts given previous reports of stronger lateralization in group-living fishes. Absolute and relative lateralization scores were highly nonrepeatable in all five species (0.01
Nyckelord
behavioural plasticity; laterality; lateralization; repeatability; T-maze
Publicerad i
Animal Behaviour
2020, volym: 167, sidor: 55-64
SLU författare
UKÄ forskningsämne
Etologi
Publikationens identifierare
- DOI: https://doi.org/10.1016/j.anbehav.2020.06.025
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/108869