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Data from: Isolation rearing does not constrain social plasticity in a family-living lizard

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posted on 2022-06-10, 03:08 authored by Julia L. Riley, Côme Guidou, Caroline Fryns, Johann Mourier, Stephan T. Leu, Daniel W.A. Noble, Richard W. Byrne, Martin J. Whiting, Daniel W A Noble
An animal’s social environment can be both dynamic and complex. Thus, social species often garner fitness benefits through being plastic in their social behavior. Yet, social plasticity can be constrained by an individual’s experience. We examined the influence of early social environment on social behavior in the tree skink (Egernia striolata), a family-living lizard. In the first phase of this study, we reared juveniles in two different social environments for 1.5 years: either in isolation or in unrelated pairs. We quantified each lizard’s sociability at four-month intervals using a standardized laboratory assay, and found that isolated lizards were more sociable, spending the assay closer to an adult female, than socially-reared lizards. In the second phase of this study (at the end of 1.5 years), we released all lizards into a semi-natural environment, observed their associations, and used social network analysis to quantify social behavior. During the initial six weeks post-release, we detected no differences in social behavior between rearing treatments. However, during the following six months differences emerged. Isolated lizards were more homogeneous in the strength of their associations than socially-reared lizards. Also, at first, isolated lizards associated more strongly than socially-reared lizards. Over time, isolated lizard associations became weaker and involved fewer lizards. In contrast, the level and number of associations of socially-reared lizards were stable over time. Our findings suggest that early experience influences tree skink social behavior but does not constrain social plasticity: isolation rearing did not limit their ability to respond to a novel social environment.

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Data files (5) for Tree Skink social behaviour & attributesPlease note this data, as well as the accompanying R code, can also be found within a public Bitbucket (git) repository at this link: https://julia_riley@bitbucket.org/julia_riley/e.-striolata-social-behavior-study.git The following files are provided in the compressed folder: 1. Group Data_long.csv - contains data on social association over our six month observations, 2. Group Data_short.csv - contains data on social association over our six week observations, 3. Lizard_Attributes_long.csv - contains lizard attribute data for the six month observations (N = 27 lizards), 4. Lizard_Attributes_short.csv - contains lizard attribute data for the six week observations (N = 28 lizards), & 5. personality_data_NArm.csv - contains laboratory sociability data for analyses.social interaction data.zip

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