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Size specific boldness associated with differences in resource requirements and habitat use: a cross-sectional study in hermit crabs

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Current Zoology 2023年第3期69卷 360-366页

作者： Mark Briffa Rose Archer School of Biological and Marine Sciences University of PlymouthPlymouth PL48AAUK

Animal personality is often studied within compressed periods of observation that represent narrow windows in comparison to animal *** much is known about the relations between repeatable personality traits and cross-situational behavioral plasticity,less is known about how such traits might differ across age classes or life history *** conducted a cross-sectional study of startle response duration in 3 size classes of Pagurus bernhardus,the common European hermit *** defined size classes using transitions in the preferred species of gastropod shells that accompany growth,and this change in preference is in turn associated with a transition from intertidal to subtidal *** with small-and medium-sized intertidal individuals the larger subtidal hermit crabs behaved cautiously by showing startle responses of greater duration following *** responses were also repeatable within all 3 size classes,confirming the presence of animal personality in intertidal hermit crabs and demonstrating that this pattern is retained within the largest size classes,which have undergone the transition from intertidal to subtidal ***,there was a trend for the pattern of repeatable startle response durations to increase with size class,with the highest value for repeatability and the greatest range of startle response durations being present within the large subtidal *** greater range of startle responses indicates that the longer startle response durations in some larger individuals are more likely due to developmental changes with age and habitat use than reflecting selection against the boldest individuals during earlier stages of life.

关键词： boldness development habitat hermit crab personality resources

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