Dispersal behavior correlates with personality of a North American fish

The process of dispersal is determined by the interaction of individual (intrinsic) traits and environmental (extrinsic) factors. Although many studies address and quantify dispersal, few evaluate both intrinsic and extrinsic factors jointly. We test the relative importance of intrinsic traits (expl...

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Main Author: Josh E. RASMUSSEN, Mark C. BELK
Format: Article
Language:English
Published: Oxford University Press 2012-02-01
Series:Current Zoology
Subjects:
Online Access:http://www.currentzoology.org/paperdetail.asp?id=12002
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author Josh E. RASMUSSEN, Mark C. BELK
author_facet Josh E. RASMUSSEN, Mark C. BELK
author_sort Josh E. RASMUSSEN, Mark C. BELK
collection DOAJ
description The process of dispersal is determined by the interaction of individual (intrinsic) traits and environmental (extrinsic) factors. Although many studies address and quantify dispersal, few evaluate both intrinsic and extrinsic factors jointly. We test the relative importance of intrinsic traits (exploration tendency and size) and extrinsic factors (population density and habitat quality) on dispersal of a medium-sized western United States minnow, southern leatherside chub Lepidomeda aliciae. A generalized linear model with a binomial response was used to determine the probability of individuals dispersing one year after tagging. Medium-sized individuals that were more prone to explore novel environments were 10.7 times more likely to be recaptured outside of their original capture area after a year (dispersal) compared to non-explorer individuals of the same size class. Differences between explorer classifications within the small and large size classes were negligible. Open habitat within 50 m upstream also increased the probability of dispersal relative to controls. Relative location within the study reach, and population density were not significantly related to dispersal probabilities of individuals. Our results indicate that understanding of personality may illuminate patterns of dispersal within and among populations [Current Zoology 58 (2): 260-270, 2012].
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spelling doaj.art-ca2ee94d32594022b85e247a5674fbe52022-12-22T00:55:15ZengOxford University PressCurrent Zoology1674-55072012-02-01582260270Dispersal behavior correlates with personality of a North American fishJosh E. RASMUSSEN, Mark C. BELKThe process of dispersal is determined by the interaction of individual (intrinsic) traits and environmental (extrinsic) factors. Although many studies address and quantify dispersal, few evaluate both intrinsic and extrinsic factors jointly. We test the relative importance of intrinsic traits (exploration tendency and size) and extrinsic factors (population density and habitat quality) on dispersal of a medium-sized western United States minnow, southern leatherside chub Lepidomeda aliciae. A generalized linear model with a binomial response was used to determine the probability of individuals dispersing one year after tagging. Medium-sized individuals that were more prone to explore novel environments were 10.7 times more likely to be recaptured outside of their original capture area after a year (dispersal) compared to non-explorer individuals of the same size class. Differences between explorer classifications within the small and large size classes were negligible. Open habitat within 50 m upstream also increased the probability of dispersal relative to controls. Relative location within the study reach, and population density were not significantly related to dispersal probabilities of individuals. Our results indicate that understanding of personality may illuminate patterns of dispersal within and among populations [Current Zoology 58 (2): 260-270, 2012].http://www.currentzoology.org/paperdetail.asp?id=12002TemperamentBehavioral phenotypeExplorationLepidomedaPersonality-dependent
spellingShingle Josh E. RASMUSSEN, Mark C. BELK
Dispersal behavior correlates with personality of a North American fish
Current Zoology
Temperament
Behavioral phenotype
Exploration
Lepidomeda
Personality-dependent
title Dispersal behavior correlates with personality of a North American fish
title_full Dispersal behavior correlates with personality of a North American fish
title_fullStr Dispersal behavior correlates with personality of a North American fish
title_full_unstemmed Dispersal behavior correlates with personality of a North American fish
title_short Dispersal behavior correlates with personality of a North American fish
title_sort dispersal behavior correlates with personality of a north american fish
topic Temperament
Behavioral phenotype
Exploration
Lepidomeda
Personality-dependent
url http://www.currentzoology.org/paperdetail.asp?id=12002
work_keys_str_mv AT josherasmussenmarkcbelk dispersalbehaviorcorrelateswithpersonalityofanorthamericanfish