To boldly go where no goby has gone before: boldness, dispersal tendency, and metabolism at the invasion front

Myles-Gonzalez, Emelia; Burness, Gary; Yavno, Stan; Rooke, Anna C.; Fox, Michael G.

doi:10.1093/beheco/arv050

Cited by 135 publications

(139 citation statements)

References 73 publications

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“…Resting MR has been previously found to be higher in individuals with greater movement propensity (Niitepõld et al 2009;Myles-Gonzalez et al 2015) and a recent study found that genes underlying metabolic processes are upregulated in dispersive cane toads (Rollins et al 2015). Given the potential involvement of genetic and epigenetic mechanisms, and potential metabolome differences between dispersive and non-dispersive individuals (Rollins et al 2015;Van Petegem et al 2015;2016b), it may be worth exploring the association between MR and movement in other systems.…”

Section: Discussionmentioning

confidence: 99%

“…A similar pattern emerges with resting metabolic rate (RMR). Dispersive round gobies (Neogobius melanostomus) have a higher RMR than residents (Myles-Gonzalez et al 2015). RMR represents the minimal energy required for an ectotherm to self-maintain (Speakman et al 2004), and will be higher when tissues require more energy to be maintained.…”

Section: Traits Associated With Dispersalmentioning

confidence: 99%

“…Many invasive species (including amphibians, birds, fish, and insects) have been found to exhibit certain traits that assist in their dispersal ability, and rapid phenotypic change occurs at expanding range edges (Llewelyn et al 2010;Berthouly-Salazar et al 2012;Laparie et al 2013;Myles-Gonzalez et al 2015;Davenport & Lowe 2016). As climate change and anthropogenic disturbance of natural systems continues, the importance of understanding biological invasions grows, therefore elucidating the impact of evolutionary processes in the spread and ecological impact of invasive species is a vital component of this understanding (Colautti & Lau 2015).…”

Section: Evolution Of Dispersalmentioning

confidence: 99%

“…Natural selection is the conventional mechanism for evolutionary change, whereby individuals that have traits better suited to their local environment will have a fitness advantage (Darwin 1859). Both of these evolutionary mechanisms are prevalent in shaping traits that are associated with accelerating range expansion in invasive species, including birds (Berthouly-Salazar et al 2012), toads (Shine et al 2011;Lindström et al 2013), fishes (Rehage & Sih 2004;Myles-Gonzalez et al 2015), salamanders (Lowe & McPeek 2012;Davenport & Lowe 2016), mites (Van Petegem et al 2015;2016a), and insects (Piiroinen et al 2011;Laparie et al 2013). Understanding trait evolution is a pre-condition for elucidating factors that contribute to shifts in the distributions of invasive species; such shifts have potentially dire consequences for the ecology of native species and the conservation of natural environments (Colautti & Lau 2015).…”

Section: Spatial Sorting and The Evolution Of Dispersal-related Traitsmentioning

confidence: 99%

“…Evidence for the evolution of dispersal ability and dispersalassociated traits at range edges has been demonstrated across diverse taxa (Chuang & Peterson 2016). Broadly, traits that may characterise dispersive individuals are a larger body size (Hill et al 1999;Gutowsky & Fox 2012;Kelehear et al 2012;Brown et al 2013;Laparie et al 2013), larger locomotor appendages relative to body size (Phillips et al 2006;Forsman et al 2010;Therry et al 2014b), a better body condition (Carol et al 2009;Lopez et al 2012;Rebrina et al 2015), boldness, aggressiveness, or low sociality (Fraser et al 2001;Duckworth 2006;Myles-Gonzalez et al 2015) compared with residents. Individuals that disperse have also been found to grow or mature faster (Bøhn et al 2004;Carol et al 2009;Phillips 2009), and exhibit a generally higher metabolic rate (MR) at rest (MylesGonzalez et al 2015) and during locomotion (Haag et al 2005;Niitepõld et al 2009).…”

Section: Introductionmentioning

confidence: 99%

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Selecting for invasive tendencies: the evolution of morphological, physiological, and movement behaviour traits associated with dispersal

Arnold¹

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Dispersal, defined as any movement of an individual over various spatial scales that may contribute to gene flow, is an essential component of species ecology. It provides a mechanism that allows organisms to track optimal environmental conditions, regulate population density and interactions with conspecifics, and colonise new areas. Dispersal ability varies widely among individuals, and this variation has been strongly linked to a suite of physiological, morphological, and behavioural traits that together constitute a dispersal syndrome. The evolution of dispersal-related traits can occur not only by natural selection, but also by spatial sorting, where individuals that have traits facilitating their dispersal accumulate at range edges and are limited proximally to mating with other dispersive individuals. The relationships among traits constituting the dispersal syndrome, their dynamics with age, and evolution under spatial selection on dispersal have not been comprehensively explored. Furthermore, integrating evolution into the study of dispersal is imperative to understand the mechanisms that select or constrain the evolution of dispersalrelated traits. The overall aim of this thesis was to investigate a suite of physiological, morphological, and movement behaviour traits associated with the dispersal syndrome using a model system: laboratory dispersal apparatuses and Tribolium castaneum (red flour beetle).The research presented in this thesis focused on the following traits: body size, locomotor apparatus size, metabolic rate, spontaneous activity, and movement behaviour in a maze (including speed, path length, displacement distance, and behavioural intermittence). The first specific aim was to determine how the onset of sexual maturity and age throughout early life affects dispersal-related traits (Chapter 2). I found that prior to sexual maturity, T. castaneum have low metabolic rate and moved significantly less than mature ones. The low energy expenditure was attributable to reduced energy demand and inactivity, which was hypothesised to be a protective mechanism while the cuticle is undergoing sclerotisation.The second specific aim was to determine the relationships among metabolic rate, body size, relative leg length and different movement behaviour traits (Chapter 3). A dominant axis of movement ability described variation in several movement traits and was positively related to relative leg length, but unrelated to body size or metabolic rate. A mechanistic relationship ii between stride length and movement ability is therefore likely. The data suggested that the dispersal syndrome may be more strongly tied to morphology rather than physiology.The third specific aim was to investigate the dispersal rate of T. castaneum through threepatch dispersal apparatuses to determine which design would be most effective for artificial selection on the basis of dispersal success (Chapter 4). The distance and slope of the tubing that connected between patches significantly affected dispersal rate, therefo...

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Section: Discussionmentioning

confidence: 99%

Section: Traits Associated With Dispersalmentioning

confidence: 99%

Section: Evolution Of Dispersalmentioning

confidence: 99%

Section: Spatial Sorting and The Evolution Of Dispersal-related Traitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selecting for invasive tendencies: the evolution of morphological, physiological, and movement behaviour traits associated with dispersal

Arnold¹

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Boldness suppresses hoarding behavior in food hoarding season and reduces over‐wintering survival in a social rodent

Gan,

Tian,

Wang

et al. 2024

Ecology and Evolution

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The “pace‐of‐life” syndrome (POLS) framework can encompass multiple personality axes that drive important functional behaviors (e.g., foraging behavior) and that co‐vary with multiple life history traits. Food hoarding is an adaptive behavior important for an animal's ability to adapt to seasonal fluctuations in food availability. However, the empirical evidence for the relationships between animal personality and hoarding behavior remains unclear, including its fitness consequences in the POLS framework. In this study, the Mongolian gerbil (Meriones unguiculatus), a social rodent, was used as a model system to investigate how boldness or shyness is associated with food hoarding strategies during the food hoarding season and their impact on over‐winter survival and reproduction at both individual and group levels. The results of this study showed that, compared with shy gerbils, bold gerbils had a lower effort foraging strategy during the food hoarding season and exhibited lower over‐winter survival rates. However, bold–shy personality differences had no effect on over‐winter reproduction. These findings suggest that the personality is a crucial factor influencing the foraging strategy during the food hoarding season in Mongolian gerbils. Personality may be related to energy states or the reaction to environmental changes (e.g., predation risk and food availability) in bold or shy social animals. These results reflect animal life history trade‐offs between current versus future reproduction and reproduction versus self‐maintenance, thereby helping Mongolian gerbils in adapting to seasonal fluctuations in their habitat.

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An approach to incorporate individual personality in modeling fish dispersal across in‐stream barriers

Hirsch

Thorlacius

Brodin

et al. 2016

Ecology and Evolution

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Animal personalities are an important factor that affects the dispersal of animals. In the context of aquatic species, dispersal modeling needs to consider that most freshwater ecosystems are highly fragmented by barriers reducing longitudinal connectivity. Previous research has incorporated such barriers into dispersal models under the neutral assumption that all migrating animals attempt to ascend at all times. Modeling dispersal of animals that do not perform trophic or reproductive migrations will be more realistic if it includes assumptions of which individuals attempt to overcome a barrier. We aimed to introduce personality into predictive modeling of whether a nonmigratory invasive freshwater fish (the round goby, Neogobius melanostomus) will disperse across an in‐stream barrier. To that end, we experimentally assayed the personalities of 259 individuals from invasion fronts and established round goby populations. Based on the population differences in boldness, asociability, and activity, we defined a priori thresholds with bolder, more asocial, and more active individuals having a higher likelihood of ascent. We then combined the personality thresholds with swimming speed data from the literature and in situ measurements of flow velocities in the barrier. The resulting binary logistic regression model revealed probabilities of crossing a barrier which depended not only on water flow and fish swimming speed but also on animal personalities. We conclude that risk assessment through predictive dispersal modeling across fragmented landscapes can be advanced by including personality traits as parameters. The inclusion of behavior into modeling the spread of invasive species can help to improve the accuracy of risk assessments.

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To boldly go where no goby has gone before: boldness, dispersal tendency, and metabolism at the invasion front

Cited by 135 publications

References 73 publications

Selecting for invasive tendencies: the evolution of morphological, physiological, and movement behaviour traits associated with dispersal

Selecting for invasive tendencies: the evolution of morphological, physiological, and movement behaviour traits associated with dispersal

Boldness suppresses hoarding behavior in food hoarding season and reduces over‐wintering survival in a social rodent

An approach to incorporate individual personality in modeling fish dispersal across in‐stream barriers

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