The effect of phenotypic traits and external cues on natal dispersal movements

Delgado, María del Mar; Penteriani, Vincenzo; Revilla, Eloy; Nams, Vilis O.

doi:10.1111/j.1365-2656.2009.01655.x

Cited by 106 publications

(118 citation statements)

References 48 publications

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“…This phenomenon may explain why males recruit at a younger age than female Bonelli’s eagles, as mortality rates are higher in males than in females in the studied population (Hernández‐Matías, Real, Pradel, Ravayrol, et al., 2011). As a consequence, there is an increase in vacant territories for males who can thus recruit at an earlier age (see also del Mar Delgado et al., 2010). …”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, effects related to the characteristics of individuals either during their development (i.e., body condition) or at the time of recruitment (i.e., sex and age) did show a detectable signal. As is expected in birds, females had greater NDD than males, (Greenwood & Harvey, 1982; del Mar Delgado et al., 2010; Muriel et al., 2016; Serrano et al., 2003; Soutullo et al., 2006), a finding that coincides with previous studies of this species (Hernández‐Matías et al., 2010). Nevertheless, determinants of NDD associated with individual characteristics appear to interact in a complex way.…”

Section: Discussionmentioning

confidence: 99%

“…In fact, if dispersal is fueled by stored energy, a disperser with large energy stores (good body condition) might be able to encounter, visit, and sample a larger number of potential habitats before running out of energy than a disperser with low energy resources (Hardouin et al., 2012; Stamps, 2006; Tilgar et al., 2010). This has been reported in ground squirrels Spermophilus beldingi (Holekamp & Sherman, 1989), eagle owls Bubo bubo (del Mar Delgado et al., 2010), greater flamingos Phoenicopterus ruber roseus (Barbraud et al., 2003), and Spanish Imperial eagles Aquila adalberti (Soutullo et al., 2013). As well, as explained above, our data supports the early‐breeding hypothesis that states that birds in good body condition will recruit at younger ages than those in poor body condition.…”

Section: Discussionmentioning

confidence: 99%

“…An individual’s internal state can provide information on the fitness potential of its environment, thereby affecting its decision to stay or leave its natal area (Clobert et al., 2012). In other words, the costs and benefits of natal dispersal are influenced by the internal state of individuals and by environmental conditions experienced both in the natal area and in future breeding sites (Acker et al., 2018; Bonte et al., 2012; Bowler & Benton, 2005; Clobert et al., 2009; del Mar Delgado, Penteriani, Revilla, & Nams, 2010; Rémy, Le Galliard, Gundersen, Steen, & Andreassen, 2011). Thus, both modeling and empirical studies indicate that natal dispersal behavior often represents a plastic‐, phenotype‐, and condition‐dependent strategy (Bonte et al., 2012; Clobert et al., 2012; Rémy et al., 2011).…”

Section: Introductionmentioning

confidence: 99%

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Effects of rearing conditions on natal dispersal processes in a long‐lived predator bird

Azpillaga

Real

Hernández‐Matías

2018

Ecology and Evolution

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Natal or prebreeding dispersal is a key driver of the functioning, dynamics, and evolution of populations. Conditions experienced by individuals during development, that is, rearing conditions, may have serious consequences for the multiple components that shape natal dispersal processes. Rearing conditions vary as a result of differences in parental and environmental quality, and it has been shown that favorable rearing conditions are beneficial for individuals throughout their lives. However, the long‐term consequences of rearing conditions on natal dispersal are still not fully understood in long‐lived birds. In this study, we aim to test the following hypotheses to address the relationship between rearing conditions and certain components of the natal dispersal process in Bonelli’s eagle (Aquila fasciata): (1) The body condition of nestlings depends on the quality of the territory and/or breeders; and (2) the survival until recruitment, (3) the age of recruitment, and (4) the natal dispersal distance (NDD) all depend on rearing conditions. As expected, nestlings reared in territories with high past productivity of chicks had better body condition, which indicates that both body condition and past productivity reflect the rearing conditions under which chicks are raised. In addition, chicks raised in territories with high past productivity and with good body condition had greater chances of surviving until recruitment. Furthermore, birds that have better condition recruit earlier, and males recruit at a younger age than females. At last, although females in good body condition exhibited higher NDD when they recruited at younger ages, this pattern was not observed in either older females or males. Overall, this study provides evidence that rearing conditions have important long‐term consequences in long‐lived birds. On the basis of our results, we advocate that conservation managers work actively in the promotion of actions aimed at improving the rearing conditions under which individuals develop in threatened populations.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of rearing conditions on natal dispersal processes in a long‐lived predator bird

Azpillaga

Real

Hernández‐Matías

2018

Ecology and Evolution

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“…The body condition (body mass relative to body size) of an individual can affect their ability to disperse and be competitive. Individuals with high body condition may more easily abide the costs of dispersal, and thus disperse earlier or farther than lower condition individuals (Bonte 2009;Delgado et al 2010).…”

Section: Traits Associated With Dispersalmentioning

confidence: 99%

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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Determinants of departure to natal dispersal across an elevational gradient in a long‐lived raptor species

Scherler

Witczak

Aebischer³

et al. 2023

Ecology and Evolution

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Attributes of natal habitat often affect early stages of natal dispersal. Thus, environmental gradients at mountain slopes are expected to result in gradients of dispersal behavior and to drive elevational differences in dispersal distances and settlement behavior. However, covariation of environmental factors across elevational gradients complicates the identification of mechanisms underlying the elevational patterns in dispersal behavior. Assuming a decreasing food availability with elevation, we conducted a food supplementation experiment of red kite (Milvus milvus) broods across an elevational gradient toward the upper range margin and we GPS-tagged nestlings to assess their start of dispersal. While considering timing of breeding and breeding density across elevation, this allowed disentangling effects of elevational food gradients from co-varying environmental gradients on the age at departure from the natal home range. We found an effect of food supplementation on age at departure, but no elevational gradient in the effect of food supplementation. Similarly, we found an effect of breeding density on departure age without an underlying elevational gradient. Supplementary-fed juveniles and females in high breeding densities departed at younger age than control juveniles and males in low breeding densities. We only found an elevational gradient in the timing of breeding. Late hatched juveniles, and thus individuals at high elevation, departed at earlier age compared to early hatched juveniles. We conclude that favorable natal food conditions, allow for a young departure age of juvenile red kites. We show that the elevational delay in breeding is compensated by premature departure resulting in an elevational gradient in departure age. Thus, elevational differences in dispersal behaviour likely arise due to climatic factors affecting timing of breeding. However, the results also suggest that spatial differences in food availability and breeding density affect dispersal behavior and that their large-scale gradients within the distributional range might result in differential natal dispersal patterns.

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The effect of phenotypic traits and external cues on natal dispersal movements

Cited by 106 publications

References 48 publications

Effects of rearing conditions on natal dispersal processes in a long‐lived predator bird

Effects of rearing conditions on natal dispersal processes in a long‐lived predator bird

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

Determinants of departure to natal dispersal across an elevational gradient in a long‐lived raptor species

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