Individual movement rates are sufficient to determine and maintain dynamic spatial positioning within Uca pugilator herds

Knotts, Eilea R.; Griffen, Blaine D.

doi:10.1007/s00265-016-2086-2

Cited by 9 publications

(5 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Foraging site selection was affected by multiple measures of personality, in line with studies investigating how patterns of space use and spatial distribution are mediated by personality (Boyer et al, 2010;Knotts & Griffen, 2016;Leclerc et al, 2016;Spiegel et al, 2015). Timidity, measured from an emergence test, and docility both predicted a higher probability of foraging at covered sites, which parallels previous findings that more timid individuals select for more cover (Carrete & Tella, 2010;Holtmann et al, 2017).…”

Section: Effects Of Personality On Seed Decisionssupporting

confidence: 83%

Predation risk and personality influence seed predation and dispersal by a scatter‐hoarding small mammal

2023

View full text Add to dashboard Cite

Small mammals are key scatter hoarders in forest ecosystems, acting as both seed predators and dispersers. The outcome of their interactions (i.e., predation vs. dispersal) is determined by a series of decisions made by small mammals, such as the choice of seed, whether the seed is immediately consumed or cached, and where it is cached. These decisions are influenced by a variety of factors, including the intrinsic traits of the seed, the individual personality of the scatter hoarder, and the perceived risk of predation while foraging. Furthermore, these factors may all interact to dictate the fate of the seed, with consequences for forest regeneration. Nevertheless, the ways in which perceived predation risk and personality interact to affect the seed dispersal decisions of scatter hoarders are still poorly understood. To contribute in filling this knowledge gap, we tested the hypotheses that southern red‐backed voles (Myodes gapperi), an important scatter hoarder in forest ecosystems, would exhibit personality‐mediated foraging and that predation risk would alter associations between personality and seed dispersal. We conducted a large‐scale field experiment, offering seed trays at stations with altered risk levels and recorded foraging decisions of free‐ranging voles with known personalities. We found that personality and perceived predation risk influenced decisions made by foraging voles. Specifically, docility, and boldness predicted foraging site selection, boldness predicted seed species selection and the number of seeds individuals selected, and the tendency to explore of an individual predicted whether voles would remove or consume seeds. Predation risk, mediated by the amount of cover at a site and by moon illumination, affected which foraging site individuals chose, seed species selection, and the probability of removal versus consumption. We did not find support for an interaction between personality and predation risk in predicting foraging decisions. These findings highlight the importance of scatter hoarder personality and perceived predation risk in affecting foraging decisions, with important consequences for seed dispersal and implications for altered patterns of forest regeneration in areas with different small mammal personality distributions or landscapes of fear.

show abstract

Section: Effects Of Personality On Seed Decisionssupporting

confidence: 83%

Predation risk and personality influence seed predation and dispersal by a scatter‐hoarding small mammal

2023

View full text Add to dashboard Cite

show abstract

“…Furthermore, the increased propensity of crabs to disperse on low‐quality reefs corroborate dispersal models incorporating habitat quality (Taylor & Norris, ), and our study shows that the addition of personality can help explain instances of partial dispersal within populations. Comparable relationships between boldness and dispersal have also been seen in fish (Cote et al., ; Fraser, Gilliam, Daley, Le & Skalski, ), birds (Dingemanse et al., ), lizards (Cote & Clobert, ), and other crab species (Knotts & Griffen, ), but none studied the simultaneous effects of habitat quality or mortality. Interestingly, even though the dispersal behavior of bold crabs caused low‐quality reefs to have greater proportions of shy crabs than high‐quality reefs, increased predation pressure of bold crabs on high‐quality reefs can serve to dampen differences in personality distribution between reefs.…”

Section: Discussionmentioning

confidence: 95%

“…Furthermore, the increased propensity of crabs to disperse on low-quality reefs corroborate dispersal models incorporating habitat quality (Taylor & Norris, 2007), and our study shows that the addition of personality can help explain instances of partial dispersal within populations. Comparable relationships between boldness and dispersal have also been seen in fish (Cote et al, 2011;Fraser, Gilliam, Daley, Le & Skalski, 2001), birds (Dingemanse et al, 2003), lizards (Cote & Clobert, 2007), and other crab species (Knotts & Griffen, 2016) reefs . Such considerations toward personality distributions are important because the personality composition of populations has been found to control population mating success (Sih & Watters, 2005), offspring dispersal (Cote et al, 2011), and disease transmission (Keiser, Howell, Pinter-Wollman & Pruitt, 2016).…”

Section: Effects Of Personality and Reef Quality On Dispersalmentioning

confidence: 88%

Personality interacts with habitat quality to govern individual mortality and dispersal patterns

Belgrad

Griffen

2018

Ecology and Evolution

Self Cite

View full text Add to dashboard Cite

Individual phenotypic differences are increasingly recognized as key drivers of ecological processes. However, studies examining the relative importance of these differences in comparison with environmental factors or how individual phenotype interacts across different environmental contexts remain lacking. We performed two field experiments to assess the concurrent roles of personality differences and habitat quality in mediating individual mortality and dispersal. We quantified the predator avoidance response of mud crabs, Panopeus herbstii, collected from low‐ and high‐quality oyster reefs and measured crab loss in a caging experiment. We simultaneously measured the distance crabs traveled as well as the stability of personalities across reef quality in a separate reciprocal transplant experiment. Habitat quality was the primary determinant of crab loss, although the distance crabs traveled was governed by personality which interacted with habitat quality to control the fate of crabs. Here, crabs on low‐quality reefs rapidly emigrated, starting with the boldest individuals, and experienced modest levels of predation regardless of personality. In contrast, both bold and shy crabs would remain on high‐quality reefs for months where bolder individuals experienced higher predation risk. These findings suggest that personalities could produce vastly different population dynamics across habitat quality and govern community responses to habitat degradation.

show abstract

“…These personality differences can also influence group situations. For instance, highly active individuals that are consistently more mobile are more likely to be situated on the edge of a herd, with less active individuals in the centre [29]. In some group foraging settings, the composition of bold and shy individuals influences where the group decides to forage, therefore affecting the distribution of the entire group [30].…”

Section: Introductionmentioning

confidence: 99%

The effects of animal personality on the ideal free distribution

DiNuzzo

Griffen

2020

Proc. R. Soc. B.

Self Cite

View full text Add to dashboard Cite

The ideal free distribution (IFD) has been used to predict the distribution of foraging animals in a wide variety of systems. However, its predictions do not always match observed distributions of foraging animals. Instead, we often observe that there are more consumers than predicted in low-quality patches and fewer consumers than predicted in high-quality patches (i.e. undermatching). We examine the possibility that animal personality is one explanation for this undermatching. We first conducted a literature search to determine how commonly studies document the personality distribution of populations. Second, we created a simple individual-based model to conceptually demonstrate why knowing the distribution of personalities is important for studies of populations of foragers in context of the IFD. Third, we present a specific example where we calculate the added time to reach the IFD for a population of mud crabs that has a considerable number of individuals with relatively inactive personalities. We suggest that animal personality, particularly the prevalence of inactive personality types, may inhibit the ability of a population to track changes in habitat quality, therefore leading to undermatching of the IFD. This may weaken the IFD as a predictive model moving forward.

show abstract

Individual movement rates are sufficient to determine and maintain dynamic spatial positioning within Uca pugilator herds

Cited by 9 publications

References 64 publications

Predation risk and personality influence seed predation and dispersal by a scatter‐hoarding small mammal

Predation risk and personality influence seed predation and dispersal by a scatter‐hoarding small mammal

Personality interacts with habitat quality to govern individual mortality and dispersal patterns

The effects of animal personality on the ideal free distribution

Contact Info

Product

Resources

About