Differences in resource acquisition, not allocation, mediate the relationship between behaviour and fitness: a systematic review and meta‐analysis

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2021, Номер 97(2), С. 708 - 731

Опубликована: Дек. 2, 2021

Within populations, individuals often show repeatable variation in behaviour, called 'animal personality'. In the last few decades, numerous empirical studies have attempted to elucidate mechanisms maintaining this variation, such as life-history trade-offs. Theory predicts that among-individual behavioural traits could be maintained if are positively associated with reproduction simultaneously decreased survival, different levels of expression lead same net fitness outcome. However, resource acquisition may also important mediating relationship between individual behaviour and components (survival reproduction). For example, certain phenotypes (e.g. dominance or aggressiveness) higher acquisition, those both relative others population. When differ their ability acquire resources, trade-offs only expected observed at within-individual level (i.e. for a given amount resource, an increases its allocation reproduction, it comes cost vice versa), while among increased survival reproduction. We performed systematic review meta-analysis, asking: (i) do differences reflect and/or allocation, (ii) is affected by type testing environment? Our meta-analysis consisted 759 estimates from 193 studies. revealed positive correlation pairs using proxies. That is, study, behaviours were suggesting largely reflects acquisition. Furthermore, we found proxies phenotypic level. This significant because demonstrated these correlations primarily correlations. Thus, even when accounting did not find evidence Overall, was statistically zero among-individual, phenotypic, levels; category nor condition. highlights more driving than previously thought, including suggest come about via heterogeneity availability age-related effects, age leading state-dependent shifts increase emphasize future examining populations should test link - within individuals. Such work will allow field animal personality develop specific predictions regarding effect on consequences behaviour.

Язык: Английский

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Fluctuating selection maintains distinct species phenotypes in an ecological community in the wild

Proceedings of the National Academy of Sciences, Год журнала: 2023, Номер 120(42)

Опубликована: Окт. 9, 2023

Species’ phenotypic characteristics often remain unchanged over long stretches of geological time. Stabilizing selection—in which fitness is highest for intermediate phenotypes and lowest the extremes—has been widely invoked as responsible this pattern. At community level, such stabilizing selection acting individually on co-occurring species expected to produce a rugged landscape different occupy distinct peaks. However, even with an explosion microevolutionary field studies past four decades, evidence persistent driving long-term stasis lacking. Nonetheless, biologists continue invoke major factor explaining macroevolutionary patterns. Here, by directly measuring natural in wild, we identified complex community-wide surface Anolis lizard each peak close their mean phenotype. The presence local optima within species, valleys between presents barrier adaptive evolutionary change acts maintain differences through instead continuously operating selection, found that were maintained these peaks combination many independent periods among fluctuated form, strength, direction, or existence rarely occurred. Our results suggest lack substantial time may be result but not classically envisioned.

Язык: Английский

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Personality‐driven life history trade‐offs differ in two subpopulations of free‐ranging predators

Journal of Animal Ecology, Год журнала: 2020, Номер 90(1), С. 260 - 272

Опубликована: Июль 27, 2020

Consistent individual differences in behaviour (i.e. personality) can be explained an evolutionary context if they are favoured by life history trade-offs as conceptualized the pace-of-life syndrome (POLS) hypothesis. Theory predicts that faster-growing individuals suffer higher mortality and this trade-off is mediated through exploration/risk-taking personality, but empirical support for remains limited ambiguous. Equivocal to POLS hypothesis suggests link between personality may only emerge under certain circumstances. Understanding personality-driven would facilitated long-term studies wild populations experiencing different ecological conditions. Here, we tested whether measured semi-captivity was associated with a growth-mortality via risk-taking two subpopulations of juvenile lemon sharks Negaprion brevirostris known differ their predator abundance. We expected stronger predator-rich environment compared predator-poor environment. Sharks were captured yearly from 1995 onwards allowing us obtain data on growth apparent survival each subpopulation. then used novel open-field assay test exploration 2012 2017. A subset monitored field using telemetry document behaviours. (a) fast explorers captivity took more risks grew faster (b) natural selection acted against explorative, sharks. In subpopulation fewer predators, explorative faster. turn, larger, fast-growing had lower survival. subpopulation, despite finding growth, found no trade-off. Our study demonstrates association some contexts not others. identify resource abundance main potential drivers personality-mediated emphasize future work benefit approach integrating across

Язык: Английский

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Chromosome-scale genome assembly of the brown anole (Anolis sagrei), an emerging model species

Communications Biology, Год журнала: 2022, Номер 5(1)

Опубликована: Окт. 25, 2022

Rapid technological improvements are democratizing access to high quality, chromosome-scale genome assemblies. No longer the domain of only most highly studied model organisms, now non-traditional and emerging species can be genome-enabled using a combination sequencing technologies assembly software. Consequently, old ideas built on sparse sampling across tree life have recently been amended in face genomic data drawn from growing number high-quality reference genomes. Arguably valuable those long-studied for which much is already known about their biology; what many term species. Here, we report complete brown anole, Anolis sagrei - lizard widely variety disciplines was long overdue. This exceeds vast majority existing reptile snake genomes contiguity (N50 = 253.6 Mb) annotation completeness. Through analysis this population resequence data, examine history repetitive element accumulation, identify X chromosome, propose hypothesis evolutionary fusions between autosomes that led sex chromosomes A. sagrei.

Язык: Английский

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Biological invasions as a selective filter driving behavioral divergence

Nature Communications, Год журнала: 2022, Номер 13(1)

Опубликована: Окт. 11, 2022

Abstract Biological invasions are a multi-stage process (i.e., transport, introduction, establishment, spread), with each stage potentially acting as selective filter on traits associated invasion success. Behavior (e.g., exploration, activity, boldness) plays key role in facilitating species introductions, but whether acts such is not well known. Here we capitalize the well-characterized introduction of an invasive lizard ( Lampropholis delicata ) across three independent lineages throughout Pacific, and show that shifted behavioral trait means reduced among-individual variation—two predictions hypothesis. Moreover, lizards from all ranges were also more behaviorally plastic greater within-individual variation) than their native range counterparts. We provide support for importance filtering widespread invasion. Given leading driver global biodiversity loss, understanding how selects specific behaviors critical improving effects alien invaded communities.

Язык: Английский

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Brains, Behaviour, and Cognition: Multiple Misconceptions

Springer eBooks, Год журнала: 2023, Номер unknown, С. 211 - 238

Опубликована: Янв. 1, 2023

Язык: Английский

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Selection at behavioural, developmental and metabolic genes is associated with the northward expansion of a successful tropical colonizer

Molecular Ecology, Год журнала: 2019, Номер 28(15), С. 3523 - 3543

Опубликована: Июнь 25, 2019

Abstract What makes a species able to colonize novel environments? This question is key understand the dynamics of adaptive radiations and ecological niche shifts, but mechanisms that underlie expansion into habitats remain poorly understood at genomic scale. Lizards from genus Anolis are typically tropical, green anole ( carolinensis ) constitutes an exception since it expanded temperate North America subtropical Florida. Thus, we used as model investigate signatures selection associated with colonization new environment, namely America. To this end, analysed 29 whole‐genome sequences, covering entire native range species. We combination recent methods quantify both positive balancing in northern populations, including F ST outlier methods, machine learning ancestral recombination graphs. naively scanned for genes interest assessed overlap between multiple tests. Strikingly, identified many involved behaviour, suggesting successful environments may have been linked behavioural shifts well physiological adaptation. Using candidate strategy, determined response cold or behaviour displayed more frequently signals selection, while controlling local rate, gene clustering length. In addition, found immune all investigated genetic groups, also neuronal anatomical development.

Язык: Английский

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Future Directions in Sea Otter Research and Management

Frontiers in Marine Science, Год журнала: 2019, Номер 5

Опубликована: Янв. 21, 2019

The conservation and management of sea otters has benefited from a dedicated research effort over the past 60 years enabling this species to recover few thousand in early 20th century about 150,000 today. Continued allow full, pre-exploitation recovery restoration nearshore ecosystems should focus on at least seven key challenges: 1) Defining otter populations smaller spatial scales that reflect species' life history dispersal patterns; 2) Understanding factors regulate population density with index sites are representative variety littoral habitats occupied by around North Pacific Rim; 3) Quantifying effects community how food availability limits ecosystem predicting effect reoccupation commercially valuable invertebrates; 4) Making monitoring programs comparable across geo-political boundaries through international collaboration optimize survey efforts both spatially temporally determine cause changes demographics; 5) Evaluating benefits reintroductions into historical habitat; 6) Assessing socioeconomic costs range expansion anticipate mitigate conflicts; 7) Recognizing plans can be significantly affected higher level predators some circumstances. Many these challenges will require new tools including next generation geolocation tag technology assessments long-range movements, gene flow various populations.

Язык: Английский

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Changes in selection pressure can facilitate hybridization during biological invasion in a Cuban lizard

Proceedings of the National Academy of Sciences, Год журнала: 2021, Номер 118(42)

Опубликована: Окт. 15, 2021

Significance Hybridization is common in invasive species and can be important for their success. The connection between hybridization bioinvasions could result part because of a disruption the selection pressures that limit native range. We demonstrate that, lizard Anolis sagrei , rare populations, which show frequent evidence natural at large-effect X chromosome locus. Conversely, little this locus was detected do not experience large-scale contemporary gene flow, but instead maintain mosaic hybrid ancestries formed during range colonization. Ecological changes biological invasions affect frequency stability, turn drive success taxa.

Язык: Английский

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How to behave when marooned: the behavioural component of the island syndrome remains underexplored

Biology Letters, Год журнала: 2022, Номер 18(4)

Опубликована: Апрель 1, 2022

Animals on islands typically depart from their mainland relatives in assorted aspects of biology. Because they seem to occur concert, and some extent evolve convergently disparate taxa, these changes are referred as the ‘island syndrome’. While morphological, physiological life-history components island syndrome have received considerable attention, much less is known about how insularity affects behaviour. In this paper, we argue why personality traits cognitive abilities can be expected form part syndrome. We provide an overview studies that compared between populations, or among islands. Overall, pickings remarkably slim. There evidence animals tend bolder than mainland, but effects other go either way. The for style highly circumstantial very mixed. Finally, consider ecological drivers may induce such changes, mechanisms through which might occur. conclude our knowledge behavioural responses environments remains limited, encourage biologists make more use ‘natural laboratories evolution’.

Язык: Английский

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