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Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences

https://read.qxmd.com/read/38913067/negative-density-dependence-characterizes-mutualistic-interactions-between-birds-and-fruiting-plants-across-latitudes
#1
JOURNAL ARTICLE
Tomás A Carlo, João Vitor S Messeder, Wálter D Espíndola, Benjamin S Vizzachero, Brady W Boyer, Jacqueline Hernández-Mejía, E Adrián Torres-Páucar, Antonio Fontanella, Marco A Pizo, Guillermo Amico, Letty Salinas, César Arana, Teresa Morán-López, Juan M Morales
Negative density dependence (NDD) in biotic interactions of interference such as plant-plant competition, granivory and herbivory are well-documented mechanisms that promote species' coexistence in diverse plant communities worldwide. Here, we investigated the generality of a novel type of NDD mechanism that operates through the mutualistic interactions of frugivory and seed dispersal among fruit-eating birds and plants. By sampling community-wide frugivory interactions at high spatial and temporal resolution in Pennsylvania, Puerto Rico, Peru, Brazil and Argentina, we evaluated whether interaction frequencies between birds and fruit resources occurred more often (selection), as expected, or below expectations (under-utilization) set by the relative fruit abundance of the fruit resources of each plant species...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913066/coinfection-accelerates-transmission-to-new-hosts-despite-no-effects-on-virulence-and-parasite-growth
#2
JOURNAL ARTICLE
Diogo P Godinho, Leonor R Rodrigues, Sophie Lefèvre, Sara Magalhães, Alison B Duncan
One of the fundamental aims of ecological, epidemiological and evolutionary studies of host-parasite interactions is to unravel which factors affect parasite virulence. Theory predicts that virulence and transmission are correlated by a trade-off, as too much virulence is expected to hamper transmission owing to excessive host damage. Coinfections may affect each of these traits and/or their correlation. Here, we used inbred lines of the spider mite Tetranychus urticae to test how coinfection with T. evansi impacted virulence-transmission relationships at different conspecific densities...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913065/species-interactions-affect-dispersal-a-meta-analysis
#3
JOURNAL ARTICLE
Elvire Bestion, Delphine Legrand, Celina B Baines, Dries Bonte, Aurelie Coulon, Maxime Dahirel, María Delgado, Jhelam N Deshpande, Alison B Duncan, Emanuel A Fronhofer, Isabelle Gounand, Staffan Jacob, Oliver Kaltz, François Massol, Erik Mathyssen, Thomas Parmentier, Camille Saade, Nicolas Schtickzelle, Giacomo Zilio, Julien Cote
Context-dependent dispersal allows organisms to seek and settle in habitats improving their fitness. Despite the importance of species interactions in determining fitness, a quantitative synthesis of how they affect dispersal is lacking. We present a meta-analysis asking (i) whether the interaction experienced and/or perceived by a focal species (detrimental interaction with predators, competitors, parasites or beneficial interaction with resources, hosts, mutualists) affects its dispersal; and (ii) how the species' ecological and biological background affects the direction and strength of this interaction-dependent dispersal...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913064/landscape-configuration-can-flip-species-area-relationships-in-dynamic-meta-food-webs
#4
JOURNAL ARTICLE
Remo Ryser, Jonathan M Chase, Benoit Gauzens, Johanna Häussler, Myriam R Hirt, Benjamin Rosenbaum, Ulrich Brose
Spatial and trophic processes profoundly influence biodiversity, yet ecological theories often treat them independently. The theory of island biogeography and related theories on metacommunities predict higher species richness with increasing area across islands or habitat patches. In contrast, food-web theory explores the effects of traits and network structure on coexistence within local communities. Exploring the mechanisms by which landscape configurations interact with food-web dynamics in shaping metacommunities is important for our understanding of biodiversity...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913063/dispersal-evolution-alters-evolution-mediated-priority-effects-in-a-metacommunity
#5
JOURNAL ARTICLE
Maxime Fajgenblat, Luc De Meester, Mark C Urban
Biologists have long sought to predict the distribution of species across landscapes to understand biodiversity patterns and dynamics. These efforts usually integrate ecological niche and dispersal dynamics, but evolution can also mediate these ecological dynamics. Species that disperse well and arrive early might adapt to local conditions, which creates an evolution-mediated priority effect that alters biodiversity patterns. Yet, dispersal is also a trait that can evolve and affect evolution-mediated priority effects...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913062/dispersal-diversity-feedbacks-and-their-consequences-for-macroecological-patterns
#6
REVIEW
Adriana Alzate, Oskar Hagen
Dispersal is a key process in ecology and evolution. While the effects of dispersal on diversity are broadly acknowledged, our understanding of the influence of diversity on dispersal remains limited. This arises from the dynamic, context-dependent, nonlinear and ubiquitous nature of dispersal. Diversity outcomes, such as competition, mutualism, parasitism and trophic interactions can feed back on dispersal, thereby influencing biodiversity patterns at several spatio-temporal scales. Here, we shed light on the dispersal-diversity causal links by discussing how dispersal-diversity ecological and evolutionary feedbacks can impact macroecological patterns...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913061/evolutionary-ecology-of-dispersal-in-biodiverse-spatially-structured-systems-what-is-old-and-what-is-new
#7
REVIEW
Emanuel A Fronhofer, Dries Bonte, Elvire Bestion, Julien Cote, Jhelam N Deshpande, Alison B Duncan, Thomas Hovestadt, Oliver Kaltz, Sally A Keith, Hanna Kokko, Delphine Legrand, Sarthak P Malusare, Thomas Parmentier, Camille Saade, Nicolas Schtickzelle, Giacomo Zilio, François Massol
Dispersal is a well-recognized driver of ecological and evolutionary dynamics, and simultaneously an evolving trait. Dispersal evolution has traditionally been studied in single-species metapopulations so that it remains unclear how dispersal evolves in metacommunities and metafoodwebs, which are characterized by a multitude of species interactions. Since most natural systems are both species-rich and spatially structured, this knowledge gap should be bridged. Here, we discuss whether knowledge from dispersal evolutionary ecology established in single-species systems holds in metacommunities and metafoodwebs and we highlight generally valid and fundamental principles...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913060/parasite-prevalence-is-determined-by-infection-state-and-risk-dependent-dispersal-of-the-host
#8
JOURNAL ARTICLE
Celina B Baines, Allison K Shaw
The spread of parasites and the emergence of disease are currently threatening global biodiversity and human welfare. To address this threat, we need to better understand those factors that determine parasite persistence and prevalence. It is known that dispersal is central to the spatial dynamics of host-parasite systems. Yet past studies have typically assumed that dispersal is a species-level constant, despite a growing body of empirical evidence that dispersal varies with ecological context, including the risk of infection and aspects of host state such as infection status (parasite-dependent dispersal; PDD)...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913059/coevolutionary-hotspots-favour-dispersal-and-fuel-biodiversity-in-mutualistic-landscapes-under-environmental-changes
#9
JOURNAL ARTICLE
Leandro G Cosmo, Julia N Acquaviva, Paulo R Guimarães, Mathias M Pires
Mutualistic interactions are key to sustaining Earth's biodiversity. Yet, we are only beginning to understand how coevolution in mutualistic assemblages can shape the distribution and persistence of species across landscapes. Here, we combine the geographic mosaic theory of coevolution with metacommunity dynamics to understand how geographically structured selection can shape patterns of richness, dispersal, extinction and persistence of mutualistic species. In this model, species may experience strong or weak reciprocal selection imposed by mutualisms within each patch (i...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913058/the-biotic-and-abiotic-contexts-of-ecological-selection-mediate-the-dominance-of-distinct-dispersal-strategies-in-competitive-metacommunities
#10
JOURNAL ARTICLE
Gabriel Khattar, Paul Savary, Pedro R Peres-Neto
While the influence of dispersal on ecological selection is the subject of intense research, we still lack a thorough understanding of how ecological selection operates to favour distinct dispersal strategies in metacommunities. To address this issue, we developed a model framework in which species with distinct quantitative dispersal traits that govern the three stages of dispersal-departure, movement and settlement-compete under different ecological contexts. The model identified three primary dispersal strategies (referred to as nomadic, homebody and habitat-sorting) that consistently dominated metacommunities owing to the interplay of spatiotemporal environmental variation and different types of competitive interactions...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913057/cannibalism-facilitated-by-parasite-infection-induces-dispersal-in-a-semi-aquatic-insect
#11
JOURNAL ARTICLE
Nicole L Regimbal, Celina B Baines
Parasites are known to have direct effects on host dispersal ability and motivation. Yet, parasites have a variety of impacts on host populations, including shaping predation and cannibalism rates, and therefore may also have indirect effects on host dispersal; these indirect pathways have not been studied. We tested the hypothesis that parasites influence host dispersal through effects on cannibalism using backswimmers ( Notonecta undulata ) and Hydrachnidia freshwater mites. Mite parasitism impedes swimming in backswimmers, which we found increased their vulnerability to cannibalism...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913056/the-evolution-of-passive-dispersal-versus-habitat-selection-have-differing-emergent-consequences-in-metacommunities
#12
JOURNAL ARTICLE
Mark A McPeek, William J Resetarits, Robert D Holt
Dispersal among local communities is fundamental to the metacommunity concept but is only important to the metacommunity structure if dispersal causes distortions of species abundances away from what local ecological conditions favour. We know from much previous work that dispersal can cause such abundance distortions. However, almost all previous theoretical studies have only considered one species alone or two interacting species (e.g. competitors or predator and prey). Moreover, a systematic analysis is needed of whether different dispersal strategies (e...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913055/the-interplay-between-abiotic-and-biotic-factors-in-dispersal-decisions-in-metacommunities
#13
JOURNAL ARTICLE
Mélanie Thierry, Julien Cote, Elvire Bestion, Delphine Legrand, Jean Clobert, Staffan Jacob
Suitable conditions for species to survive and reproduce constitute their ecological niche, which is built by abiotic conditions and interactions with conspecifics and heterospecifics. Organisms should ideally assess and use information about all these environmental dimensions to adjust their dispersal decisions depending on their own internal conditions. Dispersal plasticity is often considered through its dependence on abiotic conditions or conspecific density and, to a lesser extent, with reference to the effects of interactions with heterospecifics, potentially leading to misinterpretation of dispersal drivers...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913054/species-interactions-and-eco-evolutionary-dynamics-of-dispersal-the-diversity-dependence-of-dispersal
#14
REVIEW
Dries Bonte, Sally Keith, Emanuel A Fronhofer
Dispersal plays a pivotal role in the eco-evolutionary dynamics of spatially structured populations, communities and ecosystems. As an individual-based trait, dispersal is subject to both plasticity and evolution. Its dependence on conditions and context is well understood within single-species metapopulations. However, species do not exist in isolation; they interact locally through various horizontal and vertical interactions. While the significance of species interactions is recognized for species coexistence and food web functioning, our understanding of their influence on regional dynamics, such as their impact on spatial dynamics in metacommunities and meta-food webs, remains limited...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913053/interspecific-dispersal-constraints-suppress-pattern-formation-in-metacommunities
#15
JOURNAL ARTICLE
Patrick Lawton, Ashkaan K Fahimipour, Kurt E Anderson
Decisions to disperse from a habitat stand out among organismal behaviours as pivotal drivers of ecosystem dynamics across scales. Encounters with other species are an important component of adaptive decision-making in dispersal, resulting in widespread behaviours like tracking resources or avoiding consumers in space. Despite this, metacommunity models often treat dispersal as a function of intraspecific density alone. We show, focusing initially on three-species network motifs, that interspecific dispersal rules generally drive a transition in metacommunities from homogeneous steady states to self-organized heterogeneous spatial patterns...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38913052/the-macro-eco-evolutionary-interplay-between-dispersal-competition-and-landscape-structure-in-generating-biodiversity
#16
JOURNAL ARTICLE
O Hagen, D S Viana, T Wiegand, J M Chase, R E Onstein
Theory links dispersal and diversity, predicting the highest diversity at intermediate dispersal levels. However, the modulation of this relationship by macro-eco-evolutionary mechanisms and competition within a landscape is still elusive. We examine the interplay between dispersal, competition and landscape structure in shaping biodiversity over 5 million years in a dynamic archipelago landscape. We model allopatric speciation, temperature niche, dispersal, competition, trait evolution and trade-offs between competitive and dispersal traits...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38853571/to-update-or-to-create-the-influence-of-novelty-and-prior-knowledge-on-memory-networks
#17
REVIEW
Melanie J Sekeres, Judith Schomaker, Lynn Nadel, Dorothy Tse
Schemas are foundational mental structures shaped by experience. They influence behaviour, guide the encoding of new memories and are shaped by associated information. The adaptability of memory schemas facilitates the integration of new information that aligns with existing knowledge structures. First, we discuss how novel information consistent with an existing schema can be swiftly assimilated when presented. This cognitive updating is facilitated by the interaction between the hippocampus and the prefrontal cortex...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38853570/synapses-tagged-memories-kept-synaptic-tagging-and-capture-hypothesis-in-brain-health-and-disease
#18
REVIEW
Mohammad Zaki Bin Ibrahim, Zijun Wang, Sreedharan Sajikumar
The synaptic tagging and capture (STC) hypothesis lays the framework on the synapse-specific mechanism of protein synthesis-dependent long-term plasticity upon synaptic induction. Activated synapses will display a transient tag that will capture plasticity-related products (PRPs). These two events, tag setting and PRP synthesis, can be teased apart and have been studied extensively-from their electrophysiological and pharmacological properties to the molecular events involved. Consequently, the hypothesis also permits interactions of synaptic populations that encode different memories within the same neuronal population-hence, it gives rise to the associativity of plasticity...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38853569/long-term-potentiation-50-years-on-past-present-and-future
#19
JOURNAL ARTICLE
W C Abraham, T V P Bliss, G L Collingridge, R G M Morris
We introduce and summarize reviews and research papers by speakers at a discussion meeting on 'Long-term potentiation: 50 years on' held at the Royal Society, London, on 20-21 November 2023. The meeting followed earlier discussion meetings marking the 30th and 40th anniversaries of the discovery of long-term potentiation. These new contributions give an overview of current research and controversies in a vibrant branch of neuroscience with important implications for our understanding of the neurobiological basis of many forms of learning and memory and a wide spectrum of neurological and cognitive disorders...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://read.qxmd.com/read/38853568/incremental-induction-of-nmdar-stp-and-nmdar-ltp-in-the-ca1-area-of-ventral-hippocampal-slices-relies-on-graded-activation-of-discrete-nmda-receptors
#20
REVIEW
Rachael Ingram, Rasa Volianskis, John Georgiou, David E Jane, Adina T Michael-Titus, Graham L Collingridge, Arturas Volianskis
N -methyl-d-aspartate receptor (NMDAR)-dependent short- and long-term types of potentiation (STP and LTP, respectively) are frequently studied in the CA1 area of dorsal hippocampal slices (DHS). Far less is known about the NMDAR dependence of STP and LTP in ventral hippocampal slices (VHS), where both types of potentiation are smaller in magnitude than in the DHS. Here, we first briefly review our knowledge about the NMDAR dependence of STP and LTP and some other forms of synaptic plasticity. We then show in new experiments that the decay of NMDAR-STP in VHS, similar to dorsal hippocampal NMDAR-STP, is not time- but activity-dependent...
July 29, 2024: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
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