Top 7 Biorxiv Papers Today in Ecology


2.001 Mikeys
#1. Suppression gene drive in continuous space can result in unstable persistence of both drive and wild-type alleles
Jackson Champer, Isabel Kim, Sam Champer, Andrew G. Clark, Philipp W. Messer
Rapid evolutionary processes can produce drastically different outcomes when studied in panmictic population models versus spatial models where the rate of evolution is limited by dispersal. One such process is gene drive, which allows 'selfish' genetic elements to quickly spread through a population. Engineered gene drive systems are being considered as a means for suppressing disease vector populations or invasive species. While laboratory experiments and modeling in panmictic populations have shown that such drives can rapidly eliminate a population, it is not yet clear how well these results translate to natural environments where individuals inhabit a continuous landscape. Using spatially explicit simulations, we show that instead of population elimination, release of a suppression drive can result in what we term 'chasing' dynamics. This describes a condition in which wild-type individuals quickly recolonize areas where the drive has locally eliminated the population. Despite the drive subsequently chasing the wild-type...
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Total Words: 15497
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2.0 Mikeys
#2. A cross-scale assessment of productivity-diversity relationships
Dylan Craven, Masha van der Sande, Carsten Meyer, Katharina Gerstner, Joanne M Bennett, Darren P Giling, Jes Hines, Helen R P Phillips, Felix May, Katherine Bannar-Martin, Jonathan Chase, Petr Keil
Biodiversity and ecosystem productivity vary across the globe and considerable effort has been made to describe their relationships. Biodiversity-ecosystem functioning research has traditionally focused on how experimentally controlled species richness affects net primary productivity (S→NPP) at small spatial grains. In contrast, the influence of productivity on richness (NPP→S) has been explored at many grains in naturally assembled communities. Mismatches in spatial scale between approaches have fostered debate about the strength and direction of biodiversity-productivity relationships. Here we examine the direction and strength of productivity's influence on diversity (NPP→S) and of diversity's influence on productivity (S→NPP), and how this varies across spatial grains using data from North American forests at grains from local (672 m2) to coarse spatial units (median area = 35,677 km2). We assess relationships using structural equation and Random Forest models, while accounting for variation in climate, environmental...
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DiogoProvete: RT @biorxiv_ecology: A cross-scale assessment of productivity-diversity relationships https://t.co/AG1vekiEsr #biorxiv_ecology
pedroasena: RT @biorxiv_ecology: A cross-scale assessment of productivity-diversity relationships https://t.co/AG1vekiEsr #biorxiv_ecology
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Authors: 12
Total Words: 10672
Unqiue Words: 3428

1.997 Mikeys
#3. When does a minor outbreak become a major epidemic? Linking the risk from invading pathogens to practical definitions of a major epidemic
Robin Thompson, Chris Gilligan, Nik Cunniffe
Forecasting whether or not initial reports of disease will be followed by a major epidemic is an important component of disease management. Most estimates of the probability of a major epidemic involve assuming that infections occur according to a branching process. Surprisingly, however, these calculations can be carried out without the factors that differentiate a major epidemic from a minor outbreak ever being defined precisely. We assess potential implications of this lack of explicitness by considering the differences between three practically relevant possible definitions of a major epidemic. Specifically, we consider a major epidemic as an outbreak in which: i) a large number of hosts are infected simultaneously; ii) a large number of infections occur in total; and iii) disease persists in the population for a long time. We calculate the probability of a major epidemic under each of these definitions, initially considering the commonly used stochastic Susceptible-Infected-Susceptible model as a tractable case study allowing...
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biorxivpreprint: When does a minor outbreak become a major epidemic? Linking the risk from invading pathogens to practical definitions of a major epidemic https://t.co/71lNKtPNYC #bioRxiv
biorxiv_ecology: When does a minor outbreak become a major epidemic? Linking the risk from invading pathogens to practical definitions of a major epidemic https://t.co/lLLCvsVT6Q #biorxiv_ecology
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1.997 Mikeys
#4. Parasite transmission in aquatic ecosystems under climate change: joint effects of temperature, host behavior and elimination of parasite larvae by predators.
Mikhail Gopko, Ekaterina Mironova, Anna F. Pasternak, Victor N. Mikheev, Jouni Taskinen
A moderate raise in temperature was suggested to enhance the impact of parasites on aquatic ecosystems. Under higher temperatures, poikilothermic animals (e.g. fish), increase their activity, which can result in a more frequent encounter with parasites. However, temperature increase may also trigger processes counteracting an increased risk of parasitic infections. For instance, removal of free-living stages of parasites by filter-feeding organisms can increase with temperature and potentially mitigate disease risk in ecosystems under climate change. In our study, we aimed to find out whether an increased infection transmission under higher temperatures can be, at least, partly compensated by the increased removal of parasitic larvae be aquatic predators. In addition, we planned to reveal the behavioral mechanism underlying the more successful transmission of the parasite at higher temperatures. We experimentally studied how temperature, the behavior of fish host (rainbow trout) and the presence of filter-feeding mussels in the...
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biorxivpreprint: Parasite transmission in aquatic ecosystems under climate change: joint effects of temperature, host behavior and elimination of parasite larvae by predators. https://t.co/m3djyU750p #bioRxiv
biorxiv_ecology: Parasite transmission in aquatic ecosystems under climate change: joint effects of temperature, host behavior and elimination of ... https://t.co/6BMLJ9lC1V #biorxiv_ecology
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1.997 Mikeys
#5. Mosquito species and age influence thermal performance of traits relevant to malaria transmission
Kerri L. Miazgowicz, Erin A Mordecai, Sadie J. Ryan, Richard J. Hall, Harry J. Owen, Temitayo Andanlawo, Kavya Balajii, Courtney Murdock
Models predicting disease transmission are a vital tool in the control of mosquito populations and malaria reduction as they can target intervention efforts. We compared the performance of temperature-dependent transmission models when mosquito life history traits were allowed to change across the lifespan of Anopheles stephensi , the urban malaria mosquito, to models parameterized with commonly derived estimates of lifetime trait values. We conducted an experiment on adult female Anopheles stephensi to generate daily per capita values for lifespan, egg production, and biting rate at six constant temperatures. Both temperature and age significantly affected trait values. Further, we found quantitative and qualitative differences between temperature-trait relationships estimated based on daily rates versus directly observed lifetime values. Incorporating these temperature-trait relationships into an expression governing transmission suitability, relative R(T), model resulted in minor differences in the breadth of suitable...
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biorxivpreprint: Mosquito species and age influence thermal performance of traits relevant to malaria transmission https://t.co/0bEa6MLxu0 #bioRxiv
biorxiv_ecology: Mosquito species and age influence thermal performance of traits relevant to malaria transmission https://t.co/j5UAvqJ0j3 #biorxiv_ecology
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Authors: 8
Total Words: 10154
Unqiue Words: 3284

1.997 Mikeys
#6. Genome and community-level interaction insights on wide carbon utilizing and element cycling function of Hydrothermarchaeota from hydrothermal sediment
Zhichao Zhou, Yang Liu, Wei Xu, Jie Pan, Zhu-Hua Luo, Meng Li
Hydrothermal vents release reduced compounds and small organic carbons into surrounding seawaters, providing essential substrates for microbial-derived biosynthesis and bioenergy transformations. Despite the wide distribution of Marine Benthic Group-E archaea (referred to as Hydrothermarchaeota) in hydrothermal environments, little is known on their genome blueprints and ecofunctions. Here, we studied four relatively high-completeness (> 80%) metagenome-assembled genomes (MAGs) from a black smoker chimney and surrounding sulfide sediments in the Mid-Atlantic Ridge of the South Atlantic Ocean (BSmoChi-MAR) as well as publicly available datasets. Comparative genomics suggest that Hydrothermarchaeota members have versatile carbon metabolism, including assimilating proteins, lactate and acetate, degrading aromatics anaerobically, oxidizing C1 compounds (CO, formate, and formaldehyde), utilizing methyl-compounds, and incorporating CO2 by tetrahydromethanopterin-based Wood–Ljungdahl (WL) pathway and Calvin–Benson–Bassham (CBB) cycle...
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biorxivpreprint: Genome and community-level interaction insights on wide carbon utilizing and element cycling function of Hydrothermarchaeota from hydrothermal sediment https://t.co/j56QchBlOk #bioRxiv
biorxiv_ecology: Genome and community-level interaction insights on wide carbon utilizing and element cycling function of Hydrothermarchaeota from ... https://t.co/Qy57wDTCYW #biorxiv_ecology
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Authors: 6
Total Words: 10084
Unqiue Words: 4070

1.996 Mikeys
#7. Intraspecific trait variability and community assembly in hawkmoths (Lepidoptera: Sphingidae) across an elevational gradient in the eastern Himalayas, India
Mansi Mungee, Ramana Athreya
Recent progress in functional ecology has advanced our understanding of the role of intraspecific (ITV) and interspecific (STV) trait variation in community assembly across environmental gradients. Studies on plant communities have generally found STV as the main driver of community trait variation, whereas ITV plays an important role in determining species co-existence and community assembly. However, similar studies of faunal taxa, especially invertebrates, are very few in number. We investigated variation of hawkmoth (Lepidoptera: Sphingidae) traits along an environmental gradient spanning 2600 m in the eastern Himalayas and its role in community assembly, using the morpho-functional traits of body mass (BM), wing loading (WL) and wing aspect ratio (AR). We employ the recently proposed T-statistics to test for non-random assembly of hawkmoth communities and the relative importance of the two opposing forces for trait divergence (internal filters) and convergence (external filters). Community-wide trait-overlap decreased for all...
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