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https://www.readbyqxmd.com/read/28644983/future-heat-waves-due-to-climate-change-threaten-the-survival-of-p-%C3%A2-oceanica-seedlings
#1
Laura Guerrero-Meseguer, Arnaldo Marín, Carlos Sanz-Lázaro
Extreme weather events are major drivers of ecological change, and their occurrence is likely to increase due to climate change. The transient increases in atmospheric temperatures are leading to a greater occurrence of heat waves, extreme events that can produce a substantial warming of water, especially in enclosed basins such as the Mediterranean Sea. Here, we tested the effects of current and predicted heat waves on the early stages of development of the seagrass Posidonia oceanica. Temperatures above 27 °C limited the growth of the plant by inhibiting its photosynthetic system...
June 20, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28644827/what-drives-cooperative-breeding
#2
Walter D Koenig
Cooperative breeding, in which more than a pair of conspecifics cooperate to raise young at a single nest or brood, is widespread among vertebrates but highly variable in its geographic distribution. Particularly vexing has been identifying the ecological correlates of this phenomenon, which has been suggested to be favored in populations inhabiting both relatively stable, productive environments and in populations living under highly variable and unpredictable conditions. Griesser et al. provide a novel approach to this problem, performing a phylogenetic analysis indicating that family living is an intermediate step between nonsocial and cooperative breeding birds...
June 23, 2017: PLoS Biology
https://www.readbyqxmd.com/read/28643622/lung-microbiota-and-its-impact-on-the-mucosal-immune-phenotype
#3
Benjamin G Wu, Leopoldo N Segal
The use of culture-independent techniques has allowed us to appreciate that the upper and lower respiratory tract contain a diverse community of microbes in health and disease. Research has only recently explored the effects of the microbiome on the host immune response. The exposure of the human body to the bacterial environment is an important factor for immunological development; thus, the interaction between the microbiome and its host is critical to understanding the pathogenesis of disease. In this article, we discuss the mechanisms that determine the composition of the airway microbiome and its effects on the host immune response...
June 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28642842/the-tick-microbiome-why-non-pathogenic-microorganisms-matter-in-tick-biology-and-pathogen-transmission
#4
REVIEW
Sarah I Bonnet, Florian Binetruy, Angelica M Hernández-Jarguín, Olivier Duron
Ticks are among the most important vectors of pathogens affecting humans and other animals worldwide. They do not only carry pathogens however, as a diverse group of commensal and symbiotic microorganisms are also present in ticks. Unlike pathogens, their biology and their effect on ticks remain largely unexplored, and are in fact often neglected. Nonetheless, they can confer multiple detrimental, neutral, or beneficial effects to their tick hosts, and can play various roles in fitness, nutritional adaptation, development, reproduction, defense against environmental stress, and immunity...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28642608/ocean-acidification-as-a-driver-of-community-simplification-via-the-collapse-of-higher-order-and-rise-of-lower-order-consumers
#5
S Vizzini, B Martínez-Crego, C Andolina, A Massa-Gallucci, S D Connell, M C Gambi
Increasing oceanic uptake of CO2 is predicted to drive ecological change as both a resource (i.e. CO2 enrichment on primary producers) and stressor (i.e. lower pH on consumers). We use the natural ecological complexity of a CO2 vent (i.e. a seagrass system) to assess the potential validity of conceptual models developed from laboratory and mesocosm research. Our observations suggest that the stressor-effect of CO2 enrichment combined with its resource-effect drives simplified food web structure of lower trophic diversity and shorter length...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28638807/translational-rodent-models-for-research-on-parasitic-protozoa-a-review-of-confounders-and-possibilities
#6
REVIEW
Totta Ehret, Francesca Torelli, Christian Klotz, Amy B Pedersen, Frank Seeber
Rodents, in particular Mus musculus, have a long and invaluable history as models for human diseases in biomedical research, although their translational value has been challenged in a number of cases. We provide some examples in which rodents have been suboptimal as models for human biology and discuss confounders which influence experiments and may explain some of the misleading results. Infections of rodents with protozoan parasites are no exception in requiring close consideration upon model choice. We focus on the significant differences between inbred, outbred and wild animals, and the importance of factors such as microbiota, which are gaining attention as crucial variables in infection experiments...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28637860/higher-order-neural-processing-tunes-motion-neurons-to-visual-ecology-in-three-species-of-hawkmoths
#7
A L Stöckl, D O'Carroll, E J Warrant
To sample information optimally, sensory systems must adapt to the ecological demands of each animal species. These adaptations can occur peripherally, in the anatomical structures of sensory organs and their receptors; and centrally, as higher-order neural processing in the brain. While a rich body of investigations has focused on peripheral adaptations, our understanding is sparse when it comes to central mechanisms. We quantified how peripheral adaptations in the eyes, and central adaptations in the wide-field motion vision system, set the trade-off between resolution and sensitivity in three species of hawkmoths active at very different light levels: nocturnal Deilephila elpenor, crepuscular Manduca sexta, and diurnal Macroglossum stellatarum...
June 28, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28637849/breaking-out-of-the-comfort-zone-el-ni%C3%A3-o-southern-oscillation-as-a-driver-of-trophic-flows-in-a-benthic-consumer-of-the-humboldt-current-ecosystem
#8
José M Riascos, Marco A Solís, Aldo S Pacheco, Manuel Ballesteros
The trophic flow of a species is considered a characteristic trait reflecting its trophic position and function in the ecosystem and its interaction with the environment. However, climate patterns are changing and we ignore how patterns of trophic flow are being affected. In the Humboldt Current ecosystem, arguably one of the most productive marine systems, El Niño-Southern Oscillation is the main source of interannual and longer-term variability. To assess the effect of this variability on trophic flow we built a 16-year series of mass-specific somatic production rate (P/B) of the Peruvian scallop (Argopecten purpuratus), a species belonging to a former tropical fauna that thrived in this cold ecosystem...
June 28, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28637439/a-qualitative-analysis-of-smokers-perceptions-about-lung-cancer-screening
#9
Lindsay Gressard, Amy S DeGroff, Thomas B Richards, Stephanie Melillo, Julia Kish-Doto, Christina L Heminger, Elizabeth A Rohan, Kristine Gabuten Allen
BACKGROUND: In 2013, the US Preventive Services Task Force (USPSTF) began recommending lung cancer screening for high risk smokers aged 55-80 years using low-dose computed tomography (CT) scan. In light of these updated recommendations, there is a need to understand smokers' knowledge of and experiences with lung cancer screening in order to inform the design of patient education and tobacco cessation programs. The purpose of this study is to describe results of a qualitative study examining smokers' perceptions around lung cancer screening tests...
June 21, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28637301/eden-evolutionary-dynamics-within-environments
#10
Philipp C Münch, Bärbel Stecher, Alice C McHardy
Summary: Metagenomics revolutionized the field of microbial ecology, giving access to Gb-sized datasets of microbial communities under natural conditions. This enables fine-grained analyses of the functions of community members, studies of their association with phenotypes and environments, as well as of their microevolution and adaptation to changing environmental conditions. However, phylogenetic methods for studying adaptation and evolutionary dynamics are not able to cope with big data...
June 16, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28636789/out-of-the-dark-350-million-years-of-conservatism-and-evolution-in-diel-activity-patterns-in-vertebrates
#11
Samantha R Anderson, John J Wiens
Many animals are active only during a particular time (e.g., day vs. night), a partitioning that may have important consequences for species coexistence. An open question is the extent to which this diel activity niche is evolutionarily conserved or labile. Here, we analyze diel activity data across a phylogeny of 1914 tetrapod species. We find strong phylogenetic signal, showing that closely related species tend to share similar activity patterns. Ancestral reconstructions show that nocturnality was the most likely ancestral diel activity pattern for tetrapods and many major clades within it (e...
June 21, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28634476/changes-in-n-p-supply-ratios-affect-the-ecological-stoichiometry-of-a-toxic-cyanobacterium-and-its-fungal-parasite
#12
Thijs Frenken, Joren Wierenga, Alena S Gsell, Ellen van Donk, Thomas Rohrlack, Dedmer B Van de Waal
Human activities have dramatically altered nutrient fluxes from the landscape into receiving waters. As a result, not only the concentration of nutrients in surface waters has increased, but also their elemental ratios have changed. Such shifts in resource supply ratios will alter autotroph stoichiometry, which may in turn have consequences for higher trophic levels, including parasites. Here, we hypothesize that parasite elemental composition will follow changes in the stoichiometry of its host, and that its reproductive success will decrease with host nutrient limitation...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28634414/monitoring-and-analysis-of-coastal-reclamation-from-1995-2015-in-tianjin-binhai-new-area-china
#13
Wengang Chen, Dongchuan Wang, Yong Huang, Liding Chen, Lihui Zhang, Xiangwang Wei, Mengqin Sang, Feicui Wang, Jinya Liu, Bingxu Hu
Increasing coastal reclamation activities have been undertaken to solve the conflict between people and land resources, creating significant challenges for coordinating coastal reclamation, economic development and environmental protection. This paper analyzes the effects of coast reclamation on Gross Domestic Product growth and the quality of inshore seawater in the Tianjin Binhai New Area. Remote sensing and a Geographic Information System were used to extract the information of coastal reclamation. The correlation between the area of coastal reclamation, GDP growth and the quality of inshore seawater was analyzed and a decoupling elasticity model was used to explore trends in the relationship between economic development and coastal reclamation...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28633950/a-multi-scale-integrated-modeling-framework-to-measure-comprehensive-impact-of-coastal-reclamation-activities-in-yellow-river-estuary-china
#14
Yan Xu, Yanpeng Cai, Tao Sun, Qian Tan
In this paper, an improved multi-scale integrated modeling framework has been established to evaluate coastal reclamation intensity (CRI). About 7 indicators are considered, including ecological degradation intensity (EDI), hydrodynamic disturbance (IHD), engineering types, water quality, economic investment, population growth, and reclaimed land area. Meanwhile, an integrated framework enhanced methods in terms of (a) measuring intensity of ecological degradation process under multi-scale impact, (b) developing the indicator system of CRI, and discussing the driving forces and trends of coastal reclamation, (c) determining fuzzy preference relations of weight and calculating the specific value of CRI with the case study areas of Yellow River estuary from 2000 to 2015...
June 17, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28633514/metagenomic-smrt-sequencing-based-exploration-of-novel-lignocellulose-degrading-capability-in-wood-detritus-from-torreya-nucifera-in-bija-forest-on-jeju-island
#15
Han Na Oh, Tae Kwon Lee, Jae Wan Park, Jee Hyun No, Dockyu Kim, Woo Jun Sul
Lignocellulose, mostly composed of cellulose, hemicellulose and lignin generated through secondary growth of woody plant, is considered as promising resources for bio-fuel. In order to use lignocellulose as a biofuel, the biodegradation besides high-cost chemical treatments were applied, but its knowledge on decomposition of lignocellulose occurring in a natural environment were insufficient. We analyzed 16S rRNA gene and metagenome to understand how the lignocellulose are decomposed naturally in decayed Torreya nucifera (L) of Bija forest (Bijarim) in Gotjawal, an ecologically distinct environment...
June 21, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28633194/moving-forward-in-circles-challenges-and-opportunities-in-modelling-population-cycles
#16
REVIEW
Frédéric Barraquand, Stilianos Louca, Karen C Abbott, Christina A Cobbold, Flora Cordoleani, Donald L DeAngelis, Bret D Elderd, Jeremy W Fox, Priscilla Greenwood, Frank M Hilker, Dennis L Murray, Christopher R Stieha, Rachel A Taylor, Kelsey Vitense, Gail S K Wolkowicz, Rebecca C Tyson
Population cycling is a widespread phenomenon, observed across a multitude of taxa in both laboratory and natural conditions. Historically, the theory associated with population cycles was tightly linked to pairwise consumer-resource interactions and studied via deterministic models, but current empirical and theoretical research reveals a much richer basis for ecological cycles. Stochasticity and seasonality can modulate or create cyclic behaviour in non-intuitive ways, the high-dimensionality in ecological systems can profoundly influence cycling, and so can demographic structure and eco-evolutionary dynamics...
June 20, 2017: Ecology Letters
https://www.readbyqxmd.com/read/28632055/muscle-activity-in-sprinting-a-review
#17
Róisín M Howard, Richard Conway, Andrew J Harrison
The use of electromyography (EMG) is widely recognised as a valuable tool for enhancing the understanding of performance drivers and potential injury risk in sprinting. The timings of muscle activations relative to running gait cycle phases and the technology used to obtain muscle activation data during sprinting are of particular interest to scientists and coaches. This review examined the main muscles being analysed by surface EMG (sEMG), their activations and timing, and the technologies used to gather sEMG during sprinting...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28630904/participatory-adaptive-management-leads-to-environmental-learning-outcomes-extending-beyond-the-sphere-of-science
#18
Marie Fujitani, Andrew McFall, Christoph Randler, Robert Arlinghaus
Resolving uncertainties in managed social-ecological systems requires adaptive experimentation at whole-ecosystem levels. However, whether participatory adaptive management fosters ecological understanding among stakeholders beyond the sphere of science is unknown. We experimentally involved members of German angling clubs (n = 181 in workshops, n = 2483 in total) engaged in self-governance of freshwater fisheries resources in a large-scale ecological experiment of active adaptive management of fish stocking, which constitutes a controversial management practice for biodiversity and ecosystem functioning when conducted inappropriately...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28627494/first-record-of-proliferative-kidney-disease-agent-tetracapsuloides-bryosalmonae-in-wild-brown-trout-and-european-grayling-in-finland
#19
Anti Vasemägi, Ilkka Nousiainen, Ari Saura, Juha-Pekka Vähä, Jorma Valjus, Ari Huusko
The myxozoan endoparasite Tetracapsuloides bryosalmonae causes temperature-driven proliferative kidney disease (PKD) in salmonid fishes. Despite the economic and ecological importance of PKD, information about the distribution of the parasite is still scarce. Here, we report for the first time the occurrence of T. bryosalmonae in wild brown trout Salmo trutta and European grayling Thymallus thymallus populations in Finland. We detected T. bryosalmonae at high prevalence in both brown trout and European grayling from the transboundary Finnish-Russian River Koutajoki system (Rivers Oulankajoki, Kuusinkijoki, Kitkajoki, Maaninkajoki, and Juumajoki) in north-eastern Finland...
June 19, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28627155/-environmental-justice-in-the-epidemiological-surveillance-system-of-residents-in-italian-national-priority-contaminated-sites-sentieri-project
#20
Roberto Pasetto, Nicolás Zengarini, Nicola Caranci, Marco De Santis, Fabrizio Minichilli, Michele Santoro, Roberta Pirastu, Pietro Comba
OBJECTIVES: descriptive evaluation of distributional justice in the epidemiological surveillance system of populations residing in Italian National priority Contaminated Sites (NPCSs) of SENTIERI project. Analysis of the feasibility of monitoring different Environmental Justice dimensions in SENTIERI. DESIGN: descriptive study and ecological meta-analysis. SETTING AN PARTICIPANTS: residents in 298 municipalities included in 44 NPCSs in SENTIERI. Description of their level of deprivation and mortality analysis by deprivation level in the first period evaluated in SENTIERI, years 1995-2002...
January 2017: Epidemiologia e Prevenzione
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