abstract：:While studying organisms living in association with the solitary tunicate Phallusia nigra (Ascidiacea, Ascidiidae) from a shallow fringing reef at Zeytouna Beach (Egyptian Red Sea), one of the collected ascidians showed peculiar perforations on its tunic. Once dissected, the perforations revealed to be the openings of...

journal_title：PeerJ

authors： Martin D,Nygren A,Cruz-Rivera E

更新日期：2017-06-01 00:00:00

abstract：BACKGROUND:The scholarly publication landscape is changing rapidly. We investigated whether the introduction of an institutional publications officer might help facilitate better knowledge of publication topics and related resources, and effectively support researchers to publish. METHODS:In September 2015, a purpose-...

journal_title：PeerJ

authors： Cobey KD,Galipeau J,Shamseer L,Moher D

更新日期：2017-05-31 00:00:00

abstract：OBJECTIVES:The purpose of this study is to determine the prevalence and clinical impact of human papillomavirus (HPV) related laryngeal squamous cell carcinoma (LSCC). METHODS:A total of 106 LSCC patients who underwent primary surgical resection with or without adjuvant radiotherapy/chemoradiotherapy were enrolled ret...

journal_title：PeerJ

authors： Chen WC,Chuang HC,Lin YT,Huang CC,Chien CY

更新日期：2017-05-30 00:00:00

abstract：:Although C-type cytoplasmic male sterility (CMS-C) is one of the most attractive tools for maize hybrid seed production, the detailed regulation network of the male sterility remains unclear. In order to identify the CMS-C sterility associated genes and/or pathways, the comparison of the transcriptomes between the CMS...

journal_title：PeerJ

authors： Li C,Zhao Z,Liu Y,Liang B,Guan S,Lan H,Wang J,Lu Y,Cao M

更新日期：2017-05-30 00:00:00

abstract：BACKGROUND:Sturnira is one of the most species-rich genera in the Neotropics, and it is found from Mexico and the Lesser Antilles to Argentina. This genus forms a well-supported monophyletic clade with at least twenty-one recognized species, as well as several others under taxonomic review. Sturnira parvidens is a wide...

journal_title：PeerJ

authors： Gutiérrez EG,Hernández Canchola G,León Paniagua LS,Martínez Méndez N,Ortega J

更新日期：2017-05-24 00:00:00

abstract：:Ceratopsids ("horned dinosaurs") are known from western North America and Asia, a distribution reflecting an inferred subaerial link between the two landmasses during the Late Cretaceous. However, this clade was previously unknown from eastern North America, presumably due to limited outcrop of the appropriate age and...

journal_title：PeerJ

authors： Farke AA,Phillips GE

更新日期：2017-05-23 00:00:00

abstract：BACKGROUND:Estimating volumes and masses of total body components is important for the study and treatment monitoring of nutrition and nutrition-related disorders, cancer, joint replacement, energy-expenditure and exercise physiology. While several equations have been offered for estimating total body components from M...

journal_title：PeerJ

authors： Lacoste Jeanson A,Dupej J,Villa C,Brůžek J

更新日期：2017-05-18 00:00:00

abstract：BACKGROUND:Freezing is commonly used for food preservation. It is usually done under constant atmospheric pressure (isobaric). While extending the life of the produce, isobaric freezing has detrimental effects. It causes loss of food weight and changes in food quality. Using thermodynamic analysis, we have developed a ...

journal_title：PeerJ

authors： Lyu C,Nastase G,Ukpai G,Serban A,Rubinsky B

更新日期：2017-05-18 00:00:00

abstract：BACKGROUND:The NDUFS4 gene encodes an 18-kD subunit of mitochondria complex I, and mutations in this gene lead to the development of a severe neurodegenerative disease called Leigh syndrome (LS) in humans. To investigate the disease phenotypes and molecular mechanisms of Leigh syndrome, the Ndufs4 knockout (KO) mouse h...

journal_title：PeerJ

authors： Wang M,Huang YP,Wu H,Song K,Wan C,Chi AN,Xiao YM,Zhao XY

更新日期：2017-05-18 00:00:00

abstract：BACKGROUND:Invasive species are among the most significant threats to biodiversity. The diet of invasive animal populations is a crucial factor that must be considered in the context of biological invasions. A broad dietary spectrum is a frequently cited characteristic of invasive species, allowing them to thrive in a ...

journal_title：PeerJ

authors： Courant J,Vogt S,Marques R,Measey J,Secondi J,Rebelo R,De Villiers A,Ihlow F,De Busschere C,Backeljau T,Rödder D,Herrel A

更新日期：2017-05-16 00:00:00

abstract：:The main objective of this research was to test central assumptions from the Self-centeredness/Selflessness Happiness Model. According to this model, while self-centered psychological functioning induces fluctuating happiness, authentic-durable happiness results from selflessness. Distinct mediating processes are supp...

journal_title：PeerJ

authors： Dambrun M

更新日期：2017-05-11 00:00:00

abstract：:Seasonality impacts species distributions through changes of the environmental conditions that affect the presence of individuals at a given place. Although the dynamics of cave microclimates are well known, only a few studies have evaluated the effects of such dynamics on non-strictly cave species. Here we assessed i...

journal_title：PeerJ

authors： Lunghi E,Manenti R,Ficetola GF

更新日期：2017-05-10 00:00:00

abstract：:Anonymous student evaluations of teaching (SETs) are used by colleges and universities to measure teaching effectiveness and to make decisions about faculty hiring, firing, re-appointment, promotion, tenure, and merit pay. Although numerous studies have found that SETs correlate with various teaching effectiveness irr...

journal_title：PeerJ

authors： Uttl B,Smibert D

更新日期：2017-05-09 00:00:00

abstract：:The phylum Actinobacteria constitutes one of the largest and anciently divergent phyla within the Bacteria domain. Actinobacterial diversity has been thoroughly researched in various environments due to its unique biotechnological potential. Such studies have focused mostly on soil communities, but more recently marin...

journal_title：PeerJ

authors： Arocha-Garza HF,Canales-Del Castillo R,Eguiarte LE,Souza V,De la Torre-Zavala S

更新日期：2017-05-02 00:00:00

abstract：:Transition zones are of high evolutionary interest because unique patterns of spatial variation are often retained. Here, we investigated the phylogeography of the peacock blenny, Salaria pavo, a small marine intertidal fish that inhabits rocky habitats of the Mediterranean and the adjacent Atlantic Ocean. We screened...

journal_title：PeerJ

authors： Castilho R,Cunha RL,Faria C,Velasco EM,Robalo JI

更新日期：2017-04-27 00:00:00

abstract：BACKGROUND:As one of the highest forest ecosystems in the world, Polylepis forests are recognized both as center of endemism and diversity along the Andes and as an ecosystem under serious threat from habitat loss, fragmentation, and climate change due to human activities. Effective conservation efforts are limited, in...

journal_title：PeerJ

authors： Sevillano-Ríos CS,Rodewald AD

更新日期：2017-04-27 00:00:00

abstract：:Pantoea stewartii subsp. stewartii is a bacterial phytopathogen that causes Stewart's wilt disease in corn. It uses quorum sensing to regulate expression of some genes involved in virulence in a cell density-dependent manner as the bacterial population grows from small numbers at the initial infection site in the leaf...

journal_title：PeerJ

authors： Packard H,Kernell Burke A,Jensen RV,Stevens AM

更新日期：2017-04-27 00:00:00

abstract：BACKGROUND:The human microbiota plays a key role in health and disease, and bacteriocins, which are small, bacterially produced, antimicrobial peptides, are likely to have an important function in the stability and dynamics of this community. Here we examined the density and distribution of the subclass I lantibiotic m...

journal_title：PeerJ

authors： Walsh CJ,Guinane CM,O' Toole PW,Cotter PD

更新日期：2017-04-27 00:00:00

abstract：:A period of starvation is regarded as a sound practice in aquaculture prior to handling, transportation and harvest, to minimise impacts on welfare and ensure proper hygiene after harvest. However, documentation of welfare issues such as stress following starvation and handling in adult Atlantic salmon are lacking. Th...

journal_title：PeerJ

authors： Waagbø R,Jørgensen SM,Timmerhaus G,Breck O,Olsvik PA

更新日期：2017-04-27 00:00:00

abstract：BACKGROUND:Essential oil components (EOCs) are molecules with interesting application in pest control, these have been evaluated against different insect pest from more than 100 years, but their practical use is rather limited. Thus, the enhancement of their bioavailability and manageability due to their dispersion in ...

journal_title：PeerJ

authors： Lucia A,Toloza AC,Guzmán E,Ortega F,Rubio RG

更新日期：2017-04-20 00:00:00

abstract：:Determining whether a population is introduced or native to a region can be challenging due to inadequate taxonomy, the presence of cryptic lineages, and poor historical documentation. For taxa with resting stages that bloom episodically, determining origin can be especially challenging as an environmentally-triggered...

journal_title：PeerJ

authors： Govindarajan AF,Carman MR,Khaidarov MR,Semenchenko A,Wares JP

更新日期：2017-04-18 00:00:00

abstract：BACKGROUND:Staphylococci are commensals of the mucosal surface and skin of humans and animals, but have been implicated in infections such as otitis externa, pyoderma, urinary tract infections and post-surgical complications. Laboratory records provide useful information to help investigate these infections. Therefore,...

journal_title：PeerJ

authors： Qekwana DN,Oguttu JW,Sithole F,Odoi A

更新日期：2017-04-13 00:00:00

abstract：:Alzheimer's disease is a multifactorial disorder caused by the interaction of genetic, epigenetic and environmental factors. The formation of cytotoxic oligomers consisting of Aβ peptide is widely accepted as being one of the main key events triggering the development of Alzheimer's disease. Aβ peptide production resu...

journal_title：PeerJ

authors： Parenti N,Del Grosso A,Antoni C,Cecchini M,Corradetti R,Pavone FS,Calamai M

更新日期：2017-04-12 00:00:00

abstract：:Although neonicotinoids are targeted at insects, their predominant use as a seed dressing and their long persistence in soils mean that non-target soil organisms such as earthworms are likely to be chronically exposed to them. Chronic exposure may pose risks that are not evaluated in most toxicity tests. We experiment...

journal_title：PeerJ

authors： Basley K,Goulson D

更新日期：2017-04-11 00:00:00

abstract：BACKGROUND:Conserving biodiversity in tropical landscapes is a major challenge to scientists and conservationists. Current rates of deforestation, fragmentation, and land use intensification are producing variegated landscapes with undetermined values for the conservation of biological communities and ecosystem functio...

journal_title：PeerJ

authors： Costa C,Oliveira VHF,Maciel R,Beiroz W,Korasaki V,Louzada J

更新日期：2017-04-04 00:00:00

abstract：AIMS:Mountain ranges in the tropics are characterised by high levels of localised endemism, often-aberrant evolutionary trajectories, and some of the world's most diverse regional biotas. Here we investigate the evolution of montane endemism, ecology and body size in a clade of direct-developing frogs (Choerophryne, Mi...

journal_title：PeerJ

authors： Oliver PM,Iannella A,Richards SJ,Lee MS

更新日期：2017-03-30 00:00:00

abstract：:In the Western honey bee, Apis mellifera, queens and workers have different longevity although they share the same genome. Queens consume royal jelly (RJ) as the main food throughout their life, including as adults, but workers only eat worker jelly when they are larvae less than 3 days old. In order to explore the ef...

journal_title：PeerJ

authors： Yang W,Tian Y,Han M,Miao X

更新日期：2017-03-28 00:00:00

abstract：BACKGROUND:Habitat selection and its adaptive outcomes are crucial features for animal life-history strategies. Nevertheless, congruence between habitat preferences and breeding success has been rarely demonstrated, which may result from the single-scale evaluation of animal choices. As habitat selection is a complex m...

journal_title：PeerJ

authors： Jedlikowski J,Brambilla M

更新日期：2017-03-28 00:00:00

abstract：OBJECTIVE:The purpose of this study was to assess the effects of age, body condition score (BCS) and muscle condition score (MCS) on indirect radial and coccygeal Doppler systolic arterial blood pressure (SAP) measurements in dogs. METHODS:Sixty-two privately-owned dogs were enrolled between June and July 2016. The BC...

journal_title：PeerJ

authors： Mooney AP,Mawby DI,Price JM,Whittemore JC

更新日期：2017-03-22 00:00:00

abstract：BACKGROUND:Zika virus (ZIKV) transmission has been reported in 67 countries/territories in the Oceania region and the Americas since 2015, prompting the World Health Organization (WHO) to declare ZIKV as a Public Health Emergency of International Concern in February 2016, due to its strong association with medical comp...

journal_title：PeerJ

authors： Hsieh YH

更新日期：2017-03-21 00:00:00

abstract：:Hydrolysis of ATP by Na+/K+-ATPase, a P-Type ATPase, catalyzing active Na+ and K+ transport through cellular membranes leads transiently to a phosphorylation of its catalytical α-subunit. Surprisingly, three-dimensional molecular structure analysis of P-type ATPases reveals that binding of ATP to the N-domain connecte...

journal_title：PeerJ

authors： Tejral G,Sopko B,Necas A,Schoner W,Amler E

更新日期：2017-03-14 00:00:00

abstract：:The Hydroporus memnonius species group includes both widespread and range restricted diving beetle taxa in the western Palaearctic, some of which have been divided into a number of geographical subspecies. Of these, Hydroporus necopinatus is distributed in the far west of Europe, from central Spain to southern Britain...

journal_title：PeerJ

authors： Bilton DT,Turner L,Foster GN

更新日期：2017-03-09 00:00:00

abstract：:Trees in the Morus genera belong to the Moraceae family. To better understand the species status of genus Morus and to provide information for studies on evolutionary biology within the genus, the complete chloroplast (cp) genomes of M. cathayana and M. multicaulis were sequenced. The plastomes of the two species are ...

journal_title：PeerJ

authors： Kong WQ,Yang JH

更新日期：2017-03-08 00:00:00

abstract：BACKGROUND:The practice of feeding of diets containing raw animal products (RAP) to pets (dogs and cats) is discouraged by veterinary organizations and governmental public health organizations. Nevertheless, the practice of feeding RAP to pets is increasing in popularity. Pet owner motivations for feeding RAP diets to ...

journal_title：PeerJ

authors： Morgan SK,Willis S,Shepherd ML

更新日期：2017-03-02 00:00:00

abstract：:We present a new supertree method that enables rapid estimation of a summary tree on the scale of millions of leaves. This supertree method summarizes a collection of input phylogenies and an input taxonomy. We introduce formal goals and criteria for such a supertree to satisfy in order to transparently and justifiabl...

journal_title：PeerJ

authors： Redelings BD,Holder MT

更新日期：2017-03-01 00:00:00

abstract：:Amphibian populations are highly vulnerable to road mortality and habitat fragmentation caused by road networks. Wildlife road tunnels are considered the most promising road mitigation measure for amphibians yet generally remain inadequately monitored, resulting in mixed success rates in the short-term and uncertain c...

journal_title：PeerJ

authors： Matos C,Petrovan S,Ward AI,Wheeler P

更新日期：2017-02-28 00:00:00

abstract：:The hydrological connectivity between the salt marsh and the sea was partially restored in a Mediterranean wetland containing isolated ponds resulting from former salt extraction and aquaculture activities. A preliminary assessment provided evidence that ponds farther from the sea hosted very large numbers of the enda...

journal_title：PeerJ

authors： Prado P,Alcaraz C,Jornet L,Caiola N,Ibáñez C

更新日期：2017-02-28 00:00:00

abstract：INTRODUCTION:There is much literature devoted to the problem of drug resistance and decreased susceptibility of fungi to commonly used antifungals. AIM:To analyze drug susceptibility of Candida albicans and non-Candida albicans strains isolated from the hands of people without any symptoms of disease over a 16-year pe...

journal_title：PeerJ

authors： Łukaszuk C,Krajewska-Kułak E,Kułak W

更新日期：2017-02-23 00:00:00

abstract：:Acontia, located in the gastrovascular cavity of anemone, are thread-like tissue containing numerous stinging cells which serve as a unique defense tissue against predators of the immobile acontiarian sea anemone. Although its morphology and biological functions, such as defense and digestion, have been studied, the d...

journal_title：PeerJ

authors： Lam J,Cheng YW,Chen WU,Li HH,Chen CS,Peng SE

更新日期：2017-02-21 00:00:00

abstract：:The exoskeleton is an important source of characters for the taxonomy of Hydroidolina. It originates as epidermal secretions and, among other functions, protects the coenosarc of the polypoid stage. However, comparative studies on the exoskeletal tissue origin, development, chemical, and structural characteristics, as...

journal_title：PeerJ

authors： Mendoza-Becerril MA,Marian JE,Migotto AE,Marques AC

更新日期：2017-02-16 00:00:00