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https://www.readbyqxmd.com/read/27916802/positive-and-negative-impacts-of-non-native-bee-species-around-the-world
#1
REVIEW
Laura Russo
Though they are relatively understudied, non-native bees are ubiquitous and have enormous potential economic and environmental impacts. These impacts may be positive or negative, and are often unquantified. In this manuscript, I review literature on the known distribution and environmental and economic impacts of 80 species of introduced bees. The potential negative impacts of non-native bees include competition with native bees for nesting sites or floral resources, pollination of invasive weeds, co-invasion with pathogens and parasites, genetic introgression, damage to buildings, affecting the pollination of native plant species, and changing the structure of native pollination networks...
November 28, 2016: Insects
https://www.readbyqxmd.com/read/27913257/prodynorphin-and-kappa-opioid-receptor-mrna-expression-in-the-brain-relates-to-social-status-and-behavior-in-male-european-starlings
#2
Lauren V Riters, Melissa A Cordes, Sharon A Stevenson
Numerous animal species display behavioral changes in response to changes in social status or territory possession. For example, in male European starlings only males that acquire nesting sites display high rates of sexual and agonistic behavior. Past studies show that mu and delta opioid receptors regulate behaviors associated with social ascension or defeat. Opioids also act at kappa receptors, with dynorphin binding with the highest affinity; however, the role of these opioids in social behavior has not been well studied...
November 29, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27909951/contrasting-patterns-in-solitary-and-eusocial-bees-while-responding-to-landscape-features-in-the-brazilian-cerrado-a-multiscaled-perspective
#3
D P Silva, D S Nogueira, P De Marco
Landscape structure is an important determinant of biological fluxes and species composition, but species do not respond equally to landscape features or spatial extents. Evaluating "multi-scale" responses of species to landscape structure is an important framework to be considered, allowing insights about habitat requirements for different groups. We evaluated the response of Brazilian Cerrado's bees (eusocial vs. solitary ones) to both the amount and isolation of remnant vegetation in eight nested multiple-local scales...
December 1, 2016: Neotropical Entomology
https://www.readbyqxmd.com/read/27908663/communal-nesting-in-the-garden-dormouse-eliomys-quercinus
#4
Adrià Viñals, Sandro Bertolino, José Antonio Gil-Delgado
Communal nesting has been described in many rodents including some dormouse species. In this study, we report the existence of this reproductive strategy in the garden dormouse Eliomys quercinus. Data was recorded by checking natural nests and nest-boxes from 2003 to 2013 in SE Spain. Pups and adults dormice found in nests were captured and marked. Overall, 198 nests were found: 161 (81.31%) were singular nests and 37 (18.69%) were communal nests. Communal nests were composed by different combinations of one up to three females together with one up to three different size litters...
November 28, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27908545/association-between-fat-mass-and-bone-mineral-density-among-brazilian-women-differs-by-menopausal-status-the-pr%C3%A3-sa%C3%A3%C2%BAde-study
#5
Amina Chain, Marise Crivelli, Eduardo Faerstein, Flávia F Bezerra
OBJECTIVE: The aim of this study was to investigate the association between bone mineral density (BMD) and fat mass (FM) in a multiethnic population of Brazilian women and to evaluate the influence of total body mass and lean mass on this association. METHODS: This was a cross-sectional study nested within the Pro-Saúde Study, a prospective cohort of university civil servants in Rio de Janeiro. Participants were pre- (n = 100) and postmenopausal (n = 166) women...
January 2017: Nutrition
https://www.readbyqxmd.com/read/27907265/conservation-hotspots-for-marine-turtle-nesting-in-the-united-states-based-on-coastal-development
#6
Mariana M P B Fuentes, Christian Gredzens, Brooke L Bateman, Ruth Boettcher, Simona A Ceriani, Matthew H Godfrey, David Helmers, Dianne K Ingram, Ruth L Kamrowski, Michelle Pate, Robert L Pressey, Volker C Radeloff
Coastal areas provide nesting habitat for marine turtles that is critical for the persistence of their populations. However, many coastal areas are highly affected by coastal development, which affects the reproductive success of marine turtles. Knowing the extent to which nesting areas are exposed to these threats is essential to guide management initiatives. This information is particularly important for coastal areas with both high nesting density and dense human development, a combination that is common in the United States...
December 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/27905621/-parechovirus-as-etiologic-agent-of-meningitis-and-or-sepsis-like-illness-in-infants
#7
Valentina Gutiérrez, Constanza Martínez-Valdebenito, Luisa Montecinos, Romina Alarcón, Constanza Gárate, Marcela Ferrés
INTRODUCTION: Human parechovirus (HPeV) belongs to the Picornaviridae family and has been described in viral meningoencephalitis and sepsis like illness in infants. Until now, 16 genotypes have been recognized, the most common are HPEV 1, 2 and 3; type 3 is most severe. AIMS: To estimate the frequency of HPEV etiology in viral meningoencephalitis and sepsis in infants and characterize clinical and molecular aspects of infection. METHODS: Between October 2013 and March 2015 we collected CSF samples, plasma, nasopharyngeal swabs and/or stools of patients younger than two years with suspected sepsis and/or viral meningitis...
August 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27903462/radiomic-based-pathological-response-prediction-from-primary-tumors-and-lymph-nodes-in-nsclc
#8
Thibaud P Coroller, Vishesh Agrawal, Elizabeth Huynh, Vivek Narayan, Stephanie W Lee, Raymond H Mak, Hugo J W L Aerts
INTRODUCTION: Non-invasive biomarkers that capture the total tumor burden could provide important complementary information for precision medicine to aid clinical decision-making. We investigated the value of radiomic data, extracted from pre-treatment computed tomography (CT) images of the primary tumor and lymph nodes, in predicting pathological response following neoadjuvant chemoradiation prior to surgery. METHODS: Eighty-five patients with resectable locally-advanced (stage II-III) non-small cell lung cancer (NSCLC) (median age: 60...
November 26, 2016: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/27894395/relationship-between-hepatitis-b-virus-reverse-transcriptase-181-mutation-and-s-gene-mutation-in-hepatitis-b-virus-chronically-infected-patients
#9
L-P Wang, F-Z Han, X-B Yan, Y-C Fan, K Wang
This study aims to explore clinical significance of HBV rt181 mutation. Serum samples were collected from 226 CHB patients with no anti-viral treatment, and 72 patients with adefovir dipivoxil treatment over 1 year. HBV genes of reverse transcriptase regions were amplified by nested PCR. HBV DNA in pre-S/S regions sequences were determined by sequencing. Mutations in HBV were characterized by mutational analysis. Results indicated that resistant mutation was found in 16 samples (7.08%) with no anti-viral treatment...
October 31, 2016: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/27892984/anatomical-distributions-of-basal-cell-carcinoma-and-squamous-cell-carcinoma-in-a-population-based-study-in-queensland-australia
#10
Padmini Subramaniam, Catherine M Olsen, Bridie S Thompson, David C Whiteman, Rachel E Neale
Importance: Keratinocyte cancers (KCs), including basal cell carcinoma (BCC) and squamous cell carcinoma (SCC), are the most common cancers among fair-skinned populations worldwide. Although studies have indicated that the anatomical distribution of BCC and SCC differ, few have compared them directly in well-defined population samples. Objectives: To describe and compare the anatomical distribution of BCC and SCC in a population-based sample in Queensland, Australia...
November 23, 2016: JAMA Dermatology
https://www.readbyqxmd.com/read/27887566/the-common-redstart-as-a-suitable-model-to-study-cuckoo-host-coevolution-in-a-unique-ecological-context
#11
Peter Samaš, Jarkko Rutila, Tomáš Grim
BACKGROUND: Co-evolutionary arms-races result in spatio-temporally dynamic relationships between interacting species, e.g., brood parasites and their avian hosts. However, majority of avian co-evolutionary studies are limited to "snap-shots" of a single breeding season in an open-nesting host. In a long-term study (11 breeding seasons), we explored a unique system between the brood parasitic common cuckoo (Cuculus canorus) and its host, the common redstart (Phoenicurus phoenicurus) which is exceptional among all cuckoo hosts due to being a cavity nester...
November 25, 2016: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/27886262/coastal-leatherback-turtles-reveal-conservation-hotspot
#12
Nathan J Robinson, Stephen J Morreale, Ronel Nel, Frank V Paladino
Previous studies have shown that the world's largest reptile - the leatherback turtle Dermochelys coriacea - conducts flexible foraging migrations that can cover thousands of kilometres between nesting sites and distant foraging areas. The vast distances that may be travelled by migrating leatherback turtles have greatly complicated conservation efforts for this species worldwide. However, we demonstrate, using a combination of satellite telemetry and stable isotope analysis, that approximately half of the nesting leatherbacks from an important rookery in South Africa do not migrate to distant foraging areas, but rather, forage in the coastal waters of the nearby Mozambique Channel...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27878076/nonmotorized-recreation-and-motorized-recreation-in-shrub-steppe-habitats-affects-behavior-and-reproduction-of-golden-eagles-aquila-chrysaetos
#13
Robert J Spaul, Julie A Heath
Different forms of outdoor recreation have different spatiotemporal activity patterns that may have interactive or cumulative effects on wildlife through human disturbance, physical habitat change, or both. In western North America, shrub-steppe habitats near urban areas are popular sites for motorized recreation and nonmotorized recreation and can provide important habitat for protected species, including golden eagles. Our objective was to determine whether recreation use (i.e., number of recreationists) or recreation features (e...
November 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/27876084/a-trial-to-determine-whether-septic-shock-reversal-is-quicker-in-pediatric-patients-randomized-to-an-early-goal-directed-fluid-sparing-strategy-versus-usual-care-squeeze-study-protocol-for-a-pilot-randomized-controlled-trial
#14
Melissa J Parker, Lehana Thabane, Alison Fox-Robichaud, Patricia Liaw, Karen Choong
BACKGROUND: Current pediatric septic shock resuscitation guidelines from the American College of Critical Care Medicine focus on the early and goal-directed administration of intravascular fluid followed by vasoactive medication infusions for persistent and fluid-refractory shock. However, accumulating adult and pediatric data suggest that excessive fluid administration is associated with worse patient outcomes and even increased risk of death. The optimal amount of intravascular fluid required in early pediatric septic shock resuscitation prior to the initiation of vasoactive support remains unanswered...
November 22, 2016: Trials
https://www.readbyqxmd.com/read/27871337/the-great-spruce-bark-beetle-dendroctonus-micans-kug-coleoptera-scolytidae-in-lithuania-occurrence-phenology-morphology-and-communities-of-associated-fungi
#15
A Menkis, J Lynikienė, A Marčiulynas, A Gedminas, A Povilaitienė
We studied the occurrence, morphology and phenology of Dendroctonus micans in Lithuania and the fungi associated with the beetle at different developmental stages. The occurrence of D. micans was assessed in 19 seed orchards (at least 40 years old) of Picea abies (L. Karst.) situated in different parts of the country. Bark beetle phenology was studied in two sites: a seed orchard of P. abies and a plantation of Picea pungens (Engelm.). D. micans morphology was assessed under the dissection microscope using individuals at different developmental stages that were sampled during phenology observations...
November 22, 2016: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/27870726/melanocytic-nevi-of-special-sites
#16
Christine S Ahn, Analia Guerra, Omar P Sangüeza
Melanocytic nevi located on specific regions of the body can demonstrate unusual histopathological features such as asymmetry, irregular nesting patterns, pagetoid spread, cytologic atypia, and rarely, mitotic activity. However, despite these features that may raise concern for malignant melanoma, these lesions follow a benign clinical course and do not require intervention. Also known as nevi of special sites or nevi with site-related atypia, these melanocytic nevi were initially described on acral sites and genitalia...
December 2016: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/27864933/woody-plant-richness-does-not-influence-invertebrate-community-reassembly-trajectories-in-a-tree-diversity-experiment
#17
Peter Yeeles, Lori Lach, Richard J Hobbs, Mary van Wees, Raphael K Didham
Understanding the relationship between plant diversity and diversity at higher trophic levels is important from both conservation and restoration perspectives. Although there is strong evidence for bottom-up maintenance of biodiversity, this is based largely on studies of simplified grassland systems. Recently, studies in the 'TreeDivNet' global network of tree diversity experiments have begun to test whether these findings are generalizable to more complex ecosystems, such as woodlands. We monitored invertebrate community reassembly over 5 years of experimental woodland restoration at the TreeDivNet 'Ridgefield' site in southwest Australia, testing the effects of woody plant species richness and herb-layer manipulation on invertebrate community structure and ant species composition...
November 19, 2016: Ecology
https://www.readbyqxmd.com/read/27862547/disturbance-mediated-heterogeneity-drives-pollinator-diversity-in-boreal-managed-forest-ecosystems
#18
Antonio Rodríguez, Jari Kouki
Intensive forest management, together with fire suppression, have decreased structural complexity and altered dynamics of boreal forests profoundly. Such management threatens forest biodiversity and can reduce the provision of ecosystem services. Although the importance of ecosystem services is widely acknowledged, conservation strategies are hindered by poor knowledge about diversity patterns of service provider species as well as on mechanisms affecting these assemblages at different spatial and temporal scales...
November 16, 2016: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/27859791/genetic-structure-of-native-ant-supercolonies-varies-in-space-and-time
#19
Eva Schultner, Jari Saramäki, Heikki Helanterä
Ant supercolonies are the largest cooperative units known in nature. They consist of networks of interconnected nests with hundreds of reproductive queens, where individuals move freely between nests, cooperate across nest boundaries and show little aggression towards non-nestmates. The combination of high queen numbers and free mixing of workers, queens and brood between nests results in extremely low nestmate relatedness. In such low-relatedness societies, cooperative worker behaviour appears maladaptive because it may aid random individuals instead of relatives...
November 14, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27859184/neighbor-palatability-generates-associational-effects-by-altering-herbivore-foraging-behavior
#20
Philip G Hahn, John L Orrock
Despite increasing evidence that herbivory on a focal plant may hinge upon the identity of its neighbors, it is not clear whether predictable mechanisms govern the nature and magnitude of such associational effects. Using a factorial field experiment replicated at 14 sites across 80,000 hectares, we evaluated the mechanisms driving associational effects between two plant species mediated by grasshopper herbivores. Our experiment manipulated local neighborhood plant density (two levels) and frequency (three levels), nested within two larger-scale habitat contexts (habitats that did or did not have past agricultural land use)...
August 2016: Ecology
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