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- Author:
- Huanyu Qiao; Hildo H. Offenberg; Lorinda K. Anderson
- Source:
- Chromosoma 2012 v.121 no.3 pp. 291-305
- ISSN:
- 0009-5915
- Subject:
- chromosomes; crossing over; eukaryotic cells; germ cells; mutants; proteins; synaptonemal complex; tomatoes
- Abstract:
- ... In most multicellular eukaryotes, synapsis [synaptonemal complex (SC) formation] between pairs of homologous chromosomes during prophase I of meiosis is closely linked with crossing over. Asynaptic mutants in plants have reduced synapsis and increased univalent frequency, often resulting in genetically unbalanced gametes and reduced fertility. Surprisingly, some asynaptic mutants (like as1 in toma ...
- DOI:
- 10.1007/s00412-012-0363-z
- PubMed:
- 22350750
- https://doi.org/10.1007/s00412-012-0363-z
- Author:
- Mônica da Silva-Nunes; Marta Moreno; Jan E. Conn; Dionicia Gamboa; Shira Abeles; Joseph M. Vinetz; Marcelo U. Ferreira
- Source:
- Acta tropica 2012 v.121 no.3 pp. 281-291
- ISSN:
- 0001-706X
- Subject:
- Culicidae; Plasmodium vivax; humans; issues and policy; malaria; parasites; public health; villages; Amazonia; Brazil; Caribbean; Peru
- Abstract:
- ... Across the Americas and the Caribbean, nearly 561,000 slide-confirmed malaria infections were reported officially in 2008. The nine Amazonian countries accounted for 89% of these infections; Brazil and Peru alone contributed 56% and 7% of them, respectively. Local populations of the relatively neglected parasite Plasmodium vivax, which currently accounts for 77% of the regional malaria burden, are ...
- DOI:
- 10.1016/j.actatropica.2011.10.001
- PubMed:
- 22015425
- PubMed Central:
- PMC3308722
- https://doi.org/10.1016/j.actatropica.2011.10.001
- Author:
- A. Corrêa; J. Gurevitch; M. A. Martins‐Loução; C. Cruz
- Source:
- Oikos 2012 v.121 no.3 pp. 449-463
- ISSN:
- 0030-1299
- Subject:
- ectomycorrhizae; fungi; nutrient uptake; nutrients; plant growth
- Abstract:
- ... Mycorrhizal benefit to plants is most frequently evaluated through growth differences between mycorrhizal (M) and non‐mycorrhizal (NM) plants. These growth differences are often considered to be due to differences in belowground C expenditure, or in cost efficiency, i.e. amount of nutrients acquired per C expended. We searched published reports for relations between plant growth and belowground C ...
- DOI:
- 10.1111/j.1600-0706.2011.19406.x
- https://doi.org/10.1111/j.1600-0706.2011.19406.x
- Author:
- Marco A. Molina‐Montenegro; Elsa E. Cleland; Sean M. Watts; Bernardo R. Broitman
- Source:
- Oikos 2012 v.121 no.3 pp. 389-395
- ISSN:
- 0030-1299
- Subject:
- biogeography; colonizing ability; ecological invasion; flora; habitats; indigenous species; introduced species; invasive species; life history; mature plants; seed dispersal; seeds; California
- Abstract:
- ... Determining combinations of functional traits that allow a species to colonize new habitats has been central in the development of invasion ecology. Species able to establish in new communities harbor abilities or traits that allow them to use resources or tolerate stress in ways that native species cannot. Tradeoffs among species functional traits along the competition–colonization (CC) continuum ...
- DOI:
- 10.1111/j.1600-0706.2011.18943.x
- https://doi.org/10.1111/j.1600-0706.2011.18943.x
- Author:
- William J. Moss; Douglas E. Norris; Sungano Mharakurwa; Alan Scott; Modest Mulenga; Peter R. Mason; James Chipeta; Philip E. Thuma; for the Southern Africa ICEMR Team
- Source:
- Acta tropica 2012 v.121 no.3 pp. 207-211
- ISSN:
- 0001-706X
- Subject:
- career development; epidemiology; genetics; malaria; parasites; research institutions; Southern Africa
- Abstract:
- ... The burden of malaria has decreased dramatically within the past several years in parts of sub-Saharan Africa, including regions of Southern Africa. Important to effective regional malaria control in Southern Africa is the appreciation that the reductions in malaria have not been achieved uniformly, with some countries experiencing resurgence. Understanding the reasons for sustained low-level mala ...
- DOI:
- 10.1016/j.actatropica.2011.06.019
- PubMed:
- 21871864
- PubMed Central:
- PMC3248614
- https://doi.org/10.1016/j.actatropica.2011.06.019
- Author:
- R K YADAV; K RUPA KUMAR; M RAJEEVAN
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 611-623
- ISSN:
- 0253-4126
- Subject:
- temporal variation; statistics; rivers; water supply; winter; meteorology; Earth system science; hills; glaciers; melting; atmospheric precipitation; crops; India; Himalayan region
- Abstract:
- ... Northwestern parts of India receive considerable amount of precipitation during the winter months of December–March. Although, it is only about 15% of the annual precipitation, the precipitation is very important for rabi crops and to maintain the glaciers extend in the Himalaya, which melt and supply water to the rivers during other seasons. The precipitation is mainly associated with the sequenc ...
- DOI:
- 10.1007/s12040-012-0184-8
- https://doi.org/10.1007/s12040-012-0184-8
- Author:
- VIRENDRA BAHADUR SINGH; AL RAMANATHAN; JOSE GEORGE POTTAKKAL; PARMANAND SHARMA; ANURAG LINDA; MOHD FAROOQ AZAM; C CHATTERJEE
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 625-636
- ISSN:
- 0253-4126
- Subject:
- geochemistry; cations; watersheds; analytical chemistry; sulfates; rocks; weathering; anions; sodium; oxidation; protons; Earth system science; calcium; bicarbonates; potassium; statistical analysis; ionic strength; hydrochemistry; snowmelt; carbonates; nitric oxide; chlorides; glaciers; magnesium; carbonation; sulfides; nitrates; India; Himalayan region
- Abstract:
- ... A detailed analytical study of major cations (Ca2 + , Mg2 + , Na + , K + ) and anions (SO[Formula: see text], HCO[Formula: see text], Cl − , NO[Formula: see text] of meltwater draining from Gangotri Glacier was carried out to understand major ion chemistry and to get an insight into geochemical weathering processes controlling hydrochemistry of the glacier. In the meltwater, the abundance order of ...
- DOI:
- 10.1007/s12040-012-0177-7
- https://doi.org/10.1007/s12040-012-0177-7
- Author:
- Arne Schröder; Lennart Persson; André M. de Roos
- Source:
- Oikos 2012 v.121 no.3 pp. 417-427
- ISSN:
- 0030-1299
- Subject:
- biomass; ecosystems; food webs; natural foods; phytoplankton; species diversity
- Abstract:
- ... Food webs can respond in surprising and complex ways to temporary alterations in their species composition. When such a perturbation is reversed, food webs have been shown to either return to the pre‐perturbation community state or remain in the food web configuration that established during the perturbation. Here we report findings from a replicated whole‐lake experiment investigating food web re ...
- DOI:
- 10.1111/j.1600-0706.2011.19764.x
- https://doi.org/10.1111/j.1600-0706.2011.19764.x
- Author:
- S KRISHNA KUMAR; N CHANDRASEKAR; P SERALATHAN; J DAJKUMAR SAHAYAM
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 733-745
- ISSN:
- 0253-4126
- Subject:
- sediments; freshwater; ephemeral streams; energy; islands; sea level; Earth system science; sediment transport; rocks; terraces; corals; climatic factors; India
- Abstract:
- ... The reef and associated beachrock from certain Gulf of Mannar islands (Rameswaram, Kurusadai, Shingle and Appa Island) were studied to assess the diagenetic evidences. Sixty samples were collected from marine terraces and reef platforms. The samples comprised of coral rubbles, shell fragments and lithic fractions. The presence of corals in the form of framework or isolated patches on the reef flat ...
- DOI:
- 10.1007/s12040-012-0183-9
- https://doi.org/10.1007/s12040-012-0183-9
- Author:
- Deepa Agashe; Daniel I. Bolnick
- Source:
- Oikos 2012 v.121 no.3 pp. 347-356
- ISSN:
- 0030-1299
- Subject:
- Tribolium castaneum; Tribolium freemani; corn; genetic resources; genetic traits; genetic variation; intraspecific competition; niches; population growth; population size; stable isotopes
- Abstract:
- ... Population dynamics and resource use are often intricately connected via densityâdependent intraspecific competition. However, experimental studies of concurrent change in population and resource use dynamics are scarce. In particular, the impact of factors such as genetic diversity, which can affect both population dynamics and competition, remains unexplored. Using stable isotope analysis and ...
- DOI:
- 10.1111/j.1600-0706.2011.19824.x
- https://doi.org/10.1111/j.1600-0706.2011.19824.x
- Author:
- P K JANA; D SARKAR; D K SAHA; S K MIDYA
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 711-722
- ISSN:
- 0253-4126
- Subject:
- sulfur dioxide; solar radiation; Earth system science; ozone; rain; nitrogen dioxide; troposphere; India
- Abstract:
- ... The paper presents the nature of annual cycles of tropospheric ozone, cloud occurrences, NO2, rainfall, SO2, SPM, CO, non-methane hydrocarbon and surface solar radiation for the period October 2004 to June 2009 over Alipore (22.52°N, 88.33°E), India. Annual cycle of low-level cloud occurrences depicts that the low-level cloud over Alipore had been noticed to occur for many days and nights, parti ...
- DOI:
- 10.1007/s12040-012-0196-4
- https://doi.org/10.1007/s12040-012-0196-4
- Author:
- Vanina R. Chalcoff; Marcelo A. Aizen; Cecilia Ezcurra
- Source:
- Oikos 2012 v.121 no.3 pp. 471-480
- ISSN:
- 0030-1299
- Subject:
- Apoidea; Diptera; Embothrium; biogeography; filters; fruit set; hummingbirds; mutualism; pollen; pollination; pollinators; rain; rain forests; soil erosion; Andes region; Argentina
- Abstract:
- ... The limit of a speciesâ distribution can be determined biotically if an environmental gradient causes the loss of critical mutualists such as pollinators. We assessed this hypothesis for Embothrium coccineum, a selfâincompatible redâflowered treelet growing along a strong westâeast precipitation gradient from rainforest to forestâsteppe ecotone in the rain shadow of the southern Andes in ...
- DOI:
- 10.1111/j.1600-0706.2011.19663.x
- https://doi.org/10.1111/j.1600-0706.2011.19663.x
- Author:
- Martin Leeb; Anton Wutz
- Source:
- Chromosoma 2012 v.121 no.3 pp. 251-262
- ISSN:
- 0009-5915
- Subject:
- DNA methylation; cell differentiation; eggs; embryonic stem cells; epigenetics; functional properties; gene expression; genes; mice; somatic cells; transcription factors
- Abstract:
- ... The distinct cell types of the body are established from the fertilized egg in development and assembled into functional tissues. Functional characteristics and gene expression patterns are then faithfully maintained in somatic cell lineages over a lifetime. On the molecular level, transcription factors initiate lineage-specific gene expression programmmes and epigenetic regulation contributes to ...
- DOI:
- 10.1007/s00412-012-0365-x
- PubMed:
- 22427185
- PubMed Central:
- PMC3350763
- https://doi.org/10.1007/s00412-012-0365-x
- Author:
- Wei Li; M. Henry H. Stevens
- Source:
- Oikos 2012 v.121 no.3 pp. 435-441
- ISSN:
- 0030-1299
- Subject:
- colonizing ability; ecosystems; trophic relationships
- Abstract:
- ... The fluctuating resource hypothesis (FRH) proposes that fluctuations in resource supply can temporally reduce competitive pressure from resident species, thereby providing ephemeral opportunities for invading species. Although FRH has the potential to integrate many existing hypotheses regarding mechanisms of community invasibility, previous tests and evaluations of FRH were based on single trophi ...
- DOI:
- 10.1111/j.1600-0706.2011.19762.x
- https://doi.org/10.1111/j.1600-0706.2011.19762.x
- Author:
- SHEENA V DEV; M RADHAKRISHNA; SHYAM CHAND; C SUBRAHMANYAM
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 813-822
- ISSN:
- 0253-4126
- Subject:
- topography; basins; Earth system science; models; tectonics; gravity; India
- Abstract:
- ... Litho-stratigraphic variation of sedimentary units constructed from seismic sections and gravity anomaly in the Konkan and Kerala basins of the western continental margin of India (WCMI) have been used to model processes such as lithospheric rifting mechanism, its strength, and evolution of flank uplift topography that led to the present-day Western Ghats escarpment. Based on the process-oriented ...
- DOI:
- 10.1007/s12040-012-0186-6
- https://doi.org/10.1007/s12040-012-0186-6
- Author:
- K RAJENDRAN; RAVI S NANJUNDIAH; SULOCHANA GADGIL; J SRINIVASAN
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 595-610
- ISSN:
- 0253-4126
- Subject:
- General Circulation Models; cold; monsoon season; oceans; rain; surface water temperature; Indian Ocean
- Abstract:
- ... The failure of atmospheric general circulation models (AGCMs) forced by prescribed SST to simulate and predict the interannual variability of Indian/Asian monsoon has been widely attributed to their inability to reproduce the actual sea surface temperature (SST)ârainfall relationship in the warm Indo-Pacific oceans. This assessment is based on a comparison of the observed and simulated correlati ...
- DOI:
- 10.1007/s12040-012-0185-7
- https://doi.org/10.1007/s12040-012-0185-7
- Author:
- SHYAMAL GHOSH; SUBASHISA DUTTA
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 637-657
- ISSN:
- 0253-4126
- Subject:
- climate change; climate models; floods; model validation; monsoon season; prediction; probability analysis; rivers; time series analysis
- Abstract:
- ... Being the highest specific discharge river system in the world, the Brahmaputra river experiences a number of long-duration flood waves during the monsoon season annually. In order to assess the flood characteristics at the basin and tributary scales, a physically based macro-scale distributed hydrological model (DHM) has been calibrated and validated for 9 wet years. The model performance has bee ...
- DOI:
- 10.1007/s12040-012-0181-y
- https://doi.org/10.1007/s12040-012-0181-y
- Author:
- Jesús Page; Roberto de la Fuente; Marcia Manterola; María Teresa Parra; Alberto Viera; Soledad Berríos; Raúl Fernández-Donoso; Julio S. Rufas
- Source:
- Chromosoma 2012 v.121 no.3 pp. 307-326
- ISSN:
- 0009-5915
- Subject:
- DNA repair; RNA; Y chromosome; autosomes; histones; lysine; mammals; meiosis; pachytene stage; sex chromatin; temporal variation; transcription (genetics)
- Abstract:
- ... During the first meiotic prophase in male mammals, sex chromosomes undergo a program of transcriptional silencing called meiotic sex chromosome inactivation (MSCI). MSCI is triggered by accumulation of proteins like BRCA1, ATR, and γH2AX on unsynapsed chromosomes, followed by local changes on the sex chromatin, including histone modifications, incorporation of specific histone variants, non-histon ...
- DOI:
- 10.1007/s00412-012-0364-y
- PubMed:
- 22366883
- https://doi.org/10.1007/s00412-012-0364-y
- Author:
- M. Maggie O’Meara; Jeffrey A. Simon
- Source:
- Chromosoma 2012 v.121 no.3 pp. 221-234
- ISSN:
- 0009-5915
- Subject:
- acetylation; chromatin; gene silencing; genes; methylation; phosphorylation; protein subunits
- Abstract:
- ... Polycomb repressive complex 2 (PRC2) is a conserved multisubunit enzyme that methylates histone H3 on lysine-27. This chromatin modification is a hallmark of target genes transcriptionally silenced by the Polycomb system. At its core, PRC2 activity depends upon the SET domain active site of its catalytic subunit, EZH2, as well as critical stimulatory inputs from noncatalytic subunits, especially E ...
- DOI:
- 10.1007/s00412-012-0361-1
- PubMed:
- 22349693
- PubMed Central:
- PMC3351537
- https://doi.org/10.1007/s00412-012-0361-1
- Author:
- Don P. Mathanga; Edward D. Walker; Mark L. Wilson; Doreen Ali; Terrie E. Taylor; Miriam K. Laufer
- Source:
- Acta tropica 2012 v.121 no.3 pp. 212-217
- ISSN:
- 0001-706X
- Subject:
- burden of disease; data collection; health services; hosts; infrastructure; insecticides; issues and policy; malaria; parasites; public health; spraying; Malawi
- Abstract:
- ... The last decade has seen an increase in investment and concerted efforts by the Malawi Ministry of Health and partners to control malaria disease. This report summarizes what is known about the burden of malaria and the strategies being implemented to control it in Malawi. Over the past 5 years, roll out of treatment and prevention efforts have been successful in the country, as demonstrated by in ...
- DOI:
- 10.1016/j.actatropica.2011.06.017
- PubMed:
- 21763670
- PubMed Central:
- PMC3681411
- https://doi.org/10.1016/j.actatropica.2011.06.017
- Author:
- Mark L. Wilson; Edward D. Walker; Themba Mzilahowa; Don P. Mathanga; Terrie E. Taylor
- Source:
- Acta tropica 2012 v.121 no.3 pp. 218-226
- ISSN:
- 0001-706X
- Subject:
- Anopheles; Plasmodium; malaria; morbidity; mortality; parasites; population genetics; public health; risk; Malawi
- Abstract:
- ... Malaria control in the impoverished, highly endemic settings of sub-Saharan Africa remains a major public health challenge. Successes have been achieved only where sustained, concerted, multi-pronged interventions have been instituted. As one of the world‘s poorest countries, Malawi experiences malaria incidence rates that have remained high despite a decade of gradually expanding and more intensi ...
- DOI:
- 10.1016/j.actatropica.2011.11.002
- PubMed:
- 22100546
- PubMed Central:
- PMC3294061
- https://doi.org/10.1016/j.actatropica.2011.11.002
- Author:
- Krishnamoorthy Narayanasamy; Laura Chery; Analabha Basu; Manoj T. Duraisingh; Ananias Escalante; Joseph Fowble; Jennifer L. Guler; Thurston Herricks; Ashwani Kumar; Partha Majumder; Jennifer Maki; Anjali Mascarenhas; Janneth Rodrigues; Bikram Roy; Somdutta Sen; Jayanthi Shastri; Joseph Smith; Neena Valecha; John White; Pradipsinh K. Rathod
- Source:
- Acta tropica 2012 v.121 no.3 pp. 256-266
- ISSN:
- 0001-706X
- Subject:
- Culicidae; National Institutes of Health; Plasmodium falciparum; Plasmodium vivax; disease outbreaks; erythrocytes; evolution; genetic traits; genetic variation; genome; hospitals; humans; in vitro studies; industry; malaria; parasites; pathogenesis; pathogenicity; patients; rural hospitals; schools; scientists; sequence analysis; state government; vector competence; India; United States
- Abstract:
- ... The study of malaria parasites on the Indian subcontinent should help us understand unexpected disease outbreaks and unpredictable disease presentations from Plasmodium falciparum and Plasmodium vivax infections. The Malaria Evolution in South Asia (MESA) research program is one of ten International Centers of Excellence for Malaria Research (ICEMR) sponsored by the US National Institutes of Healt ...
- DOI:
- 10.1016/j.actatropica.2012.01.008
- PubMed:
- 22266213
- PubMed Central:
- PMC3894252
- https://doi.org/10.1016/j.actatropica.2012.01.008
- Author:
- Myriam Arevalo-Herrera; Martha Lucia Quiñones; Carlos Guerra; Nora Céspedes; Sandra Giron; Martha Ahumada; Juan Gabriel Piñeros; Norma Padilla; Zilka Terrientes; Ángel Rosas; Julio Cesar Padilla; Ananias A. Escalante; John C. Beier; Socrates Herrera
- Source:
- Acta tropica 2012 v.121 no.3 pp. 303-314
- ISSN:
- 0001-706X
- Subject:
- Anopheles; Latinos; National Institutes of Health; Plasmodium vivax; World Health Organization; anemia; bed nets; climate change; deforestation; disease outbreaks; drug resistance; genetic variation; health promotion; hypersensitivity; malaria; monitoring; morbidity; mortality; parasites; risk; species diversity; tuberculosis; vector control; Andes region; Brazil; Central America; Latin America
- Abstract:
- ... Approximately 170 million inhabitants of the American continent live at risk of malaria transmission. Although the continent's contribution to the global malaria burden is small, at least 1–1.2 million malaria cases are reported annually. Sixty percent of the malaria cases occur in Brazil and the other 40% are distributed in 20 other countries of Central and South America. Plasmodium vivax is the ...
- DOI:
- 10.1016/j.actatropica.2011.06.008
- PubMed:
- 21741349
- PubMed Central:
- PMC3237935
- https://doi.org/10.1016/j.actatropica.2011.06.008
- Author:
- Liwang Cui; Guiyun Yan; Jetsumon Sattabongkot; Yaming Cao; Bin Chen; Xiaoguang Chen; Qi Fan; Qiang Fang; Somchai Jongwutiwes; Daniel Parker; Jeeraphat Sirichaisinthop; Myat Phone Kyaw; Xin-zhuan Su; Henglin Yang; Zhaoqing Yang; Baomin Wang; Jianwei Xu; Bin Zheng; Daibin Zhong; Guofa Zhou
- Source:
- Acta tropica 2012 v.121 no.3 pp. 227-239
- ISSN:
- 0001-706X
- Subject:
- drug therapy; insecticides; Plasmodium vivax; malaria; insecticide resistance; forests; migratory behavior; multiple drug resistance; vector control; mosquito control; artemisinin; NADP-glucose-6-phosphate dehydrogenase; humans; Culicidae; control methods; resistance management; Plasmodium falciparum; epidemiology; World Health Organization; Thailand; Vietnam; Myanmar; China; Cambodia; Laos
- Abstract:
- ... The Greater Mekong Subregion (GMS), comprised of six countries including Cambodia, China's Yunnan Province, Lao PDR, Myanmar (Burma), Thailand and Vietnam, is one of the most threatening foci of malaria. Since the initiation of the WHO's Mekong Malaria Program a decade ago, malaria situation in the GMS has greatly improved, reflected in the continuous decline in annual malaria incidence and deaths ...
- DOI:
- 10.1016/j.actatropica.2011.02.016
- PubMed:
- 21382335
- PubMed Central:
- PMC3132579
- https://doi.org/10.1016/j.actatropica.2011.02.016
- Author:
- Ronald E. Hector; Alo Ray; Bo-Ruei Chen; Rebecca Shtofman; Kathleen L. Berkner; Kurt W. Runge
- Source:
- Chromosoma 2012 v.121 no.3 pp. 277-290
- ISSN:
- 0009-5915
- Subject:
- microsatellite repeats; telomeres; DNA; yeasts; Saccharomyces cerevisiae; binding proteins; phosphotransferases (kinases)
- Abstract:
- ... In many organisms, telomere DNA consists of simple sequence repeat tracts that are required to protect the chromosome end. In the yeast Saccharomyces cerevisiae, tract maintenance requires two checkpoint kinases of the ATM family, Tel1p and Mec1p. Previous work has shown that Tel1p is recruited to functional telomeres with shorter repeat tracts to promote telomerase-mediated repeat addition, but t ...
- DOI:
- 10.1007/s00412-011-0359-0
- PubMed:
- 22289863
- PubMed Central:
- PMC3350766
- https://doi.org/10.1007/s00412-011-0359-0
- Author:
- GAURAV SRIVASTAVA; R C MEHROTRA; HUGUES BAUER
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 747-754
- ISSN:
- 0253-4126
- Subject:
- cold; fossils; leaves; new species; paleobotany; rain; sediments; temperature; India
- Abstract:
- ... Two new palm leaf impressions, cf. Iguanura wallichiana and Palmacites makumensis sp. nov. are described from the Makum Coalfield, Tinsukia District, Assam. They belong to the Tikak Parbat Formation being considered as Late Oligocene (Chattian 28â23 Myr) in age. Their presence, along with the other known fossil records indicates that CMMT (cold month mean temperature) was not less than 18°C wi ...
- DOI:
- 10.1007/s12040-012-0179-5
- https://doi.org/10.1007/s12040-012-0179-5
- Author:
- ADITI MANDAL; ARIJIT RAY; MAYUKHEE DEBNATH; SANKAR PRASAD PAUL
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 793-812
- ISSN:
- 0253-4126
- Subject:
- zirconium; fractionation; geochemistry; Earth system science; tectonics; strontium; melting; plagioclase; barium; gneiss; India
- Abstract:
- ... Paharpur gabbroic intrusive is an arcuate body running eastâwest paralleling the foliation of Chhotanagpur Granite Gneiss which acts as country rock. The main gabbroic body is intruded by a number of dolerite dykes running northâsouth. It is composed of clinopyroxene (Wo48En40Fs12âWo51En40Fs09, mg no. 72â82), plagioclase (An52âAn90), hornblende (magnesian hornblende to ferro-tschermackit ...
- DOI:
- 10.1007/s12040-012-0195-5
- https://doi.org/10.1007/s12040-012-0195-5
- Author:
- Juan J. Lu; Dun Y. Tan; Jerry M. Baskin; Carol C. Baskin
- Source:
- Oikos 2012 v.121 no.3 pp. 357-366
- ISSN:
- 0030-1299
- Subject:
- Brassicaceae; annuals; asexual reproduction; cold; correlation; deserts; dormancy; fruits; gardens; habitats; herbivores; morphs; nutrient availability; phenotypic plasticity; seeds; soil nutrients; soil water; sowing; spring
- Abstract:
- ... Phenotypic plasticity can play an important role in colonization and survival of plants in an environmentally fluctuating habitat. The primary aim of this study was to determine the influence of level of abiotic (soil moisture and nutrient availability) and biotic (density and herbivory) factors on phenotypic plasticity in the number and proportional mass allocation to the heteromorphic dehiscent ...
- DOI:
- 10.1111/j.1600-0706.2011.19800.x
- https://doi.org/10.1111/j.1600-0706.2011.19800.x
- Author:
- Carolina PerezâHeydrich; Madan K. Oli; Mary B. Brown
- Source:
- Oikos 2012 v.121 no.3 pp. 377-388
- ISSN:
- 0030-1299
- Subject:
- Gopherus polyphemus; at-risk population; chronic diseases; hosts; infectious diseases; models; mortality; population dynamics; respiratory tract diseases; wildlife diseases; wildlife management
- Abstract:
- ... Despite a heightened interest regarding the role of infectious diseases in wildlife conservation, few studies have explicitly addressed the impacts of chronic, persistent diseases on longâterm host population dynamics. Using mycoplasmal upper respiratory tract disease (URTD) within natural gopher tortoise Gopherus polyphemus populations as a model system, we investigated the influence of chronic ...
- DOI:
- 10.1111/j.1600-0706.2011.19735.x
- https://doi.org/10.1111/j.1600-0706.2011.19735.x
- Author:
- POONAM JALAL; SUMIT K GHOSH
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 781-792
- ISSN:
- 0253-4126
- Subject:
- metamorphic rocks; Earth system science; tectonics; provenance; sandstone; Himalayan region
- Abstract:
- ... An understanding about lithology, tectonics and unroofing history of provenance is mostly drawn from the compositional and textural parameters of the detrital fragments. We here use different metamorphic ranks (Rm) and metamorphic index (MI) values of rock fragments present in Late Neogene Siwalik sandstone of the Ramganga sub-basin to infer the provenance history. The study indicates maximum cont ...
- DOI:
- 10.1007/s12040-012-0189-3
- https://doi.org/10.1007/s12040-012-0189-3
- Author:
- Raul Chuquiyauri; Maribel Paredes; Pablo Peñataro; Sonia Torres; Silvia Marin; Alexander Tenorio; Kimberly C. Brouwer; Shira Abeles; Alejandro Llanos-Cuentas; Robert H. Gilman; Margaret Kosek; Joseph M. Vinetz
- Source:
- Acta tropica 2012 v.121 no.3 pp. 292-302
- ISSN:
- 0001-706X
- Subject:
- parasites; sociodemographic characteristics; insecticides; Plasmodium vivax; chemoprevention; malaria; adults; people; humans; morbidity; farming systems; risk factors; travel; logging; households; regression analysis; villages; death; Amazonia; Peru
- Abstract:
- ... This analysis presents a comprehensive description of malaria burden and risk factors in Peruvian Amazon villages where malaria transmission is hypoendemic. More than 9000 subjects were studied in contrasting village settings within the Department of Loreto, Peru, where most malaria occurs in the country. Plasmodium vivax is responsible for more than 75% of malaria cases; severe disease from any f ...
- DOI:
- 10.1016/j.actatropica.2011.11.003
- PubMed:
- 22100446
- PubMed Central:
- PMC3294046
- https://doi.org/10.1016/j.actatropica.2011.11.003
- Author:
- Daniel E. Spooner; Caryn C. Vaughn
- Source:
- Oikos 2012 v.121 no.3 pp. 403-416
- ISSN:
- 0030-1299
- Subject:
- anthropogenic activities; ecosystems; mussels; oxygen consumption; physiological response; population dynamics; primary productivity; species diversity; temperature profiles
- Abstract:
- ... We examined the effect of species identity on ecosystem function across an environmental gradient by manipulating the relative dominance of three freshwater mussel species with divergent thermal preferences in mesocosms across a temperature gradient (15, 25, 35°C). We measured a suite of individual performance (oxygen consumption, nutrient excretion) and ecosystem response metrics (community, wate ...
- DOI:
- 10.1111/j.1600-0706.2011.19380.x
- https://doi.org/10.1111/j.1600-0706.2011.19380.x
- Author:
- P SENGUPTA
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 837-846
- ISSN:
- 0253-4126
- Subject:
- Earth system science; earthquakes; models; hazard characterization
- Abstract:
- ... The Narmada South Fault in the Indian peninsular shield region is associated with moderate-to-strong earthquakes. The prevailing hazard evidenced by the earthquake-related fatalities in the region imparts significance to the investigations of the seismogenic environment. In the present study, the prevailing seismotectonic conditions specified by parameters associated with source, path and site con ...
- DOI:
- 10.1007/s12040-012-0187-5
- https://doi.org/10.1007/s12040-012-0187-5
- Author:
- Robert B. Allen; Norman W. H. Mason; Sarah J. Richardson; Kevin H. Platt
- Source:
- Oikos 2012 v.121 no.3 pp. 367-376
- ISSN:
- 0030-1299
- Subject:
- Nothofagus solandri; montane forests; periodicity; seeds; New Zealand
- Abstract:
- ... Distinctive inter‐annual patterns of tree seed production can include spatial synchronicity, periodicity, and high variability among individuals within a population. Synchronicity and high variability are now commonly used to define mast seeding, with ‘strict’ mast seeding further distinguished by annual seed production that is either often large or nil and thus bimodal. Here we test for synchroni ...
- DOI:
- 10.1111/j.1600-0706.2011.19306.x
- https://doi.org/10.1111/j.1600-0706.2011.19306.x
- Author:
- Daniel J. Leary; Jason M. K. Rip; Owen L. Petchey
- Source:
- Oikos 2012 v.121 no.3 pp. 327-336
- ISSN:
- 0030-1299
- Subject:
- interspecific variation; community structure; microbial communities; niches; light intensity; environmental factors; species diversity; environmental impact; biomass; covariance; Paramecium; Bacillariophyta
- Abstract:
- ... Understanding how environmental fluctuations affect the stability of populations and communities is complex, for example, because direct effects of environmental variability on populations may be modified and propagated across communities by species interactions. One way to explore and further understand these complexities is via a factorial manipulation of community composition and environmental ...
- DOI:
- 10.1111/j.1600-0706.2011.19523.x
- https://doi.org/10.1111/j.1600-0706.2011.19523.x
- Author:
- Robert C. Szava‐Kovats; Martin Zobel; Meelis Pärtel
- Source:
- Oikos 2012 v.121 no.3 pp. 321-326
- ISSN:
- 0030-1299
- Subject:
- linear models; regression analysis; species diversity
- Abstract:
- ... Despite considerable criticism in recent years, the use of local (SL) and regional species richness (SR) plots has a long tradition to test for community saturation. The traditional approach has been to compare linear and polynomial regression models of untransformed measures of SL and SR with a statistically significant linear or polynomial model indicating unsaturated and saturated communities, ...
- DOI:
- 10.1111/j.1600-0706.2011.19603.x
- https://doi.org/10.1111/j.1600-0706.2011.19603.x
- Author:
- A CHATTERJEE; D SHANKAR; S S C SHENOI; G V REDDY; G S MICHAEL; M RAVICHANDRAN; V V GOPALKRISHNA; E P RAMA RAO; T V S UDAYA BHASKAR; V N SANJEEVAN
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 559-593
- ISSN:
- 0253-4126
- Subject:
- Earth system science; salinity; climatology; temperature; Bay of Bengal; Indian Ocean
- Abstract:
- ... The most used temperature and salinity climatology for the world ocean, including the Indian Ocean, is the World Ocean Atlas (WOA) (Antonov et al 2006, 2010; Locarnini et al 2006, 2010) because of the vast amount of data used in its preparation. The WOA climatology does not, however, include all the available hydrographic data from the Indian Exclusive Economic Zone (EEZ), leading to the potential ...
- DOI:
- 10.1007/s12040-012-0191-9
- https://doi.org/10.1007/s12040-012-0191-9
- Author:
- Simon P. Hart; Dustin J. Marshall
- Source:
- Oikos 2012 v.121 no.3 pp. 396-402
- ISSN:
- 0030-1299
- Subject:
- colonizing ability; interspecific competition; invasive species; natural resource management
- Abstract:
- ... Invaders into established communities must overcome low resource availability. To establish, invaders must either appropriate resources from existing individuals through interference competition or efficiently use the small amount of resource that remains. Although both strategies may be important, they are rarely considered together and, in particular, resource‐use efficiency is often ignored in ...
- DOI:
- 10.1111/j.1600-0706.2011.19557.x
- https://doi.org/10.1111/j.1600-0706.2011.19557.x
- Author:
- Sarah K. Volkman; Daouda Ndiaye; Mahamadou Diakite; Ousmane A. Koita; Davis Nwakanma; Rachel F. Daniels; Daniel J. Park; Daniel E. Neafsey; Marc A.T. Muskavitch; Donald J. Krogstad; Pardis C. Sabeti; Daniel L. Hartl; Dyann F. Wirth
- Source:
- Acta tropica 2012 v.121 no.3 pp. 324-332
- ISSN:
- 0001-706X
- Subject:
- Culicidae; National Institutes of Health; Plasmodium falciparum; Plasmodium vivax; diagnostic techniques; genomics; humans; insecticides; malaria; nucleotide sequences; parasites; population genetics; vaccines
- Abstract:
- ... Success of the global research agenda toward eradication of malaria will depend on development of new tools, including drugs, vaccines, insecticides and diagnostics. Genomic information, now available for the malaria parasites, their mosquito vectors, and human host, can be leveraged to both develop these tools and monitor their effectiveness. Although knowledge of genomic sequences for the malari ...
- DOI:
- 10.1016/j.actatropica.2011.12.002
- PubMed:
- 22182668
- PubMed Central:
- PMC3294120
- https://doi.org/10.1016/j.actatropica.2011.12.002
- Author:
- Liwang Cui; Guiyun Yan; Jetsumon Sattabongkot; Bin Chen; Yaming Cao; Qi Fan; Daniel Parker; Jeeraphat Sirichaisinthop; Xin-zhuan Su; Henglin Yang; Zhaoqing Yang; Baomin Wang; Guofa Zhou
- Source:
- Acta tropica 2012 v.121 no.3 pp. 240-245
- ISSN:
- 0001-706X
- Subject:
- Plasmodium falciparum; artemisinin; disease surveillance; drug resistance; habitats; infrastructure; malaria; parasites; research institutions; scientists; vectorial capacity; United States
- Abstract:
- ... Despite significant improvement in the malaria situation of the Greater Mekong Subregion (GMS), malaria control for the region continues to face a multitude of challenges. The extremely patchy malaria distribution, especially along international borders, makes disease surveillance and targeted control difficult. The vector systems are also diverse with dramatic differences in habitat ecology, biti ...
- DOI:
- 10.1016/j.actatropica.2011.04.006
- PubMed:
- 21515238
- PubMed Central:
- PMC3155744
- https://doi.org/10.1016/j.actatropica.2011.04.006
- Author:
- Mikhail V. Kozlov; Voitĕch Lanta; Vitali E. Zverev; Elena L. Zvereva
- Source:
- Oikos 2012 v.121 no.3 pp. 428-434
- ISSN:
- 0030-1299
- Subject:
- Betula pubescens; biomass; buds; compensatory growth; forest ecosystems; forests; herbivores; leaf area; leafminers; leafrollers; leaves; mining; plant adaptation; shoots; summer; trees
- Abstract:
- ... Recent findings suggest that impacts of endemic herbivory on forest ecosystems over the long term may exceed impacts of herbivore outbreaks. However, responses of trees to minor and local damage imposed by small arthropod herbivores, especially by those mining or skeletonising individual leaves, remain poorly understood. We studied the delayed effects of injuries by several leafmining and leafroll ...
- DOI:
- 10.1111/j.1600-0706.2011.19625.x
- https://doi.org/10.1111/j.1600-0706.2011.19625.x
- Author:
- D LAL; P CHAUHAN; R D SHAH; S BHATTACHARYA; AJAI; A S KIRAN KUMAR
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 847-853
- ISSN:
- 0253-4126
- Subject:
- Earth system science; absorption; iron; models; magnesium; minerals; reflectance; India
- Abstract:
- ... Spectral reflectance data derived from Moon Mineralogy Mapper (M3) onboard Indiaâs Chandrayaan-1 has revealed Fe bearing Mg-spinel-rich lithology on central peaks of the crater Theophilus. These newly identified Fe bearing Mg-spinel-rich rock types are defined by their strong 2-μm absorption and lack of 1-μm absorptions in spectral reflectance response. Such lithology has been reported previou ...
- DOI:
- 10.1007/s12040-012-0193-7
- https://doi.org/10.1007/s12040-012-0193-7
- Author:
- SHAKIL AHMAD ROMSHOO; SHAKEEL AHMAD BHAT; IRFAN RASHID
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 659-686
- ISSN:
- 0253-4126
- Subject:
- sediment yield; morphometry; Earth system science; hydrograph; geomorphology; watersheds; rain; land cover; Soil and Water Assessment Tool model; runoff; vegetation
- Abstract:
- ... Five watersheds (W1, W2, W3, W4 and W5) in the upper Indus basin were chosen for detailed studies to understand the influences of geomorphology, drainage basin morphometry and vegetation patterns on hydrology. From the morphometric analysis, it is evident that the hydrologic response of these watersheds changes significantly in response to spatial variations in morphometric parameters. Results ind ...
- DOI:
- 10.1007/s12040-012-0192-8
- https://doi.org/10.1007/s12040-012-0192-8
- Author:
- Walther H. Wernsdorfer
- Source:
- Acta tropica 2012 v.121 no.3 pp. 158-165
- ISSN:
- 0001-706X
- Subject:
- arthropods; breeding sites; climate change; control methods; epidemiology; hosts; humans; insecticides; malaria; parasites; pathogens; vector control
- Abstract:
- ... In the absence of secular climatic changes, the global challenges of changing epidemiological patterns of malaria have to be induced by man, i.e. by a disturbance of the equilibrium between man, vector and the parasite in an environment conducive to the natural transmission of the pathogen. There are many ways of attempting such a disturbance, from the use of personal protection to the use of diag ...
- DOI:
- 10.1016/j.actatropica.2011.06.014
- https://doi.org/10.1016/j.actatropica.2011.06.014
- Author:
- Seydou O. Doumbia; Daouda Ndiaye; Ousmane A. Koita; Mahamadou Diakité; Davis Nwakanma; Mamadou Coulibaly; Sekou F. Traoré; Joseph Keating; Danny A. Milner Jr.; Jean-Louis Ndiaye; Papa Diogoye Sene; Ambroise Ahouidi; Tandakha N. Dieye; Oumar Gaye; Joseph Okebe; Serign J. Ceesay; Alfred Ngwa; Eniyou C. Oriero; Lassana Konaté; Ngayo Sy; Musa Jawara; Ousmane Faye; Moussa Kéita; Moussa Cissé; Nafomon Sogoba; Belco Poudiougou; Sory Diawara; Lansana Sangaré; Tinzana Coulibaly; Ibrahima Seck; Ismaela Abubakar; Jules Gomis; Frances J. Mather; Aliou Sissako; Ayouba Diarra; Balla Kandeh; Christopher Whalen; Brian Moyer; Obinna Nnedu; Oumar Thiero; Amy K. Bei; Rachel Daniels; Kazutoyo Miura; Carole A. Long; Rick M. Fairhurst; Manoj Duraisingh; Marc A.T. Muskavitch; Umberto D’Alessandro; David J. Conway; Sarah K. Volkman; Clarissa Valim; Dyann F. Wirth; Donald J. Krogstad
- Source:
- Acta tropica 2012 v.121 no.3 pp. 175-183
- ISSN:
- 0001-706X
- Subject:
- adults; blood; children; cities; diagnostic techniques; immune response; malaria; monitoring; morbidity; mortality; parasitemia; rural areas; urbanization; Western Africa
- Abstract:
- ... With the paradigm shift from the reduction of morbidity and mortality to the interruption of transmission, the focus of malaria control broadens from symptomatic infections in children ≤5 years of age to include asymptomatic infections in older children and adults. In addition, as control efforts intensify and the number of interventions increases, there will be decreases in prevalence, incidence ...
- DOI:
- 10.1016/j.actatropica.2011.11.009
- PubMed:
- 22142790
- PubMed Central:
- PMC3294075
- https://doi.org/10.1016/j.actatropica.2011.11.009
- Author:
- V PURNACHANDRA RAO; A ANIL KUMAR; S W A NAQVI; ALLAN R CHIVAS; B SEKAR; PRATIMA M KESSARKAR
- Source:
- Journal of earth system science 2012 v.121 no.3 pp. 769-779
- ISSN:
- 0253-4126
- Subject:
- aragonite; cement; climate change; freshwater; gravity; isotopes; sea level; sediments; strontium; India
- Abstract:
- ... Two sediment types were found in five gravity cores collected from water depths between 56Â m and 121Â m along the northwestern continental margin of India: lime muds were abundant in the lower section while siliciclastic sediments dominated the upper section. Lime mud-dominated sediments in shelf cores contained 60%â75% carbonate, 0.3%â0.6% Sr and terrigenous minerals, whereas those at the sh ...
- DOI:
- 10.1007/s12040-012-0188-4
- https://doi.org/10.1007/s12040-012-0188-4
- Author:
- Sungano Mharakurwa; Philip E. Thuma; Douglas E. Norris; Modest Mulenga; Victor Chalwe; James Chipeta; Shungu Munyati; Susan Mutambu; Peter R. Mason; for the Southern Africa ICEMR Team
- Source:
- Acta tropica 2012 v.121 no.3 pp. 202-206
- ISSN:
- 0001-706X
- Subject:
- epidemiology; genomics; malaria; parasites; Zambia; Zimbabwe
- Abstract:
- ... The burden of malaria has decreased dramatically within the past several years in parts of sub-Saharan Africa, following the scale-up of interventions supported by the Roll Back Malaria Partnership, the President's Malaria Initiative and other partners. It is important to appreciate that the reductions in malaria have not been uniform between and within countries, with some areas experiencing resu ...
- DOI:
- 10.1016/j.actatropica.2011.06.012
- PubMed:
- 21756864
- PubMed Central:
- PMC3214248
- https://doi.org/10.1016/j.actatropica.2011.06.012
- Author:
- Aparup Das; Anupkumar R. Anvikar; Lauren J. Cator; Ramesh C. Dhiman; Alex Eapen; Neelima Mishra; Bhupinder N. Nagpal; Nutan Nanda; Kamaraju Raghavendra; Andrew F. Read; Surya K. Sharma; Om P. Singh; Vineeta Singh; Photini Sinnis; Harish C. Srivastava; Steven A. Sullivan; Patrick L. Sutton; Matthew B. Thomas; Jane M. Carlton; Neena Valecha
- Source:
- Acta tropica 2012 v.121 no.3 pp. 267-273
- ISSN:
- 0001-706X
- Subject:
- Anopheles; National Institutes of Health; Plasmodium; climate change; disease control; drug resistance; epidemiology; experts; genomics; hypersensitivity; infectious diseases; insecticide resistance; malaria; mortality; parasites; public health; scientists; India; South East Asia; United States
- Abstract:
- ... Malaria is a major public health problem in India and one which contributes significantly to the overall malaria burden in Southeast Asia. The National Vector Borne Disease Control Program of India reported ∼1.6 million cases and ∼1100 malaria deaths in 2009. Some experts argue that this is a serious underestimation and that the actual number of malaria cases per year is likely between 9 and 50 ti ...
- DOI:
- 10.1016/j.actatropica.2011.11.008
- PubMed:
- 22142788
- PubMed Central:
- PMC3294179
- https://doi.org/10.1016/j.actatropica.2011.11.008
- Author:
- Ashwani Kumar; Laura Chery; Chinmoy Biswas; Nagesh Dubhashi; Prafulla Dutta; Virendra Kumar Dua; Mridula Kacchap; Sanjeeb Kakati; Anar Khandeparkar; Dalip Kour; Satish N. Mahajan; Ardhendu Maji; Partha Majumder; Jagadish Mohanta; Pradyumna K. Mohapatra; Krishnamoorthy Narayanasamy; Krishnangshu Roy; Jayanthi Shastri; Neena Valecha; Rana Vikash; Reena Wani; John White; Pradipsinh K. Rathod
- Source:
- Acta tropica 2012 v.121 no.3 pp. 246-255
- ISSN:
- 0001-706X
- Subject:
- National Institutes of Health; Plasmodium falciparum; Plasmodium vivax; death; disease control; disease outbreaks; disease prevalence; drug resistance; early diagnosis; evolution; genetic variation; health care workers; health services; humans; malaria; parasites; India; Myanmar; United States
- Abstract:
- ... The “Malaria Evolution in South Asia” (MESA) program project is an International Center of Excellence for Malaria Research (ICEMR) sponsored by the US National Institutes of Health. This US–India collaborative program will study the origin of genetic diversity of malaria parasites and their selection on the Indian subcontinent. This knowledge should contribute to a better understanding of unexpect ...
- DOI:
- 10.1016/j.actatropica.2012.01.004
- PubMed:
- 22248528
- PubMed Central:
- PMC3808995
- https://doi.org/10.1016/j.actatropica.2012.01.004
- Author:
- Ambrose Talisuna; Seraphine Adibaku; Grant Dorsey; Moses R. Kamya; Philip J. Rosenthal
- Source:
- Acta tropica 2012 v.121 no.3 pp. 196-201
- ISSN:
- 0001-706X
- Subject:
- experts; malaria; public health; Uganda
- Abstract:
- ... In the recent past there have been several reports of successes in malaria control, leading some public health experts to conclude that Africa is witnessing an epidemiological transition, from an era of failed malaria control to progression from successful control to elimination. Successes in control have been attributed to increased international donor support leading to increased intervention co ...
- DOI:
- 10.1016/j.actatropica.2011.06.013
- PubMed:
- 21756863
- PubMed Central:
- PMC3439212
- https://doi.org/10.1016/j.actatropica.2011.06.013