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https://www.readbyqxmd.com/read/28218791/development-and-validation-of-the-first-ssr-markers-for-mimosa-scabrella-benth
#1
F A Saiki, A P Bernardi, M S Reis, H Faoro, E M Souza, F O Pedrosa, A Mantovani, A F Guidolin
Mimosa scabrella Benth., popularly known as ''bracatinga'', is a pioneer and endemic species of Brazil, occurring in Mixed Ombrophilous Forest associated with Brazilian Atlantic Rainforest biomes. It is a fast-growing tree of the Fabaceae family that facilitates the dynamics of ecological succession. SSR development, when there is no genome sequence, is time and labor intensive and there are no molecular markers for M. scabrella. We developed and validated the first microsatellite markers for this tetraploid species, evaluating mother trees and progenies...
February 16, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28213544/isolation-and-characterization-of-a-unique-strain-of-rickettsia-parkeri-associated-with-the-hard-tick-dermacentor-parumapertus-neumann-in-the-western-united-states
#2
Christopher D Paddock, Michelle E J Allerdice, Sandor E Karpathy, William L Nicholson, Michael L Levin, Travis C Smith, Tom Becker, Robert J Delph, Robert N Knight, Jana M Ritter, Jeanine H Sanders, Jerome Goddard
In 1953, investigators at the Rocky Mountain Laboratories in Hamilton, Montana, described the isolation of a spotted fever group Rickettsia (SFGR) species from Dermacentor parumapertus collected from black-tailed jackrabbits (Lepus californicus) in northern Nevada. Several decades later, investigators characterized this SFGR by using mouse serotyping methods and determined that it represented a distinct rickettsial serotype, related closely to Rickettsia parkeri; nonetheless, the parumapertus agent was not further characterized or studied...
February 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28199442/phylogeographic-history-of-south-american-populations-of-the-silky-anteater-cyclopes-didactylus-pilosa-cyclopedidae
#3
Raphael Teodoro Franciscani Coimbra, Flávia Regina Miranda, Camila Clozato Lara, Marco Antônio Alves Schetino, Fabrício Rodrigues Dos Santos
Cyclopes didactylus, commonly called silky anteater, is the smallest and least studied of the anteaters. It is an arboreal species occurring in rainforests, ranging from southern Mexico to Central and South America, with an apparently disjoint distribution between Amazon and Atlantic rainforests in Brazil. Although seven subspecies are recognized, little is known about its geographical variation. Thus, to evaluate the population dynamics and evolutionary history of the South American silky anteater, we analyzed 1542 bp sequences of the mitochondrial control region (CR), COI and Cyt-b genes of 32 individuals...
February 13, 2017: Genetics and Molecular Biology
https://www.readbyqxmd.com/read/28187659/a-new-tropical-montane-firefly-genus-and-species-active-during-winter-and-endemic-to-the-southeastern-atlantic-rainforest-coleoptera-lampyridae
#4
Luiz Felipe Lima DA Silveira, José Ricardo Miras Mermudes
Here we describe Araucariocladus hiems gen. et sp. nov. (Lampyridae: Amydetinae), a firefly species endemic to high montane forests, and occurring during June, a relatively cool and dry month in the Southeastern Atlantic Rainforest of Brazil. We tentatively place it in Psilocladina McDermott, and discuss the limitations of its classification. We also provide illustrations of key structural features of the new taxa and discuss its affinities.
January 17, 2017: Zootaxa
https://www.readbyqxmd.com/read/28187652/new-species-and-records-of-i-zavreliella-i-kieffer-1920-from-neotropical-region-diptera-chironomidae
#5
Lívia Maria Fusari, Luiz Carlos Pinho, Carlos José Einicker Lamas
A new species of Zavreliella Kieffer, Zavreliella kambeba sp. n., is described, based on male adults collected in the Amazon rainforest, Brazil. Further seven Zavreliella species are recorded for new localities in Brazil, with the first Neotropical record of Z. marmorata (van der Wulp). The genus Zavreliella is now composed of 15 species, of which adult males are reviewed in a key to their identification.
January 19, 2017: Zootaxa
https://www.readbyqxmd.com/read/28187611/on-the-poorly-known-haplogynae-spiders-of-the-genus-i-ochyrocera-i-simon%C3%A2-araneae-ochyroceratidae-from-mexico-description-of-two-new-species-with-an-updated-identification-key-for-mexican-species
#6
Alejandro Valdez-Mondragón
Two new species of the spider genus Ochyrocera Simon 1891 are described from Mexico. Ochyrocera jarocha new species was collected under rotten trunks and hollow trunks in a tropical rainforest, in San Martin Volcano, Veracruz, Mexico. Ochyrocera pojoj new species was collected in a mixed forest, under rotten trunks, in La Trinitaria, Chiapas, Mexico, which represents the third species described from the state of Chiapas. With the description of the two new species herein, six species of Ochyrocera are recorded from Mexico...
January 26, 2017: Zootaxa
https://www.readbyqxmd.com/read/28187551/systematics-of-a-small-i-gehyra-i-squamata-gekkonidae-from-the-einasleigh-uplands-queensland-description-of-a-new-range-restricted-species
#7
Gayleen Bourke, Renae C Pratt, Eric Vanderduys, Craig Moritz
The tropical savannah landscapes of Australia's north, though previously overshadowed by the biodiverse rainforests of the Wet Tropics, are themselves now attracting interest for their biological significance and uniqueness. The Einasleigh Uplands region of north-east Queensland is home to a diverse group of mammals and reptiles and was previously recognised for its importance in shaping speciation in birds. Here we add a small saxicoline gecko to a growing list of recently described reptiles that are endemic to this region...
February 9, 2017: Zootaxa
https://www.readbyqxmd.com/read/28182314/exotic-weeds-and-fluctuating-microclimate-can-constrain-native-plant-regeneration-in-urban-forest-restoration
#8
K J Wallace, Daniel C Laughlin, Bruce D Clarkson
Restoring forest structure and composition is an important component of urban land management, but we lack clear understanding of the mechanisms driving restoration success. Here we studied two indicators of restoration success in temperate rainforests: native tree regeneration and epiphyte colonization. We hypothesized that ecosystem properties such as forest canopy openness, abundance of exotic herbaceous weeds, and the microclimate directly affect the density and diversity of native tree seedlings and epiphytes...
February 9, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28181524/lack-of-phylogenetic-signals-within-environmental-niches-of-tropical-tree-species-across-life-stages
#9
Caicai Zhang, Jie Yang, Liqing Sha, Xiuqin Ci, Jie Li, Min Cao, Calum Brown, Nathan G Swenson, Luxiang Lin
The lasting imprint of phylogenetic history on current day ecological patterns has long intrigued biologists. Over the past decade ecologists have increasingly sought to quantify phylogenetic signals in environmental niche preferences and, especially, traits to help uncover the mechanisms driving plant community assembly. However, relatively little is known about how phylogenetic patterns in environmental niches and traits compare, leaving significant uncertainty about the ecological implications of trait-based analyses...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28169507/predictive-factors-for-fatal-tick-borne-spotted-fever-in-brazil
#10
S V de Oliveira, M C A Willemann, G S Gazeta, R N Angerami, R Gurgel-Gonçalves
In Brazil, two pathogenic Rickettsia species have been identified causing tick-borne spotted fever (SF). The aetiological agent Rickettsia rickettsii causes serious illness, particularly in the south-eastern region of the country. Moreover, the Rickettsia sp. strain Atlantic Rainforest cause milder clinical manifestations in south-eastern, south and north-east regions. This study has sought to analyse predictive factors for fatal SF. A case-control study was performed using disease notification records in Brazil...
February 7, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28167791/impact-of-pre-columbian-geoglyph-builders-on-amazonian-forests
#11
Jennifer Watling, José Iriarte, Francis E Mayle, Denise Schaan, Luiz C R Pessenda, Neil J Loader, F Alayne Street-Perrott, Ruth E Dickau, Antonia Damasceno, Alceu Ranzi
Over 450 pre-Columbian (pre-AD 1492) geometric ditched enclosures ("geoglyphs") occupy ∼13,000 km(2) of Acre state, Brazil, representing a key discovery of Amazonian archaeology. These huge earthworks were concealed for centuries under terra firme (upland interfluvial) rainforest, directly challenging the "pristine" status of this ecosystem and its perceived vulnerability to human impacts. We reconstruct the environmental context of geoglyph construction and the nature, extent, and legacy of associated human impacts...
February 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28160850/in-vitro-and-in-vivo-antimalarial-potential-of-oleoresin-obtained-from-copaifera-reticulata-ducke-fabaceae-in-the-brazilian-amazon-rainforest
#12
Giovana A G de Souza, Nazaré C da Silva, Juarez de Souza, Karen R M de Oliveira, Amanda L da Fonseca, Leopoldo C Baratto, Elaine C P de Oliveira, Fernando de Pilla Varotti, Waldiney P Moraes
BACKGROUND: In view of the wide variety of the flora of the Amazon region, many plants have been studied in the search for new antimalarial agents. Copaifera reticulata is a tree distributed throughout the Amazon region which contains an oleoresin rich in sesquiterpenes and diterpenes with β-caryophyllene as the major compound. The oleoresin has demonstrated antiparasitic activity against Leishmania amazonensis. Because of this previously reported activity, this oleoresin would be expected to also have antimalarial activity...
January 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/28144910/the-calibrated-phylogeny-of-the-drosophila-fasciola-subgroup-d-repleta-group-wasserman-indicates-neogene-diversification-of-its-internal-branches
#13
F F Franco, E C C Silva, D Y Barrios-Leal, F M Sene, M H Manfrin
The species of the Drosophila fasciola subgroup Wasserman represent the dominant section of the Drosophila repleta group Wasserman in the American rainforests and have a broad geographical distribution in the New World. However, despite of its wide range, the D. fasciola subgroup is one of the most overlooked D. repleta subgroups. Here, we report a molecular phylogenetic analysis focused on the D. fasciola subgroup using two mitochondrial [cytochrome oxidase subunit I (COI), cytochrome oxidase subunit II (COII)] and two nuclear [elongation factor-1alpha F1 (EF-alphaF1) and transformer (tra)] genes...
January 31, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28133389/the-impact-of-logging-roads-on-dung-beetle-assemblages-in-a-tropical-rainforest-reserve
#14
Felicity A Edwards, Jessica Finan, Lucy K Graham, Trond H Larsen, David S Wilcove, Wayne W Hsu, V K Chey, Keith C Hamer
The demand for timber products is facilitating the degradation and opening up of large areas of intact habitats rich in biodiversity. Logging creates an extensive network of access roads within the forest, yet these are commonly ignored or excluded when assessing impacts of logging on forest biodiversity. Here we determine the impact of these roads on the overall condition of selectively logged forests in Borneo, Southeast Asia. Focusing on dung beetles along > 40 km logging roads we determine: (i) the magnitude and extent of edge effects alongside logging roads; (ii) whether vegetation characteristics can explain patterns in dung beetle communities, and; (iii) how the inclusion of road edge forest impacts dung beetle assemblages within the overall logged landscape...
January 2017: Biological Conservation
https://www.readbyqxmd.com/read/28129759/demography-maternal-health-and-the-epidemiology-of-malaria-and-other-major-infectious-diseases-in-the-rural-department-tsamba-magotsi-ngounie-province-in-central-african-gabon
#15
R Zoleko Manego, G Mombo-Ngoma, M Witte, J Held, M Gmeiner, T Gebru, B Tazemda, J Mischlinger, M Groger, B Lell, A A Adegnika, S T Agnandji, P G Kremsner, B Mordmüller, M Ramharter, P B Matsiegui
BACKGROUND: Sub-Saharan Africa is undergoing an epidemiological transition from a predominance of infectious diseases to non-communicable and lifestyle related conditions. However, the pace of this transition and the pattern of disease epidemiology are uneven between affluent urban and rural poor populations. To address this question for a remote rural region located in the central African rainforest region of Gabon, this study was conducted to assess reasons for health care attendance and to characterize the epidemiology of malaria and other major infectious diseases for the department of Tsamba Magotsi...
January 28, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28122504/resolved-phylogeny-and-biogeography-of-the-root-pathogen-armillaria-and-its-gasteroid-relative-guyanagaster
#16
Rachel A Koch, Andrew W Wilson, Olivier Séné, Terry W Henkel, M Catherine Aime
BACKGROUND: Armillaria is a globally distributed mushroom-forming genus composed primarily of plant pathogens. Species in this genus are prolific producers of rhizomorphs, or vegetative structures, which, when found, are often associated with infection. Because of their importance as plant pathogens, understanding the evolutionary origins of this genus and how it gained a worldwide distribution is of interest. The first gasteroid fungus with close affinities to Armillaria-Guyanagaster necrorhizus-was described from the Neotropical rainforests of Guyana...
January 25, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28121865/sanativo-wound-healing-product-does-not-accelerate-reepithelialization-in-a-mouse-cutaneous-wound-healing-model
#17
Clement D Marshall, Michael S Hu, Tripp Leavitt, Leandra A Barnes, Alexander T M Cheung, Samir Malhotra, H Peter Lorenz, Scott L Delp, Stephen R Quake, Michael T Longaker
BACKGROUND: Sanativo is an over-the-counter Brazilian product derived from Amazon rainforest plant extract that is purported to improve the healing of skin wounds. Two experimental studies have shown accelerated closure of nonsplinted excisional wounds in rat models. However, these models allow for significant contraction of the wound and do not approximate healing in the tight skin of humans. METHODS: Full-thickness excisional wounds were created on the dorsal skin of mice and were splinted with silicone rings, a model that forces the wound to heal by granulation and reepithelialization...
February 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28120928/a-deforestation-induced-tipping-point-for-the-south-american-monsoon-system
#18
Niklas Boers, Norbert Marwan, Henrique M J Barbosa, Jürgen Kurths
The Amazon rainforest has been proposed as a tipping element of the earth system, with the possibility of a dieback of the entire ecosystem due to deforestation only of parts of the rainforest. Possible physical mechanisms behind such a transition are still subject to ongoing debates. Here, we use a specifically designed model to analyse the nonlinear couplings between the Amazon rainforest and the atmospheric moisture transport from the Atlantic to the South American continent. These couplings are associated with a westward cascade of precipitation and evapotranspiration across the Amazon...
January 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28116549/run-hide-or-fight-anti-predation-strategies-in-endangered-red-nosed-cuxi%C3%A3%C2%BA-chiropotes-albinasus-pitheciidae-in-southeastern-amazonia
#19
Adrian A Barnett, João M Silla, Tadeu de Oliveira, Sarah A Boyle, Bruna M Bezerra, Wilson R Spironello, Eleonore Z F Setz, Rafaela F Soares da Silva, Samara de Albuquerque Teixeira, Lucy M Todd, Liliam P Pinto
Although primate predation is rarely observed, a series of primate anti-predation strategies have been described. Energetic costs of such strategies can vary from high-cost mobbing, via less costly alarm calling, to low-cost furtive concealment. Here we report the anti-predation strategies of red-nosed cuxiú, Chiropotes albinasus, based on direct observations from four study sites in southeastern Brazilian Amazonia. Over a collective period of 1255 fieldwork hours, we observed nine direct interactions between raptors (all potential predators) and red-nosed cuxiús...
January 23, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28107517/high-emigration-propensity-and-low-mortality-on-transfer-drives-female-biased-dispersal-of-pyriglena-leucoptera-in-fragmented-landscapes
#20
Marcelo Awade, Carlos Candia-Gallardo, Cintia Cornelius, Jean Paul Metzger
Dispersal is a biological process performed in three stages: emigration, transfer and immigration. Intra-specific variation on dispersal behavior, such as sex-bias, is very common in nature, particularly in birds and mammals. However, dispersal is difficult to measure in the field and many hypotheses concerning the causes of sex-biased dispersal remain without empirical confirmation. An important limitation of most empirical studies is that inferences about sex-biased dispersal are based only on emigration proneness or immigration success data...
2017: PloS One
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