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Runhua Lei, Cynthia L Frasier, Melissa T R Hawkins, Shannon E Engberg, Carolyn A Bailey, Steig E Johnson, Adam T McLain, Colin P Groves, George H Perry, Stephen D Nash, Russell A Mittermeier, Edward E Louis
The family Lepilemuridae includes 26 species of sportive lemurs, most of which were recently described. The cryptic morphological differences confounded taxonomy until recent molecular studies; however, some species' boundaries remain uncertain. To better understand the genus Lepilemur, we analyzed 35 complete mitochondrial genomes representing all recognized 26 sportive lemur taxa and estimated divergence dates. With our dataset we recovered 25 reciprocally monophyletic lineages, as well as an admixed clade containing Lepilemur mittermeieri and Lepilemur dorsalis Using modern distribution data, an ancestral area reconstruction and an ecological vicariance analysis were performed to trace the history of diversification and to test biogeographic hypotheses...
October 3, 2016: Journal of Heredity
Rosalind E Howes, Sedera Aurélien Mioramalala, Brune Ramiranirina, Thierry Franchard, Andry Joeliarijaona Rakotorahalahy, Donal Bisanzio, Peter W Gething, Peter A Zimmerman, Arsène Ratsimbasoa
BACKGROUND: Malaria remains a major public health problem in Madagascar. Widespread scale-up of intervention coverage has led to substantial reductions in case numbers since 2000. However, political instability since 2009 has disrupted these efforts, and a resurgence of malaria has since followed. This paper re-visits the sub-national stratification of malaria transmission across Madagascar to propose a contemporary update, and evaluates the reported routine case data reported at this sub-national scale...
October 18, 2016: Malaria Journal
Michelle White, Dennis Alcorn, Kirsten Randall, Stephanie Duncan, Heather Klassen, Mark Shrime
BACKGROUND: Billions of people worldwide lack access to safe affordable surgery. Surgical missions and non-governmental organisations (NGO) are vital in meeting this need, but long-term outcomes are rarely reported. Mercy Ships is a surgical NGO, and we aimed to measure disability-free survival, impact and patient satisfaction in Madagascar after a 7-month mission. METHOD: We aimed to evaluate 346 patients. Primary outcome measure was the World Health Organisation Disability Assessment Schedule 2...
October 11, 2016: World Journal of Surgery
Dorian Cazau, Olivier Adam, Thierry Aubin, Jeffrey T Laitman, Joy S Reidenberg
Although mammalian vocalizations are predominantly harmonically structured, they can exhibit an acoustic complexity with nonlinear vocal sounds, including deterministic chaos and frequency jumps. Such sounds are normative events in mammalian vocalizations, and can be directly traceable to the nonlinear nature of vocal-fold dynamics underlying typical mammalian sound production. In this study, we give qualitative descriptions and quantitative analyses of nonlinearities in the song repertoire of humpback whales from the Ste Marie channel (Madagascar) to provide more insight into the potential communication functions and underlying production mechanisms of these features...
October 10, 2016: Scientific Reports
Kathrin H Dausmann, Lisa Warnecke
Torpor, the controlled depression of virtually all bodily function during scarce periods, was verified in primates under free-ranging conditions less than two decades ago. The large variety of different torpor patterns found both within and among closely related species is particularly remarkable. To help unravel the cause of these variable patterns, our review investigates primate torpor use within an evolutionary framework. First, we provide an overview of heterothermic primate species, focusing on the Malagasy lemurs, and discuss their use of daily torpor or hibernation in relation to habitat type and climatic conditions...
November 1, 2016: Physiology
Walter G Joyce, Tyler R Lyson, James I Kirkland
BACKGROUND: Bothremydidae is a clade of extinct pleurodiran turtles known from the Cretaceous to Paleogene of Africa, Europe, India, Madagascar, and North and South America. The group is most diverse during the Late Cretaceous to Paleogene of Africa. Little is known, however, about the early evolution of the group. METHODS: We here figure and describe a fossil turtle from early Late Cretaceous deposits exposed at MacFarlane Mine in Cedar Canyon, southwestern Utah, USA...
2016: PeerJ
Rijal Satria, Osamu Sasaki, Bui Tuan Viet, Emiko Oguri, Kazutaka Syoji, Brian L Fisher, Sk Yamane, Katsuyuki Eguchi
The monotypic ant genus Xymmer Santschi, 1914 was established for X. muticus (Santschi, 1914) which has so far been known only from the West African subregion. The genus is easily distinguishable from the other amblyoponine genera by the anteromedian part of clypeus which is produced as a short rectangular lobe. Additional undescribed species had been found exclusively from Madagascar and Africa until recently. However, in March, 2015, a Xymmer colony was found in northern Central Vietnam. In the present paper Xymmer phungi sp...
September 14, 2016: Zootaxa
Liyuan Yang, Christopher H Dietrich, Yalin Zhang
Three new species, Pediopsis tripartita, P. subtilis and Ruandopsis elongata spp. nov., from Madagascar are described. These species represent the first records of their respective genera in Madagascar. Images of adults and genitalia of the three species are provided.
October 4, 2016: Zootaxa
Delphin J R Rabehaja, Gabriel Garcia, Julie-Marie Charmillon, Odile Désiré, Mathieu Paoli, Panja A R Ramanoelina, Félix Tomi
Melicope belahe (Baill.) T.G. Hartley (Rutaceae) is an endemic species to Madagascar. The chemical composition of leaf essential oil is reported for the first time. A sample was extracted by hydrodistillation and analysis was carried out by combination of chromatographic (GC), spectroscopic and spectrometric (MS, (13)C NMR) techniques. In total, 56 compounds have been identified. The chemical composition was dominated by α-pinene (42.6%) followed by linalool (6.2%) and (E)-β-caryophyllene (5.2%).
August 12, 2016: Natural Product Research
Joshua C Mathews, Karen E Samonds
Madagascar's subfossil record preserves a diverse community of animals including elephant birds, pygmy hippopotamus, giant lemurs, turtles, crocodiles, bats, rodents, and carnivorans. These fossil accumulations give us a window into the island's past from 80,000 years ago to a mere few hundred years ago, recording the extinction of some groups and the persistence of others. The crocodylian subfossil record is limited to two taxa, Voay robustus and Crocodylus niloticus, found at sites distributed throughout the island...
2016: PeerJ
Herinandrianina N Andriananjamanantsoa, Shannon Engberg, Edward E Louis, Luc Brouillet
Angraecum is the largest genus of subtribe Angraecinae (Orchidaceae) with about 221 species. Madagascar is the center of the diversity for the genus with ca. 142 species, of which 90% are endemic. The great morphological diversity associated with species diversification in the genus on the island of Madagascar offers valuable insights for macroevolutionary studies. Phylogenies of the Angraecinae have been published but a lack of taxon and character sampling and their limited taxonomic resolution limit their uses for macroevolutionary studies...
2016: PloS One
Breda M Zimkus, Lucinda P Lawson, Michael Barej, Christopher D Barratt, Alan Channing, Katrina M Dash, J Maximilian Dehling, Louis Du Preez, Philip-Sebastian Gehring, Eli Greenbaum, Václav Gvoždík, James Harvey, Jos Kielgast, Chifundera Kusamba, Zoltán T Nagy, Maciej Pabijan, Johannes Penner, Mark-Oliver Rödel, Miguel Vences, Stefan Lötters
The Mascarene ridged frog, Ptychadena mascareniensis, is a species complex that includes numerous lineages occurring mostly in humid savannas and open forests of mainland Africa, Madagascar, the Seychelles, and the Mascarene Islands. Sampling across this broad distribution presents an opportunity to examine the genetic differentiation within this complex and to investigate how the evolution of bioclimatic niches may have shaped current biogeographic patterns. Using model-based phylogenetic methods and molecular-clock dating, we constructed a time-calibrated molecular phylogenetic hypothesis for the group based on mitochondrial 16S rRNA and cytochrome b (cytb) genes and the nuclear RAG1 gene from 173 individuals...
September 21, 2016: Molecular Phylogenetics and Evolution
Noeline Razanamihaja, Yuka Makino, Hiroshi Ogawa, Noriaki Ikeda, Hideo Miyazaki
The prevalence of tobacco smoking among adolescents aged 13-15 years old in Madagascar was previously reported to be higher than the average in other African regions. A preventive approach is urgently needed to avoid the initiation of early tobacco smoking. Therefore, the aims of this study were to evaluate the status of tobacco smoking among primary schoolchildren in Madagascar and explore the factors associated with initiation of tobacco smoking in the young. This study was conducted in the Mahajanga region of Madagascar...
September 22, 2016: Health Promotion International
Giuseppe Di Gioia, Antonio Creta, Cosimo Marco Campanale, Mario Fittipaldi, Riccardo Giorgino, Fabio Quintarelli, Umberto Satriano, Alessandro Cruciani, Vincenzo Antinolfi, Stefano Di Berardino, Davide Costanzo, Ranieri Bettini, Giuseppe Mangiameli, Marco Caricato, Giovanni Mottini
BACKGROUND: Left ventricular hypertrophy (LVH) is a marker of pediatric hypertension and predicts development of cardiovascular events. Electrocardiography (ECG) screening is used in pediatrics to detect LVH thanks to major accessibility, reproducibility and easy to use compared to transthoracic echocardiography (TTE), that remains the standard technique. Several diseases were previously investigated, but no data exists regarding our study population. The aim of our study was to evaluate the relationship between electrocardiographic and echocardiographic criteria of LVH in normotensive African children...
2016: PeerJ
Benja Ramilitiana, Mihary Dodo, Henintsoa Nirina Rakotoarimanga, Rado Lalao Randriamboavonjy, Willy Franck Randriamarotia
The knowledge of normale renal sizes specific for each individual and for any ethnicity, allows diagnostic and therapeutic medical decision. For a low-income country such as Madagascar, ultrasound is an ideal tool for this purpose. This study aims to collect data on renal dimensions and to seek the correlation between these data and the demographic and anthropometric parameters in Malagasies. This is a retrospective study of 200 non-diabetic patients without chronic kidney disease, spanning 3 years, conducted in the Nephrology Department of Befelatanana Hospital, Antananarivo...
2016: Pan African Medical Journal
M D Pirie, E G H Oliver, A Mugrabi de Kuppler, B Gehrke, N C Le Maitre, M Kandziora, D U Bellstedt
BACKGROUND: The disproportionate species richness of the world's biodiversity hotspots could be explained by low extinction (the evolutionary "museum") and/or high speciation (the "hot-bed") models. We test these models using the largest of the species rich plant groups that characterise the botanically diverse Cape Floristic Region (CFR): the genus Erica L. We generate a novel phylogenetic hypothesis informed by nuclear and plastid DNA sequences of c. 60 % of the c. 800 Erica species (of which 690 are endemic to the CFR), and use this to estimate clade ages (using RELTIME; BEAST), net diversification rates (GEIGER), and shifts in rates of diversification in different areas (BAMM; MuSSE)...
2016: BMC Evolutionary Biology
Dominique Meekers, Joshua O Yukich
BACKGROUND: Malaria continues to be an important cause of morbidity and mortality in Madagascar. It has been estimated that the malaria burden costs Madagascar over $52 million annually in terms of treatment costs, lost productivity and prevention expenses. One of the key malaria prevention strategies of the Government of Madagascar consists of large-scale mass distribution campaigns of long-lasting insecticide-treated bed nets (LLIN). Although there is ample evidence that child mortality has decreased in Madagascar, it is unclear whether increases in LLIN ownership have contributed to this decline...
2016: Malaria Journal
Chris T McAllister, R Scott Seville, Ruston Hartdegen
During May and June 2015, four common leaf-tailed geckos, Uroplatus fimbriatus (Schneider), five satanic leaf-tailed geckos, Uroplatus phantasticus (Boulenger), and four mossy leaf-tailed geckos, Uroplatus sikorae Boettger originally collected from Madagascar and housed at the Dallas Zoo, USA, had their faeces examined for coccidian parasites. Eight (62%) geckos were found to be passing oöcysts, including a new eimerian, a new isosporan and a previously described eimerian. Three of four (75%) U. fimbratus (type-host) and one of five (20%) U...
October 2016: Systematic Parasitology
Nabil Killiny
Although much attention has been paid to the metabolism and biosynthesis of monoterpene alkaloids in Catharanthus roseus, its value as an experimental host for a variety of agriculturally and economically important phytopathogenic bacteria warrants further study. In the present study, we evaluated the chemical composition of the phloem and xylem saps of C. roseus to infer the nutritional requirements of phloem- and xylem-limited phytopathogens. Periwinkle phloem sap consisted of a rich mixture of sugars, organic acids, amino acids, amines, fatty acids, sugar acids and sugar alcohols while xylem contained similar compounds in lesser concentrations...
September 3, 2016: Plant Physiology and Biochemistry: PPB
Miloš Trýzna, Petr Baňař
Two new species, Diastatotropis lepidus Trýzna & Baňař sp. nov. and Diastatotropis humeralis Trýzna & Baňař sp. nov. (Anthribidae: Anthribinae: Cappadocini), from Madagascar are described. Colour habitus photographs are provided. A key to the known species of the genus Diastatotropis is provided.
2016: Zootaxa
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