Search results for "mada"

Molecular phylogeny of Malagasy poison frogs, genus Mantella (Anura: Mantellidae): homoplastic evolution of colour pattern in aposematic amphibians

2002

Abstract We studied the evolution of colour pattern in Malagasy poison frogs, genus Mantella , a group of diurnal and toxic frogs endemic to Madagascar. Based on a phylogeny reconstructed using 1130 bp of the mitochondrial 16S rRNA gene, the genus can be divided into five species groups. Within some of these groups, interspecific genetic divergences were very low (1.2–2.8% sequence divergence) while colour patterns were markedly different. In contrast, Mantella madagascariensis and M . baroni , two species which show extremely similar dorsal coloration patterns, were not included in the same clade. This conclusion was supported by high bootstrap values and by significant rejection of altern…

Gastrointestinal helminths found in the three freshwater turtles (Erymnochelys madagascariensis, Pelomedusa subrufa and Pelusios castanoides) from An…

2007

Abstract We conducted a survey of the presence, prevalence and diversity of gastrointestinal helminths in faecal samples and stomach contents of three turtle species, — Erymnochelys madagascariensis (Chelonia: Podocnemididae), Pelomedusa subrufa and Pelusios castanoides (Chelonia: Pelomedusidae), — from several localities in Madagascar. Four nematode species were detected: Atractis chabaudi, Camallanus chelonius, Falcaustra pelusios, and Spiroxys sp. E. madagascariensis, with all four species, had the greatest helminth diversity. A. chabaudi was the community’s core species, whereas Spiroxys sp. was a satellite species. Only two species (A. chabaudi and Spiroxys sp.) were found in P. subruf…

Hybridization of mouse lemurs: different patterns under different ecological conditions

2011

Abstract Background Several mechanistic models aim to explain the diversification of the multitude of endemic species on Madagascar. The island's biogeographic history probably offered numerous opportunities for secondary contact and subsequent hybridization. Existing diversification models do not consider a possible role of these processes. One key question for a better understanding of their potential importance is how they are influenced by different environmental settings. Here, we characterized a contact zone between two species of mouse lemurs, Microcebus griseorufus and M. murinus, in dry spiny bush and mesic gallery forest that border each other sharply without intermediate habitats…

El componente de selección adversa de la horquilla de precios cotizada: una revisión de los modelos de estimación

2005

-Jose.E.Farinos@uv.es -Ana.M.Ibanez@uv.es Una de las principales preocupaciones en el área de la microestructura del mercado ha sido la estimación de los componentes no observables de la horquilla de precios a partir de las series de datos que proporcionan los mercados financieros, despertando quizá un mayor interés el de selección adversa por la implicaciones que supone la existencia del mismo. Esto ha provocado el desarrollo de numerosos modelos empíricos que, basándose en las propiedades estadísticas de las series de precios, proporcionan dichas estimaciones. La mayor disponibilidad de datos existentes en los mercados ha permitido el desarrollo en los últimos años de modelos basados en t…

Paradox between malnutrition and nutritional richness of foods in Madagascar: the example of Moringa oleifera

2013

Madagascar has two faces: a developing country with a high percentage of population under poverty scale, and a country rich in natural resources. Only few studies examined this paradox between malnutrition prevalence and food availability. In other developing countries Moringa oleifera (MO) was proposed as a potential solution for its high nutritional value. In Madagascar this plant grows in the wild.The present research investigated why MO leaves are not part of Malagasy diet and how it could be introduce as daily food. A first study examined the actual nutritional composition of Malagasy MO leaves, and a second one the perceived nutritional value of these leaves by Malagasy people.Results …

Multiple overseas dispersal in amphibians

2003

Amphibians are thought to be unable to disperse over ocean barriers because they do not tolerate the osmotic stress of salt water. Their distribution patterns have therefore generally been explained by vicariance biogeography. Here, we present compelling evidence for overseas dispersal of frogs in the Indian Ocean region based on the discovery of two endemic species on Mayotte. This island belongs to the Comoro archipelago, which is entirely volcanic and surrounded by sea depths of more than 3500 m. This constitutes the first observation of endemic amphibians on oceanic islands that did not have any past physical contact to other land masses. The two species of frogs had previously been tho…

Wordarrows: El poder representativo del lenguaje en la obra de no ficción de N. Scott Momaday

2012

This article focuses on two non-fiction works by Native American author N. Scott Momaday: his 1969 historical memoir The Way to Rainy Mountain and his essay collection The Man Made of Words. It specifically tackles performative conceptions of language in the Kiowa storytelling tradition, where words are experienced as speech acts that have the power to intervene in surrounding realities. Taking into account 20th century ethno-cultural and linguistic policies in the United States, the article also reflects on the role indigenous languages may play in contemporary Native American Literature, which has most often been written in English.

El negocio mundial de las minas y de la tortura

1997

A CONFIGURAÇÃO INOVADORA DO PRINCÍPIO DA BOA ADMINISTRAÇÃO ENTRE PRIVADOS E AUTORIDADES PÚBLICAS NA UNIÃO EUROPÉIA

2017

O direito a uma boa administração pública é um dos direitos fundamentais da pessoa, garantido pelo artigo 41 da Carta dos direitos fundamentais da União Europeia, que, em 2009, por força do Tratado de Lisboa, tornou-se juridicamente vinculante com o mesmo valor de fonte primária dos Tratados europeus. Ele é definido como o direito de cada pessoa (física e jurídica) de receber, por parte da autoridade pública, em relação às questões que se lhe refiram, um tratamento imparcial, equitativo e num prazo razoável. Inclui, também, os seguintes direitos de natureza procedimental: a ser ouvida, antes de, a seu respeito, ser tomada qualquer medida individual que a afete desfavoravelmente; a ter acess…

The colposcopic atlas of schistosomiasis in the lower female genital tract based on studies in Malawi, Zimbabwe, Madagascar and South Africa.

2014

Background Schistosoma (S.) haematobium is a neglected tropical disease which may affect any part of the genital tract in women. Female genital schistosomiasis (FGS) may cause abnormal vaginal discharge, contact bleeding, genital tumours, ectopic pregnancies and increased susceptibility to HIV. Symptoms may mimic those typical of sexually transmitted infections (STIs) and women with genital schistosomiasis may be incorrectly diagnosed. An expert consensus meeting suggested that the following findings by visual inspection should serve as proxy indicators for the diagnosis of schistosomiasis of the lower genital tract in women from S. haematobium endemic areas: sandy patches appearing as (1) …