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Background: Panicoideae are the second largest subfamily in Poaceae (grass family), with 212 genera and approximately 3316 species. Previous studies have begun to reveal relationships within the subfamily, but largely la...

Two species of grey foxes are recognized in the Southern Cone of America: Lycalopex griseus, and L. gymnocercus, which were traditionally separated by size and some cranial differences. Morphometric analyses of the skull...

A comprehensive study of the structural, cohesive and electronic properties of several stable, metastable and non-stable intermetallic phases (IPs) of the Ni–In and Ni–Sn systems have been performed by ab initio dens...

Dr. Carla Riva-Rossi has over 25 years’ experience studying the evolutionary ecology of anadromous fishes. She received an MS in biological sciences from the Facultad de Ciencias Naturales, Universidad Nacional de la P...

The Sumatran Elephant Elephas maximus sumatranus is an endemic species of Indonesia, currently classified as ‘Critically Endangered’. To ensure its continued existence, conservation efforts are crucial. One of the he...

Sideroxylon obtusifolium (Humb. ex Roem. & Schult.) T.D. Penn. is a tree species belonging to the Sapotaceae family, whose black berries can be consumed fresh or as jam. It is widely distributed in Mexico, Belize, Costa ...

A partir de la conmemoración del 50 aniversario de la Revista Folia Histórica del Nordeste, nos proponemos hacer un balance y reflxionar sobre su relación con la comunicación y discusión de los avances arqueológico...

ABSTRACT Hysterothylacium species are perhaps the most abundant and diverse group of marine ascaridoids. Identification of larval stages at specific levels is very problematic. This study describes the occurrence of Hyst...

Abstract The seismic velocity structure beneath East Africa suggests interconnected corridors of hot mantle are upwelling beneath the continent. However, the geochemical evidence for deep mantle in Ethiopia‐Kenya‐Tan...

The family Xylariaceae represents a diverse assemblage of ascomycetous fungi, widely recognised for their prolific production of secondary metabolites with potent bioactive properties, including antimicrobial, anticancer...

The Precordillera terrane (Cuyania) in western Argentina is commonly accepted as an exotic fragmentderived from Laurentia in the Early Paleozoic. Evidence supporting such an interpretation is manly basedon similarities i...

The oocysts of the coccidia are robust structures, frequently isolated from the feces or urine of their hosts, which provide resistance to mechanical damage and allow the parasites to survive and remain infective for pro...

Abstract The chalcophile element fertility of arc magmas that modulates the enrichment of gold in porphyry copper deposits is negatively correlated with magma differentiation depth, which was attributed to sulfide satura...

When an earthworm reaches reproductive age, its clitellum, also referred to as the genital collar, observably enlarges and becomes more glandular. Genital features in Megascolecidae, including male and female pores, papi...

A new species of the genus Plagiopholis is described based on a single specimen collected from Wenshan Prefecture, southeastern Yunnan Province, China. Compared with other species of the genus, it has a unique combinatio...

Ecological changes in the phenology and distribution of plants and animals are occurring in all well-studied marine, freshwater, and terrestrial groups. These observed changes are heavily biased in the directions predict...

Individuals die, populations disappear, and species become extinct. That is one view of the world. But another view of the world concentrates not so much on presence or absence as upon the numbers of organisms and the de...

Los lagartos del género Liolaemus se distribuyen desde las altas cordilleras de Perú y Bolivia en el norte hasta el extremo austral de América del Sur. Se analizan los cariotipos descriptos para las 55 especies de Lio...

Antes de la captura de quien fuera el jefe de Estado iraquí Saddam Hussein, el 14 de diciembre de 2003, ya se había desencadenado un intenso debate acerca del foro más apropiado para juzgarlo. Los crímenes que le imp...

Ameghiniana was created 50 years ago. During this lapse, the late Cenozoic paleomastozoology developed exponentially in Argentina. Many of the papers dealed with systematics. However, fossil mammals were also used for es...

The Instituto de Economía y Finanzas de la Facultad de Ciencias Económicas (Universidad Nacional de Córdoba) intended to determine the Province participation in the begetting of nacional product. The representative ...

The systematics, and the geographic and stratigraphic distribution of the South American fossil taxa of Tremarctinae (Carnivora, Ursidae) are reviewed and discussed. New diagnostic characters are proposed, in order to su...

Understanding the evolutionary history of living organisms is a central problem in biology. Until recently the ability to infer evolutionary relationships was limited by the amount of DNA sequence data available, but new...