Se estudian los Arvicolidae (Rodentia, Mammalia) de niveles inferiores Gran Dolina (TD3, TD4 y TD4B), relleno cárstico cerca 18 metros potencia que abarca parte del Pleistoceno Inferior Medio, se encuentra dentro complejo yacimientos Atapuerca (Burgos, España). Estos son conocidos principalmente por el hallazgo la mayor concentración restos humanos con un estado conservación excepcional. Además...

Cylindrodon galbreathi Ostrander is shown to be ajunior synonym of C. nebraskensis Hough and AIf, and the first specimen of Ardynomys occidentalis is reported from the Chadronian of Nebraska. A restudy of the holotype of Cupressimus storeri Ostrander has revealed that this species is not referable to Cupressimus Storer but is referred to a new genus, Paranamatomys, which is referred to a new tr...

Among the fundamental questions regarding cultivated plants is their geographic origin and region of domestication. The genus Cucumis, which includes cucumber (Cucumis sativus) and melon (Cucumis melo), has numerous wild African species, and it has therefore been assumed that melon originated in Africa. For cucumber, this seemed less likely because wild cucumbers exist in India and a closely re...

The Cape porcupine Hystrix africaeaustralis is a large (12-18 kg) nocturnal hystricomorph rodent occurring throughout southern Africa where it is sometimes used as a source of food and often regarded as a nuisance by crop-producing fanners. They live in family groups, these generally comprising an adult male, adult female and varying numbers of offspring of successive litters. Reproduction is c...

The segmented taper equation has great flexibility and is widely applied in exiting taper systems. The unconstrained least square regression (ULSR) was generally used to estimate parameters in previous applications of the segmented taper equations. The joint point parameters estimated with ULSR may fall outside the feasible region, which leads to the results of the segmented taper equation bein...

Many plants support symbiotic microbes, such as endophytic fungi, that can alter interactions with herbivores. Most endophyte research has focused on agronomically important species, with less known about the ecological roles of native endophytes in native plants. In particular, whether genetic variation among endophyte symbionts affects herbivores of plant hosts remains unresolved for most nat...

Se estudió una pequeña colección de muroideos (Rodentia, Muridae) fósiles provenientes del Miembro Media la Formación Nuapua (Holoceno inferior) exhumada en Quebrada (20° 52' S; 63 ° 04' O; 500 m sobre el nivel mar), departamento Chuquisaca, Bolivia. determinaron restos asignables a los sigmodontinos Holochilus chacarius balnearum (Oryzomyini), Necromys sp. (Akodontini), Calomys y Craomys (Phyl...

A comparative analysis of the features transition-transversion bias nucleotide sequence cytb gene in microbats (Vespertilionidae, Chiroptera) and mice (Muridae, Rodentia) shows both general regularities certain family-level features. common feature two families is fact sharp predominance transitions over transversions at early stages evolutionary process, followed by equalization ts/tv-displace...