Based on molecular data for mitochondrial (Cyt b, COI) and nuclear (IRBP, GHR) genes, and morphological examinations of museum specimens, we examined diversity, species boundaries, and relationships within and between the murine genera Chiromyscus and Niviventer. Phylogenetic patterns recovered demonstrate that Niviventer sensu lato is not monophyletic but instead includes Chiromyscuschiropus, ...

Fecal samples from 3 species of Onychomys (Rodentia: Muridae) captured in New Mexico and Arizona were examined for coccidia. Six of the 59 (10%) were infected with a new species of Eimeria. Sporulated oocysts (n = 105) of this new species are subspheroidal, 17.4 x 16.1 (14-21 x 13-19) microm, with ellipsoidal sporocysts 10.4 x 5.7 (9-12 x 5-8) microm. This species occurred in 3 of 24 (13%) Onyc...

Both sexes of a new species of sucking louse Hoplopleura janzeni (Phthiraptera: Hoplopleuridae) are described and illustrated from the Central American ichthyomyine swimming mouse Rheomys raptor (Rodentia: Muridae) collected in Costa Rica. The morphology of the new species is compared with that of Hoplopleura exima Johnson, the only other species of sucking louse known to parasitize an ichthyom...

Dr. Marta Alenquer should be included in the author byline instead of the Acknowledgments. She should be listed as the fourth author, and her affiliation is: 1: Instituto de Medicina Molecular e Instituto de Microbiologia, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal. The contributions of this author are as follows: Performed the experiments. The correct citation is: Fontinha...

The diet of the Austral Pygmy Owl, Glaucidium nana, a small raptor, was studied by pellet analysis. During fall 2020, 52 pellets were collected in peri-urban protected area. Amongst 122 prey items, Muridae, represented exclusively alien species Rattus rattus and norvegicus, made up 35.24 % number 67.1 biomass, followed native Cricetidae, at 37.69 17.9 biomass. In last place relative frequency b...

Dear Editor, Hantaviruses are enveloped negative stranded RNA viruses (family Bunyaviridae, genus Hantavirus) transmitted to humans via aerosols or direct contact from inapparent infection from rodents of the Muridae and Cricetidae families. Two distinct clinical forms are recognised: haemorrhagic fever with renal syndrome (HFRS), a severe acute febrile illness with renal and hepatic dysfunctio...

Mus terricolor chromosomal types I, II, III from different places of India were cytogenetically analyzed. Chromosome types II and III showed polymorphic pericentric inversions of autosomes 2 and 5 present in homozygous or heterozygous condition in the populations. Moreover, besides fixed heterochromatic arms on autosomes 1, 3, and 6; the autosome 8 in terricolor type III showed a large heteroch...

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...