| swimming ability in three costa rican dry forest rodents. | we investigated the swimming abilities of three costa rican dry forest rodents (coues' rice rat. oryzomys couesi, hispid cotton rat, sigmodon hispidus, and spiny pocket mouse, liomys salvini) associated with a large marsh, laguna palo verde, using 90 s swim trials in a plastic container. swimming ability was evaluated by observing the use of limbs and tail in the water, inclination to the surface, and diving and floating behavior. rice rats could float, swim and dive, suggesting that they can ex ... | 2001 | 12189799 |
| minimal metabolism, summit metabolism and plasma thyroxine in rodents from different environments. | rodents were live-trapped in three environments (desert, intermediate and coastal) in southern california, usa, chosen because of the taxonomic overlap of species. upon capture, blood samples were taken and plasma thyroxine concentrations were measured. four species (dipodomys merriami, perognathus fallax, peromyscus eremicus and peromyscus californicus) were returned to the laboratory for measurement of minimal and summit rates of metabolism. heteromyid rodents had significantly lower plasma th ... | 2010 | 2863060 |
| the blood parasites of the spiny pocket mouse liomys salvini (thomas, 1893) from costa rica. | a survey of the blood parasites of 20 liomys salvini revealed 3 types of parasites. sixty percent of the mice harbored trypanosoma zeledoni, 5% an unnamed species of hepatozoon, and 20% of the mice were infected with a species of haemobartonella. | 2000 | 10701581 |
| experimental infection of potential reservoir hosts with venezuelan equine encephalitis virus, mexico. | in 1993, an outbreak of encephalitis among 125 affected equids in coastal chiapas, mexico, resulted in a 50% case-fatality rate. the outbreak was attributed to venezuelan equine encephalitis virus (veev) subtype ie, not previously associated with equine disease and death. to better understand the ecology of this veev strain in chiapas, we experimentally infected 5 species of wild rodents and evaluated their competence as reservoir and amplifying hosts. rodents from 1 species (baiomys musculus) s ... | 2009 | 19331726 |
| new species of trichuris (nematoda: trichuridae) parasitizing heteromys salvini (rodentia: heteromyidae) from costa rica, with a key to trichuris species described from heteromyidae. | trichuris guanacastei n sp., a parasite isolated from the salvin' spiny mouse heteromys salvini, collected from the guanacaste conservation area, costa rica, during february 1996 is described. the new species was compared morphologically with the 29 known species that parasitize rodents distributed in 12 families in north and south america; t. guanacastei n. sp. it is characterized by the following set of traits: presence of a spicular tube (measuring 0.72-0.99); thick proximal cloacal tube and ... | 2020 | 32609245 |