| body size variation of mammals in a fragmented, temperate rainforest. | body size is perhaps the most important trait of an organism, affecting all of its physiological and ecological processes and, therefore, fundamentally influencing its ability to survive and reproduce in different environments, including those that have been modified by human activities. we tested the hypothesis that anthropogenic transformation of old-growth forest landscapes can result in significant intraspecific changes in body size of resident biotas. we collected data on five species of no ... | 2007 | 17650255 |
| phylogenetically distinct hantaviruses in the masked shrew (sorex cinereus) and dusky shrew (sorex monticolus) in the united states. | a limited search for hantaviruses in lung and liver tissues of sorex shrews (family soricidae, subfamily soricinae) revealed phylogenetically distinct hantaviruses in the masked shrew (sorex cinereus) from minnesota and in the dusky shrew (sorex monticolus) from new mexico and colorado. the discovery of these shrew-borne hantaviruses, named ash river virus and jemez springs virus, respectively, challenges the long-held dogma that rodents are the sole reservoir hosts and forces a re-examination o ... | 2008 | 18256444 |
| new records of ectoparasites for mexico and their prevalence in the montane shrew sorex monticolus (eulipotyphla: soricidae) at cerro del mohinora, sierra madre occidental of chihuahua, mexico. | the flora and fauna protection area (área de protección de flora y fauna-ápff) cerro del mohinora, is the highest mountain in northern mexico, reaching an elevation of 3,300 meters. it constitutes one of the last high-elevation islands of alpine and subalpine vegetation known in the sierra madre occidental, in the extreme southwestern part of chihuahua. the ápff cerro del mohinora is located near the state border and limits with durango and sinaloa. this type of ecosystem located at high altitud ... | 2020 | 33055944 |
| functional and numerical responses of shrews to competition vary with mouse density. | for decades, ecologists have debated the importance of biotic interactions (e.g., competition) and abiotic factors in regulating populations. competition can influence patterns of distribution, abundance, and resource use in many systems but remains difficult to measure. we quantified competition between two sympatric small mammals, keen's mice (peromyscus keeni) and dusky shrews (sorex monticolus), in four habitat types on prince of wales island in southeast alaska. we related shrew density to ... | 2018 | 29298313 |
| description and molecular differentiation of a new staphylocystoides (cyclophyllidea: hymenolepididae) from the dusky shrew sorex monticolus in southeast alaska. | staphylocystoides gulyaevi n. sp. is described based on specimens obtained from the dusky shrew sorex monticolus collected on sukkwan island, southeast alaska. staphylocystoides gulyaevi n. sp. is compared with other north american members of the genus having 10 rostellar hooks. the new species is morphologically similar to staphylocystoides parvissima and staphylocystoides asketus. the uterus in s. gulyaevi n. sp. develops much more rapidly, and a well-developed uterus appears abruptly after it ... | 2013 | 23919726 |
| phylogeography of the dusky shrew, sorex monticolus (insectivora, soricidae): insight into deep and shallow history in northwestern north america. | phylogenetic relationships among the dusky shrew (sorexmonticolus) and eight related species (s. bairdi, s. bendirii, s. neomexicanus, s.ornatus, s. pacificus, s. palustris, s. sonomae and s.vagrans) were assessed using sequences from the mitochondrial cytochrome b gene (801 bp). analyses using parsimony and maximum likelihood revealed significant molecular variation not reflected in previous morphological studies of these species. conversely, three morphologically defined species (s.bairdi, s.n ... | 2001 | 11380879 |
| toward ecologically realistic predictions of species distributions: a cross-time example from tropical montane cloud forests. | there is an urgent need for more ecologically realistic models for better predicting the effects of climate change on species' potential geographic distributions. here we build ecological niche models using maxent and test whether selecting predictor variables based on biological knowledge and selecting ecologically realistic response curves can improve cross-time distributional predictions. we also evaluate how the method chosen for extrapolation into nonanalog conditions affects the prediction ... | 2018 | 29156083 |