Habitat loss is a leading cause of species endangerment, yet information about habitat is anecdotal for most mammals. The Least Chipmunk ( Neotamias minimus ) is the most widespread chipmunk in North America and is purportedly a habitat generalist, which should buffer it against habitat loss. ...
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Invasive species may modify native species occurrence and behavior through indirect and direct mechanisms. We studied the influence of wild pigs on Nine-banded Armadillo providing evidence that wild pigs modify armadillo behavior. Armadillo activity was 3.5 to 5.1× higher in areas used by wild pigs.
Freezing has proven to be an ideal means for preserving tissues for molecular research on mammals. Here, we trace the origins, early practices, and rapid growth of frozen tissue collections to better understand the history, science, and people that led to the early development and recent growth of these internationally valuable research resources. Frozen tissue collections grew gradually from rudimentary beginnings in the early 1970s but have expanded rapidly in recent years, providing data for studies on biodiversity, phylogenetics, emerging pathogens, isotopes, and contaminants, among other avenues of research.
Litter size and offspring sex ratio of Pteromys volans were compared between 2 reproductive peaks (spring and summer) in Hokkaido, Japan. The mean litter size in summer was significantly larger than in spring. The overall sex ratio of pups did not differ between seasons, not as per predictions of the Trivers–Willard hypothesis.
This study demonstrates that mitochondrial DNA sequencing of noninvasively sampled rodent hairs from the tropical rainforests of Gabon can be used to census both terrestrial and arboreal species. Using a baited hair trap design, we show that DNA sequences can be obtained from traps of different dimensions and that this technique can be used to effectively sample rodent communities.
This study applied passive acoustic monitoring (PAM) to investigate the vocalization behavior and nocturnal activity patterns of Dactylomys boliviensis in the southwestern Amazon. Despite extensive sampling efforts, the results indicated that neither the extent of bamboo-dominated forest cover nor lunar illumination influenced the species’ vocalization patterns.
We examined mitochondrial phylogeographic variation, demographic history, and niche differentiation across one of the most widely distributed shrew species, Sorex monticola. We identified 3 clades (Southern, Coastal, and Northern) with phylogenetic and species delimitation analyses. Each has a distinctive demographic history and significant niche divergence that lends additional support to their status as distinct species, with S. monticola, S. pacificus, and S. obscurus representing the Southern, Coastal, and Northern clades, respectively. Distribution models projected for the year 2070 indicate that suitable habitat will decline for southern S. monticola, with isolated populations in the mountain ranges of the southwestern United States and northwestern Mexico predicted to experience the most severe reductions.
The Neotropics encompasses a wide range of biomes and habitat types that place it as one of the most important regions for understanding the prevalence of cryptic and unknown diversity. However, this region is one of the least represented in genetic data in the tree of life. Therefore, advancing intra and interspecific genetic revisions in this region represents a major scientific priority to reduce our ignorance of the planet’s biodiversity. American marsupials of the subgenus Marmosops are distributed in a wide variety of Neotropical habitats, so it is an attractive group for undertaking studies on Neotropical diversification processes, but such research is hindered by the fact that we do not yet fully understand the species limits of some groups within the subgenus. Herein, we evaluate the evolutionary independence of 13 morphologically cryptic mtDNA haplogroups within Marmosops that were identified by our previous single-locus species delimitation analyses.
This comprehensive literature review summarizes our current knowledge on the 7 carnivoran species of the Philippines. Many research gaps were identified and can direct future studies on these mammals, some of which are threatened.
Editor-in-Chief
Brett Riddle
Impact Factor
1.5
5 year Impact Factor
2.0
Zoology
58 out of 180
White-nose Syndrome in Bats Collection
WNS has caused serious population declines in bat species across the globe. Here, we bundle a collection of papers that explore aspects of WNS directly and present research to improve our understanding of bat vulnerability as well as fungus pathogenicity.
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