Do Feed Plants Provide Sufficient Sodium, Calcium and Magnesium to Sika Deer in Japan? An Analysis Using Global Plant Trait Data.

Deficient minerals in overabundant populations could act as an attractant to cull sika deer (). Because selective culling of female deer is reported to be effective in reducing sika deer populations, it is particularly important to clarify the differences in mineral requirements between males and females. Here, using global plant trait data and a published list of sika deer feed plants in Japan, we estimated whether feed plants provide sika deer sufficient sodium (Na), calcium (Ca) and magnesium (Mg), and compared the results between males and females.

A 17-Year Study of the Response of Populations to Different Patterns in Antlerless Proportion of Imposed Culls: Antlerless Culling Reduces Overabundant Deer Population.

Increasing populations of large herbivores have caused environmental damage around the world, and it is necessary to improve population management strategies. Culling is a traditional management method. Antlerless deer proportions, consisting of adult female deer and fawn in Cervidae in wildlife statistics, are directly related to population increases; thus, the culling-based removal of individuals from habitats and the removal of these antlerless individuals by game hunting and nuisance control might be effective approaches for reducing population sizes.

FECAL PROGESTERONE METABOLITES IN POSTPARTUM SIBERIAN FLYING SQUIRRELS.

The Siberian flying squirrel ( Pteromys volans) produces up to two litters a year. To deliver second litters in breeding season, P. volans may have a postpartum estrus similarly to that of a variety of small mammals.

Seasonal changes in activity patterns of Japanese flying squirrel Pteromys momonga.

Seasonal changes of activity patterns are an important survival strategy for several species. Seasonal changes in the activity patterns of Japanese flying squirrels (Pteromys momonga) were studied at Daibosatsu Mountain on Honshu Island, Japan from 2 June to 20 November 2007 and 11 April to 14 November 2008, to discuss their survival strategy based on the change. Activity patterns were assessed using long-term sensor camera traps at 214 sites for 14 months of a 2-year period.