Food web interactions are key to community structure. The introduction of species can be seen as an uncontrolled experiment of the addition of species. Introduced species lead to multiple changes, frequently threatening the native biodiversity. However, little is known about their direct effect on the upper level of the food web. In this study we review empirical data on the predator-prey relat...

1. Competition between livestock and wild ungulates is commonly perceived to occur on shared rangelands. In the Henry Mountains (HM) of Utah, a free-ranging population of bison Bison bison has raised concerns among ranchers holding grazing permits on these public lands. Bison are the most conspicuous potential competitors with cattle, but lagomorphs (mainly jackrabbits Lepus californicus) are a...

Members of the genus Malassezia have rarely been associated with lagomorphs. During the course of an investigation of the lipophilic mycobiota of rabbit skin, two lipid-dependent isolates which could not be identified were recovered on Leeming and Notman agar medium from different animals. No growth of Malassezia yeasts was obtained either on Sabouraud's glucose agar or modified Dixon agar medi...

It is proposed that the Harderian glands are those ocular glands that have tubuloalveolar endpieces with wide lumina and secrete lipid by a merocrine mechanism. The Harderian gland occurs in various mammals, not only in eutherias but also in marsupials. However, as the gland has hereto-fore been studied almost exclusively in rodents and lagomorphs, it should be studied more in other groups of m...