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Interspecific Competition For Pollination Lowers Seed Production And Outcrossing In Mimulus Ringens, John M. Bell, Jeffrey D. Karron, Randall J. Mitchell
Interspecific Competition For Pollination Lowers Seed Production And Outcrossing In Mimulus Ringens, John M. Bell, Jeffrey D. Karron, Randall J. Mitchell
Biology Faculty Research
Sympatric plant species with similar flowering phenologies and floral morphologies may compete for pollination, and as a consequence potentially influence each other's reproductive success and mating system. Two likely competitors are Mimulus ringens and Lobelia siphilitica, which co-occur in wet meadows of central and eastern North America, produce blue zygomorphic flowers, and share several species of bumble bee pollinators. To test for effects of competition for pollination, we planted experimental arrays of Mimulus ringens, each consisting of genets with unique combinations of homozygous marker genotypes. In two arrays we planted mixtures of Mimulus and Lobelia. and in two additional arrays …
Social Organization Of The Eastern Rock Elephant-Shrew (Elephantulus Myurus): The Evidence For Mate Guarding, David O. Ribble, M. R. Perrin
Social Organization Of The Eastern Rock Elephant-Shrew (Elephantulus Myurus): The Evidence For Mate Guarding, David O. Ribble, M. R. Perrin
Biology Faculty Research
Understanding the costs and benefits of defending solitary females, or mate guarding, may be the key to understanding the evolution of monogamy in most mammals. Elephant-shrews, or sengis, are a unique clade of small mammals that are particularly attractive for studies of mate guarding. We studied the spatial organization of Eastern Rock Sengis (Elephantulus myurus) in KwaZulu-Natal, South Africa, from August – December 2000. Our objectives were to describe the home ranges of males and females using radiotelemetry, noting the sizes and overlap of adjacent ranges and how the spatial organization changes through time. Males and females were …
Density And Cover Preferences Of Black-And-Rufous Elephant-Shrews (Rhynchocyon Petersi) In Chome Forest Reserve, Tanzania, Stephanie Coster, David O. Ribble
Density And Cover Preferences Of Black-And-Rufous Elephant-Shrews (Rhynchocyon Petersi) In Chome Forest Reserve, Tanzania, Stephanie Coster, David O. Ribble
Biology Faculty Research
The objective of this study was to determine the density and habitat preference of the Black-andrufous elephant-shrew (Rhynchocyon petersi) in Chome Forest Reserve, Tanzania. Chome Forest (143km2) is located in the South Pare Mountains and provides critical habitat for endangered R. petersi. Twelve 300m transects were cut through the centre of the forest in an east-west direction and the number of elephant-shrew nests within 2.5 meters on each side of the transects was recorded. The mean number of nests per 100m transect (0.39 ± 0.47 [1SE]) translated to a density estimate of 19 elephant-shrews per …