Evolution of mammals and their gut microbes

…, M Hamady, C Lozupone, PJ Turnbaugh, RR Ramey… - science, 2008 - science.org
Mammals are metagenomic in that they are composed of not only their own gene complements
but also those of all of their associated microbes. To understand the coevolution of the …

Highways block gene flow and cause a rapid decline in genetic diversity of desert bighorn sheep

…, JD Wehausen, GK Roderick, RR Ramey… - Ecology …, 2005 - Wiley Online Library
The rapid expansion of road networks has reduced connectivity among populations of flora
and fauna. The resulting isolation is assumed to increase population extinction rates, in part …

[PDF][PDF] Domestic sheep, bighorn sheep, and respiratory disease: a review of the experimental evidence

JD Wehausen, ST Kelley, RR Ramey - California Fish and Game, 2011 - researchgate.net
RAMEY II, RR 2000. New perspectives on the evolutionary origins, historic phylogeography,
and population structure of North American mountain sheep. Transactions of the North …

An Investigation of Factors Affecting the Decline of Delta Smelt (Hypomesus transpacificus) in the Sacramento-San Joaquin Estuary

…, DD Murphy, D Fullerton, RR Ramey - Reviews in Fisheries …, 2012 - Taylor & Francis
The delta smelt is an annual fish that is endemic to the Sacramento-San Joaquin Estuary
and is protected under federal and California Endangered Species Acts. Record low …

Experiments in DNA extraction and PCR amplification from bighorn sheep feces: the importance of DNA extraction method

JD Wehausen, RR Ramey, CW Epps - Journal of Heredity, 2004 - academic.oup.com
Reliability of genotyping is an issue for studies using non-invasive sources of DNA. We
emphasize the importance of refining DNA extraction methods to maximize reliability and …

Genetic variation of major histocompatibility complex and microsatellite loci: a comparison in bighorn sheep

…, S Kalinowski, MCT Penedo, RR Ramey - Genetics, 1997 - academic.oup.com
Examining and comparing genetic variation for major histocompatibility complex (MHC) and
microsatellite (MS) loci in the same individuals provides an opportunity to understand the …

Cranial Morphometric and Evolutionary Relationships in the Northern Range of Ovis Canadensis

JD Wehausen, RR Ramey - Journal of Mammalogy, 2000 - academic.oup.com
… –6) had a smaller correlation (r 2 = 0.041 for all ages; 0.043 for age ≥8) because that
variable included important geographic variation not related to horn size (Wehausen and Ramey

Spatial relationships and matrilineal kinship in African savanna elephant (Loxodonta africana) clans

RA Charif, RR Ramey, WR Langbauer… - Behavioral Ecology and …, 2005 - Springer
African savanna elephants, Loxodonta africana, live in stable family groups consisting of
adult females and their dependent offspring. During the dry season, “clans” consisting of …

Determination of critical habitat for the endangered Nelson's bighorn sheep in southern California

…, CR Hallum, PR Krausman, RR Ramey - Wildlife Society …, 2004 - Wiley Online Library
… nelsoni) (Ramey 1993, 1995;Wehausen and Ramey 1993). Peninsular bighorn sheep were
fully protected by the California Department of Fish and Game (CDFG) in 1873 (Bureau of …

Population subdivision among desert bighorn sheep (Oviscanadensis) ewes revealed by mitochondrial DNA analysis

WM Boyce, RR Ramey, TC Rodwell… - Molecular …, 1999 - Wiley Online Library
We used behavioural observations and mitochondrial DNA (mtDNA) sequence analysis to
examine demographic and genetic structure within and among home‐range groups of desert …