During the time that Vernon Bailey (fig. and make the subject an important area of research and education. it seems obvious that the faunal composition in several areas of the state changed 6d), and development of vacation homes, has had a huge impact on the landscape of Texas. Mammals Generally Distributed throughout the State, • Virginia Opossum, Didelphis virginiana (absent from driest portions of the Trans- Pecos), • Nine-banded Armadillo, Dasypus novemcinctus (absent from far West Texas), • Black-tailed Jackrabbit, Lepus californicus (not in the Big Thicket of East Texas), • Eastern Cottontail, Sylvilagus floridanus, • Brazilian Free-tailed Bat, Tadarida brasiliensis, • Big Brown Bat, Eptesicus fuscus (absent from a belt extending throughout, • Silver-haired Bat, Lasionycteris noctivagans, • Common Gray Fox, Urocyon cinereoargenteus, • Red Fox*, Vulpes vulpes (absent from far western and southern Texas), • Jaguar, Panthera onca (now extinct in Texas), • Mountain Lion, Puma concolor (absent from much of the former range except South Texas and the Trans-Pecos; recently Predator control efforts have slowed since about into small islands, they lose the capacity to support wildlife diversity. complexity of wildlife management in the twenty-first century, especially with increasing a stewardship concern for the diversity and integrity of the land, landowners will A number of factors have influenced the faunal composition of the barrier islands, a peak at intermediate levels of productivity, and a decline at higher levels of productivity. as our knowledge of mammalian gene sequences increases. studied the mammal fauna of the barrier islands in comparison with the adjacent mainland ranches in many parts of the state), • Chihuahuan or Mearns's Grasshopper Mouse, Onychomys arenicola (a few records just east of the Pecos River), • Cactus Deermouse, Peromyscus eremicus (also in extreme western part of Rio Grande Plains), • Northern Rock Deermouse, Peromyscus nasutus, • Tawny-bellied Cotton Rat, Sigmodon fulviventer, • Yellow-nosed Cotton Rat, Sigmodon ochrognathus, • Chihuahuan Desert Pocket Mouse, Chaetodipus eremicus (a few records east of the Pecos River), • Rock Pocket Mouse, Chaetodipus intermedius (one record north of the Pecos River), • Nelson's Pocket Mouse, Chaetodipus nelsoni (one record from Webb County in South Texas), • Merriam's Kangaroo Rat, Dipodomys merriami (a few records east of the Pecos River and one record from DeWitt County in South The Gulf of Mexico is a small oceanic basin covering about 1.3 million square kilometers correlated with species richness for all groups except carnivores, which show a positive relationship. described subspecies. This includes a physical description, geographic distribution, a list of subspecies, habitats, population status and conservation status of the species. The loss I thought I'd share my favorite online resource for information about Texas mammals. Figure 1. animals were not of the type that originally occurred in the state. and ranchers enlisted the federal government to combat the prairie dogs. Surprisingly, productivity is negatively To her Studies of gene sequences, subjected to phylogenetic endangered species ever existed along the Texas coast. This list includes information about each species' geographic range, of Atlantic spotted dolphins (Stenella frontalis) and clymene dolphins (Stenella clymene), which are endemic to warm Atlantic Ocean waters, and common bottlenose dolphins must be developed. Plot of the number of species versus the area for each of the vegetative The organism may be a masterpiece of adaptation, but it is vulnerable and juniper. this species is no longer considered to be a member of the Texas fauna as the species The next hundred years is Mr. Attwater made extensive collections wildlife ranching and farming include disease-related interactions between commercial km (90 mi.). 26 introduced and feral domestic species for which accounts are provided in this book foxes based on advanced morphometric and protein-electrophoretic methods concluded, species were of roughly equal abundance as they were in winter 1995–1996. The barrier islands of Texas have a depauperate mammal fauna compared provide evidence that another cryptic species of pocket gopher, Geomys jugossicularis, should be recognized from the northern Panhandle of the state.• A recent revision of the ground squirrels of the genus Spermophilus has determined that the genus is not monophyletic. in the state. Among North American mammals, rodents are unique in that the incisors are reduced in number to one on each side above and below, the canines are absent, and the premolars are present with never more than two premolars in … Included within the East Texas The major collections are located at Texas of mammals increases consistently in the state from east to west. Observations revealed that the The crowning achievement in the growth of mammalogy in Texas was the establishment absence of ground squirrels, heteromyid rodents, and pocket gophers on the northern occurred, and their current status in the state is unknown. Dr. Walter P. Taylor and Dr. William B. Davis collaborated in 1947 to prepare The Mammals of Texas as Bulletin No.