| 单词 | Sorex |
| 例句 | A new study published Monday in Current Biology reports the skulls of Sorex araneus, the most common shrew species, shrink by up to 20 percent as the cold season approaches. Small-Minded Strategy: The Common Shrew Shrinks Its Head to Survive Winter 2017-10-23T04:00:00Z The purpose of this report is to make clear the biological relationships between the shrews of the Sorex vagrans-obscurus "species group." Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z In 22 mouse traps set the first night in this locality, three Synaptomys, six Microtus and one Sorex were taken. Mammals taken Along the Alaska Highway The remote ancestors of others, such as Sorex and Lagomys, no doubt lived in Europe, but the recent species probably had their original homes in Asia. The History of the European Fauna One right ramus, bearing all three molars but lacking the other teeth and the tip of the coronoid process, needs close comparison only with certain of the smaller North American species of Sorex. Pleistocene Soricidae from San Josecito Cave, Nuevo Leon, Mexico In other parts of North America a large and a small species of Sorex often occur together in a given area. Taxonomy and Distribution of Some American Shrews In nature, the subspecies of Sorex vagrans form a cline and are distributed geographically in a chain which is bent back upon itself. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Several kinds of mammals are known only from this "biological island" including the pocket gopher mentioned above and the shrew, Sorex milleri. Two New Moles (Genus Scalopus) from Mexico and Texas It seems to me even probable that one of these Asiatic species of Sorex, viz. The History of the European Fauna In every particular it is identical with Sorex cinereus. Pleistocene Soricidae from San Josecito Cave, Nuevo Leon, Mexico There is found here, also, according to the statements of the Chukches, a little mouse, in all probability a Sorex. The Voyage of the Vega round Asia and Europe, Volume I and Volume II My own examination of hundreds of museum specimens confirms this for the Sorex vagrans group. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z So they had his poor little body stuffed, and propped him up with wire in the way they thought he looked nicest, and wrote a brand new ticket for him—Sorex Minutus. "Wee Tim'rous Beasties" Studies of Animal life and Character Teeth small; upper incisors shorter and less strongly hooked than in restricted Sorex; posterior spur large; lower incisors serrated with three coronal points. Natural History of the Mammalia of India and Ceylon Fragments of three other specimens of Sorex occur in the collection. Pleistocene Soricidae from San Josecito Cave, Nuevo Leon, Mexico His chief favorites were Roscius the comedian, Sorex the arch mime, and Metrobius the player, for whom, though past his prime, he still professed a passionate fondness. Plutarch: Lives of the noble Grecians and Romans Separation of the two age classes in an August-taken series of Sorex vagrans from coastal Washington is shown in figure 3, in which two tooth-measurements that are dependent upon wear are plotted against one another. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z A shrew mouse, Sorex tenuis; supposed to be peculiar to Timor. The Malay Archipelago, the land of the orang-utan and the bird of paradise; a narrative of travel, with studies of man and nature — Volume 1 The geographic distribution of the species Sorex vagrans is shown in figure 5. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Sorex sclateri is larger than the fossils and m2 is longer in relation to m1, being almost the same size as m1. Pleistocene Soricidae from San Josecito Cave, Nuevo Leon, Mexico If we are to speculate on the manner in which the Sorex vagrans rassenkreis originated we must inquire into the nature and extent of these climatic changes. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Within the Sorex vagrans complex, the only characters of taxonomic significance that I have detected are in size and color. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Desiccation of the intermontane parts of New Mexico, Arizona, and Chihuahua, left "marooned" populations of Sorex vagrans on suitable mountain ranges. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z A number of other boreal mammals have geographic ranges which resemble that of Sorex vagrans, except that the geographic ranges of subspecies do not overlap. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z The ecological requirements of jumping mice, genus Zapus, and the subspecies of Sorex vagrans that dwell in hydroseres are essentially similar. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z In western North America there are two species of water or marsh shrews: Sorex palustris and S. bendiri. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z The large shrews of the vagrans group on the Pacific coast were divided into three species by H. H. T. Jackson in his revision of the North American Sorex in 1928. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Sorex palustris is tied closely in its distribution to hydrosere communities and is not dependent upon the presence of forests. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z They would therefore have remained specifically distinct when Wisconsinan Sorex vagrans, reoccupied these outlying areas, and may still be found isolated in places peripheral to the range of the ancestral species. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z The subgenera Otisorex and Sorex probably separated in early Pleistocene or late Pliocene. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Diagrammatic representation of the probable phylogeny of Sorex vagrans and its near relatives. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z These small shrews of the Great Basin and the small vagrant shrews of the Pacific Coast were called Sorex vagrans by Jackson. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Probable geographic ranges of the subspecies of Sorex vagrans on the coast of British Columbia and southeastern Alaska. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Remarks.—In the northern part of its range S. v. elassodon occurs with Sorex cinereus. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Throughout most of its range S. v. alascensis occurs with Sorex cinereus. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z It is the only species of Sorex thus far recorded from that area. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z The name applies to the small vagrant shrew of this area, rather than to the larger forest dweller which has been known as Sorex obscurus. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Throughout most of its range, S. v. monticola is the only Sorex present. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z This shrew is probably no longer in reproductive continuity with Sorex vagrans of the Sierra Nevada. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Remarks.—This subspecies seems to be restricted to salt marshes where it occurs with Sorex ornatus. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z The sympatric existence of the terminal subspecies of the Sorex vagrans rassenkreis is made possible by marked differences between them in size and in ecological preference. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z The overlapping end-members of the chain of subspecies of Sorex vagrans really do coexist; specimens of the overlapping subspecies have been taken together at the same localities from California to British Columbia. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z Sorex v. vagrans originated in the Great Basin and arrived on the Pacific Coast after the last deglaciation of the Cascades and Sierra Nevada. Speciation of the Wandering Shrew 2011-12-22T03:00:30.143Z |
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