Its range encompasses diverse climatic, edaphic, and vegetation zones, including 2 islands. Download premium images you cant get anywhere else. Comprehensive report species dipodomys merriami parvus. Merriams kangaroo rat dipodomys merriami is one such desert resident. Walsberg department of biology, arizona state university, tempe, arizona 852871501 usa abstract. Milk analysis of the kangaroo rat, dipodomys merriami.
Calecotox exposure factors for merriams kangaroo rat. Density, home range, weight changes, production of young, sex ratio and minimum residence time between first. The san bernardino kangaroo rat dipodomys merriami parvus is one of 19 recognized subspecies of merriams kangaroo rat d. All structured data from the file and property namespaces is available under the creative commons cc0 license. Absence of aquaporin4 water channels from kidneys of the desert rodent dipodomys merriami merriami yan huang,1 randall tracy,2 glenn e. Dipodomys definition of dipodomys by the free dictionary. San bernardino kangaroo rat dipodomys merriami parvus. Genetic consequences of postglacial range expansion in two codistributed rodents genus dipodomys depend on ecology and genetic locus tereza jezkova. We examined effects of radionuclide exposure at two atomic blast sites on kangaroo rats dipodomys merriami at the nevada test site, nevada, usa, using genotoxicity and population genetic analyses. The status and known distribution of the san bernardino kangaroo rat dipodomys merriami parvus. Merriam kangaroo rat dipodomys merriami near oracle, pinal county, arizona, united states 5 august adult heteromyi.
Seasonal water and energy metabolism of the desert. Unlimited viewing of the articlechapter pdf and any associated supplements and figures. Responses of merriams kangaroo rats, dipodomys merriami. The san joaquin kangaroo rat dipodomys nitratoides has one of the smallest. Eight rats, group a, were kept at room temperature, 25 2 c. Four years of my research on olfactory communication in the merriams kangaroo rat, dipodomys merriami indicate that olfactory signals are a major. Neighbor recognition in the merriams kangaroo rat dipodomys merriami was tested in neighbor and nonneighbor pairs of the same and opposite sex in a large enclosure in the field. The significance of these values is discussed in terms of the animals water balance. Las pkr y las skr tienen cinco dedos en cada pata trasera. Dipodomys merriami dipodomys merriami dipodomys merriami dipodomys merriami i0 peromyscus eremicus perogrfothus formosus itodipus bai. Heart rate, hr, depression increased in magnitude with increasing co 2 concentration 3. Calecotox exposure factors for merriams kangaroo rat dipodomys merriami page 1 endpoint type. Tail of an adult ords kangaroo rat dipodomys ordii, southeastern alberta, prairie canada.
The effects of climate change on merriam s kangaroo rat. Yearround measurements of water influx rates and field metabolic rates via doubly labeled water, diet composition stomach content analysis, and body. Integration of genotoxicity and population genetic. Files are available under licenses specified on their description page. Pdf locomotion in kangaroo rats and its adaptive significance. All months of the year were represented and 985 specimens were examined. Using merriams kangaroo rats dipodomys merriami, we assessed the explanatory power and generality of hypothesized syndrome structures derived from the literature and the natural history of the species. Effects of food value, predation risk, and pilferage on. Mutual tolerance, rather than aggression, occurred in the encounters, and neighbor recognition was. Daily cycles of hibernation in the kangaroo rat, dipodomys merriami. The species name commemorates clinton hart merriam. Collections of merriams kangaroo rat dipodomys merriami were made from a creosote bush community near las vegas, nevada, during the period 30 may 1962 to 31 january 1965.
Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Dipodomys merriami mearns, 1890 least concern links. Dipodomys merriami stock pictures, royaltyfree photos. Jacobs is now at the department of psychology, university of utah, salt lake. Reproduction and food habits of merriams kangaroo rat. Behrends department of psychology mcmaster university, hamilton, ontario l8s 4k1, canada address reprint requests to m. Dipodomys merriami merriami, were collected from three locations that differ in environmental temperatures and aridity. San bernardino kangaroo rat, dipodomys merriami parvus philip v.
A species thermal and hydric environments may vary significantly through. Aboveground activity of merriams kangaroo rats dipodomys. Absence of aquaporin4 water channels from kidneys of the. Genetic consequences of postglacial range expansion in two. However, little is known about how foodstoring animals determine the risk of.
Scatter hoarding by kangaroo rats dipodomys merriami and pilferage from their caches martin daly lucia f. Biological science section, san bernardino county museum. Dipodomys kangaroo rats genus dipodomys mammal genus a genus of mammals family heteromyidae, heteromyidae small new world burrowing mouselike. Dipodomys synonyms, dipodomys pronunciation, dipodomys translation, english dictionary definition of dipodomys. If you previously purchased this article, log in to readcube. Daily and seasonal patterns of activity and energetics in. The ability of merriams kangaroo rat dipodomys merriami and the rock pocket mouse chaetodipus intermedius to locate sandboxes with food was studied in a series of three experiments using large laboratory arenas 6. Thirtysix kangaroo rats were captured in the mojave desert near las vegas. Description of dipodomys merriami merriams kangaroo rat, seen in the film ocean oasis. However, it is not a legal authority for statutory or regulatory purposes. The 11 taxa recognized in the merriami complex in this region almost 50 years ago remain valid to the present.
Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability coloration and appearance of these illustrations may not perfectly resemble the. Description of a race of dipodomys merriami from arizona. Dipodomys have an average gestation length of 31 days, and the average litter size is two. Find highquality dipodomys merriami stock photos and editorial news pictures from getty images. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. Revision of the dipodomys merriami complex in the baja. The reproductive condition of all specimens was determined. This file is licensed under the creative commons attributionshare alike 2. Intraspecific variation in water loss in a desert rodent. Dipodomys merriami was chosen because it provided a large sample size and because it is a dominant species i.
Chemical tox exposure endpoint type endpoint description endpoint value note reference. Aboveground activity of merriams kangaroo rats dipodomys merriami in relation to sex and reproduction in behaviour authors. Spatial relationships between burrows of an insular population of dipodomys merriami. Wild rodents dipodomys merriami used as biomonitors in contaminated mining sites. Dipodomys merriami is found in the upper and lower sonoran life zones of the southwestern united states, baja. The milk of dipodomys merriami has an average water content of 50. Respiratory frequency, r f, increased by about 20 per cent at all levels of co 2 concentration. Mammal species of the world a taxonomic and geographic reference. We assessed chromosome damage by micronucleus and flow cytometric assays and genetic variation by randomly amplified polymorphic dna rapd and mitochondrial dna mtdna analyses. San bernardino kangaroo rat, dipodomys merriami parvus. Show full abstract rat, dipodomys merriami merriami, which produce extremely concentrated urine up to 5,000 mosmolkgh2o, were examined for aqp4 expression and localization. The inclusion of both insularis and margaritae within merriami is supported by mitochondrial dna sequence data riddle et al. Freeliving merriams kangaroo rats in the mojave desert did not drink, even when abundant rainwater was available for short periods in winter and summer, but they still obtained much more water than expected from a diet of dry seeds alone.
Dipodomys merriami is a rodent inhabiting grassland and desert scrub. Several aspects of functionally distinct behavioural responses of d. Range use patterns and spatial relationships of merriams. Jacobs university of california, berkeley caching food is an economic, decisionmaking process that requires animals to take many factors into account, including the risk of pilferage. Ability of dipodomys merriami and chaetodipus intermedios.
To test these predictions, i examined the scattercaching decisions of merriams kangaroo rats dipodomys merriami. Resource availability and microhabitat use by merriams kangaroo. Effects of food value, predation risk, and pilferage on the caching decisions of dipodomys merriami. Collections of merriams kangaroo rat dipodomys merriami were made from a creosote bush community near las vegas, nevada, during the period. Western diamondbacked rattlesnake, crotalus atrox, eating a road killed merriams kangaroo rat, dipodomys merriami. Pdf spatial relationships between burrows of an insular. Van hoek1 1renal unit and program in membrane biology, massachusetts general hospital and harvard medical school, boston 02114. A small, darkcolored fourtoed kangaroo rat, with tl 230 to 235 mm, bl 95 mm. Its distribution covers southwestern united states to southern zacatecas. The kangaroo rat dipodomys merriami occurs widely over the baja california peninsula, inhabiting all the arid and sandy lowlands. An unusual distributional record of merriams kangaroo rat. Microhabitat use by dipodomys merriami was investigated using live trapping and dyed seed collection methods at a site where direct observations of.
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