The Role of Isolation in the Formation of a Narrowly Localized Race of Deer-Mice (Peromyscus)

1917 ◽  
Vol 51 (603) ◽  
pp. 173-185 ◽  
Author(s):  
F. B. Sumner
Keyword(s):  
Deer Mice

Foraging range in mice and voles: the role of risk

1986 ◽  
Vol 64 (12) ◽  
pp. 2645-2653 ◽  
Author(s):  
Paul K. Anderson
Keyword(s):  
Risk Assessment ◽  
Deer Mice ◽  
Lake Surface ◽  
Supplementary Food ◽  
Foraging Range ◽  
Time Minimization ◽  
Energy Maximization ◽  
Fourth Experiment ◽  
Foraging Ranges

The significance of risk assessment in determining the boundaries of foraging ranges of deer mice and voles was examined by comparing the distances to which resident animals were willing to follow shifting feeding stations providing equal rewards beyond their previous foraging ranges in an area with abundant cover (forest), and in one where cover was lacking (frozen lake surface). Previous foraging ranges were estimated on the basis of livetrapping and the "rediscovery distances" for the moving stations. In three experiments the distance at which animals stopped visiting the stations ("giving-up distance") averaged 3.3 times farther where cover was abundant (forest) than where it was absent (lake). In a fourth experiment, reduction of supplementary food available within the original ranges extended the giving-up distance where cover was present but had relatively little effect on giving-up distance and almost no effect on rediscovery distance where cover was absent. Supplying cover more than tripled giving-up distances on the lake. The distance at which boxes were visited was affected by snowfall, ambient temperature, food supply, and availability of cover. Results emphasize the importance of risk assessment in defining foraging range, and suggest that hoarding permits choice among energy maximization and time minimization strategies.

Studies of the Responses of the female Aëdes mosquito. Part V. The Role of Visual Factors

1953 ◽  
Vol 43 (4) ◽  
pp. 567-574 ◽  
Author(s):  
W. L. Sippell ◽  
A. W. A. Brown
Keyword(s):  
Metal Surface ◽  
Deer Mouse ◽  
Enamel Surface ◽  
Deer Mice ◽  
Aedes Mosquito ◽  
Black Surface ◽  
Plastic Containers ◽  
Polished Metal

The role of visual factors in the attractiveness of bodies to adult A. aegypti was investigated by exposing deer-mice in transparent or opaque, airtight or perforated, plastic containers. The visual factors proved to be roughly equivalent to the airborne emanations in attractiveness, being slightly the more attractive when the mice were normally moving, and the less attractive of the two when the mice were motionless.The attractiveness of a moving black object was found to be nearly twice that of a stationary one. A deer-mouse immobilised by anaesthesia was roughly one-half as attractive as a normally moving one.Mirroring surfaces are significantly more attractive than dull ones; a black enamel surface was more attractive than a flat black surface, and a silvered mirror more attractive than a polished metal surface. It was found that enhancement of the attractiveness of a black surface could be obtained by the movement of lines of shadow, not of points of light, across it.

scholarly journals The role of isoforms in the evolution of cryptic coloration in Peromyscus mice

2016 ◽  
Author(s):  
Ricardo Mallarino ◽  
Tess A. Linden ◽  
Catherine R. Linnen ◽  
Hopi E. Hoekstra
Keyword(s):  
Evolutionary Biology ◽  
Molecular Mechanisms ◽  
Single Gene ◽  
Deer Mice ◽  
Alternative Transcript ◽  
Protein Coding ◽  
Transcript Processing ◽  
Cryptic Coloration

AbstractA central goal of evolutionary biology is to understand the molecular mechanisms underlying phenotypic adaptation. While the contribution of protein-coding and cis-regulatory mutations to adaptive traits have been well documented, additional sources of variation—such as the production of alternative RNA transcripts from a single gene, or isoforms—have been understudied. Here, we focus on the pigmentation gene Agouti, known to express multiple alternative transcripts, to investigate the role of isoform usage in the evolution of cryptic color phenotypes in deer mice (genus Peromyscus). We first characterize the Agouti isoforms expressed in the Peromyscus skin and find two novel isoforms not previously identified in Mus. Next, we show that a locally adapted light-colored population of P. maniculatus living on the Nebraska Sand Hills shows an up-regulation of a single Agouti isoform, termed 1C, compared to their ancestral dark-colored conspecifics. Using in vitro assays, we show that this preference for isoform 1C may be driven by isoform-specific differences in translation. In addition, using an admixed population of wild-caught mice, we find that variation in overall Agouti expression maps to a region near exon 1C, which also has patterns of nucleotide variation consistent with strong positive selection. Finally, we show that the independent evolution of cryptic light pigmentation in a different species, P. polionotus, has been driven by a preference for the same Agouti isoform. Together, these findings present an example of the role of alternative transcript processing in adaptation and demonstrate molecular convergence at the level of isoform regulation.

Demonstration of Early-Phase Transmission of Yersinia pestis by the Mouse Flea, Aetheca wagneri (Siphonaptera: Ceratophylidae), and Implications for the Role of Deer Mice as Enzootic Reservoirs

2008 ◽  
Vol 45 (6) ◽  
pp. 1160-1164 ◽  
Author(s):  
Rebecca J. Eisen ◽  
Jennifer L. Holmes ◽  
Anna M. Schotthoefer ◽  
Sara M. Vetter ◽  
John A. Montenieri ◽  
...  
Keyword(s):  
Yersinia Pestis ◽  
Early Phase ◽  
Deer Mice ◽  
Phase Transmission

Population Regulation in Deer Mice: The Role of Females

10.2307/4796 ◽  
1987 ◽  
Vol 56 (1) ◽  
pp. 11 ◽  
Author(s):  
Carlos Galindo ◽  
Charles J. Krebs
Keyword(s):  
Population Regulation ◽  
Deer Mice

scholarly journals GENETICS OF HEMOGLOBIN IN THE DEER MOUSE, PEROMYSCUS MANICULATUS. II. MULTIPLE ALLELES AT REGULATORY LOCI

Genetics ◽  
1978 ◽  
Vol 89 (3) ◽  
pp. 531-550
Author(s):  
Lee R G Snyder
Keyword(s):  
Genetic Variation ◽  
Natural Selection ◽  
Molecular Mechanisms ◽  
Deer Mouse ◽  
Deer Mice ◽  
Multiple Allele ◽  
Multiple Alleles ◽  
Total Hemoglobin ◽  
Regulatory Loci

ABSTRACT Deer mice are polymorphic for electrophoretic hemoglobin phenotypes showing one, two, or three bands. Within the multibanded phenotypes, there is considerable variation in the hemoglobin partitioning, defined as the fraction of total hemoglobin made up by the secondary and tertiary bands. In subspecies sonoriensis, for example, hemoglobin partitionings range from 0.03 to 0.38. The inheritance of partitioning values is under remarkably strict genetic control. The genetic variation is additive and the narrow heritability is close to 1.0. The inheritance data can be modeled in precise detail by postulating multiple-allele polymorphisms at globin regulatory loci. Comparison of simulated versus actual inheritance data demonstrates that the so-called null structural alleles actually produce functional globins.—The genetic controls in Peromyscus may be analogous to those in primates. Unfortunately, the molecular mechanisms effecting the regulation are unknown. Different subspecies of P. maniculatus show strikingly different arrays of partitioning values, but the role of natural selection in maintaining the quantitative polymorphisms remains obscure

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