scholarly journals Diurnal patterning of eight activities in 14 species of muroid rodents

1980 ◽  
Vol 8 (2) ◽  
pp. 322-330 ◽  
Author(s):  
Denis J. Baumgardner ◽  
Susan E. Ward ◽  
Donald A. Dewsbury
Keyword(s):  
Muroid Rodents

Estrous Cycles of Nine Species of Muroid Rodents

1977 ◽  
Vol 58 (1) ◽  
pp. 89-92 ◽  
Author(s):  
D. A. Dewsbury ◽  
D. Q. Estep ◽  
D. L. Lanier
Keyword(s):  
Estrous Cycles ◽  
Muroid Rodents

scholarly journals Exploration strategies map along fast-slow metabolic and life-history continua in muroid rodents

2009 ◽  
Vol 23 (1) ◽  
pp. 150-156 ◽  
Author(s):  
V. Careau ◽  
O. R. P. Bininda-Emonds ◽  
D. W. Thomas ◽  
D. Réale ◽  
M. M. Humphries
Keyword(s):  
Life History ◽  
Muroid Rodents

Electromorphs and Phylogeny in Muroid Rodents

1985 ◽  
pp. 671-683 ◽  
Author(s):  
Francois Bonhomme ◽  
Djoko Iskandar ◽  
Louis Thaler ◽  
Francis Petter
Keyword(s):  
Muroid Rodents

Pregnancy initiation in postpartum estrus in three species of muroid rodents

1979 ◽  
Vol 13 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Donald A. Dewsbury ◽  
Robert L. Evans ◽  
Daniel G. Webster
Keyword(s):  
Muroid Rodents ◽  
Postpartum Estrus

Food hoarding in muroid rodents

1974 ◽  
Vol 11 (2) ◽  
pp. 177-187 ◽  
Author(s):  
David L. Lanier ◽  
Daniel Q. Estep ◽  
Donald A. Dewsbury
Keyword(s):  
Food Hoarding ◽  
Muroid Rodents

scholarly journals Attenuated enzootic (pestoides) isolates of Yersinia pestis express active aspartase

Microbiology ◽  
2009 ◽  
Vol 155 (1) ◽  
pp. 198-209 ◽  
Author(s):  
Scott W. Bearden ◽  
Christopher Sexton ◽  
Joshua Pare ◽  
Janet M. Fowler ◽  
Cindy G. Arvidson ◽  
...  
Keyword(s):  
Yersinia Pestis ◽  
Yersinia Pseudotuberculosis ◽  
Amino Acid Position ◽  
Enzymic Activity ◽  
Broad Host Range ◽  
Missense Mutations ◽  
Tissue Invasion ◽  
Muroid Rodents ◽  
Glucose 6 Phosphate Dehydrogenase ◽  
Reduced Activity

It is established that Yersinia pestis, the causative agent of bubonic plague, recently evolved from enteropathogenic Yersinia pseudotuberculosis by undergoing chromosomal degeneration while acquiring two unique plasmids that facilitate tissue invasion (pPCP) and dissemination by fleabite (pMT). Thereafter, plague bacilli spread from central Asia to sylvatic foci throughout the world. These epidemic isolates exhibit a broad host range including man as opposed to enzootic (pestoides) variants that remain in ancient reservoirs where infection is limited to muroid rodents. Cells of Y. pseudotuberculosis are known to express glucose-6-phosphate dehydrogenase (Zwf) and aspartase (AspA); these activities are not detectable in epidemic Y. pestis due to missense mutations (substitution of proline for serine at amino position 155 of Zwf and leucine for valine at position 363 of AspA). In this study, functional Zwf was found in pestoides strains E, F and G but not seven other enzootic isolates; enzymic activity was associated with retention of serine at amino acid position 155. Essentially, full AspA activity occurred in pestoides isolates where valine (pestoides A, B, C and D) or serine (pestoides E, F, G and I) occupied position 363. Reduced activity occurred in strains Angola and A16, which contained phenylalanine at this position. The k cat but not K m of purified AspA from strain Angola was significantly reduced. In this context, aspA of the recently described attenuated enzootic microtus biovar encodes active valine at position 363, further indicating that functional AspA is a biomarker for avirulence of Y. pestis in man.

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