(10) US hantavirus species Rodent reservoirs: Number of Common name (Latin US cases name) Sin nombre (Spanish Deer mouse 658 for "without a name") (Peromyscus maniculatus) Bayou Marsh rice rat
5 (Oryzomys palustris) Monongahela Deer mouse 4 (Peromyscus maniculatus) New York White-footed mouse 2 (Peromyscus leucopus) Black Creek Canal Hispid cotton rat 1 (Sigmodon hispidus) US hantavirus species States of occurrence (unknown for 28 cases) Sin nombre (Spanish Every US state except for "without a name") MI, OH, NH, CT, MA, RI, NJ, DL, ML, MO, AR, KY, TN, LA, MS, AL, GA, FL, SC Bayou TX, LA Monongahela PA, WV New York NY Black Creek Canal FL
Pineal gland and melatonin affect testicular status in the adult marsh rice rat
The presence of forest small rice rat
in disturbed and primary habitats agrees with other observations (Hershkovitz 1972, Handley 1976, Aagaard 1982, Eisenberg 1989) confirming the wide ecological tolerance of this species.
Hispid cotton rats (Sigmodon hispidus) and rice rats
(Oryzomys palustris) were dominant prey items, and their rank-order importance in owl diet was independent of seasonal fluctuations in abundance in the field.
Coues' rice rat
appears a highly adept swimmer, whose diving skills and propulsive tail use indicate that it may use underwater habitats for escape routes and foraging.
Rio Mamore virus: genetic characterization of a newly recognized hantavirus of the pygmy rice rat
, Oligoryzomys microtis, from Bolivia.
RIOMV has been identified in the pigmy rice rat
(Oligoryzomys microtis) in Bolivia (17).
Overall, eight species of rodents and one species of insectivore totaling 36 individuals were captured: hispid cotton rat (Sigmodon hispidus, 12 individuals in all habitats), marsh rice rat
(Oryzomys palustris, 7 individuals), cotton mouse (Peromyscus gossypinus, 6 individuals), white-footed mouse (Peromyscus leucopus, 3 individuals), pygmy mouse (Baiomys taylori, 3 individuals), eastern wood rat (Neotoma floridana, 2 individuals), deer mouse (Peromyscus maniculatus, 1 individual), fulvous harvest mouse (Reithrodontomys fulvescens, 1 individual) and least shrew (Cryptotis parva, 1 individual).
trap-nights Trap success rate (%) A 80 160 36/160 (22.5) B 160 640 82/640 (12.8) C 100 200 10/200 (5.0) Total 340 1,000 128/1,000 (12.8) Prevalence of infection ([dagger]) Site * Cotton rat Cane mouse Rice rat
Total rodents A 5/14 12/20 0/2 17/36 B 30/41 15/37 0/4 45/82 C 2/2 4/7 0/1 6/10 Total 37/57 31/64 0/7 68/128 * Traps were set at site A on February 4 and 5; site B on February 4, 5, 11, and 12; and site C on February 5 and 12.
Four of 89 pygmy rice rat
samples tested were IgG positive (AN711258, AN717313, AN717307, and AN729965) (Table 1).
-- Seven specimens of the northern rice rat
were obtained in extreme western Hunt County (6 mi.
However, larvae and nymphs were found at these study sites attached to the guinea pig (Cavia aperea) and several species of sigmodontine rodents, including Azara's grass mouse (Akodon azarae), the yellow pygmy rice rat
(Oligoryzomys flavescens), the black-footed pygmy rice rat