Plasma progesterone levels and corpus luteum morphology in the female prairie dog (Cynomys ludovicianus).

摘要: Abstract Plasma progesterone levels in female prairie dogs were determined by a radioimmunoassay specific for progesterone. samples taken before estrus, at during the luteal phase, and anestrus from females maintained all year laboratory. Progesterone also plasma laboratory two pregnant three postparturient captured field. low estrus continued estrus. They rose on first week after to 0.8 ng/ml or above this level 9–14 weeks following Gestation is 35 days species. of 1.0 7 their arrival These had uterine scars showing that they delivered litters captured. Two be time capture. later reabsorbed fetuses (determined laparotomy). values these except one value which occurred 3 her capture reabsorption was progress. The cells corpus lutea (CL) nonpregnant, pregnant, well-developed rings cytoplasmic basophilia but as CL regressed pattern became disorganized disappeared. function not known. long phase found compared those other species mammals. This annually breeding rodent reported have longer than period gestation.