preserved in 10 percent formalin in a glass vessel. These contents were then
washed with running water and sieved. After rinsing, the contents were
placed on petri dish for micro analysis (35). From autopsied animals 50-100
ml sample of gut contents was taken into 70 percent alcohol for lab analysis
(21). Ovaries were examined only for visible corpora lutea in earlier stages of
the study. Periods of breeding and littering were determined by dating
observation of development of secondary sexual characteristics, observing
the occurrence of visible pregnancies in females and back dating ages of
fetuses to determine dates of conception