278 TELFORD: MULTIMAMMATE RAT POPULATION BIOLOGY IN TANZANIA SPARSE THICK rIE"AQ CTIIDDQ I 1 CTIIDDl POST-REP. - NON-REP. r- 4 1 22 Figure 22. Structure of the female cohort from the university campus P. natalensis population in October 1984 from three study sites which differed in quality of cover and, presumably, available food. FIELD GRASS FIELD GRASS FIELD GRASS S- ................. DEC JAN FEB FEB 1982 MAR MAR 1983 REPROD. POST-REP. NON-REPROD. Figure 23. Structure of the female cohort from the university campus P. natalensis population collected from fallow maize fields or uncultivated grass areas from December 1982-March 1983. 100-T 50+ U I I