276 TELFORD: MULTIMAMMATE RAT POPULATION BIOLOGY IN TANZANIA TABLE 10. Proportion of total female sample post-reproductive or reproductive October 1981- February 1985. % Total females reproductive or post-reproductive Month 1981-82 1982-83 1983-84 1984-85 October 24 14 21 56 November 24 20 26 December 15 11 12 5 January 13 7 9 40 February 6 38 69 33 March 4 38 75 April 0 22 64 May/June 90 79 61 July 75 48 79 August 60 91 51 September 23 61 30 * * sample taken from grass habitat only TABLE 11. Proportion of total female sample gravid or lactating October 1981-February 1985. % Total females gravid or lactating Month 1981-82 1982-83 1983-84 1984-85 October 1 6 0 0 November 1 0 0 December 0 0 0 0 January 0 0 0 9 February 0 1 50 0 March 0 0 10 April 0 9 33 May/June 76 77 37 July 64 44 49 August 50 83 25 September 5 0 0