An Experimental Study On the Timing of Breeding and Migration in the Three-Spined Stickleback

III. The influence of temperature on development of the gonads between December and May ...................... 119 g i. The rate of development at different temperatures ........ 119 2. The influence of low and high temperatures on maturation at various times between December and May............... 121 i 3. Gonadal developmen t and nestbuilding at tempera tures lower than 90 C. 123 a. Gonadal development ................... 123 b. Nestbuilding ....................... 124 4. Discussion ......................... 126