Figure 5.2 Nervous system of a praying mantis

1. Figure 5.2 Nervous system of a praying mantis

2. Figure 5.4 The blowfly’s nervous system and digestive system

3. Figure 5.5 Record of neural and behavioral activity of a calling cricket

4. Figure 5.6 Circadian rhythms in cricket calling behavior

5. Figure 5.7 Early in the night, the long-winged, flight-capable form of Gryllus firmus has higher concentrations of JH than the short-winged form

6. Figure 5.8 The cricket nervous system

7. Figure 5.9 A master clock may, in some species, act as a pacemaker that regulates the many other mechanisms controlling circadian rhythms within individuals

8. Figure 5.10 The genetics of biological clocks in mammals and fruit flies

9. Figure 5.11 Mutations of the per gene affect the circadian rhythms of fruit flies

10. Figure 5.12 Expression of the gene that codes for PK2 in the SCN

11. Figure 5.13 Circadian control of wheel running by white rats changes when the brains of rats are injected with PK2

12. Figure 5.14 Naked mole rats lack a circadian rhythm

13. Figure 5.15 Circannual rhythm of the golden-mantled ground squirrel

14. Figure 5.16 Circannual rhythm in a stonechat

15. Figure 5.18 A cycle of photo-sensitivity

16. Figure 5.19 A hormonal response to light

17. Figure 5.20 Changes in the song control regions of the rufous-winged sparrow’s brain occur after summer rainfall

18. Figure 5.22 Photoperiod affects testis size in the red crossbill

20. Figure 5.23 Dominant male odors change female mate preferences in the house mouse

21. Figure 5.24 Regulation of infanticide by male house mice

22. Figure 5.25 A hormonal effect on infanticidal behavior in laboratory mice

23. Figure 5.26 Testosterone and progesterone concentrations in three categories of male California mice

24. Figure 5.27 Testosterone and the control of sexual motivation in male Japanese quail (Part 1)

25. Figure 5.27 Testosterone and the control of sexual motivation in male Japanese quail (Part 2)

26. Figure 5.28 Female fruit flies mated to males unable to supply sex peptide are as likely to copulate again within 48 hours as are virgin females

27. Figure 5.29 An associated reproductive pattern in the green anole and a dissociated reproductive pattern in the red-sided garter snake

28. Figure 5.33 The chemical structure of testosterone and its diverse effects on physiology and behavior

29. Zysling et al. 2006

31. Figure 5.36 Testosterone and territorial behavior (Part 1)

32. Figure 5.36 Testosterone and territorial behavior (Part 2)

33. Figure 5.39 Testosterone and the long-term maintenance of mating behavior