This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: . most concentrated in retina, n those other two pineal…. Period, clock, banal. ← ← As day length grows longer… 12-14 hrs. the light period and the light peak (when you are absolutely sensitive to light. ← ← When u have the pulse of light, it’s called the clock shift. A single pulse of light can trigger spring like response in birds. ← ← Clock-shift: changing the ← ← SOME TROPICAL BIRDS DO NOT FOLLOW 12 MO CYCLES. SOOTY TERNS ON ASCENSION ISLAND ON THE EQUATOR BREED EVERY ← ← IN BIRDS: THE TESTES ENLARGE GREATLY DURING THE BREEDING SEASON. REPRESENTS A NEW PUBERTY EVERY YEAR. ←...
View Full Document
- Spring '09
- Severe food restriction, innate internal clock, Melatonin peaks, Light Dark Light, chronically elevated corticosterone