Pineal Function and Oviposition in Japanese Quail: Superior Cervical Ganglionectomy and Photoperiod
Charles L. Ralph 1,
Harry J. Lynch 1,
G. Craig Gundy 1, and
Laurence Hedlund 2
1 Department of Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
2 Department of Animal Science-Genetics, University of Illinois, Urbana
Bilateral ablation of the superior cervical ganglia appears to deprive the pineal body of sympathetic innervation. Although this procedure presumably interrupts the neural circuit for transmission of optic information to the pineal, oviposition rates of ganglionectomized females exposed to stimulatory (15-hour) or to nonstimulatory (4-hour) daily photoperiods do not differ from those of the controls.