The effects of alterations in photoperiod on ovarian development and spawning time in the rainbow trout (Salmo gairdneri) C. WHITEHEAD, N. R. BROMAGE, J. R. M. FORSTER, A. J. MATTY, J. RALPH and Susan TAYLORAnn. Biol. anim. Bioch. Biophys., 18 4 (1978) 1035-1043DOI: https://doi.org/10.1051/rnd:19780543