Effects of a long or an increasing photoperiod on the initiation of ovarian recrudescence during the preparatory period in the catfish, Heteropneustes fossilis (Bloch).
D000818:Animals; D005260:Female; D005399:Fishes / Q000502:physiology*; D008027:Light; D009929:Organ Size; D010053:Ovary / Q000033:anatomy & histology / Q000502:physiology*; D010063:Ovum; D010507:Periodicity; D012621:Seasons