Mackenzie et al, 1989


Mackenzie and Thomas and Farrar. (1989) Seasonal changes in thyroid and reproductive steroid hormones in female channel catfish (Ictalurus punctatus) in pond culture. Aquaculture, pp. 63-80

Associated characteristics

Species Development state Trait Primary Data Secondary Data
Ictalurus punctatus Female Onset of oogenesis GSI Increase sugnificantly from September to October and November to January ['January', 'September', 'October', 'November']
Ictalurus punctatus Female Intensifying oogenesis activity April ['April']
Ictalurus punctatus Female Maximum GSI value 10.9 [June, July] 10.9 percent
Ictalurus punctatus Female Resting period About 2 [GSI was low during the summer months: July and August] 2.0 months
Ictalurus punctatus Spawning conditions Spawning season June and July but most spawning activity apperaed to have ended by June ['June', 'July']