Borg and Van Veen, 1982


Borg, B. and Van Veen, T. (1982) Seasonal effects of photoperiod and temperature on the ovary of the three-spined stickleback, Gasterosteus aculeatus L. Can. J. Zool., pp. 3387-3393

Associated characteristics

Species Development state Trait Primary Data Secondary Data
Gasterosteus aculeatus Female Oocyte development Simultaneous development of batches of eggs Synchronous
Gasterosteus aculeatus Female Onset of oogenesis Slight increase in October-November [Relative ovarian weights are low in autum and early spring] ['April', 'May', 'June', 'October', 'November']
Gasterosteus aculeatus Female Intensifying oogenesis activity May ['May']
Gasterosteus aculeatus Female Maximum GSI value Mean of 22; up to 25% [In June] 22.0 percent
Gasterosteus aculeatus Female Resting period After the breeding season the weights decrease until the lowest level is attained in October 2.0 months
Gasterosteus aculeatus Spawning conditions Spawning season The breeding season is in late spring-summer ['April', 'May', 'June', 'July', 'August', 'September']