Repeated spawning and survival of male quinnat Salmon in New Zealand (note)

Abstract

In the Marine Department archives, early records (1930–41) of marked parr of quinnat salmon Oncorhynchus tshawytscha (Walbaum) show that some held in freshwater hatchery ponds in south Canterbury survived development of testes for two consecutive years, and that one fish developed testes for three consecutive years and gave indications that it might survive into the fourth. It is generally believed that all wild adults of this species die after one spawning.