摘要：This paper reviews previous and present studies on the reproductive
characteristics of the ommastrephid squid Todarodes
pacifi cus, including captive studies of the mating and spawning
behavior, maturation process, fecundity and egg development,
and fi eld surveys near the spawning grounds. These and other
observations on the importance of seawater temperature near the
spawning grounds on stock size are discussed. We then discuss
the relationship between recent seasonal and annual changes in
the inferred extent of the spawning grounds based on water temperatures
around Japan and review a hypothesis explaining how
climatic regime shifts might affect the reproductive process and
result in stock fl uctuations.
