translate English to French: Typical Lampetra richardsoni from Morrison Creek remain in fresh water throughout their entire life cycle and begin to reproduce in May and June (Youson and Beamish, 1991).
Dans le ruisseau Morrison, le Lampetra richardsoni type passe sa vie entière en eau douce et commence à se reproduire en mai et en juin (Youson et Beamish, 1991).