Abstract
Environmental cues: photoperiod, temperature, and the lunar cycle among others, acting through several endocrine systems including the thyroid, set the timing of smoltification. The thyroxine surge associated with smoltification is precisely timed to coincide with the new moon phase of the lunar cycle. The careful timing of the thyroxine surge suggests that a highly organized sequential pattern of hormone release and interaction leads directly to the orderly progression of smoltification-related developmental events. The elucidation of this pattern and its morphological, physiological, and behavioral consequences is essential to the complete understanding of parr—smolt transformation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
