Zebrafish reproduction vs. light dark cycle

Kerry Fulcher KerryFulcher at ptloma.edu
Thu Feb 7 17:38:11 EST 2002

Does anyone know if short day/long night photoperiods shuts down 
zebrafish reproduction (spermatogenesis or oogenesis)?  I don't 
know if zebrafish are normally year-round breeders in the wild or if 
they are photoperiod regulated, like many other fish.  If anyone has 
any insights on this, I would appreciate hearing what you know.  



Dr. Kerry Fulcher
Associate Professor of Biology
Point Loma Nazarene University
3900 Lomaland Dr.
San Diego, CA  92106
P  619.849.2651
F  619.849.2598 

"Everything can be taken from a man but one thing: the last of the
human freedoms-- to chose one's attitude in any given set of
circumstances, to chose one's own way." Viktor Frankl

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