The FCCL is currently conducting studies to characterize and better understand Delta Smelt spawning behavior, of which very little is understood. While we have previously found that Delta Smelt generally spawn at night from February through May, spawning behavior has never been observed in the wild and has not yet been formally described. Furthermore, Delta Smelt eggs have never been found in nature. Thus, it is unclear how and where Delta Smelt naturally spawn. In our current experiments, we are conducting studies that characterize Delta Smelt spawning behavior under naturalistic conditions and examining spawning substrate preferences. The findings of these studies will be critical to continued recovery and conservation efforts.
Lindberg JC, Tsai YJJ, Kammerer BD, Baskerville-Bridges B, Hung TC (2020) Spawning microhabitat selection in wild-caught delta smelt Hypomesus transpacificus under laboratory conditions, Estuaries and Coasts 43(1), 174-181.
LaCava M, Fisch K, Nagel M, Lindberg JC, May B, Finger AJ (2015) Spawning behavior of cultured delta smelt in a conservation hatchery, North American Journal of Aquaculture 77(3), 255-266