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LABORATORY OF SPAWNING OF TOPSMELT ATHERINOPS AFFINIS, WITH NOTES ON CULTURE AND GROWTH OF LARVAE.
Citation:
Middaugh, D., B. Anderson, AND M. Hemmer. LABORATORY OF SPAWNING OF TOPSMELT ATHERINOPS AFFINIS, WITH NOTES ON CULTURE AND GROWTH OF LARVAE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-92/218 (NTIS PB92195759), 1992.
Description:
Topsmelt, Atherinops affinis, were spawned repeatedly in the laboratory during May-July, 1989. eriodic "temperature spike" from the holding temperature of -18 degrees C, up to -20.5 degrees C, introduced at 7 to 9 day intervals, resulted in maximum production of viable embryos on the fourth morning after the spike. xamination of embryonic stages and comparison to known developmental rates far A. affinis embryos revealed that spawning was generally nocturnal, occurring between 1900 and 0500 hrs. urvival of embryonic and larval A. Affinis cultured at 21 +/- 1 degree C and 20 +/-0 2 salinity was excellent (>80%). arval growth curve was developed for the first 24 days post-hatch.
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LABORATORY OF SPAWNING OF TOPSMELT ATHERINOPS AFFINIS, WITH NOTES ON CULTURE AND GROWTH OF LARVAE.