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REPRODUCTIVE RHYTHMICITY OF THE ATHERINID FISH, 'COLPICHTHYS REGIS', FROM ESTERO DEL SOLDADO, SONORA, MEXICO
Citation:
Russell, G., D. Middaugh, AND M. Hemmer. REPRODUCTIVE RHYTHMICITY OF THE ATHERINID FISH, 'COLPICHTHYS REGIS', FROM ESTERO DEL SOLDADO, SONORA, MEXICO. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-87/310 (NTIS PB88196258).
Description:
The reproductive rhythmicity of the false grunion, Colpichthys regis, was observed in the Estero del Soldado, Mexico during October 1982 through January 1983. Spawning runs occurred at approximately 2-week intervals during daytime high tides. These high tides coincided with new and full moons. Spawning only occurred when predicted tidal heights were equal to or greater than 0.73 m above MLW. Eggs were deposited in the upper intertidal zone in locations that appeared to provide protection from predators, thermal stress and desiccation.