||Reproductive Rhythmicity of the Atlantic Silverside.
Middaugh, D. P. ;
Domey, R. G. ;
Scott, G. I. ;
||Environmental Research Lab., Gulf Breeze, FL. ;South Carolina Univ., Columbia.
South Carolina ;
Atlantic silverside ;
||Some EPA libraries have a fiche copy filed under the call number shown.
The reproductive periodicity of the Atlantic silverside, Menidia menidia, was studied at two locations on the North Edisto River estuary in South Carolina during March - July of 1976-1978. Spawning runs occurred in the upper intertidal zone and coincided precisely with daytime high tides. Time series analysis of daily changes in the intensity of spawning runs revealed a fortnightly reproductive periodicity. Additional analyses indicated that the observed reproductive rhythmicity in M. menidia may be mediated by a high tide- sunrise cue, that also occurs at fortnightly intervals.