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Observations on the Biology of the Variegated Darter, Etheostoma Variatum (Kirtland)

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dc.creator May, Bruce en_US
dc.date.accessioned 2005-10-01T02:39:32Z
dc.date.available 2005-10-01T02:39:32Z
dc.date.issued 1969-03 en_US
dc.identifier.citation The Ohio Journal of Science. v69 n2 (March, 1969), 85-92 en_US
dc.identifier.issn 0030-0950 en_US
dc.identifier.uri http://hdl.handle.net/1811/5456
dc.description Author Institution: Ohio State University en_US
dc.description.abstract Between June, 1964, and October, 1965, field and laboratory studies were conducted on the reproductive biology and larval development of variegated darters inhabiting Big Darby Creek, Pickaway County, approximately 25 miles southwest of Columbus, Ohio. These studies lead to the following conclusions. Prior to spawning, the darters migrate upstream from their wintering areas in the pools to the spawning riffles. The majority of the males become ripe when the water temperature reaches 40°F, whereas most females do not ripen until water temperature approaches 50°F. Spawning activity is confined mainly to the period from April 15 to May 10 when the water temperature is between 50°F and 70°F. Integration of field and laboratory data indicates that the eggs are deposited in the sand that accumulates behind rocks and boulders in the upper parts of riffles. Males, in a laboratory environment, exhibit both intra- and inter-specific territorial defense. The spawning behavior includes the typical darter ritual of following, nosing, and quivering movements, with the female choosing the spawning site. Eggs deposited in sand behind and between rocks and in fine gravel hatch in approximately 14 days at the prevailing temperatures. Fry, fed a diet of brine shrimp larvae, attain the juvenile stage within six weeks after hatching. en_US
dc.format.extent 771578 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.rights Reproduction of articles for non-commercial educational or research use granted without request if credit to The Ohio State University and The Ohio Academy of Science is given. en_US
dc.title Observations on the Biology of the Variegated Darter, Etheostoma Variatum (Kirtland) en_US