. Copeia. Ichthyology; Herpetology. New York, August 24, 1917. No. 47. Published to advance the Science of cold-blooded vertebrates DESTRUCTION OF LOG PERCH EGGS BY SUCKERS. While collecting eggs of the log perch, Percina caprodes, (Rafinesque), at Douglas Lake, Michigan, during the second week of July, schools of suckers, Catostomus commersoiui (Lacepede), were observed raiding the spawning grounds of the log perch. These suckers quietly entered the schools of log perch which were spawning in the shallow water near shore, and crowded the spawning fish aside to eat their recently laid eggs. Th
. Copeia. Ichthyology; Herpetology. New York, August 24, 1917. No. 47. Published to advance the Science of cold-blooded vertebrates DESTRUCTION OF LOG PERCH EGGS BY SUCKERS. While collecting eggs of the log perch, Percina caprodes, (Rafinesque), at Douglas Lake, Michigan, during the second week of July, schools of suckers, Catostomus commersoiui (Lacepede), were observed raiding the spawning grounds of the log perch. These suckers quietly entered the schools of log perch which were spawning in the shallow water near shore, and crowded the spawning fish aside to eat their recently laid eggs. The suckers were shy and retired to deep water when disturbed, returning again to the spawn- ing grounds as soon as opportunity offered. They were seen in and near the schools of log perch throughout the day, for nearly two Weeks. Twenty of these suckers were captured about 9:30 A. M., while feeding among the log perch. Five were killed at once. The remaining 15 were placed in a live-car some distance from the spawning grounds and killed at intervals during the next 24 hours. The entire alimentary canal of each suckers was examined immediately after each fish was killed, and the num- ber of log perch eggs noted. The data are tabulated below:. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Society of Ichthyologists and Herpetologists. [New York, N. Y. , etc. ] : American Society of Ichthyologists and Herpetologists
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectichthyology, bookyear
