Echinostoma trivolvis: mating behavior of adults raised in hamsters.
Echinostoma trivolvis adults grown in golden hamsters were treated in vitro with [3H]-tyrosine to label sperm and transplanted to uninfected hamsters alone or with four to six unlabeled adults. After 4-5 days, worms were recovered, processed for autoradiography, and observed for silver grains over their seminal receptacles. Of 11 worms transplanted singly, 6 (55%) self-inseminated. In multiple-worm situations, 7 of 12 (58%) labeled worms self-inseminated, and in the process the 12 labeled worms inseminated only 5 of 35 (14%) possible unlabeled worms. E. trivolvis adults self-inseminated when isolated and both self- and cross-inseminated in groups, suggesting an unrestricted mating pattern. These results were compared with the mating patterns of other digenetic trematodes.
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Department of Biological Sciences, Western Illinois University, Macomb 61455.
D000818:Animals; D006224:Cricetinae; D004449:Echinostoma / Q000254:growth & development / Q000302:isolation & purification / Q000502:physiology*; D005260:Female; D007314:Insemination; D008297:Male; D008647:Mesocricetus; D012098:Reproduction; D012908:Snails; D013045:Species Specificity; D013094:Spermatozoa / Q000502:physiology*; D013737:Testis / Q000502:physiology; D014316:Tritium; D014443:Tyrosine / Q000378:metabolism
D014316:Tritium; D014443:Tyrosine