Anne C Jones, Mason C Martin, Tappey H Jones, Roger Ramirez-Barrios, Ashleigh B Smythe
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VOLATILES IN FECES OF RATS INFECTED WITH THE TAPEWORM HYMENOLEPIS DIMINUTA.
It has been known for over 25 yr that feces from rats infected with the tapeworm Hymenolepis diminuta are more attractive to tenebrionid beetle intermediate hosts than feces from uninfected rats. Although it has been demonstrated that a volatile chemical (or chemicals) in infected rat feces attracts the intermediate host Tribolium confusum, the volatile chemical(s) have never been identified. This study aimed to identify and compare the volatiles in the feces of rats before and after infection with H. diminuta. Four 8-wk-old female Sprague Dawley rats were infected with H. diminuta. Fecal samples pre- and postinfection were collected, and volatiles were trapped by vacuum on a polymer adsorbent and identified with gas chromatography-mass spectrometry analysis. Limonene was detected in preinfection but not postinfection feces. Five carboxylic acids were isolated only from postinfection feces. Butanoic acid was found in the greatest relative amount, but also 3-methylbutanoic acid, 2-methylbutanoic acid, pentanoic acid, and hexanoic acid were found. This is the first report identifying the volatiles found in the feces of rats infected with H. diminuta.
期刊介绍：
The Journal of Parasitology is the official peer-reviewed journal of the American Society of Parasitologists (ASP). The journal publishes original research covering helminths, protozoa, and other parasitic organisms and serves scientific professionals in microbiology, immunology, veterinary science, pathology, and public health. Journal content includes original research articles, brief research notes, announcements of the Society, and book reviews. Articles are subdivided by topic for ease of reference and range from behavior and pathogenesis to systematics and epidemiology. The journal is published continuously online with one full volume printed at the end of each year.
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