Don, The parasite that causes schistosomyosis Schistosoma manzoni has several different hosts before it finally enters the human liver. This isn't quite the same as host specific juveniles and generalist adults, but it does show change in hosts during development.
Butterflies provide many examples of of host specific juveniles growing into generalist adults. The monarch caterpillar is pretty much limited to milkweed (although I have seen them on parsly in my garden), while the adult butterflies use a wide variety of plants. For the Karner Blue butterfly, there is only one host for the caterpillars, the wild lupine. Again, the adults use many plants. Liane At 12:23 PM 12/21/2006, Don Schoolmaster wrote: >Ecolog-L community, > >I am looking for information on parasites or herbivores whose host range >changes through ontogeny. Specifically, is the phenomenon of host specific >juveniles growing into generalist adults common? Does anyone know of any >specific examples? This topic is a bit out of my field and I fear I am >searching under the wrong terms. > >Thanks >Don S. *************************** Liane Cochran-Stafira, Ph.D. Associate Professor Department of Biology Saint Xavier University 3700 West 103rd Street Chicago, Illinois 60655 phone: 773-298-3514 fax: 773-298-3536 email: [EMAIL PROTECTED] http://faculty.sxu.edu/~cochran/
