Don Another example is Japanese beetle. Larvae feed only on roots of some grasses. Adults, which feed on foliage, are highly polyphagous. Many parasitic hymenoptera are similar to butterflies in that they have a very specific larval host but are generalist nectar feeders as adults.
Dan At 07:06 PM 12/21/2006, Liane Cochran-Stafira wrote: >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/ *************************************************** Daniel A. Herms Associate Professor Department of Entomology The Ohio State University Ohio Agricultural Research and Development Center 1680 Madison Ave. Wooster, OH 44691 office: 330-202-3506 cell: 330-749-5453 fax: 330-263-3686 email: [EMAIL PROTECTED]
