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dc.contributor.authorWissinger, Scotten_US
dc.contributor.authorSteinmetz, Jeffen_US
dc.contributor.authorBrown, Wendyen_US
dc.contributor.authorAlexander, J. Scotten_US
dc.date.accessioned2006-09-11T19:17:26Z
dc.date.available2006-09-11T19:17:26Z
dc.date.issued2004-01en_US
dc.identifier.citationWissinger, Scott; Steinmetz, Jeff; Alexander, J. Scott; Brown, Wendy; (2004). "Larval cannibalism, time constraints, and adult fitness in caddisflies that inhabit temporary wetlands." Oecologia 138(1): 39-47. <http://hdl.handle.net/2027.42/47698>en_US
dc.identifier.issn0029-8549en_US
dc.identifier.issn1432-1939en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/47698
dc.identifier.urihttp://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=14530962&dopt=citationen_US
dc.description.abstractThe fitness of non-feeding adult insects depends on energy accumulated during the larval stage. Larvae of the caddisfly Asynarchus nigriculus primarily feed on plant detritus, but supplement their diet with animal material obtained through cannibalism. Habitat drying constrains development in many populations of this species, and we hypothesized that cannibalism should accelerate development to facilitate timely metamorphosis. We manipulated larval diets in a field experiment by supplementing detritus with animal material, and in a laboratory experiment by varying animal material and detritus quality (conditioned vs unconditioned). We measured the effects of dietary manipulation on larval and pupal growth and development, the timing of metamorphosis, and adult fitness correlates. The results of the laboratory experiment suggest that this species can metamorphose with a detritus-only diet, but development is extremely protracted. In the field experiment, individuals with animal material in their diet had higher larval survival, shorter larval and pupal development times, and earlier emergence dates (7–10 days), than those without a supplement. This delay in emergence should have important effects on survival in natural populations where the difference between desiccation and successful emergence can be only a few days. Dietary supplementation also affected adult body mass (30–40% increase), female fecundity (30% more eggs), and proportional allocation to different adult body parts. Our results are consistent with recent growth-development models that predict coupled (earlier emergence and larger adults) rather than tradeoff responses (earlier emergence and smaller adults) to pre-threshold manipulation of larval diets. Many detritivorous aquatic insects supplement their diets with animal material, and our data provide evidence that this supplementation can have strong effects on fitness. This type of dietary supplementation should be especially important for taxa that do not feed as adults, and in temporary habitats that impose time constraints on larval development.en_US
dc.format.extent202257 bytes
dc.format.extent3115 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoen_US
dc.publisherSpringer-Verlagen_US
dc.subject.otherLifeSciencesen_US
dc.subject.otherHabitat Dryingen_US
dc.subject.otherDetritivoresen_US
dc.subject.otherLife Historyen_US
dc.subject.otherDietary Supplementen_US
dc.titleLarval cannibalism, time constraints, and adult fitness in caddisflies that inhabit temporary wetlandsen_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelNatural Resources and Environmenten_US
dc.subject.hlbsecondlevelMolecular, Cellular and Developmental Biologyen_US
dc.subject.hlbsecondlevelEcology and Evolutionary Biologyen_US
dc.subject.hlbtoplevelHealth Sciencesen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumBiology and Environmental Science Departments, Allegheny College, Meadville, PA 16335, USA; Rocky Mountain Biological Laboratory, P.O. Box 519, Crested Butte, CO 81224, USA; School of Natural Resources, University of Michigan, Ann Arbor, MI 48109, USAen_US
dc.contributor.affiliationotherBiology and Environmental Science Departments, Allegheny College, Meadville, PA 16335, USA; Rocky Mountain Biological Laboratory, P.O. Box 519, Crested Butte, CO 81224, USA; Department of Animal Biology, University of Illinois, Urbana, IL 61801, USAen_US
dc.contributor.affiliationotherBiology and Environmental Science Departments, Allegheny College, Meadville, PA 16335, USA; Rocky Mountain Biological Laboratory, P.O. Box 519, Crested Butte, CO 81224, USAen_US
dc.contributor.affiliationotherRocky Mountain Biological Laboratory, P.O. Box 519, Crested Butte, CO 81224, USAen_US
dc.contributor.affiliationumcampusAnn Arboren_US
dc.identifier.pmid14530962en_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/47698/1/442_2003_Article_1397.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1007/s00442-003-1397-yen_US
dc.identifier.sourceOecologiaen_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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