The digestion of protein and carbohydrate by the stream detritivore, Tipula abdominalis (Diptera, Tipulidae)
dc.contributor.author | Martin, Michael M. | en_US |
dc.contributor.author | Martin, J. S. | en_US |
dc.contributor.author | Merritt, Richard W. | en_US |
dc.contributor.author | Kukor, Jerome J. | en_US |
dc.date.accessioned | 2006-09-11T19:19:49Z | |
dc.date.available | 2006-09-11T19:19:49Z | |
dc.date.issued | 1980-09 | en_US |
dc.identifier.citation | Martin, M. M.; Martin, J. S.; Kukor, J. J.; Merritt, R. W.; (1980). "The digestion of protein and carbohydrate by the stream detritivore, Tipula abdominalis (Diptera, Tipulidae)." Oecologia 46(3): 360-364. <http://hdl.handle.net/2027.42/47733> | en_US |
dc.identifier.issn | 0029-8549 | en_US |
dc.identifier.issn | 1432-1939 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/47733 | |
dc.description.abstract | The digestive system of larvae of Tipula abdominalis (Diptera, Tipulidae), a stream detritivore, is poorly adapted for the digestion of the major polysaccharides in its diet, but well adapted for the digestion of protein. These crane fly larvae are unable to digest the major cell wall polysaccharides of higher plants, i.e., cellulose, hemicellulose and pectin. The only polysaccharides toward which the midguts of T. abdominalis exhibited any activity were α-amylose and laminarin, indicating that polysaccharide digestion is restricted to α-1,4-and β-1,3-glucans. The most concentrated source of these two classes of carbohydrates in submerged leaf litter would be associated fungal tissue. The midgut of T. abdominalis is strongly alkaline throughout, with a maximum pH near 11.5 in a narrow zone near the midpoint. Proteolytic activity in the midgut is extraordinarily high, and the pH optimum for midgut proteolytic activity is above 11. We conclude that the high alkalinity and high proteolytic activity observed in T. abdominalis larvae are manifestations of a highly efficient protein-digesting system, a system of crucial importance to a nitrogen-limited organism which must derive its nitrogen from a resource in which much of the limited nitrogen present is in a “bound” form in complexes of proteins with lignins and polyphenols. | en_US |
dc.format.extent | 578151 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Springer-Verlag | en_US |
dc.subject.other | Life Sciences | en_US |
dc.subject.other | Ecology | en_US |
dc.subject.other | Plant Sciences | en_US |
dc.title | The digestion of protein and carbohydrate by the stream detritivore, Tipula abdominalis (Diptera, Tipulidae) | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Natural Resources and Environment | en_US |
dc.subject.hlbsecondlevel | Molecular, Cellular and Developmental Biology | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Division of Biological Sciences, University of Michigan, 48109, Ann Arbor, Michigan | en_US |
dc.contributor.affiliationum | Division of Biological Sciences, University of Michigan, 48109, Ann Arbor, Michigan | en_US |
dc.contributor.affiliationum | Division of Biological Sciences, University of Michigan, 48109, Ann Arbor, Michigan | en_US |
dc.contributor.affiliationother | Department of Entomology, Michigan State University, 48825, East Lansing, Michigan, USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/47733/1/442_2004_Article_BF00346265.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/BF00346265 | en_US |
dc.identifier.source | Oecologia | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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