Is the diet of a typical shredder related to the physical habitat of headwater streams in the Brazilian cerrado?

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dc.creatorFerreira, Wander Ribeiro
dc.creatorSantos, Raphael Ligeiro Barroso
dc.creatorMacedo, Diego Rodrigues
dc.creatorHughes, Robert M.
dc.creatorKaufmann, Philip R.
dc.creatorOliveira, Leandro Gonçalves
dc.creatorPereira, Marcos Callisto de Faria
dc.date.accessioned2018-04-04T11:52:59Z
dc.date.available2018-04-04T11:52:59Z
dc.date.issued2015-03
dc.description.resumoMacroinvertebrates are important for processing leaf detritus in temperate streams, but studies about their role in tropical streams often present conflicting results. Via digestive tract analyses, we assessed the diets of Phylloicus sp. larvae (Trichoptera: Calamoceratidae), collected from streams of two southeastern Brazil river basins (Araguari, Sa˜o Francisco). We classified gut contents as coarse particulate organic matter (CPOM), fine particulate organic matter (FPOM), algae, animal tissue, vascular plant tissue and mineral material. We hypothesized that the diets of Phylloicus larvae would be related to the physical habitat of the streams (e.g., riparian vegetation, organic matter availability and morphological characteristics), larval size and river basin. Although FPOM content predominated in both basins, we found greater CPOM content in Phylloicus larvae of Upper Sa˜o Francisco sites, and this food item was related to greater riparian vegetation canopy density. The FPOM content was greater in larvae of Upper Araguari sites, and this food item was correlated with greater instream brush cover. Algae, animal tissue, vascular plant tissue and mineral material were very rare in the digestive tracts, and therefore could not be explained. These results indicate the importance of riparian vegetation structure in modulating feeding habitats of macroinvertebrates. We conclude that the Phylloicus larvae had more flexibility in what they eat than we might expect based on their traditional classification as shredders. Therefore, trusting in published classifications, ignoring regional or local differences, may be inaccurate. Instead, regional studies of feeding habits are needed for accurate classifications of invertebrate taxa into trophic guilds.pt_BR
dc.identifier.citationFERREIRA, Wander R.; LIGEIRO, Raphael; MACEDO, Diego R,; HUGHES, Robert M.; KAUFMANN, Philip R.; OLIVEIRA, Leandro G.; CALLISTO, Marcos. Is the diet of a typical shredder related to the physical habitat of headwater streams in the Brazilian cerrado? Annales de Limnologie, Paris, v. 51, n. 2, p. 115-124, Mar. 2015.pt_BR
dc.identifier.doi10.1051/limn/2015004
dc.identifier.issn0003-4088
dc.identifier.issne- 2100-000X
dc.identifier.urihttp://repositorio.bc.ufg.br/handle/ri/14308
dc.language.isoengpt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentInstituto de Ciências Biológicas - ICB (RG)pt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectGut contentspt_BR
dc.subjectAquatic macroinvertebratespt_BR
dc.subjectTrophic guildspt_BR
dc.subjectTropical streamspt_BR
dc.subjectStream habitat conservationpt_BR
dc.titleIs the diet of a typical shredder related to the physical habitat of headwater streams in the Brazilian cerrado?pt_BR
dc.typeArtigopt_BR

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