Functional feeding groups of Brazilian Ephemeroptera nymphs :ultrastructure of mouthparts

In order to assign 18 mayfly taxa found in streams in the Macaé River basin into Functional Feeding Groups, the anatomy of their feeding apparatus was examined through scanning electron microscopy. Also, habitat preference and field observations of feeding behaviour were made to assure FFG assignmen...

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Bibliographic Details
Published in:Annales de limnologie 2006-01, Vol.42 (2), p.87-96
Main Authors: Baptista, D. F., Buss, D. F., Dias, L. G., Nessimian, J. L., Da Silva, E. R., De Moraes Neto, A. H.A., de Carvalho, S. N., De Oliveira, M. A., Andrade, L. R.
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Baetodes
Biological and medical sciences
Cloeodes
Ephemeroptera
FFG
Fresh water ecosystems
Fundamental and applied biological sciences. Psychology
Hagenulopsis
Insecta
Invertebrates
Lachlania
Leptohyphes
Leptophlebiidae
neotropical streams
scanning electron microscopy
Synecology
Thraulodes
Tricorythopsis
ultrastructure of mouthparts
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Summary:In order to assign 18 mayfly taxa found in streams in the Macaé River basin into Functional Feeding Groups, the anatomy of their feeding apparatus was examined through scanning electron microscopy. Also, habitat preference and field observations of feeding behaviour were made to assure FFG assignment. Ephemeropteran taxa were classified into five FFGs: Passive Filterers - Hylister plaumanni; Active Filterer - Lachlania boanovae and Campylocia sp.; Brushers - Askola froehlichi, Farrodes carioca, Hagenulopsis spp., Massartela brieni, Miroculis froehlich, Miroculis sp., and Thraulodes spp; Grazers - Cloeodes spp., Americabaetis spp., Camelobaetidius spp.and Baetodes spp.; Scrapers - Leptohyphes pereirae, Leptohyphes spp., Tricorythodes spp. and Tricorythopsis spp. Species of the three best represented mayfly families in south-east Brazil were assigned to different FFGs (Leptophlebiidae - Brushers; Baetidae - Grazers and Leptohyphidae - Scrapers), with one exception, Hylister plaumanni (Leptophlebiidae; Active filterers). This information is useful to understand the role of mayflies in stream ecosystems, and to help the development of ecological theories for tropical streams.
ISSN:0003-4088
2100-000X
DOI:10.1051/limn/2006013