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Functional feeding groups of Brazilian Ephemeroptera nymphs :ultrastructure of mouthparts

Published online by Cambridge University Press:  15 February 2009

D. F. Baptista ,
D. F. Buss ,
L. G. Dias ,
J. L. Nessimian ,
E. R. Da Silva ,
A. H.A. De Moraes Neto ,
S. N. de Carvalho ,
M. A. De Oliveira  and
L. R. Andrade
D. F. Baptista
Affiliation:
Laboratório de Avaliação e Promoção da Saúde Ambiental, Departamento de Biologia, IOC FIOCRUZ, Av. Brasil, 4.365, Manguinhos, RJ, Brazil, CEP 21045-900.
D. F. Buss
Affiliation:
Laboratório de Avaliação e Promoção da Saúde Ambiental, Departamento de Biologia, IOC FIOCRUZ, Av. Brasil, 4.365, Manguinhos, RJ, Brazil, CEP 21045-900.
L. G. Dias
Affiliation:
Laboratório de Avaliação e Promoção da Saúde Ambiental, Departamento de Biologia, IOC FIOCRUZ, Av. Brasil, 4.365, Manguinhos, RJ, Brazil, CEP 21045-900.
J. L. Nessimian
Affiliation:
Laboratório de Entomologia, Departamento de Zoologia, CCS - UFRJ, Ilha do Fundão, Rio de Janeiro, Brazil, CEP 21944-970.
E. R. Da Silva
Affiliation:
Laboratório de Avaliação e Promoção da Saúde Ambiental, Departamento de Biologia, IOC FIOCRUZ, Av. Brasil, 4.365, Manguinhos, RJ, Brazil, CEP 21045-900.
A. H.A. De Moraes Neto
Affiliation:
Laboratório de Insetos Aquáticos, Departamento de Ciências Naturais, CCBS - UNIRIO, Av. Pasteur, 458, 4° andar, Urca, Rio de Janeiro, Brazil, CEP 22290-240.
S. N. de Carvalho
Affiliation:
Laboratório de Insetos Aquáticos, Departamento de Ciências Naturais, CCBS - UNIRIO, Av. Pasteur, 458, 4° andar, Urca, Rio de Janeiro, Brazil, CEP 22290-240.
M. A. De Oliveira
Affiliation:
Núcleo de Biologia e Controle de Endo e Ectoparasitas de Interesse Médico e Veterinário, Departamento de Biologia, IOC FIOCRUZ and Lab. de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, CBB - UENF, Brazil, CEP 28013-602.
L. R. Andrade
Affiliation:
Instituto de Pesquisa e Desenvolvimento, UNIVAP.
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Abstract

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.

Keywords

EphemeropteraFFGneotropical streamsscanning electron microscopyultrastructure of mouthparts
Type
Research Article
Information
Annales de Limnologie - International Journal of Limnology , Volume 42 , Issue 2 , June 2006 , pp. 87 - 96
Copyright
© Université Paul Sabatier, 2006

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