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Dinâmica populacional de quatro espécies de Dysdercus (Hemiptera, Pyrrhocoridae) e a fenologia das plantas hospedeiras

Populational dynamic of four species of Dysdercus (Hemiptera, Pyrrhocoridae) and the phenology of the host plants

Resumo

The food cycle and geographical variation of Dysdercus diet were studied as strategy elements of trophic resources exploitation. The species used were D. fulvoniger, D. maurus, D. mendesi and D. ruficollis. A random sampling method was adopted at two regular sampling areas (Vassouras and Itaguaí, Rio de Janeiro, Brazil). The places sampled only once were selected based on the potential migration of Dydercus. Various transects were determined, with 99 places; these transects involved six morpho-climatic-phytogeographical domains: Atlantic Tropical, Cerrado, Caatinga, Amazonic Equatorial, Pantanal and "Planalto das Araucárias". The food cycle of Dysdercus at Vassouras is based on the exploitation of reproductive structures (flowerand fruit) of some Malvaceae, Boraginaceae, Compositae and Cucurbitaceae. The total diet includes other host plant structures. Fifty-three plant species (16 families) are explored as food by the insect along the 99 places of sampling. The habitats of Dysdercus are characterized by climatic variations, geographical distribution and phenology of host plants, and also by the dispersion of seeds.

Hemiptera; Pyrrhocoridae; Dysdercus; populational dynamic; phenology; host plants


Hemiptera; Pyrrhocoridae; Dysdercus; populational dynamic; phenology; host plants

Dinâmica populacional de quatro espécies de Dysdercus (Hemiptera, Pyrrhocoridae) e a fenologia das plantas hospedeiras

Populational dynamic of four species of Dysdercus (Hemiptera, Pyrrhocoridae) and the phenology of the host plants

J. R. de AlmeidaI; R. de XerezII; A. CaldasIII

IDepartamento de Ecologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68020, 21949-900 Rio de Janeiro, Rio de Janeiro, Brasil

IIInstituto de Biologia, Universidade Federal Rural do Rio de Janeiro, Antiga Rodovia Rio-São Paulo KM 47, 23851-920 Itaguaí, Rio de Janeiro, Brasil

IIIInstituto de Biologia, Universidade Estadual do Rio de Janeiro, Rua Franscisco Xavier, 524 PHLC, sala 500, 20550-013 Rio de Janeiro, Rio de Janeiro, Brasil

ABSTRACT

The food cycle and geographical variation of Dysdercus diet were studied as strategy elements of trophic resources exploitation. The species used were D. fulvoniger, D. maurus, D. mendesi and D. ruficollis. A random sampling method was adopted at two regular sampling areas (Vassouras and Itaguaí, Rio de Janeiro, Brazil). The places sampled only once were selected based on the potential migration of Dydercus. Various transects were determined, with 99 places; these transects involved six morpho-climatic-phytogeographical domains: Atlantic Tropical, Cerrado, Caatinga, Amazonic Equatorial, Pantanal and "Planalto das Araucárias". The food cycle of Dysdercus at Vassouras is based on the exploitation of reproductive structures (flowerand fruit) of some Malvaceae, Boraginaceae, Compositae and Cucurbitaceae. The total diet includes other host plant structures. Fifty-three plant species (16 families) are explored as food by the insect along the 99 places of sampling. The habitats of Dysdercus are characterized by climatic variations, geographical distribution and phenology of host plants, and also by the dispersion of seeds.

Key words: Hemiptera, Pyrrhocoridae, Dysdercus, populational dynamic, phenology, host plants

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Recebido em 05.IV.1991; aceito em 25.XI.1994.

  • BENSON, W.W. 1978. Resource partitioning in passion vine butterflies. Evolution, 32 (3): 493-518.
  • BRAUN-BLANOUET, J. 1950. Sociologia vegetal. Buenos Aires, Acme Agency, 421 p.
  • BROWN JR., W.L. & E.O WILSON. 1956. Character displacement. Syst. Zool. 5: 49-64.
  • CARTIER, J.J. 1968. Factors of host plant specificity and artificial diets. Bull. Entomol. Soc. Amer. 14 (1): 18-21.
  • DOESBURG JR., P.H. 1968. A revision of the New World species of Dysdercus Guérin Menéville (Heteroptera, Pyrrhocoridae). Heiden, Zool. Verhandel., 218p.
  • EDWARDS, F.J. & S.D. WRANTTEM. 1981. Ecologia das interações entre insetos e plantas. São Paulo, EDUSP, 71p.
  • GILBERT, L.E. & M.C. SINGER. 1976. Butterfly ecology. Ann. Rev. Ecol. Syst. 6: 365-97.
  • HUECK, K. 1972. As florestas da América do Sul. Rio de Janeiro, Nacional, 466p.
  • KENNEDY, J.S. 1968. Phuysiological condition of the host plant and susceptibility to aphid attack. Bull. Entomol. Soc. Amer. 14 (1): 18-21.
  • LANCIANI, C.A. 1970. Resource partitioning in species of the mite gebus Eylais. Ecology 51: 338-342.
  • MACARTHUR, R.M. 1958. Population ecology of some warblers of northeastern coniferous forest. Ecology 39: 599-619.
  • MACARTHUR, R.M. & E.O. WILSON. 1967. The theory of island biogeography. New Jersey, Princeton, 203p.
  • PIANKA, E.R. 1978. Evolutionary ecology. New York, Harper & Row, 397p.
  • PRICE, D.W. 1975. Insect ecology. New York, Wiley, 514p.
  • SCALES, F.M. & A.P. HARRISON. 1920. Boric acid modification of the Kjeldah method for crop and soil analysis. J. Ind. Eng. Chem. 12: 350.
  • SHAPIRO, A.M. & R.T. CARDÉ. 1970. Habitat selection and competition among sibling species of satyrid butterflies. Evolution 24: 48-54.
  • SOUTHWOOD, T.R.E. 1971. Ecological methods. With particular reference to the study of insect populations. London, Chapman & Hall, 391p.

Datas de Publicação

  • Publicação nesta coleção
    24 Jul 2009
  • Data do Fascículo
    1993

Histórico

  • Aceito
    25 Nov 1994
  • Recebido
    05 Abr 1991
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