Resumo
The environmental transformations constitute the principal cause of changes in biodiversity. This make the comparative studies between natural and altered environments very important. This research compare the beetle fauna at the following areas: isolated forest fragment and pasture at the secondary stage of succession. Beetles were collected using four pitfall traps baited with cattle meat in each area, fortnightly from November 1998 to April 1999. A total of 17,721 individuals from 30 families of Coleóptera in forest and 6,597 individuals belanging to 32 families in pasture was collected. The Sorensen index was used to calculate similarity, and Shannon index to calculate diversity. The qualitative similarity found was 0.70 and the quantitative similarity was 0.48. The mean Shannon diversity index found was 1.90 for forest and 2.01 for pasture; these values were not significantly different by T test. It was concluded that the beetle decomposer fauna collected was representative in both environments, which also contributes in the decomposition process of organic matter, in soil fertilization and also in control ling egg and larvae populations of parasitic flies.
Coleoptera; necrophagous; pitfall traps; forest fragment; pasture; decomposition
Coleoptera; necrophagous; pitfall traps; forest fragment; pasture; decomposition
Coleopterofauna em floresta e pastagem no norte do Paraná, Brasil, coletada com armadilha de solo
Forest and pasture coleopterofauna in North of Paraná, Brazil, collected using pitfull traps
Ísis Meri MedriI; José LopesII
ICurso de Graduação em Ciências Biológicas, Laboratório de Entomologia, Departamento de Biologia Animal e Vegetal, Universidade Estadual de Londrina. Caixa Postal 6001, Campus Universitário, 86051-990 Londrina, Paraná, Brasil
IIDepartamento de Biologia Animal e Vegetal, Universidade Estadual de Londrina. Caixa Postal 6001, Campus Universitário, 86051-990 Londrina, Paraná, Brasil. E-mail: jea@uel.br
ABSTRACT
The environmental transformations constitute the principal cause of changes in biodiversity. This make the comparative studies between natural and altered environments very important. This research compare the beetle fauna at the following areas: isolated forest fragment and pasture at the secondary stage of succession. Beetles were collected using four pitfall traps baited with cattle meat in each area, fortnightly from November 1998 to April 1999. A total of 17,721 individuals from 30 families of Coleóptera in forest and 6,597 individuals belanging to 32 families in pasture was collected. The Sorensen index was used to calculate similarity, and Shannon index to calculate diversity. The qualitative similarity found was 0.70 and the quantitative similarity was 0.48. The mean Shannon diversity index found was 1.90 for forest and 2.01 for pasture; these values were not significantly different by T test. It was concluded that the beetle decomposer fauna collected was representative in both environments, which also contributes in the decomposition process of organic matter, in soil fertilization and also in control ling egg and larvae populations of parasitic flies.
Key words: Coleoptera, necrophagous, pitfall traps, forest fragment, pasture, decomposition
Texto completo disponível apenas em PDF.
Full text available only in PDF format.
AGRADECIMENTOS. Ao Sr. Ayrde Moura Bello pela identificação da amostra das famílias de microcoleópteros obtidos; a José Marcelo Torezan pelo auxílio nos cálculos dos índices ecológicos e valiosas sugestões; a Waldir Medri, José Carlos Dalmas e José da Costa Soeiro pelos cálculos estatísticos; a Cláudio Müller pela revisão do artigo e ao CNPq pela concessão de Bolsa de Iniciação Científica.
Recebido em 11.V.2000; aceito em 20.VI.2001.
- Bergstrom, B.C.; R.L. Maki & B.A. Werner. 1976. Small dung beetles as biological control agent: laboratory studies of beetle action on trichostongylid eggs in sheep and cattle feces. Proc. Helminthol. Soc. Wash. 43:171-174.
- Bianchini, E.; J.A. Pimenta & F.A.M. Santos, (no prelo). Spatial and temporal variation in the canopy cover in a tropical semi-deciduous forest. Brazil. Arch. Biol. Technol., Curitiba, 44(1).
- Borror, D.J. & D.M. DeLong. 1969. Introdução ao estudo dos insetos. São Paulo, Edgard-Blücher Ltda, 1ª ed., 653p.
- Diham, R.K.; P.M. Hammond; J.H. Lawton; P. Eggleton & N.E. Stork. 1998. Beetle species responses to tropical forest fragmentation. Ecol. Monogr. 68(3):295-323.
- Embrapa (Empresa Brasileira de Pesquisa Agropecuária). 1984. Levantamento de reconhecimento de solos do Estado do Paraná. Curitiba, Embrapa, 791p.
- Estrada, A. & R. Coates-Estrada. 1991. Howling monkeys (Alouatta palliata) dung beetles (Scarabaeidae) and seed dispersal: ecological interactions in the tropical rain florest of Los Tuxtlas, Veracruz, Mexico. Jour. Trop. Ecol. 7:459-474.
- Halffter, G. 1991. Historical and ecological factors determining the geographical distribuition of beetles (Coleoptera: Scarabaeidae: Scarabaeinae). Folia Entomol. Mexicana 82:195-238.
- Klein, B.C. 1989. Effects of forest fragmentation on dung and carrion beetle cpmmunities in central Amazonia. Ecology 6:1715-1725.
- Lopes, J.; I. Conchon; S.K. Yuzawa & R.R.C. Kuhnlein. 1994. Entomofauna do Parque Estadual Mata dos Godoy: II. Scarabaeidae (Coleoptera) coletados em armadilhas de solo. Semina, Londrina, 15(2):121-127.
- Maack, R. 1981. Geografia Física do Estado do Paraná. Rio de Janeiro, J. Olympio, 2ª ed., 450p.
- Magurran, A.E. 1988. Ecological Diversity and Its Measurement. New Jersey, Princeton, 179p.
- Nealis, V.G. 1977. Habitat association an community analysis of south Texas dung beetles (Coleoptera: Scarabaeidae). Canad. Jour. Zool. 55:138-147.
Datas de Publicação
-
Publicação nesta coleção
30 Abr 2009 -
Data do Fascículo
Jul 2001
Histórico
-
Aceito
20 Jun 2001 -
Recebido
11 Maio 2000
