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Brazilian Journal of Biology

Print version ISSN 1519-6984

Braz. J. Biol. vol.70 no.1 São Carlos Feb. 2010 

The edge and interior of a forest fragment harbor different species of flies



Adriana Cristina Pedroso Ferraz

Universidade Federal Rural do Rio de Janeiro (UFRRJ). Email:



A study conducted by A.C.P. Ferraz and colleagues from different universities and one research institution in Rio de Janeiro investigated the possibility of the distribution of certain species of flies, commonly known as blowflies, be related to the consequences of fragmentation in forest areas. The researchers realized that the so-called edge effects, that changes in plant structure, reduction of habitat and climatic changes generated at the edges of forest fragmentation influence the presence / absence of certain species of flies.

A survey conducted in Tinguá Biological Reserve, an area of the Atlantic forest Nova Iguaçu (RJ), which houses flora and fauna very diverse, we used traps baited with attractive prepared to attract the species of interest. More than eight thousand copies of 26 different species were collected monthly from June 2006 to May 2007 on points ranging from edge to forest interior. There were great differences in wealth and abundance of these flies in the various sections and also the presence of exotic species (species introduced by man or accidentally settle in places not usually found), the most abundant in the forest edge.

This report published in Brazilian Journal of Biology (vol. 70.1, 2010) notes how impacts in tropical forests allow the dispersal of non-native species and contribute to the elimination of the most connected preserved areas.

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