Edge effects on the blowfly fauna (Diptera, Calliphoridae) of the Tijuca National Park, Rio de Janeiro, Brazil

Abstract

In this contribution we examine the diversity, abundance and species richness of Calliphoridae in the Tijuca National Park, Rio de Janeiro, RJ. Specimens were collected monthly between September 2009 and August 2010, using sardines as bait, in three points: A, on the forest edge (22°56'846"S 43°17'496"W), B, 700m from it (22°57'073"S 43°17'832"W) and C, 1,200m into the forest (22°57'321"S 43°18'031"W), evaluating the indicator species at each point and the anthropogenic influences and abiotic factors that determine species distribution. A total of 16,364 Calliphoridae were collected and 17 species were identified. Species abundance was strongly positively correlated with temperature. The greatest number of flies was collected at A, but in this point, diversity was lower and most individuals collected belonged to the dominant species. Point C, conversely, had the lower abundance and the highest diversity. Chrysomya megacephala, an urban and synanthropic species, was dominant at point A, whereas Laneela nigripes and Mesembrinella peregrina, typically forest species, were considered indicators at points B and C, respectively, showing that the anthropogenic influence is more intense at the forest edge.Keywords: Atlantic Forest, diversity, environmental preservation, insect fauna. Efeitos

A review on the occurrence of Cochliomyia hominivorax (Diptera: Calliphoridae) in Brazil

“…Additional information obtained from screwworm adult captures contributed to providing a more complete distribution of C. hominivorax in the country ( Figure 2D, Table 2). Adults of C. hominivorax have been caught in several sites, mainly by traps baited with carcasses (ALVES et al, 2014;FARIA et al, 2018), rotting viscera or other decaying material (KOLLER et al, 2002(KOLLER et al, , 2011SOUSA et al, 2010;GONÇALVES et al, 2011;GADELHA et al, 2015;PEREIRA DE SOUSA et al, 2015OLIVEIRA et al, 2016). Although decaying baits are not the best attractant to a fly species causing primary myiasis, this relatively inexpensive and simple choice has provided useful information on the distribution of C. hominivorax in Brazil (Figure 2E).…”