Fattorini S.,Azorean Biodiversity Group CITA A |
Fattorini S.,University of Milan Bicocca
Animal Biology | Year: 2013
A number of studies have attempted to investigate which species traits influence species proneness to extinction in vertebrates. By contrast, studies involving insects are scarce, because of difficulties in obtaining complex assessments of species extinction risk and measures of species traits. In this paper, a simple (binary) codification based on literature data and field observations was used to determine the importance of various traits (notably ecological preferences) in determining species vulnerability of the tenebrionid beetles inhabiting urban Rome (Italy). Vulnerability scores were calculated from measures of geographical, habitat and population rarity. Vulnerable species were distributed with similar proportions among different tenebrionid guilds, which suggests that conservation programs in urban ecosystems should be more addressed to the development of species-oriented actions than to the identification of priority habitats. Species traits accurately predicted species assignment to vulnerability classes, with some traits being particularly important in determining species vulnerability. Species associated with ruins and cellars, and which are typically fairly common in Rome, tend to be moderately or middle vulnerable. The identification of important sites for these species and definition of measures for population management would be useful strategies to preserve them. © Koninklijke Brill NV, Leiden, 2012.
Ferreira M.T.,University of Florida |
Ferreira M.T.,Azorean Biodiversity Group CITA A |
Borges P.A.V.,Azorean Biodiversity Group CITA A |
Scheffrahn R.H.,University of Florida |
Scheffrahn R.H.,Azorean Biodiversity Group CITA A
Journal of Economic Entomology | Year: 2012
The termite Cryptotermes brevis (Walker) (Isoptera: Kalotermitidae) is an urban pest that causes much damage to wood structures. Little has been done concerning the use of control methods for alates. C. brevis is known to have phototropic behavior during the dispersal flights, and this knowledge has been applied for preventative control in the Azores where this species is a serious urban pest. We were interested in determining whether there was a light wavelength preference by the alates of C. brevis to optimize light traps against this species. Six light wavelengths were tested: 395 nm (UV), 460-555 nm (white), 470 nm (blue), 525 nm (green), 590 nm (yellow), and 625 nm (red) in choice chambers, with dark chambers as controls. Two populations were tested, one population in Florida and one population in the Azores (Terceira Island). We found consistent results for both populations, with a preference for the light wavelengths in the white, blue, and green spectrum (460-550 nm). This information can be used to build more effective light traps that can be used by home owners in the Azores to help control this pest. © 2012 Entomological Society of America.