Time filter

Source Type

Palacios-Vargas J.G.,Laboratorio Of Ecologia Y Sistematica Of Microartropodos | Deharveng L.,French Natural History Museum
Zootaxa | Year: 2014

The genus Australonura Cassagnau 1980 is newly recorded from South America. The Patagonian species Paleonura limnophila (Cassagnau and Rapoport, 1962) and Paleonura friasica Cassagnau and Oliveira, 1990 are redescribed from type material and recombined in Australonura. A new species, A. paraguayensis sp. nov., is described from Paraguay and assigned to Australonura for its head tubercle arrangement. It differs from other species of the genus by its adjacent but separate dorso-internal tubercles of Abd. V. Copyright © 2014 Magnolia Press.

Palacios-Vargas J.G.,Laboratorio Of Ecologia Y Sistematica Of Microartropodos | Montejo-Cruz M.,Laboratorio Of Ecologia Y Sistematica Of Microartropodos
Revista Mexicana de Biodiversidad | Year: 2014

Aethiopella pilarandresae sp. nov. is described and illustrated. It is characterized by its small size, 6 mandibular teeth, small mucro and postantennal organ with 20-27 vesicles. It is compared with the other species from America and a key for the world species is included.

Uribe-Hernandez R.,Mexican Institute of Petroleum | Juarez-Mendez C.H.,Laboratorio Of Ecologia Y Sistematica Of Microartropodos | De Montes Oca M.A.,Mexican Institute of Petroleum | Palacios-Vargas J.G.,Laboratorio Of Ecologia Y Sistematica Of Microartropodos | And 2 more authors.
Revista Mexicana de Biodiversidad | Year: 2010

We evaluated invertebrates, with an emphasis on Collembola, as bioindicators of soil quality in hydrocarboncontaminated soils in southeastern Mexico. We carried out 2 sampling periods in summer-fall of 2004 in 4 parcels of 2 hectares each. From each parcel we processed 8 samples using the Berlese-Tullgren funnel technique and 4 using the flotation method. For Collembola we calculated the following ecological indices: abundance, richness, the Shannon index (H'), dominance (λ), equitativity (J') and the similarity index (S). We also performed the following soil analyses: total petroleum hydrocarbon content (HTP), polycyclic aromatic hydrocarbon content (HAP), porosity, pH, CE, MO, N, P, K, CIC, and texture. In contaminated areas, HTP exceeded the safe limits sets by Mexican environmental legislation. In all studied areas we observed Collembola, mites, and dipteran larvae. The variation in abundance and diversity of these insects can be used as biondicators of the level of contamination and quality of the soil. We found very low abundances of Crustacea, Formicidae, Aranae, Diptera, Pseudoscopionida, and Diplopoda. The Collembola families that were most widely distributed were Sminthurididae and Isotomidae. Our correlation analysis showed that their diversity is affected by HAP level (fluoranthene, naphthalene, pyrene, chrysene and phenanthrene).

Discover hidden collaborations