Caracterização da fauna helmintológica de tamanduá-bandeira (Myrmecophaga tridactyla) e tamanduá-mirim (Tamandua tetradactyla) atropelados nas rodovias BR-050 e BR-455 (Minas Gerais, Brasil) / [Helmintological characterization of giant anteater (Myrmecophaga tridactyla) and lesser anteater (Tamandua tetradactyla) roadkilled on BR-050 and BR-455 highways (Minas Gerais, Brazil)]

O tamanduá-bandeira (Myrmecophaga tridactyla) e o tamanduá-mirim (Tamandua tetradactyla) são mamíferos xenartros amplamente distribuídos no território nacional. Apesar disso, suas populações estão em constante ameaça, principalmente o primeiro, categorizado como vulnerável de acordo com classificação da União Internacional para Conservação da Natureza. Diante disso e da escassez de estudos com endoparasitas nesses animais, objetivou-se descrever a helmintofauna dessas duas espécies de tamanduá, utilizando espécimes atropelados nas rodovias BR-050 e BR-455, região do Triângulo Mineiro, Minas Gerais, Brasil. Os animais foram submetidos à necropsia, tendo seus órgãos e conteúdo intestinal e estomacal examinados para recuperação de helmintos. Os parasitos coletados foram identificados com base em suas características morfológicas e morfométricas. As espécies/os gêneros caracterizados para M. tridactyla e T. tetradactyla, suas respectivas prevalências, bem como órgãos de origem, foram: Gaphidiops dissimilis (33,33% e 0%) no estômago; Gigantorhynchus echinodiscus (25% e 66,66%) no intestino delgado; Physaloptera magnipapilla (50% e 66,6%) no estômago; e Mathevotaenia spp. (25% e 66,66%) no intestino delgado. Physaloptera magnipapilla foi a espécie com os maiores índices de infecção, e novo registro de localização foi registrado para o nematódeo Graphidiops dissimilis. Detectou-se uma provável sobreposição da área de vida dos tamanduás estudados, bem como uma helmintofauna característica da região.(AU)

Myrmecophaga tridactyla, giant anteater and Tamandua tetradactyla, collared anteater are nationally widespread mammals. Despite that, their populations are in danger, especially the first one, categorized as vulnerable according to the International Union for Conservation of Nature. This study reports the occurrence of helminths in these two anteater species using road killed specimens from BR-050 and BR-455 highways, Triângulo Mineiro region, Minas Gerais state, Brazil. The species were necropsied, and their gastrointestinal organs and contents were opened and examined for parasite recovery. The identification was based on morphological and morphometric features. The species/ genera found for M. tridactyla and T. tetradactyla, their prevalence, as well the organs, were: Gaphidiops dissimilis (33.33% and 0%) in stomach; Gigantorhynchus echinodiscus (25% and 66.66%) in small intestine; Physaloptera magnipapilla (50% and 66.6%) in stomach and Mathevotaenia spp. (25% and 66.66%) in small intestine. Physaloptera magnipapilla was the most common species and a new location was reported for Graphidiops dissimilis. There is a probable overlap in the home range of these animals and a local helminth diversity was described on the study site.(AU)

Unravelling remote sensing signatures of plants contaminated with gasoline and diesel: an approach using the red edge spectral feature.

Pipeline systems used to transport petroleum products represent a potential source of soil pollution worldwide. The design of new techniques that may improve current monitoring of pipeline leakage is imperative. This paper assesses the remote detection of small leakages of liquid hydrocarbons indirectly, through the analysis of spectral features of contaminated plants. Leaf and canopy spectra of healthy plants were compared to spectra of plants contaminated with diesel and gasoline, at increasing rates of soil contamination. Contamination effects were observed both visually in the field and thorough changes in the spectral reflectance patterns of vegetation. Results indicate that the remote detection of small volumes of gasoline and diesel contaminations is feasible based on the red edge analysis of leaf and canopy spectra of plants. Brachiaria grass ranks as a favourable choice to be used as an indicator of HCs leakages along pipelines.