Incomplete Mixing in the Fate and Transport of Arsenic at a River Affected by Acid Drainage     

Paula Guerra  Christian Gonzalez  Cristian Escauriaza  Gonzalo Pizarro  Pablo Pasten 《Water, air, and soil pollution》2016,227(3):73

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Spread of the yellow‐legged hornet Vespa velutina nigrithorax du Buysson (Hymenoptera: Vespidae) across Northern Spain          下载免费PDF全文

A. Goldarazena  I. P. de Heredia  P. Romon  J. C. Iturrondobeitia  M. Gonzalez  S. Lopez 《EPPO Bulletin》2015,45(1):133-138

The yellow‐legged hornet Vespa velutina nigrithorax du Buysson (Hymenoptera: Vespidae) is an Asian native species which has now established in parts of Europe. Since its detection in France in 2005 it has spread quickly across the country and also spread to the Iberian Peninsula. This paper compiles the most recent data about its spread and distribution on the Spanish mainland. The efficacy of using Véto‐Pharma© traps as a control method is also discussed.  相似文献   

Interactions between the tillage system and crop rotation on the crop yield and weed populations under arid conditions     

Mansoor Sarani  Mostafa Oveisi  Hamid Rahimian Mashhadi  Hassan Alizade  Jose Luise Gonzalez‐Andujar 《Weed Biology and Management》2014,14(3):198-208

Field experiments were conducted in Iran in order to determine the interactions between the tillage system and crop rotation on weed seedling populations and crop yields from 2002 to 2005. No tillage, shallow tillage and deep tillage were the main plots and three crop sequences comprising continuous wheat (W‐W), wheat–canola–wheat–canola (C‐W) and wheat–safflower–wheat–safflower (S‐W) were the subplots. Bromus japonicus, Carthumus lanatus, Polygonum aviculare, Lolium temulentum and Avena ludoviciana were found to be the dominant species. The initial weed population in 2002 was estimated at 65 seedlings per m² and B. japonicus (～35 seedlings per m²) was the most abundant species, followed by A. ludoviciana and L. temulentum. The dominant weed species mostly did not favor the combination of S‐W and C‐W with any tillage type. For the B. japonicus population, S‐W in combination with moldboard plowing indicated the lowest seedling population. In conclusion, the crop sequence in combination with tillage would help to control troublesome weed species. Safflower and canola were determined to be effective in reducing the grass weeds. The inclusion of these crops in rotation also increased the total revenue of the cropping systems because of the higher sale price of canola and safflower.  相似文献   

Suppression of Botrytis cinerea on necrotic grapevine tissues by early‐season applications of natural products and biological control agents     

Carlos Calvo‐Garrido  Inmaculada Viñas  Philip AG Elmer  Josep Usall  Neus Teixidó 《Pest management science》2014,70(4):595-602

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Potential secondary inoculum sources of Botrytis cinerea and their influence on bunch rot development in dry Mediterranean climate vineyards     

Carlos Calvo‐Garrido  Josep Usall  Inmaculada Viñas  Philip AG Elmer  Elena Cases  Neus Teixidó 《Pest management science》2014,70(6):922-930

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Comparison of the Effect of the Aromatase Inhibitor, Anastrazole, to the Antioestrogen, Tamoxifen Citrate, on Canine Prostate and Semen     

G Gonzalez  C Guendulain  C Maffrand  C Gobello 《Reproduction in domestic animals》2009,44(S2):316-319

This study compared the efficiency of the aromatase inhibitor, anastrazole, with the antioestrogenic receptor blocker, tamoxifen, on normal (NRL) and hyperplastic prostate glands. Forty healthy dogs were classified as NRL (n = 18) or abnormal (ABN) with benign prostate hyperplasia (n = 22). The dogs were randomly assigned to one of the following six groups, treated for 60 days; oral placebo for normal (NRL-PLC; n = 6) and abnormal (ABN-PLC; n = 6), oral anastrazole 0.25–1 mg/day, for normal (NRL-ANZ, n = 6) and abnormal (ABN-ANZ, n = 8) and oral tamoxifen citrate 2.5–10 mg/day for normal (NRL-TMX; n = 6) and abnormal (ABN-TMX; n = 8) dogs. The dogs were evaluated before treatment and then monthly for 4 months. At the end of the treatment, the prostatic volume decreased by 28.5 ± 4.3%, 21.6 ± 6.3% and 0.7 ± 1.0% in the ABN-TMX, ABN-ANZ and ABN-PLC (p < 0.01), respectively. From then on, prostatic volume began to increase without reaching pre-treatment values at the end of the study. In the ABN animals, there were no differences for this parameter between ANZ and TMX treatment (p > 0.1), whereas in the NRL animals ANZ produced a less pronounced decrease (p < 0.05), libido, testicular consistency and scrotal diameter decreased during treatment in the TMX group (p > 0.05). These parameters and sperm volume, count, motility and morphological abnormalities remained unaltered throughout the study in the ANZ and PLC groups (p > 0.05). There were no haematological nor biochemical side effects. Anastrazole might offer a safe and effective alternative for the medical management of dogs with benign prostatic hyperplasia.  相似文献   

Helicobacter spp. from gastric biopsies of stranded South American fur seals (Arctocephalus australis)     

Goldman CG  Loureiro JD  Matteo MJ  Catalano M  Gonzalez AB  Heredia SR  Zubillaga MB  Solnick JV  Cremaschi GA 《Research in veterinary science》2009,86(1):18-21

Gastrointestinal lesions with uncertain etiology have been widely described among pinnipeds. The aim of our study was to investigate the presence of Helicobacter spp. in the gastric mucosa of South American fur seals (Arctocephalusaustralis). Gastric biopsies from thirteen seals, stranded on the shores of the Southwestern Atlantic Ocean in Argentina, were evaluated for the presence of Helicobacter spp. by PCR and DNA sequence analysis. Six gastric biopsies were positive for Helicobacter spp. Pairwise sequence comparisons showed less than 95% identity to novel Helicobacter spp. described from pinnipeds from North America and Australia. However, phylogenetic analysis revealed that the South American fur seal sequences clustered with 99-100% homology with H. cetorum, a species isolated from dolphins and whales. The presence of H. cetorum in pinnipeds, if confirmed by its isolation from the gastric mucosa of these mammals, demonstrates the wide host range of this bacterium in the marine environment.  相似文献   

Development of a biologically immortalized equine stem cell line     

Rodolfo Nino-Fong  Blanca P. Esparza Gonzalez  Juan Carlos Rodriguez-Lecompte  William Montelpare  Laurie McDuffee 《Canadian journal of veterinary research》2021,85(4):293

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Determinants for successful reforestation of abandoned pastures in the Andes: Soil conditions and vegetation cover     

Sven Günter  Paul Gonzalez  Guido Álvarez  Nikolay Aguirre  Ximena Palomeque  Frank Haubrich  Michael Weber 《Forest Ecology and Management》2009

The Andes of Ecuador are known for their outstanding biodiversity but also as the region with the highest deforestation rate in South America. This process is accompanied by accelerating degradation and loss of environmental services. Despite an extraordinary richness in native tree diversity, more than 90% of all forest plantations established in Ecuador consist of exotic species, primarily Eucalyptus spp. and Pinus spp. This is mainly due to the lack of information about the autecological and synecological requirements of the native species.  相似文献   

Floristic and ecological differences between recent and ancient forests growing on non-acidic soils     

Delphine Sciama  Laurent Augusto  Jean-Luc Dupouey  Maya Gonzalez  Concepción Moares Domínguez 《Forest Ecology and Management》2009

The aim of this work was to investigate differences in soil chemistry and understory composition between recent forests (sites afforested in the last 170 years) and ancient forests growing on non-acidic soils. The study was carried out on hardwood forests at moderate elevation (400–600 m asl) in the Jura Mountains (N.E. France) on four main pedological substrates with different characteristics. The floristic composition of 127 stands from recent forests (n = 65) or ancient forests (n = 62) was surveyed. Some functional traits and the Ellenberg indicator values of the surveyed species were recorded. In addition, the topsoil from 30 stands was analysed. The composition of the flora was analysed by Detrended Correspondence Analysis and the species which were typical of one class of forest age were identified using a chi-square (χ²) test. The difference between forest classes for plant traits, their indicator values, or soil chemistry was tested using the generalized linear model and Bonferroni t-tests (or Kruskall–Wallis tests). The floristic composition of the ancient forests was significantly different from that of the recent forests and was characterized by a high occurrence of shrub species in recent forests. These differences were associated with higher specific leaf area, low-range seeds dispersal, and some life forms like geophytes. There was no clear difference in soil chemistry between the two classes of forests, except for δ¹⁵N values. The weakness of the difference in the soil between ancient and recent forests suggested that changes in soil chemistry caused by a former agricultural land use were not responsible for the differences in understory composition recorded. The differences in functional traits between the two forest classes supported this conclusion. We finally concluded that (i) past land use modifies the vegetation composition of current forests, even on neutral soils and that (ii) in our context, biological filters were probably responsible for these changes.  相似文献