Determining which reproductive isolating barriers arise first between geographically isolated lineages is critical to understanding allopatric speciation. We examined behavioral isolation among four recently diverged allopatric species in the orangethroat darter clade (Etheostoma: Ceasia). We also examined behavioral isolation between each Ceasia species and the sympatric rainbow darter Etheost...

The aim of this paper was to evaluate the effect of the tinctures obtained by the aerial parts of three indigenous Eryngium species (Eryngium planum, E. campestre and E. maritimum) by an acute inflammation model in rats. The anti-inflammatory properties of saponins, coumarins, flavonoids, caffeic acid and plant sterols are well – known. Previous data on Eryngium species reported the anti-exudat...

Most of the genetic studies on streptomycetes have been done with cultures erroneously designated as Streptomyces coelicolor. To determine whether these cultures are genetically homologous with the S. violaceoruber nominifer, their deoxyribonucleic acids (DNA) were analyzed, and selected pairs of mutants were crossed. The four cultures used in genetic studies, and called S. coelicolor in the li...

AIM At least seven North American tribes specifically mention the use of Eryngium (typically roots) as an anti-snake venom therapy. As snake envenomation is an endemic, life-threatening medical risk, is there a scientific basis for the Native American ethnomedicine? Could this be demonstrated in an assay amenable to mechanistic evaluation and high throughput screening for later isolation and po...

Recent studies show that hydrogen peroxide free radicals have an important role in the renal damage induced by Gentamicin. Previously we studied the hydrogen peroxide scavenging activity of Eryngium caucasicum. This work was conducted to evaluate the possible renoprotective effect of Eryngium caucasicum against Gentamicin-induced renotoxicity. Extracts at the doses 200 and 400 mg/kg/day for 10 ...

A new species of Dasyomma Macquart, D. chrysopilum sp. nov., is described from Chile (Malleco and Ñuble Provinces). This species differs from all other known species in having dense golden pilosity on the abdominal tergites of both sexes. Dasyomma basale Malloch is redescribed, with the female described for the first time.

Many endangered plants such as Eryngium viviparum (Apiaceae) present a poor germination rate. This fact could be due to intrinsic and extrinsic seed variability influencing germination and dormancy of seeds. The objective of this study is to better understand the physiological mechanism of seed latency and, through artificial intelligence models, to determine the factors that stimulate germinat...

This study was performed to evaluate the antimicrobial activities of extracts of Bidens pilosa, Galinsoga ciliata, and Eryngium foetidum against 6 clinical strains of Helicobacter pylori in vitro and in vivo. Broth microdilution method was used in vitro. In vivo, Swiss mice were inoculated with H. pylori and divided into 5 groups; the control group received the vehicle and the four others recei...