The 96 hrs LC50 values for malathion and glyphosate was determined to be 9.1 ppm and 5.5 ppb, respectively on the fairy shrimp, Streptocephalus dichotomus preadults. The 1/5 of 96 hrs LC50 of malathion (2.0 ppm) and glyphosate (1.1 ppb) respectively was chosen. The sub lethal toxic effect of each of these pesticides on the acetylcholinesterase activity (AchE) of S. dichotomus was assayed on day...

The present study investigates seasonal variations of leachate composition and its toxic potency on different species, such as the brine shrimp Artemia franciscana (formerly Artemia salina), the fairy shrimp Thamnocephalus platyurus, the estuarine rotifer Brachionus plicatilis and the microalgal flagellate Dunaliella tertiolecta. In specific, leachate regularly collected from the municipal land...

Additional References to be included. Cohen, R.G., (2010) Primer registro del anostraco de altura Branchinecta papillata (Crustacea Branchiopoda: Anostraca) para Argentina, y actualización de la biodiversidad de anostracos en el país. Acta Zoológica Lilloana, 54, 36–43. Cohen, R.G., (2012) Morphological diversity displayed by high altitude Branchinecta papillata (Anostraca) and additional morph...

Causes of over-dispersed barren "fairy circles" that are often surrounded by ca. 0.5 m tall peripheral grasses in a matrix of shorter (ca. 0.2 m tall) grasses in Namibian grasslands remain mysterious. It was hypothesized that the fairy circles are the consequence of self-organizing spatial vegetation patterning arising from resource competition and facilitation. We examined the edaphic properti...

Ever since the beginning of the 21st century, the fairy tale has not only become a staple of the small and silver screen around the globe, it has also migrated into new media, overwhelming audiences with imaginative and spectacular retellings along the way. Indeed, modern fairy-tale adaptations pervading contemporary popular culture drastically subvert, shatter, and alter the public’s understan...