Search results for "Artemia franciscana"
showing 3 items of 3 documents
Effect of methylparaben in Artemia franciscana.
2017
In this study, the toxicity of methylparaben (MeP) an emerging contaminant, was analysed in the sexual species Artemia franciscana, due to its presence in coastal areas and marine saltworks in the Mediterranean region. The acute toxicity (24 h-LC50) of MeP in nauplii was tested and its chronic effect (9 days) evaluated by measuring survival and growth under two sublethal concentrations (0.0085 and 0.017 mg/L). Also, the effect on several key enzymes involved in: antioxidant defences (catalase (CAT) and gluthathion-S-transferase (GST)), neural activity (cholinesterase (ChE)) and xenobiotic biotransformation (carboxylesterase (CbE), was assessed after 48 h under sublethal exposure. The result…
Time-dependent effects of polystyrene nanoparticles in brine shrimp Artemia franciscana at physiological, biochemical and molecular levels
2019
Micro- (<5 mm) and nanoplastics (<1 μm) are emerging threats for marine ecosystems worldwide. Brine shrimp Artemia is recognized as a suitable model among planktonic species for studying the impact of polystyrene nanoparticles (PS NPs) through short and long-term bioassays. Our study aims to evaluate the time-dependent effects of cationic amino-modified PS-NH (50 nm) in A. franciscana after short- (48 h) and long-term exposure (14 days). For this purpose, nauplii were exposed to a concentration range of PS-NH (0.1, 1, 3 and 10 μg/mL) in natural sea water (NSW), and physiological, biochemical and molecular responses were investigated. Short-term exposure to PS-NH caused a decrease in nauplii…
Parasitismo por cestodos en Artemia spp. y su implicación en la invasión biológica de Artemia franciscana en la región Mediterránea
2015
La presente Tesis Doctoral trata del fenómeno del parasitismo en el crustáceo Artemia y la implicación de los cestodos en el proceso de invasión biológica de la especie americana Artemia franciscana Kellogg, 1906 en la región Mediterránea. El crustáceo Artemia (Branchiopoda, Anostraca) es el invertebrado más conspicuo de los ecosistemas acuáticos hipersalinos de todo el mundo y un valioso recurso trófico para las poblaciones de aves acuáticas que residen en dichos ecosistemas. El uso generalizado de la especie americana A. franciscana en la acuicultura y acuariofilia han provocado su introducción y expansión fuera de su área nativa, localizándose en la actualidad en todos los continentes y …