The natural abundance of stable carbon isotope values (δ13C) of organic matter of marine macroalgae collected from Taiwan and its offshore islands (Penghu Islands) were analyzed in this study. These values ranged from -10.5 to -29.5‰. The highest δ13C value came from green algae (-10.5‰), Ulva pertusa while most algae exhibited values in the -14 to -19‰ range. On average, the δ13C values of red...

Plants and algae were found useful in the decontamination of water polluted with chlorinated phenolic compounds. An artificial wastewater contaminated with up to 350 ppm herbicide 2,4-dichlorophenol (2,4-DCP), was successfully treated using horseradish, potato and Ulva sp. (sea lettuce), amended with H2O2. Horseradish -mediated provided up to 99% removal of 2,4-DCP from model solution, while, p...

The settlement and adhesion of Navicula perminuta and Ulva linza to methyl-terminated alkanethiol self-assembled monolayers (SAMs) of increasing chain length has been investigated. Organisms were allowed to settle onto the monolayers and were subsequently exposed to hydrodynamic shear stress in order to determine their adhesion strength. Results show that as the SAM structure changes from amorp...

Fertilization and zygote formation in the multicellular green alga Ulva mutabilis Foyn were studied with the aid of transmission and scanning electron microscopes. The growth mutant 'slender' was used in this investigation. The initial contact between mating gametes is made by the flagella, whereupon cytoplasmic contact is established within a few seconds. Fusion of the cytoplasm of the 2 cells...

We tested the capacity of Ulva lactuca to mark N sources across large marine areas by measuring variation in its δ(15)N at several sites in the Gulf of Gaeta. Comparisons were made with the macroalga Cystoseira amentacea. Variation of δ(15)N values was assessed also in the coastal waters off the Circeo Natural Park, where U. lactuca and C. amentacea were harvested, as these waters are barely in...

This study aimed to evaluate the effects of diet containing the green macroalgae, Ulva lactuca, on the growth performance, feed utilization and body composition of African catfish Clarias gariepinus. Four experimental diets were formulated: D1 as a control group and D2, D3 and D4 which included 10%, 20% and 30% U. lactuca meal, respectively. 180 African catfish, weighing 9.59 ± 0.43 g, and with...

In recent years, Enteromorpha prolifera blooms had serious impacts on costal environments and fisheries in China. Nevertheless, the effects of E. prolifera on microbial ecology remain unknown. In this study, for the first time, an Illumina sequencing analysis was used to investigate bacterial communities in source water, aquaculture ponds with E. prolifera, and an aquaculture pond in which E. p...

Sea urchin gonads are a prized gourmet product in many areas of the globe, and wild populations threatened by increasing demand, making this species very desirable aquaculture. Due to unique needs each stage life cycle, viable food protocol that seeks satisfy while optimizing production profitability is required. The objective work was test formulated feed for sea urchins, through analysis soma...