Seaweed preference by the Brazilian endemic gastropod Astraea latispina was examined in the laboratory to evaluate the role of secondary metabolites in determining food choice. Of three species of seaweeds examined, Plocamium brasiliense was highly preferred; less so were Sargassum furcatum and Dictyota cervicornis were preferred less. Extracts and/or pure major metabolites of the two potential...

Two new species of pterygosomatid mites parasitizing lizards of the family Agamidae are described: Pterygosoma aqabensis sp. nov. from Pseudotrapelus aqabensis Melnikov et al. and Pterygosoma dhofarensis sp.nov. from Pseudotrapelus dhofarensis Melnikov and Pierson both from Arabian Peninsula. Pterygosoma aqabensis sp. nov. is most closely related to P. dhofarensis sp. nov. but differs by the pr...

in the present study ethanol and water extracts of 15 seaweeds, dictyota dichotoma var. velutricata, dictyota indica, iyengaria stellata, padina pavonia, sargassum swartzii, sargassum variegatum, stoechospermum marginatum, stokeyia indica, jolyna laminarioides, caulerpa taxifolia, halimeda tuna, ulva fasciata, ulva lactuca, solieria robusta, and melanothamnus afaqhusainii, were evaluated for th...

The functioning of carotenoids in photosynthesis is discussed in relation to the reaction mechanism. The energy transfer process from the allenic carotenoid, fucoxanthin, to chl a was intensively investigated in the newly isolated fucoxanthin-chl a / c protein assembly (FCPA) from a brown alga Dictyota dichotoma. The transfer time was shorter than 3 ps at 15°C. The energy level responsible for ...

Measurements of chlordecone, an organochlorine insecticide with high persistence in natural environments, have been carried out on several species and genus macroalgae Guadeloupe Martinique. These data were statistically compared to determine the ability Dictyota accumulate other collected macroalgae. The comparisons conducted between phylogenetic groups (Rhodophyta, Phaeophyta Chlorophyta), si...