There are 396 species of benthic marine algae reported for both Pacific and Caribbean coasts of Costa Rica (84 Chlorophyta or green algae, 51 Ochrophyta-Phaeophyceae or brown algae, 1 Xanthophyceae
or yellow-green algae, and 260 Rhodophyta or red algae), from which 287 are recorded from the Caribbean coast (Bernecker, 2009).
Triportheus nematurus' diet was mainly composed of insects and organic matter during the drought period; of superior vegetables (leaves and roots) and Euglenophyceae algae during the filling period; and of insects, fruits and seeds and Xanthophyceae
algae during the flood period.
The isolated species had various shapes and sizes and belonged to Cyanophyceae, Chlorodendrophyceae, Xanthophyceae
, and Bacillariophyceae (Table 1).
The digestive tract of the new Dyje specimen was full of algae (Vaucheria sp.; Xanthophyceae
) and epiphytic diatoms of the genus Gomphonema (almost solely).
Benthic microalgae from tributaries and the main channel of the river (Table 2) consisted of thirty (30) genera belonging to five groups namely; Chlorophyceae (6), Euglenophyceae (2), Xanthophyceae
(1), Bacillariophyceae (19) and Cyanophyceae (2).
The remaining algal classes were Euglenophyceae, Dinophyceae and Xanthophyceae
Light-regulated photosynthetic gene expression and phosphoribulokinase enzyme activity in the heterokont alga Vaucheria litorea (xanthophyceae
) and its symbiotic molluskan partner Elysia chlorotica (Gastropoda).
)," Environmental and Experimental Botany, vol.
The algae were Bacillariophyceae (diatoms), 80 species; Chlorophyceae (green algae), 44 species; Cyanophyceae (blue-green algae), 21 species; Euglenophyceae (euglenin), 6 species; Pyrrophyceae (dinoflagellates), 4 species; Xanthophyceae
(xanthophytes), 2 species; and Chrysophyceae (chrysophytes), 1 species.
La mayor densidad de organismos correspondio a Cyanobacteria con el 68.8% del total, le siguen Bacillariophyceae (14.6%) y Chlorophyceae (12.3%); los demas grupos presentaron densidades muy bajas, Euglenophyta (2.1%), Zygnemophyceae (1.3%) y Rhodophyta, Dinophyta y Xanthophyceae
no superaron cada una el 0.5% de la densidad total.
The genus Vaucheria de Candolle belongs to the class Xanthophyceae
(yellow-green algae), and is one of the two benthic macroalgal genera within xanthophytes besides Tribonema (Christensen, 1987).