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A fl oristic and ultrastructural study on naked green Euglenophyta was performed in the Amazonian and Caribbean regions of Colombia, where a large number of taxa are contained in several freshwater bodies. A total of 37 taxa were recorded, 1 belonging to the genus Cryp-toglena Ehr., 9 to Lepocinclis Perty, 1 to Monomorphina Meresch., and 26 to Phac...
Citations
... The Amazon and Caribbean regions of Colombia have a rich biological diversity and an abundance of organic matter, making them ideal environments for Euglenophyta microalgae growth (Pringsheim 1956, Lackey 1968, Munawar 1972, Conforti 1998, Reynolds et al. 2002, Rosowski 2003, Wołowski & Hindák 2004. Although some research on these organisms was carried out in nearby countries such as Brazil and Bolivia (Thomasson 1971and 1977, Uherkovich & Schmidt 1974, Uherkovich & Franken 1980, Couté & Thérézien 1985, Thérézien 1989, Rodrigues 1992, Conforti 1993a, b, and 1994; for Colombia, only four scientific works were focused on them (Conforti & Nudelman 1994, Duque 1995, Duque & Nuñez Avellaneda 2000, Tolivia et al. 2012). On the other hand, the Caribbean region also presents excellent characteristics for the Euglenophyta (Guisande et al. 2008). ...
A floristic and ultrastructural study on loricated Euglenophyta was made in several freshwater bodies from the Amazonian and Caribbean regions of Colombia. A total of 114 taxa were recorded, 93 belonged to the genus Trachelomonas Ehr., and 21 to Strombomonas Defl. From the total taxa determined, 73 were recorded for the first time for Colombia, 19 for the Amazonian and 52 for the Caribbean region. Besides 43 taxa were examined by scanning electron microscopy (SEM) and details of its ultrastructure are illustrated.
Keywords:
Euglenophyta; phytoplankton; Taxonomy; tychoplankton; ultrastructure
... Kosmala et al. (2005, 2007a, 2007b, 2009), Triemer et al. (2006), Ciugulea et al. (2008 and Kim et al. (2013) are published attempts to validate the taxonomical changes proposed by Marin et al. (2003). Various papers were published in the last two decades describing new species and/or infraspecifi c taxa of euglenophytes without, however, adding information to their molecular biology (Alves-da-Silva & Bicudo 2003, Domitrovic & Conforti 2005, Zongo et al. 2006, Conforti 2009, 2010, Da & Couté 2009, Tolivia et al. 2012, Duangjan & Wołowski 2013, however, the ones by Kosmala et al. (2009) and Kim & Shin (2014) being the only exceptions. ...
As a result of the taxonomic survey of the pigmented Euglenophyceae of Lago da Ponte, an artificial pond located at the Porto Alegre Botanical Garden, State of Rio Grande do Sul, Southern Brazil and samples gathered later on from this same water body, a new species of Phacus (Euglenophyceae, Phacaceae), P. multifacies Alves-da-Silva & C. Bicudo, sp. nov., is here described and proposed as new to science. Cell displacement turning ventrally one full turn round itself and also rotating around its longitudinal axis and the presence of a dorsal wing-like expansion next to the caudal process are the main diagnostic features of the new species. Physical and chemical information on the pond water is presented.
The Peruvian Amazon is a region with many aquatic ecosystems which allow the presence of species of flora and fauna, including algae, which are very important
components of food chains in water, and being associated (epiphyton, metaphyton) with
the roots, stems, or leaves of macrophytes. Studies on algal diversity in the Peruvian
Amazon are mostly referred to the lowland Amazon region but not to the high jungle. The
Oconal lagoon, located in the District of Villa Rica, Oxapampa, is an important ecosystem
at the local level and is affected by human activities. This place was chosen to carry out
the present work, with the objective to determine the diversity and relative abundance of algae (except Bacillariophyceae) associated with Macrophytes; for which were conducted two field work during the dry season (August 31th, 2013) and growing season (December 23th, 2013). 24 samples were collected from four areas of collection (North-West, North - East, Central and Central-South of the lagoon). The samples were obtained by scraping or
cutting part of the macrophytes in direct contact with the water. The identification was made using specialized bibliography and recent scientific articles. In the results, were obtained 74 genera, 160 species and 16 varieties, being 18 genera, 60 species and 11 varieties new records for Peru. The most abundant genera were Desmodesmus, Leptolyngbya, Trachelomonas, Lepocinclis and Phacus. The most abundant phylum were Chlorophyta 28.3%, Cyanobacteria with 27.7% and Euglenophyta with 19.3%. Miriophyllum aquaticum was the most algal-rich host plant with 100 taxa of algae. The diversity and abundance of algae found may be due to physical-chemical, environmental factors or by the effects of the macrophytes. In conclusion, there is an high diversity of algae associated with macrophytes in the Oconal lagoon, with a clear dominance of the phylum Chlorophyta and Cyanobacteria.
