Chapters authored
First Report on the Diversity of Epizoic Algae in Larval of Shellfish Gastropod Aliger gigas
Epibiosis occur frequently on the shells of some marine crustaceans, which often serve as substrate for various species of algae, there is few information on the associations between these. The objective of this study was to determine if the gastropod mollusk Aliger gigas (formerly Lobatus gigas) in larval had some sort of the association with algal. To the above was carried out collecting egg masses in the environment, the larvae were cultivated in seawater filtered 5 μm. The algal material found was observed in electron microscopy, for its identification and quantification. We analyzed 60 larvae aged 2–44 days for analyzing the structure of the shell and its epibionts. Of the larvae analyzed, 50 larvae presented epizoic. The algae community consisted of 28 taxa, and composed of 25 diatoms (Bacillariophyta) and three cyanophytes (Cyanobacteria). The H′ diversity values fluctuated between 0.2 a 1.2. The dominant and frequent species were formed by diatoms: Nitzschia panduriformis var. minor, Halamphora sp. and Cyclophora sp.
Part of the book: Plankton Communities
Water Cleaning by Means of Microalgae in the Channels of Xochimilco, Mexico
The lake of Xochimilco, Mexico presents a high degree of chemical contamination, despite belonging to a Protected Natural Area and RAMSAR site, due to this, it was decided to evaluate the quality of its waters and propose solutions to its contamination. The objective of this work was to know the relationship that exists between the microalgae species associated with a dump that affects the site, coming from a Wastewater Treatment Plant and the physicochemical factors coupled with the development of bioassays. Water sampling was carried out in the site and adjacent areas to know the microalgae species and their cleaning role, in addition to laboratory bioassays to verify the results. There are 88 species of microalgae and their influence on water cleaning. In laboratory, it was confirmed that some algae species were purifiers of contamination by nutrients.
Part of the book: Progress in Microalgae Research