An update for cladoceran fauna (Crustacea, Branchiopoda) from Lake Paranoá, Central Brazil, with the first description of a male of Leydigiopsis ornata Daday, 1905

Abstract

Until recently, Lake Paranoá was considered the most thoroughly studied aquatic environment in relation to cladocerans in the Federal District. However, in new samplings carried out during the dry and rainy seasons of 2014, we found 10 new records of species. Th ese species were presumed to occur in Lake Paranoá because of their range of geographical distribution. Th e male of Leydigiopsis ornata Daday, 1905 is described for the fi rst time, adding new morphological traits to a recent redescription of the species. Th e presence of three rows of setulae on the labral keel is unique to the L. ornata male. As is the case in females, the male of L. ornata is mainly diff erentiated from L. megalops Sars, 1901 and L. curvirostris Sars, 1901

Evaluation of the Removal and Effects of Cylindrospermopsin on Ripened Slow Sand Filters

“…Toxins 2023, 15, x FOR PEER REVIEW 13 of 26 10 shows the relative abundance of these classes in each SSF at the end of the filtration run. Some of the classes identified on the SSFs, among others, have been previously recorded in the Paranoá Lake microbial community [56]. In addition, in previous studies, these same classes were also identified in the system of slow sand filtration using this lake water [45,47,57,58].…”

“…Species of the genus Arcella are often found in sediments or decomposing vegetation, where they feed on bacteria, algae, and organic debris. Species Some of the classes identified on the SSFs, among others, have been previously recorded in the Paranoá Lake microbial community [56]. In addition, in previous studies, these same classes were also identified in the system of slow sand filtration using this lake water [45,47,57,58].…”

“…Some of the classes identified on the SSFs, among others, have been previously recorded in the Paranoá Lake microbial community [ 56 ]. In addition, in previous studies, these same classes were also identified in the system of slow sand filtration using this lake water [ 45 , 47 , 57 , 58 ].…”