Eurycercus (Bullatifrons) norandinus (Crustacea: Branchiopoda: Eurycercidae), a new species of Cladocera in the Neotropical Region (original) (raw)
Related papers
The genus Eurycercus Baird, 1843 (Cladocera: Eurycercidae) in the Neotropics
Journal of Natural History, 2010
In Brazil and Columbia, we found three different species of Eurycercus Baird, 1843 (Cladocera: Eurycercidae), belonging to two different subgenera: (1) E. (Eurycercus) cf. lamellatus (O. F. Müller, 1776), (2) E. (Bullatifrons) meridionalis sp. nov. and (3) E. (Bullatifrons) dumonti sp. nov. Appearance of the first species in Brazil could be a result of introduction due to human activities. The two other species are apparently Neotropical endemics. There is no opportunity to associate the previously described E. lamellatus var. minuta Birabén, 1939 with any taxa found by us, because the type material is lost and no eurycercids are present in its type locality now; therefore this taxon is species incorrigenda with minimal chance of being re-evaluated.
Check List, 2014
regions with strong marginal spines. Further details are found in Frey (1980). Distribution: Venezuela, Puerto Rico, New Zealand. In Brazil, it is a rather rare animal, occurring in São Paulo, Rio de Janeiro and Minas Gerais (Atlântico Sudeste region; Source http://cladocera.wordpress.com). This study presents the first record of the suborder Cladocera from Parque Nacional do Itatiaia, contributing to the knowledge on the local biodiversity, besides increasing knowledge on the fauna of highland-dwelling Crustacea in Brazil.
The Cladocera (Crustacea: Branchiopoda) as a relict group
Zoological Journal of the Linnean Society, 2006
According to the fossil record and DNA data, the Cladocera is an ancient crustacean group. Recent revisions make their taxonomy amenable to zoogeographical analysis. A bipolar (antitropical) disjunct distribution of faunal complexes and taxa ( Daphnia , Daphniopsis , Pleuroxus , Tretocephala , etc.), the wide ranges of some species and narrow restriction of others, the presence of isolated populations and the concentration of endemics in the warm temperate -subtropical zone of both hemispheres are traits of cladoceran zoogeography. These enable us to compare them with better studied (both living and fossil) plants, invertebrates and vertebrates, and to analyse their faunal formation by the modern version of the concept of 'ejected relicts' instead of vicariance. This reveals the extant Cladocera as a relict group, whose taxa were widely distributed in the past. Tertiary climatic changes, primarily within the present tropical and boreal latitudes, resulted in mass extinction of their biotas, while the warm temperate -subtropical regions remained comparatively unchanged. Although most recent Cladocera have relict status, others such as the D. pulex and D. longispina species groups and the subgenus Eubosmina are evolutionary young and show recent speciation.
Journal of Paleolimnology, 2020
Cladocera (Crustacea: Branchiopoda) quickly respond to changes in environmental conditions and their remains are usually found in large amounts in lacustrine sediments, which make them an important biological proxy in paleolimnological studies. Variations in species composition have been used to infer paleo-climate and paleo-environmental variables including lake depth, eutrophication, and deforestation. However, despite their advantages as bioindicators in the study of past conditions, they are underutilized in paleolimnological research in Central America due to limited knowledge about their diversity and the morphological differences between the subfossil remains of different taxa. In order to address this issue, we described and analyzed cladoceran remains from 56 waterbodies located in Mexico, Guatemala, El Salvador, and Honduras. Here, we provide a description of the remains from 10 different taxa that belong to the Sididae, Bosminidae, Daphniidae, Macrothricidae, and Ilyocryptidae families. Keywords Non-chydorid Cladocera Á Subfossil remains Á Guide Á Paleolimnology Á Central America Á Yucatan Peninsula
Brazilian Journal of Biology, 2024
Biological samples obtained from a small temporary pond of northern Colombia yielded the first record Coronatella undata Sousa, Elmoor-Loureiro and Santos, 2015 and of the male of C. monacantha (Sars, 1901) for Colombia. In this study, the morphology of female of Coronatella undata and female and male of C. monacantha was described and compared to other species within the genus. C. undata was originally described from Brazil and, among the species of the Coronatella monacantha complex, seems to be closely related to C. acuticostata (Sars, 1903). C. undata shows some similarities with C. monacantha, but it can be identified by important diagnostic characters such as: 1) posterior-ventral corner of valve with two denticles, 2) seta on exopodite of trunk limb II rudimentary, 3) filter comb of trunk limb II with six setae, 4) ODL seta of trunk limb I shorter than longest seta of IDL. C. monacantha is the most reported species in the Neotropical region and the male most resemble C. pauli...
Cladocera (Crustacea, Branchiopoda) in coastal temporary environments in southern Brazil
Zootaxa, 2019
The coastal plain of Rio Grande do Sul state, southern Brazil, presents as characteristic large expanses of wetlands. Some of these environments are of a temporary nature, and thus have a community adapted to periods with water and periods of drought. Among these communities we can highlight the Cladocera, which have the capacity to form structures of dormancy, and due to this adaptation are effective at colonizing these environments. This study aims to identify the Cladocera species present in the temporary aquatic environments of the southern coastal region of Brazil. Samples were collected in 14 temporary aquatic environments using a classical filtering methodology. As results we obtained 64 Cladocera taxa, representing 54% of the total number of species described in Brazil. The number of taxa was high, the species accumulation curve showed a tendency to stabilization, demonstrating that this region possesses a greater richness.
Nauplius, 2017
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 by the morphology of the postabdomen.
How many species of cladocerans (Crustacea, Branchiopoda) are found in Brazilian Federal District?
Acta Limnologica Brasiliensia, 2012
AIM: This study aimed provides a checklist of cladocerans and also an evaluation of richness and species composition in the Federal District, Brazil. METHODS: Checklist of cladocerans was obtained evaluating data from the literature, from taxonomic collection (Elmoor-Loureiro's collection) and from fauna surveys conducted over more than three decades in different types of aquatic environments. RESULTS: The 57 water bodies studied showed 56 species, of which 14 are new records. The number of species contained in the list displayed corresponds to 85% of what was expected for richness estimators. The highest number of species was observed in the lentic water bodies (52), which also presented the specific composition of fauna (R = 0.110; p = 0.016), possibly because there were samples taken among the aquatic vegetation. According to our understanding, some species may be subject to local extinctions because they inhabit water bodies located exclusively in urban areas, which can lead...