Alexandra Elaine Rizzo
State University of Campinas
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Alexandra Elaine Rizzo.
Biota Neotropica | 2007
Alexandra Elaine Rizzo; Tatiana Menchini Steiner; Antonia Cecília Zacagnini Amaral
Rizzo, A.E., Steiner, T.M. & Amaral, A.C.Z. Glyceridae Grube 1850 (Annelida: Polychaeta) from Southern and Southeastern Brazil, including a new species of Glycera. Biota Neotrop. Sep/Dez 2007 vol. 7, no. 3 http:// www.biotaneotropica.org.br/v7n3/pt/abstract?article+bn00407032007. ISSN 1676-0603. This systematic study of the polychaete species of the family Glyceridae is part of a broader program to inventory and determine parameters for conservation and sustainable use of the marine biodiversity off the southeastern and southern coast of Brazil. The material studied was collected from intertidal sandy beaches, the inner continental shelf (<50 m depth) off the northern coast of the state of Sao Paulo, and the outer continental shelf and part of the continental slope (depths from 60 to 808 m) off the state of Rio de Janeiro south to Rio Grande do Sul (22° S - 34° 40’ S). The descriptions of several species were improved, adding new and important taxonomic characters, mainly related to proboscideal papillae. A key for identifi cation of the glycerid species from southeastern and southern Brazil is also provided. Eight species of Glyceridae were identifi ed: Glycera americana Leidy 1855; Glycera brevicirris Grube 1870; Glycera dibranchiata Ehlers 1868; Glycera lapidum Quatrefages 1866; Glycera oxycephala Ehlers 1887; Glycera tesselata Grube 1863; Hemipodia californiensis (Hartman 1938); Hemipodia simplex (Grube 1857); and a previously unknown species of Glycera.
Journal of the Marine Biological Association of the United Kingdom | 2001
João Miguel De Matos Nogueira; Alexandra Elaine Rizzo
A new species of Branchiomaldane was identified in a collection of polychaetes living in colonies of a stony coral. Branchiomaldane maryae sp. nov. differs from all other species of the genus by the presence of lensed eyes and 1–3 branchial filaments per parapodium. Comparisons between B. maryae sp. nov. and the other species of the genus are provided, together with some phylogenetic considerations on the position of the genus.
Revista Brasileira De Zoologia | 2004
Alexandra Elaine Rizzo; Antonia Cecília Zacagnini Amaral
Goniadid polychaetes belonging to the genus Bathyglycinde Fauchald, 1972 were collected during the REVIZEE Program/South Score/Benthos on the outer shelf and continental slope off the south-southeastern coast of Brazil. This genus is recorded for the first time from Brazilian waters. A new combination for the species Glycinde profunda Hartman & Fauchald, 1971 is proposed, and the species is illustrated. This species was originally assigned to the genus Glycinde Muller, 1858, but the conspicuous proboscideal papillae and the simple capillary notochaetae without knob are typical of Bathyglycinde. Bathyglycinde profunda comb. nov. differs from other congeneric species mainly in having all chaetigers with single pre- and postchaetal lamellae, proboscideal papillae in Area I and 32-41 uniramous chaetigers. This is the first member of the genus found in less than abyssal depths. A key to the species of Bathyglycinde is provided.
Biota Neotropica | 2007
Alexandra Elaine Rizzo; Antonia Cecília Zacagnini Amaral
In the present study, four species of Nephtyidae, Aglaophamus juvenalis (Kinberg 1866), Nephtys acrochaeta Hartman 1950, Nephtys californiensis Hartman 1938 and Nephtys squamosa Ehlers 1887, were found from the intertidal zone to the shallow sublittoral (<50 m) off Sao Paulo, Brazil, during the program BIOTA/FAPESP Marine Benthos. Descriptions and notes on each of them are provided. Nephtys californiensis is a new record for the Brazilian coast. Keys to genera and species of Nephtyidae recorded from Brazil are given.
web science | 2008
Luis F. Carrera-Parra; Alexandra Elaine Rizzo; Sergio I. Salazar-Vallejo
In a series of studies on eunicids, there were explicit or implicit indications that Eunice riojai described from the north-western Caribbean Sea, and Eunice sebastiani described from south-east Brazil, were synonyms. This was based upon a then recent monograph on the genus, and on the fact that some specimens were found in drifting wood which would explain the large geographical range. The study of some large specimens of E. sebastiani, collected at the type locality, shows that there are several relevant morphological differences between the two species and thus both species names must be regarded as distinct. In fact, E. sebastiani is unique in the genus because their maxillae V are bidentate. Furthermore, herein we re-describe these two species and re-evaluate some morphological features described in previous studies.
Journal of the Marine Biological Association of the United Kingdom | 2000
Alexandra Elaine Rizzo; Antonia Cecília Zacagnini Amaral
Revista De Biologia Tropical | 2001
Alexandra Elaine Rizzo; A. Cecília Z. Amaral
Scientia Marina | 2001
Alexandra Elaine Rizzo; A. Cecília Z. Amaral
Biota Neotropica | 2007
Alexandra Elaine Rizzo; Antonia Cecília Zacagnini Amaral
Archive | 2005
Eliane P. Arruda; Alexandra Elaine Rizzo; Antonia Cecília Zacagnini Amaral