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Registros recuperados: 13
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Ascidians at Currais islands, Paraná, Brazil: taxonomy and distribution Biota Neotropica
Rocha,Rosana Moreira da; Faria,Suzana Barros de.
The Currais Islands is a group of a few small rocky islands in the state of Paraná, in southern Brazil, which provides an interesting location for the study of ascidians. Subtidal diversity is very high and the islands have recently been proposed as a Conservation Unit. A field study was established on the largest island to understand ascidian distributions on spatial and temporal scales. Transects, sampled three times during 2002 and 2003, were established on northern and southern locations of the island as well as at three depths. Twenty species were recorded; the most common were Didemnum rodriguesi, Didemnum speciosum and Didemnum granulatum. Three species are possibly new and will be described elsewhere. An additional nine are new records for the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascidiacea; Tunicata; Taxonomy; Spatial distribution; Temporal distribution.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032005000300013
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Biodiversity of benthic macroinvertebrates on hard substrates in the Currais Marine Protected Area, in southern Brazil Biota Neotropica
Bumbeer,Janaína; Cattani,André Pereira; Chierigatti,Nícolas Binneck; Rocha,Rosana Moreira da.
Abstract This study describes the biodiversity of benthic invertebrates on hard substrates in the Currais Marine Protected Area (Currais MPA), in the state of Paraná. The benthic community was sampled during 2012 to 2015, in winter and summer, at two islands and four groups of artificial reefs (ARs). Samples were collected along shallow (2-4 m) and deep (6-8 m) transects at the islands and ~18 m transects at the ARs. We also searched the literature to review all published records of benthic invertebrates on hard substrates in the Currais MPA. We recorded 176 taxa in the phyla Annelida (class Polychaeta), Arthropoda (class Maxillopoda, order Sessilia), Bryozoa, Cnidaria, Chordata (class Ascidiacea), Echinodermata, Mollusca and Porifera, in 13 classes, 40...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Benthic invertebrates; Exotic species; Inventory; Marine conservation; Paraná coast.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000400201
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Bostricobranchus digonas Abbott (Ascidiacea, Molgulidae) in Paranaquá Bay, Paraná, Brazil: a case of recent invasion? Zoologia
Rocha,Rosana Moreira da.
Bostricobranchus digonas Abbott, 1951 was discovered by dredging near Cotinga Island, Paranaguá Bay, Paraná (25º31'511"S, 48º28'714"W). Concentrated in a small area 1.5 m deep, the animals were collected by a Van Veen device. All sizes from 3 mm up to 2 cm in body diameter were recovered. This is the first report of a species of this genus in the South Atlantic and its oeeurrenee is diseussed.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascidiacea; Molgulidae; Bostricobranchus; Nonindigenous fauna.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500009
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Checklist das ascídias (Tunicata, Ascidiacea) do Estado de São Paulo, Brasil Biota Neotropica
Rocha,Rosana Moreira da; Dias,Gustavo Muniz; Lotufo,Tito Monteiro da Cruz.
Ascídias são organismos marinhos que, em sua maioria, vivem fixados a substratos consolidados desde as regiões costeiras até às grandes profundidades. Apesar de serem cordados, apresentam um plano corporal adulto muito modificado em função de seu hábito de vida. O Estado de São Paulo é o que apresenta o melhor conhecimento da fauna de ascídias, tanto em termos de sua biodiversidade como em aspectos ecológicos. No estado, a região do município de São Sebastião foi a mais estudada em função da presença do Centro de Biologia Marinha da USP, que atraiu muitos pesquisadores desde a década de 1960. Nos últimos 50 anos houve um crescimento constante no conhecimento da fauna paulista de ascídias, que conta atualmente com 66 espécies registradas. No entanto, ainda...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascidiacea; Biota paulista; BIOTA/FAPESP Program.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000500036
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Description of Sidneioides peregrinus sp. nov. (Tunicata: Ascidiacea: Polyclinidae): a possible exotic species in the Atlantic Ocean Rev. Bras. Zool.
Kremer,Laura Pioli; Metri,Rafael; Rocha,Rosana Moreira da.
Three species of Sidneioides Kesteven, 1909 were known until now, all of them from the western Pacific. Sidneioides peregrinus is a new species we found in Paranaguá Bay, southern Brazil. Diagnostic characteristics of the species are: colonies with 1-5 lobes, closely clumped, and attached by the entire basal area or by a common smaller area; seven to ten thin longitudinal fiber muscles (some branched) along the anterior two thirds of the thorax; no transverse muscle fibers; more than 30 tentacles of three orders forming one circle; pharynx with 10 to 12 rows of stigmata with 13 to 15 stigmata in each half row; bilobed anus at the level of the fourth or fifth row of stigmata; posterior abdomen not very elongated, oval, and joined to the abdomen by a narrow...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascidian; Brazil; Encrusting community; New species; Species introduction.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000600012
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Detection of introduced sessile species on the near shore continental shelf in southern Brazil Rev. Bras. Zool.
Bumbeer,Janaína de Araújo; Rocha,Rosana Moreira da.
Invasion by marine species, often considered a grave threat to marine ecosystems, occurs throughout the world as a consequence of many anthropogenic activities. In coastal Paraná, many factors including shipping, aquaculture and the use of artificial substrates provide suitable environments for the establishment and rapid spread of introduced marine species. To better understand this process, the encrusting community was studied on polyethylene plates (n = 120, 10 x 10 cm) that were placed seasonally at fixed locations on the inner continental shelf to detect non-native species. Of the 62 taxa found, 40 were identified to species, 14 of which were native, 9 introduced and 17 cryptogenic. We found a new introduction while most introduced species were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artificial substrate; Biofouling; Marine bioinvasion; Sublittoral.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000200005
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Epibiosis Reduction on Productivity in a Mussel Culture of Perna perna (Linné, 1758) BABT
Metri,Rafael; Rocha,Rosana Moreira da; Marenzi,Adriano.
Cultivated mussels (Perna perna) were studied to test for the effects of cleaning on their growth. These effects were examined by experimentally cleaning mussels and by changing mussel density. Treatment was performed twice, at two and four months after immerging the ropes. Two months after the first treatment and three months after the second treatment, mussels were harvested and measured (weight, length, width and thickness). Analysis of variance showed that none of the treatments resulted in increased growth of the mussels, nor did increased density result in decreased growth when compared with the control. It was concluded that it was not necessary to clean the shells to increase harvest.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mussels culture; Perna perna; Epibiosis; Cleaning management.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000300011
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Eudistoma (Ascidiacea: Polycitoridae) from tropical Brazil Rev. Bras. Zool.
Oliveira,Livia de Moura; Gamba,Gustavo Antunes; Rocha,Rosana Moreira da.
We studied material in collections from coastal intertidal and subtidal tropical waters of the Brazilian states of Paraíba, Pernambuco, Alagoas, Bahia, and Espírito Santo. We identified seven species of Eudistoma, of which two are new to science. Eudistoma alvearium sp. nov: colonies have fecal pellets around each zooid and zooids are 6-8 mm long with seven straight and parallel pyloric tubules; the larval trunk is 0.6 mm long with three adhesive papillae and ten ampullae. Eudistoma versicolor sp. nov: colonies are cushion-shaped, variable in color (blue, purple, brown, light green, gray or white) and zooids have six straight and parallel pyloric tubules; the larval trunk is 0.8 mm long with three adhesive papillae and six ampules. Three species - E....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atlantic; Colonial ascidians; New species; Taxonomy.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000200011
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Introduced and cryptogenic species and their management in Paranaguá Bay, Brazil BABT
Neves,Carolina Somaio; Rocha,Rosana Moreira da.
The aim of this work was to identify the introduced and cryptogenic species in encrusting and associated communities of hard substrates in Paranaguá Bay, Brazil, and to attempt to determine which of these species could negatively affect the local community to suggest management strategies for these species. At least four introduced species were found - a large number in comparison with other port surveys. These were the hydrozoan Garveia franciscana Torrey, 1902, the polychaete Polydora cornuta Bosc, 1902, the barnacles Amphibalanus reticulatus (Utinoni, 1967) and Striatobalanus amaryllis Darwin, 1854, all with potentially harmful impacts. Of the 33 cryptogenic species, four were also listed in the literature as causing negative effects. We propose the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioinvasion; Introduced species; Management; Biofouling; Artificial substrates; Paranaguá Bay.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000300025
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Invading the natural marine substrates: a case study with invertebrates in South Brazil Rev. Bras. Zool.
Bumbeer,Janaína; Rocha,Rosana Moreira da.
ABSTRACT The number of biological invasions has grown dramatically in recent decades, as well as the world's human population and coastal development. Anthropogenic habitats, such as pier pilings and break waters, have been constantly added to marine environment, usually concentrated in estuarine areas. These habitats are focal points for marine invasions, but relatively little is known about the spread of non-indigenous species (NIS) to nearby natural habitats. This study aimed to determine the extent to which NIS have spread to natural substrates both inside estuarine areas and in the adjacent open sea. We conducted a field survey and a literature review, which have been critically discussed and validated. The updated NIS list of benthic invertebrates...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anthropogenic habitats; Natural habitats; Checklist; Invertebrates; Marine bioinvasion.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000300601
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Keys for the identification of families and genera of Atlantic shallow water ascidians Biota Neotropica
Rocha,Rosana Moreira da; Zanata,Thais Bastos; Moreno,Tatiane Regina.
Here we present tabular keys for families and genera of ascidian species found in shallow waters in the Atlantic Ocean. Characters used in the keys are illustrated or shown in photos of dissected animals and we also provide generalized drawings of all genera. A list of species in each genus and their geographical distribution in the Atlantic is also included, totaling 461 species.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascidiacea; Tunicata; Taxonomy; Checklist; Geographic distribution.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000100022
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Some Ascidians (Tunicata, Ascidiacea) from Paraná State, Southern Brazil Zoologia
Rocha,Rosana Moreira da; Nasser,Cinthia Margareth.
The records of eleven species from the Paraná State coast are presented. One of them, Ascidia curvata (Traustedt, 1882), is first registered in the Brazilian coast. Six other species had their geographic distribution extended to the south in West Atlantic waters.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascidiacea; Taxonomy; Paraná; Brazil.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000300009
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Trididemnum maragogi sp. novo (Ascidiacea, Didemnidae) trom Alagoas, Northeastern Brazil Zoologia
Rocha,Rosana Moreira da.
The new species of didemnid ascidian, Trididemnum maragogi sp. nov., is described from the Northeastern Brazilian coast. Many small colonies aggregate on calcareous algae. They are brown and more or less covered by spicules, depending on exposure to the sun, which suggests the presence of symbiotic algae. This species is characterized by a non pigmented zooid with a very long oral siphon bordered by six finger-like lobes, a branchial sac with anterior and posterior non perforated areas, a short muscular process on the esophageal peduncle and a testis with one large follicle partially surrounded by 6-7 coils of the sperm duct.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ascidiacea taxonomy; Didemnidae; Trididemnum; Northeastern Brazil.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000400015
Registros recuperados: 13
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