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Registros recuperados: 11
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A study on the Gut contents of live Juvenile Loggerhead Turtles, Caretta Caretta (Linnaeus) (Reptilia, Cheloniidae), from the South-Eastern part of the North Atlantic Ocean, with emphasis on Coelenterate Identification Naturalis
Nierop, M.M. van; Hartog, J.C. den.
The gut contents of five juvenile individuals of the loggerhead turtle Caretta caretta (L.) from waters around Madeira, Selvagem Grande (Selvagens Islands) and São Miguel (Azores) were analysed macro- and microscopically. Macroscopic investigations showed that epipelagic salps (e.g., Pyrosoma atlanticum Péron) and gastropods (e.g., Ianthina spp. and Pterotrachea spp.) constituted an important part of the food remains present in these loggerheads. To a lesser extent this also holds for organisms such as goose-barnacles (Lepas spp.). and Idotea metallica Bosc, which live on drifting materials, including algae. Microscopic examination revealed the presence in all turtles of large numbers of nematocysts, deriving mainly from Siphonophora and to a lesser extent...
Tipo: Article / Letter to the editor Palavras-chave: Cheloniidae; Caretta caretta; Food; Nematocysts; Siphonophora; Hydromedusae; Scyphozoa; Crustacea; Mollusca; Tunicata; South-eastern North Atlantic; 42.82.
Ano: 1984 URL: http://www.repository.naturalis.nl/record/319311
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A study on the Gut contents of six Leathery Turtles Dermochelys Coriacea (Linnaeus) (Reptilia: Testudines: Dermochelyidae) from British waters and from the Netherlands Naturalis
Hartog, J.C. den; Nierop, M.M. van.
Microscopical investigations of the gut contents of six individuals of Dermochelys coriacea from southern England and the North Sea revealed the presence in all of these of numerous nematocysts, mainly scyphozoan. Only six species of Scyphozoa occur in British shallow waters and in the North Sea, viz., Pelagia noctiluca (Forskål), Chrysaora hysoscella (L.), Aurelia aurita (L.), Cyanea capillata (L.), C. lamarckii (L.) and Rhizostoma octopus (L.). For the purpose of comparison and identification an inventory was made of the cnidom of these six species (based on preserved material). Nematocysts of one or more of these species appeared to be present in each of the turtles, all six species being represented. One of the turtles in addition appeared to have...
Tipo: Article / Letter to the editor Palavras-chave: Scyphozoa; Leptomedusae; Siphonophora; Testudines; Dermochelys; Nemato- cysts; British Isles; Netherlands; Food; Digestive tract; Anatomy; Functional morphology.; 42.82.
Ano: 1984 URL: http://www.repository.naturalis.nl/record/317798
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Checklist of the Cnidaria Medusozoa of Brazil Biota Neotropica
Migotto,Alvaro E.; Marques,Antonio C.; Morandini,André C.; Silveira,Fábio L. da.
Literature records were reviewed to compile a list of species of the marine taxa of Cnidaria Medusozoa recorded for the Brazilian coast. The total number of species of medusozoans so far recorded for Brazil is 373: 347 Hydrozoa, 3 Cubozoa: 23 Scyphozoa.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydrozoa; Scyphozoa; Cubozoa; Fauna; South Atlantic; Brazil; Polyp; Medusa.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000100010
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Cubozoa e Scyphozoa (Cnidaria: Medusozoa) de águas costeiras do Brasil Iheringia, Sér. Zool.
Morandini,André C.; Ascher,Denise; Stampar,Sergio N.; Ferreira,João Fernando V..
As espécies de Cubozoa e Scyphozoa costeiras que ocorrem no Brasil são descritas, com base em espécimes de coleções de museus e exemplares recém-coletados. Chaves de identificação e um glossário também são apresentados. As espécies descritas são: Aurelia sp.; Cassiopea xamachana Bigelow, 1892; Chiropsalmus quadrumanus (Müller, 1859); Chrysaora lactea Eschscholtz, 1829; Drymonema dalmatinum Haeckel, 1880; Linuche unguiculata (Swartz, 1788); Lychnorhiza lucerna Haeckel, 1880; Nausithoe aurea Silveira & Morandini, 1997; Phyllorhiza punctata von Lendenfeld, 1884; Stomolophus meleagris Agassiz, 1862; Tamoya haplonema Müller, 1859 e Tripedalia cystophora Conant, 1897.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scyphozoa; Cubozoa; Cnidaria; Chaves de identificação; Brasil.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212005000300008
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Experiments in nature and laboratory observations with Nausithoe aurea (Scyphozoa: Coronatae) support the concept of perennation by tissue saving and confirm dormancy Biota Neotropica
Silveira,Fábio Lang da; Jarms,Gerhard; Morandini,André Carrara.
Stephanocyphistomae of Nausithoe aurea from São Paulo State, Brazil (in subtropical western South Atlantic wa-ters), were relocated with their substrata in nature to study their survivorship under control and and experimental series - i.e. the polyps in the original orientation and inverted, and in each series exposed and buried polyps. We found that N. aurea survives over 13 months in nature, between 1/3 - 1/4 of 268 stephanoscyphistomae as normal feeding polyps, by segmentation produces planuloids and rejuvenates the polyps - an additional explanation for clustering of the solitary stephanocyphistomae. Dormant living tissues within the periderm of the tube were considered resting stages. The results support the concept that coronates in general have the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cnidaria; Scyphozoa; Nausithoe aurea; Perennation; Resting stages; Brazil.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000200009
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Major developments in conulariid research: problems of interpretation and future perspectives Ameghiniana
Leme,Juliana de Moraes; Simões,Marcello Guimarães; Rodrigues,Sabrina Coelho; Van Iten,Heyo; Marques,Antonio Carlos.
Renewed interest in conulariids has resulted in clarification of problems in the paleobiology of this group. Discoveries of skeletal structures and specimens preserved in situ, coupled with cladistic analyses, have led to a revival of Kiderlen's (1937) hypothesis that conulariids were polypoid scyphozoans or a sister taxon of this class. Until 1979, research on conulariids centered on the description of new species and on the erection of subgroups using phenetic approaches. Few papers addressed the paleobiology and phylogenetic affinities of conulariids, and none employed cladistics. In contrast, the 1980's saw the publication of major papers on the paleoecology of conulariids, and during this decade the hypothesis that conulariids were benthic organisms...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conulariids; Cnidaria; Scyphozoa; Systematics; Paleoecology; Taphonomy.
Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142008000200013
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Medusivorous fishes, a review Naturalis
Ates, R.M.L..
A preliminary review is presented of fish species having consumed pelagic Cnidaria (Scyphozoa and Hydrozoa) as well as Ctenophora. Quantitative data are scarce. Knowledge of morphological and physiological adaptations of fishes foraging on gelatinous plankton is almost non-existent. Many fish species consume medusae and some reasons to suspect that there are even more that do so, are discussed.
Tipo: Article / Letter to the editor Palavras-chave: Hydromedusae; Scyphozoa; Ctenophora; Jellyfish; Fishes; Prey; 42.81.
Ano: 1988 URL: http://www.repository.naturalis.nl/record/318428
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Nausithoe aurea n. sp. (Scyphozoa: Coronatae: Nausithoidae), a species with two pathways of reproduction after strobilation: sexual and asexual Naturalis
Silveira, Fábio Lang da; Morandini, André Carrara.
Nausithoe aurea, a new species of scyphozoan Coronatae, is described from São Paulo State, Brazil. The solitary scyphistomae, with some zooxanthellae, strobilated producing planuloids and medusae; this represents an intermediate life cycle between that of metagenetic Nausithoidae and the submarine cave-dwelling, reduced medusa stage of Nausithoe planulophora (Werner, 1971). The periderm tube of the scyphistomae has 16 internal cusps in all whorls. The medusae present yellow pigment spots in most of their lappets. The early embryonic development is briefly described. Planuloid formation is hypothesized as explanation for polyp-stage philopatry.
Tipo: Article / Letter to the editor Palavras-chave: Scyphozoa; Coronatae; Systematics; Life cycle; Nausithoe; New species.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/504528
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On the occurrence of scyphozoan ephyrae (Cnidaria, Scyphozoa, Semaeostomeae and Rhizostomeae) in the southeastern Brazilian coast Biota Neotropica
Tronolone,Valquiria Baddini; Morandini,André Carrara; Migotto,Alvaro Esteves.
The occurrence of ephyrae of the scyphozoan orders Semaeostomeae and Rhizostomeae is reported for the first time for the Brazilian coast. The specimens, caught in plankton tows in the São Sebastião Channel and the Cananéia lagoon estuarine system, are: Chrysaora lactea (Semaeostomeae), Phyllorhiza punctata (Rhizostomeae), and an unidentified species of Pelagia (Semaeostomeae). A table with all species of scyphozoan with the known life cycle is provided.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Scyphozoa; Semaeostomeae; Rhizostomeae; Ephyra; Life cycle; Brazil.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000200008
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Relações de tamanho e peso das grandes medusas (Cnidaria) do litoral do Paraná, Sul do Brasil Zoologia
Nogueira Jr,Miodeli; Haddad,Maria A..
Relações de tamanho e peso são dados básicos importantes para facilitar estimativas de estoques, de monitoramentos contínuos e de larga escala das espécies, além de permitir a obtenção de valores de biomassa a partir da distribuição de tamanho. Apesar destes dados serem básicos e de reconhecida importância ecológica e sócio-econômica, estudos biométricos das grandes medusas do litoral brasileiro ainda inexistem. Apresenta-se, neste estudo, as relações de tamanho e peso das seis espécies de macromedusas mais comuns no litoral paranaense: Tamoya haplonema Müller, 1859 e Chiropsalmus quadrumanus (Müller, 1859) - Cubozoa; Olindias sambaquiensis Müller, 1861 - Hydrozoa; Chrysaora lactea Eschscholtz, 1829, Lychnorhiza lucerna Haeckel, 1880 e Phyllorhiza punctata...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Água-viva; Biometria; Cubozoa; Hydrozoa; Scyphozoa.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000400033
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Synopsis of knowledge on Cnidaria Medusozoa from Brazil Biota Neotropica
Marques,Antonio C.; Morandini,André C.; Migotto,Alvaro E..
A synopsis of knowledge concerning Medusozoa (Cnidaria) along the Brazilian coast is presented. We generated a data list with all records of medusozoans from Brazil, including information on the distribution of the species and the phase (polyp or medusa) recorded. Currently the number of species of Medusozoa recorded from Brazil is 377 (205 genera and 82 families), with 348 species of hydrozoans, 22 scyphozoans, 3 cubozoans and 1 staurozoan. Geographical and historical analyses were carried out based on the data list. The geographical analysis reveals that knowledge on biodiversity of the group is most inadequate for the North and part of the Northeastern coast. Although the Southeastern coast is the best known region in number of species and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hydrozoa; Scyphozoa; Cubozoa; Staurozoa; Fauna; South Atlantic; Polyp; Medusa; Brazil.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032003000200007
Registros recuperados: 11
Primeira ... 1 ... Última
 

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