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Benthic shallow-water hydroids (Cnidaria, Hydrozoa) of the coast of São Sebastião, Brazil, including a checklist of Brazilian hydroids
- Á. Migotto
The paper presents the results of a general survey of the hydroid fauna of the coastal region of the Sao Sebastiao Channel, Sao Paulo State, Brazil, and contains a synopsis of the hydroids recorded from the Brazilian coast, the list now including 107 species.
A guideline to nematocyst nomenclature and classification, and some notes on the systematic value of nematocysts*
Cnidocysts are membrane-enclosed cellular organelles or secretions of the golgi apparatus, consisting of a capsule and an eversible tubule, which are present only in the Anthozoa, whereas spirocysts are found exclusively in cerianthids.
Vertical distribution of benthic marine organisms on rocky coasts of the Fernando de Noronha Archipelago (Brazil)
The scarcity of sea urchins, along with the dominance of algae known to produce chemical feeding deterrents or to have a calcareous nature, points towards a strong pressure by predators, with fishes probably playing a key role in the maintenance of the structure of this subtidal community.
Checklist of the Cnidaria Medusozoa of Brazil
Uma lista dos Cnidaria Medusozoa marinhos do Brasil foi composta a partir de registros de ocorrencia disponiveis na literatura. Ate o momento, ha um total de 373 especies registradas para o Brazil:…
Epizoic Ophiothela brittle stars have invaded the Atlantic
A molecular phylogenetic analysis of the 10 named species of 6-armed Ophiothela is required to establish whether they comprise one species (as suggested by Clark 1976) and possibly identify the source of colonization.
Cryptic species, life cycles, and the phylogeny of Clytia (Cnidaria: Hydrozoa: Campanulariidae)
The results suggest that the nearly-cosmopolitan distribution attributed to some species of Clytia may be due to the non-recognition of morphologically similar species with more restricted ranges.
Synopsis and annotated checklist of Recent marine Bryozoa from Brazil
A checklist of recent marine bryozoans recorded in the literature from Brazil is presented, including records by state and citations for species with synonyms utilized in Brazilian works.
Skin lesions in envenoming by cnidarians (Portuguese man-of-war and jellyfish): etiology and severity of accidents on the Brazilian coast.
- V. Haddad Júnior, F. Silveira, Á. Migotto
- MedicineRevista do Instituto de Medicina Tropical de Sao…
- 1 February 2010
Patients from the North Coast region of São Paulo State, Brazil were seen and there was an association between skin marks and probable accident etiology, as the Cubozoa Class (box jellyfish) and Portuguese man-of-war cause the most severe accidents.
Evidence for Polyphyly of the Genus Scrupocellaria (Bryozoa: Candidae) Based on a Phylogenetic Analysis of Morphological Characters
The bryozoan genus Scrupocellaria comprises about 80 species in the family Candidae and is redefined according to four morphological features: vibracular chamber with a curved setal groove, ooecium with a single ectooecial fenestra, two axillary vibracula, and a membranous operculum with a distinct distal rim.
Kinematic comparison of bell contraction by four species of hydromedusae *
The great variety of bell morphologies among the hydromedusae have clear hydrodynamic correlates (Daniel 1983, 1984, 1985; Colin and Costello 1996) which are related to foraging mode and bell form among ambush-foraging medusae may be expected to fall towards the prolate end of the spectrum among hydromingusan bell shapes.