Seabather's eruption: report of case in northeast region of Brazil

Seabather's eruption is characterized by the occurrence of intensely itchy erythematous papules observed mainly in the region covered by swimwear. The dermatitis occurs due to the contact of planula larvae of scyphomedusae Linuche unguiculata with the skin. The swimsuit pressure triggers the action of the poisonous stinging structures carried by the larvae. The case described occurred in a child who, while bathing in the ocean waters of the Northeast coast of Bessa's Beach located in the city of Joao Pessoa, state of Paraiba, showed typical clinical signs of the disease. It was concluded that the report of the case showed clinical and therapeutic implications for doctors working in all of the Brazilian coastal areas

Dissolved inorganic nutrients in fresh, meso-oligohaline and mixo-poli-euhaline mater in the channel of " lagoa dos patos", Rio Grande do Sul, Brasil

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Effect of Fish and Mesozooplankton Manipulation on the Phytoplankton Community in the Patos Lagoon Estuary, Southern Brazil

An enclosure experiment in the Patos Lagoon estuary, southern Brazil (32°S, 52°W) investigated the response of phytoplankton to the enhancement of mesozooplankton and fish abundance. Addition of nutrients (NO3 − and PO4 −) stimulated the growth of 3–20 μm diameter phytoplankton, especially the diatomCylindrotheca closterium, which, in turn, was heavily grazed by the dominant mesozooplankter, the copepodAcartia tonsa. Acartia did not consume small (2–3 μm) autotrophic flagellates and the cyanobacteriaAnabaena sp., despite their high cell number. Largest grazing ofC. closterium by the copepod occurred only after a decrease of ciliate abundance. The addition of mesozooplankton did not change the levels of primary production, but it significantly increased the phytoplankton assimilation number. Highest chlorophylla concentrations were measured in enclosures stocked with juveniles of the fishXenomelaniris brasiliensis. The large phytoplankton biomass and low mesozooplankton abundance found in this treatment indicates an, effective predator-mediated action on the phytoplankton community

Seabather s eruption: report of the six cases in southern Brazil

O prurido do traje de banho ou seabather s eruption é uma dermatite intensamente pruriginosa que ocorre pelo contato com larvas plânulas do cnidário cifozoário Linuche unguiculata, especialmente sob os trajes de banhistas. As larvas disparam seus nematocistos a partir de cnidócitos ou células urticantes de defesa na pele da vítima, causando uma típica erupção pápulo-eritemato-pruriginosa. Os primeiros cinco casos descritos no Brasil foram publicados em 2001, no litoral Sudeste (Ubatuba, SP), obtendo-se associação com larvas de Linuche unguiculata, uma vez que a ocorrência e o ciclo de vida do cnidário já haviam sido estudados no Canal de São Sebastião, SP. Os autores relatam os seis casos na região Sul do Brasil (Estado de Santa Catarina), enfatizando os aspectos clínicos e a pesquisa para identificação do agente na água do mar local.Seabather s eruption is an intensely pruriginous form of dermatitis that occurs after contact with the planula larvae of the cnidarian scyphozoan Linuche unguiculata, especially under the bather s clothes. They discharge their poisonous nematocysts from the cnidocytes, causing a typical eruption presenting papules, erythema and intense itching. The first five cases described in Brazil were published in 2001 and occurred on the southeastern coast (Ubatuba, State of São Paulo). Those cases were linked to larvae of Linuche unguiculata, because the occurrence and life cycle of this cnidarian had been studied in the São Sebastião Channel, State of São Paulo. The present authors report the six cases observed in southern Brazil (State of Santa Catarina), with a description of the typical clinical aspects and an investigation linking the cases to Linuche unguiculata in the local seawater