Publications by authors named "Renato Mitsuo Nagata"
Article Synopsis
- Ceriantharia is a subclass of marine invertebrates known as tube-dwelling organisms, with five species found in specific oceans but none recorded in the South Atlantic. A new species from Uruguay and Brazil is described based on its life cycle.
- The research involved collecting larvae using a plankton net and observing their development over two years, along with descriptions of adult specimens collected in Uruguay, focusing on their anatomy and morphology.
- Findings revealed a unique type of larva that briefly exists in plankton, ultimately developing into polyps with distinct features and a novel crawling behavior not previously known in Ceriantharia.
Species responses to stress are expected to be dependent on their life-history strategy. In this study, we compare the responses of two free-living marine nematodes, Litoditis marina and Diplolaimella dievengatensis, both considered opportunistic, fast-growing, and stress-tolerant species, to the exposure to sublethal concentrations of sodium dodecyl sulfate (SDS) surfactant. Specifically, we evaluated the growth and reproduction rates, as well as the survival of individuals exposed from eggs and/or juveniles (J1) onwards.
View Article and Find Full Text PDFThis study is the first faunistic inventory of hydromedusae from the inner continental shelf of Paraná State. We describe the composition of hydromedusae species, collected with bottom-trawl and Hensen nets, in campaigns carried out from 1997 to 2006. We analyzed 17,797 specimens from 578 samples, and provide descriptions, photographs, and information about the biology of the 22 species found.
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