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| Carvalho,Carolina Delgado de; Corneta,Carolina Marocco; Uieda,Virginia Sanches. |
| Schools of mullets, Mugilidae, are abundant in estuaries and shallow marine waters. We report on the schooling behavior of juvenile white mullet, Mugil curema, in the estuary of the Canto da Paciência stream, in Ubatuba, southeastern Brazil. Schools of small fish (15 to 35 mm TL) were composed of a larger number of individuals (up to a hundred individuals), and were found feeding mainly in shallow nearshore waters, whereas schools of larger fish (40 to 100 mm TL) were observed only in deeper waters. Three patterns of swimming were observed for the schools: stationary feeding, slow movement while searching for food, and rapid displacement. The variations observed in school structure and behavior seem to be related to the balance between predation risk and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: White mullet; Juvenile fish; Coastal river. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000100012 |
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| CAVALCANTE,KAOLI P.; TREMARIN,PRISCILA I.; FREIRE,EDUARDO G.; LUDWIG,THELMA A.V.. |
| ABSTRACTThe species originally described from brackish waters of the Venetian Lagoon asNitzschia persuadens is a diatom rarely cited in the literature since its proposition and it is here recorded for the first time in a freshwater environment in South America. Morphological features of this species, such valve slightly panduriform, with a longitudinal straight fold of the valve face, poroidal areolae, and strongly eccentric raphe system clearly assign this species to Tryblionella, and the transfer was made. Here we present new observations on the frustule morphology and comparisons with related species. Light and scanning electron microscopy data of Tryblionella persuadens comb. nov. from Cachoeira River, Northeastern Brazil are documented. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillariophyceae; Brazil; Coastal river; Nitzschia persuadens. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401419 |
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| Serra,Jane Piton; Carvalho,Fernando Rogério de; Langeani,Francisco. |
| Little is known about the ichthyofauna from South American coastal plain, specially concerning the Mata Atlântica (Atlantic Forest) rivers and streams, as there are regions little explored which may have non-described or rare species. An example is the Parque das Neblinas, a Natural Patrimony Private Reserve (RPPN) in the Bertioga municipality, São Paulo state, where no ichthyofaunal study had been done before. The park's hydrography is made up by the rio Itatinga with its various tributary streams, which flow into the Itapanhaú river basin. Nine sites were sampled using sieves, seines and gill nets; 1,086 specimens of seven species, three orders and five families were captured. The most representative species were Astyanax paranae, Phalloceros... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Endangered species; Fauna sharing; Conservation; Coastal river; Fauna inventory; Southeastern Brazil. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000100011 |
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