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Showing 1 to 5 of 5 for “"Estrelas-do-mar"”.
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Variação temporal em estrelas-do-mar Asterina stellifera (Echinodermata: Asteroidea) na Baía de Guanabara, Rio de Janeiro
Guanabara Bay, located in the State of Rio de Janeiro, is an area of multiple uses (e.g. ecology, tourism, fishing). The Bay has been through a process of environmental degradation, due to populational and industrial growth on its neighbourhoods. Morphometrical and numerical data on the seastar …
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Contribuição ao estudo do gênero Echinaster Muller & Troschel, 1840 (Echinodermata: Asteroidea) no litoral brasileiro
… obtained: it was only found E. echinophorus (Lamarck), in the Northeast and E. brasiliensis Müller & Troschel in Southeast and South Brazil. E sentus, E. antonioensis and E. spinulosus when cited from Southeastern and Southern Brazilian coast, are synonymised with E. brasiliensis. E. …
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Distribuição, abundância e hábito alimentar de Asteroidea (Echinodermata) de fundos inconsolidados da Plataforma Continental do Cabo Frio, RJ
… by a 10 m otter-trawl. Twenty minute hauls were done along the 30, 45 and 60 m isobates off Maçambaba Beach. Water and sediment samples were obtained at each depth. Prey denaities were assessed by a Van-Veen grab (0, 1 m2 ) in January, 1988. Asteroids were measured, weighed and aborally cut to …
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Biologia reprodutiva e estrutura de duas populações de Coscinasterias tenuispina (Lamarck, 1816) (Echinodermata: Asteroidea) na região do Cabo Frio, Rio de Janeiro
… occurs on subtidal region at Prainha, Arraial do Cabo, and the other occurs on intertidal region at Praia da Ferradura, Búzios. Gonad indices of both populations showed low reproductive potential, and the histological analyses recorded that gametes were released during all months. A reciprocal …
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Ciclo reprodutivo de Echinaster (Othilia) brasiliensis Müller & Troschel, 1842 (Echinodermata: Asteroidea) na região do Cabo Frio, RJ
… and mesovitellogenic oocytes (60-160μm) were the dominant size-class in all samples. Several size classes of oocytes were found together in may ovaries along the studied period. No spent ovaries were found. Probably, the ovaries were not empty for the recovering. The pyloric caeca did not show an …