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Population recovery of the sea urchin Lytechinus variegatus in a seagrass flat (Araruama Lagoon, Brazil): the role of recruitment in a disturbed environment
Summary The size, structure, and density of a population of Lytechinus variegatus were recorded from a shallow seagrass bed (Halodule wrightii) at 40-day intervals from April 1994 to April 1995. AExpand
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Genetic divergence and assortative mating between colour morphs of the sea urchin Paracentrotus gaimardi
Some species of sea urchins feature large variation in pigmentation. This variability may be the result of phenotypic plasticity or it may be associated with genetic divergence between morphs.Expand
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Epizoic Ophiothela brittle stars have invaded the Atlantic
It was thought that ophiuroids of the genus Ophiothela are confined to Pacific waters (Clark 1976). However, animals provisionally identified as Ophiothela mirabilis have founded emergent populationsExpand
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The reproductive cycle of Asterina stellifera (Möbius) (Echinodermata: Asteroidea) in the Cabo Frio region, southeastern Brazil
Reproduction of Asterina stellifera was studied in two populations from the Cabo Frio region, southeastern Brazil. One was located in an intertidal seagrass flat at Japonês Island (1994–1995); theExpand
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Lack of science support fails Brazil
On 10 September 2010, Science published the Report “Human SIRT6 promotes DNA end resection through CtIP deacetylation” by A. Kaidi, B. T. Weinert, C. Choudhary, and S. P. Jackson (1). On 19 AugustExpand
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Bathymetric distribution and population size structure of paxilosid seastars (Echinodermata) in the Cabo Frio upwelling ecosystem of Brazil
Sampling of paxillosid seastars by 20-min trawls was made monthly at depths of 30, 45 and 60 m, from January, 1986 to December, 1988. Bottom water and sediments were analyzed. Four thousand oneExpand
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Intraspecific genetic structure, divergence and high rates of clonality in an amphi‐Atlantic starfish
Intraspecific genetic diversity and divergence have a large influence on the adaption and evolutionary potential of species. The widely distributed starfish, Coscinasterias tenuispina, combinesExpand
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Feeding niche breadth and feeding niche overlap of paxillosid starfishes (Echinodermata: Asteroidea) from a midshelf upwelling region, Cabo Frio, Brazil.
Specimens of paxillosid starfishes ( Astropecten brasiliensis, A cingulatus and Luidia ludwigi scotti)were sampled monthly at three depths (30, 45 and 60 m) for 13 months. Stomach contents were ana-Expand
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Spatial distribution of bivalvia (Mollusca) in the soft-bottoms of Ilha Grande Bay, Rio de Janeiro, Brazil
A distribuicao espacial dos bivalves e sua relacao com a granulometria e os teores de materia orgânica e silte-argila foram estudados no Saco do Ceu. Obteve-se amostras de fauna e sedimento em 39Expand
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Ecological roles of natural products from the marine sponge Geodia corticostylifera
In the Brazilian coast, high numbers of the small brittle star Ophiactis savignyi usually live associated with the sponge Geodia corticostylifera (Demospongiae, Geodidae), but not with otherExpand
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