Gastropods
Mostrando 13-24 de 54 artigos, teses e dissertações.
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13. Prey preference of the stone crab Platyxanthus crenulatus (Decapoda: Platyxanthidae) in laboratory conditions
The preference for a particular type of prey implies an active behavioral choice of the predator. The present work deals with the prey preference of the large stone crab Platyxanthus crenulatus among similar sized gastropods and bivalves of different substrates using a recent proposed methodology based on a two-stage approach. In laboratory, crabs received d
Nauplius. Publicado em: 2013-06
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14. RelaÃÃes ecolÃgicas entre Melampus coffeus (Gastropoda: Pulmonata) e a serapilheira no mÃdio estuÃrio do rio Pacoti, Cearà / Ecological relations between Melampus coffeus (Gastropoda: Pulmonata) and the leaflitter in the middle estuary of Pacoti river, CearÃ
The litter is essential for the nutrients and organic matter cycles in forests ecosystems. These vegetal detritus are a food source to many groups of animals that act directly on the litter decomposition. Litter also seems to provide microhabitats and works as a shelter for many individuals of the mangrove fauna. The gastropod Melampus coffeus (Linnaeus, 175
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
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15. Atol das Rocas: an oasis for Octopus insularis juveniles (Cephalopoda: Octopodidae)
The habitat, population density, distribution and diet of Octopus insularis Leite & Haimovici, 2008 were studied in the Atol das Rocas Biological Reserve, based on visual census carried out in fixed quadrants. For each octopus den, we collected data on octopus size, substrate, type of den, and food remains around it. A total of 100 octopus dens were found wi
Zoologia (Curitiba). Publicado em: 2011-02
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16. Vascular supply of the central nervous system of the land snail Megalobulimus oblongus (Gastropoda, Pulmonata)
The vascularization of the central nervous system of the snail Megalobulimus oblongus was studied by injection of carmine-gelatin solution into the arterial system and using a histochemical technique for the detection of alkaline phosphatase. The central nervous system of M. oblongus is irrigated by the anterior aorta, from which a series of small branches e
Publicado em: 2010
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17. Biphallia in imposexed females of marine gastropods: new record for Nassarius vibex from Brazil
Brazilian Journal of Biology. Publicado em: 2009-02
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18. Fossils in quaternary micrites of Bodoquena Range, Bonito-MS and their application in paleoenvironmental studies / Fósseis em micritos quaternários da Serra da Bodoquena, Bonito-MS e sua aplicação em estudos paleoambientais
Bonito town and surrounding areas in Mato Grosso do Sul state are tourist attractions related with many quaternary carbonate deposits which form waterfalls, dams and render almost zero turbidity waters. That area is part of the National Park of Bodoquena Range and Pantanal Biosphere Reserve (UNESCO). Calcareous tufa are porous rocks formed by calcium carbona
Publicado em: 2009
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19. Pharmacological characterization of venoms obtained from Mexican toxoglossate gastropods on isolated guinea pig ileum
The protein-containing extracts prepared from the venom ducts of Conus austini, Conus spurius and Polystira albida caused a concentration-dependent inhibition of spontaneous contractions in guinea pig ileum. The most potent extract was obtained from P. albida venom ducts (IC50 = 0.11 ± 0.02 µg protein/mL). The three extracts produced a moderate inhibition
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2008
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20. INFLUÊNCIA DE Furcraea foetida (L.) HAW. SOBRE A SOBREVIVÊNCIA, CRESCIMENTO, REPRODUÇÃO E COMPORTAMENTO DE Subulina octona (BRUGÜIÉRE, 1789) (MOLLUSCA, SUBULINIDAE)
Terrestrial molluscs constitute an important study group in parasitology, because some species can act as hosts for helminth parasites of domestic animals and humans. Moreover, they are agricultural plagues and can cause economic damages. Alternatively, one can use molluscicide substances to interrupt the life cycles of parasitic helminths and reduce damage
Publicado em: 2008
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21. Caracterização tafonômica das concentrações fossilíferas da Formação Cape Melville, Grupo Moby Dick (Mioceno Inferior), Ilha Rei George, Antártica / Taphonomic characterization of fossil concentrations from the Cape Melville Formation, Moby Dick Group (Early Miocene), King Georg Island, Antactica
Works focusing on the taphonomy of fossil concentrations generated in glacial or periglacial environment are rare. In this context, the present dissertation carried out the taphonomic characterization of the fossil concentrations of the Cape Melville Formation, Moby Dick Group (Lower Miocene), King George Island, Antarctica, in order to elucidate the genesis
Publicado em: 2007
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22. Freshwater snails and schistosomiasis mansoni in the state of Rio de Janeiro, Brazil: VI - Noroeste Fluminense Mesoregion
In this paper, the last of a series dealing with the survey of freshwater gastropods of the state of Rio de Janeiro, the results of collections carried out in the Noroeste Fluminense Mesoregion from 2002 to 2005 are presented and revealed the occurrence of 20 species: Antillorbis nordestensis; Biomphalaria glabrata; B. straminea; B. tenagophila; Drepanotrema
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-10
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23. Effect of the current velocity in the distribution of freshwater macroinvertebrates in rivers of Bonito, Brazilian Center-West / Efeitos da velocidade da correnteza na distribuicao de macroinvertebrados limnicos em rios de Bonito, Centro-Oeste
The patterns of distribution and abundance of the freshwater macroinvertebrates are determined by the ambient characteristics that take the differences in the availability of resources and shelters against predation and disturbance, thus influencing, the structure of the communities. The current velocity is one of the more important ambient factors in the di
Publicado em: 2006
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24. Ecologia alimentar e reprodutiva de Marmosops paulensis (Didelphimorphia : Didelphidae) em uma area de Mata Atlantica no sudeste de São Paulo
Marmosops paulensis [Tate, 1931] (Didelphimorphia: Didelphidae) is a small marsupial occurring in montane forests above 800 m in the Brazilian Atlantic forest. The objective of the present study was to evaluate the influence of resource availability on the diet, space use and reproductive patterns of M. paulensis. This study was carried out from August 2002
Publicado em: 2005