Results 91 to 100 of about 518 (162)

Physiological responses and scope for growth of Ruditapes decussatus from Ria Formosa, southern Portugal, exposed to increased ambient ammonia

Scientia Marina, 2004
In this study we investigate the effects of exposure to increased ambient ammonia-N concentrations as a cause of decreased scope for growth and mortality of R.decussatus during the summer months in Ria Formosa, southern Portugal.
Paula Sobral, Sandra Fernandes
doaj   +1 more source

In situ potential use of metallothionein as a biomarker of cadmium contamination in Ruditapes decussatus

Ecotoxicology and Environmental Safety, 2009
Cadmium (Cd) and metallothionein (MT) concentrations were analysed in the gills and digestive gland of clams Ruditapes decussatus collected from two sites of the Gulf of Gabès (Tunisia) which differ by their degree of pollution. The effect of biotic (maturity stages, protein, sex and body mass) and abiotic factors (temperature, salinity, site and ...
W, Smaoui-Damak, B, Berthet, A, Hamza-Chaffai   +2 more
openaire   +2 more sources

Histological study of the gonadal development of Ruditapes decussates (L.) (Mollusca: Bivalvia) and its relationship with available food

Scientia Marina, 2005
This article describes the effects of food availability on the sexual maturation of Ruditapes decussates through histological examination of the gonadal tissue. Three food rations were tested: High (H: 1 mg. organic matter.
Marina Delgado, Alejandro Pérez Camacho
doaj   +1 more source

Kinetic model of cadmium accumulation and elimination and metallothionein response in Ruditapes decussatus

Environmental Toxicology and Chemistry, 2007
Abstract The aim of the present study was to determine the response of metallothionein (MT) during Cd accumulation and elimination in different tissues of the estuarine bivalve Ruditapes decussatus exposed to two nominal Cd concentrations (4 and 40 μg/L) for 40 d, followed by a depuration period of 50 d.
Serafim, Angela, Bebianno, Maria João
openaire   +3 more sources

Impact of Exposure Routes of Copper Oxide Nanoparticles in the Clam Ruditapes decussatus

Fishes
The increasing production of diverse applications of engineered nanoparticles along with their potential release into the marine environment from both point and diffuse sources have become a significant concern for ocean health.
Maria J. Bebianno, Mustafa Tuncsoy, Thiago L. Rocha, Tania Gomes, Taina Garcia   +4 more
doaj   +1 more source

Chemical Induction of Metamorphosis in Ruditapes decussatus and Venerupis corrugata: Concentration and Time-Dependent Effects of Epinephrine and GABA

Fishes
Metamorphosis is a critical bottleneck in the bivalve life cycle, usually associated with high mortality and asynchronous development under hatchery conditions. Synthetic chemical inducers are widely used to overcome these constraints.
Beatriz Neves Gregório, Ana Rato, Sandra Joaquim, Marisa Castro, Eric Guévélou, Andreia Cruz, Domitília Matias   +6 more
doaj   +1 more source

Effect of the High Temperature on Growth, Metabolism, and Fatty Acid Profile of the Clam Ruditapes decussatus Culture with and Without Substrate

Animals
Rising seawater temperatures associated with climate change are expected to increasingly challenge the sustainability of bivalve aquaculture, particularly in estuarine environments where thermal variability is naturally high.
Miguel Torres-Rodríguez, Ismael Hachero-Cruzado, José I. Navas-Triano   +2 more
doaj   +1 more source

Explotación de recursos costeros durante el Neolítico en el área de la Reserva de Urdaibai : Los moluscos de la cueva de Kobaederra (Kortezubi, Bizkaia) [PDF]

Munibe Antropologia-Arkeologia, 2009
El aprovechamiento de recursos malacológicos ha sido una constante en las estrategias de subsistencia de los cazadores recolectores que poblaron la región cantábrica durante el Paleolítico superior y el Mesolítico.
Gutierrez Zugasti, F. Igor
doaj  

Are iron ore microparticles toxic for the European clam Ruditapes decussatus? Response elements from biomarker activities and in silico modeling. [PDF]

Saudi J Biol Sci, 2023
Aillal M, Khazri A, Al-Hoshani N, Boufahja F, Beyrem H, Yahya Lafdal M.   +5 more
europepmc   +1 more source

Effect of the alveolate parasite Perkinsus olseni infection on sexual maturation and spawning efficiency of the clam Ruditapes decussatus. [PDF]

Parasitology, 2023
Fernández-Boo S, Duarte C, Guévélou E, Sousa J, Freitas R, Joaquim S, Costas B, Magalhães L, Matias D, Cruz A.   +9 more
europepmc   +1 more source