repositories = "Scientia Marina"

Encontrado 1,604 documentos, página mostrada 1 de 161

Comparative study on the reproductive biology of Torpedo torpedo (Linnaeus, 1758) and T. marmorata (Risso, 1810) in the central Mediterranean Sea Estudio comparativo en biología reproductiva de las especies simpátricas Torpedo torpedo (Linnaeus 1758) y Torpedo marmorata (Risso, 1810) en el Mar Mediteráneo central

Description: The reproductive biology of Torpedo torpedo (n = 535) and Torpedo marmorata (n = 385), collected in coastal waters of Latium (central Mediterranean Sea, Italy) between September 2000 and October 2001, was studied and compared. Males and females reached a maximum length of 445 and 477 mm TL in T....
Language(s): Inglés

Origin and abundance of beach debris in the Balearic Islands Origen y abundancia de residuos en playas de las Islas Baleares

Description: The abundance, nature and possible sources of litter on 32 beaches on the Balearic Islands (Mediterranean Sea) were investigated in 2005. Mean summer abundances in the Balearics reached approximately 36 items m-1, with a corresponding weight of 32±25 g m-1, which is comparable to the results of oth...
Language(s): Inglés

Growth and reproduction of the gilthead seabream Sparus aurata in Mellah lagoon (north-eastern Algeria) Crecimiento y reproducción de la dorada, Sparus aurata en la laguna de Mellah (nordeste de Argelia)

Description: Gilthead seabream Sparus aurata (L.), a protandrous hermaphrodite, was caught in Mellah lagoon (Algeria) from July 1997 to June 1998. Its age, growth and reproduction were studied. Fish ranged in size from 157 to 610 mm total length and weighed from 60 to 4000 g wet weight. There were fish aged 1+ t...
Language(s): Inglés

Site-attachment behaviour of Oblada melanura (Linnaeus, 1758) (Osteichthyes: Sparidae) benthic larvae: a quantitative approach Comportamiento de asociación al sustrato de las larvas bentónicas de Oblada melanura (Linnaeus, 1758) (Osteichthyes: Sparidae): una aproximación cuantitativa

Description: The site-attachment behaviour of O. melanura settlers was examined in an estuarine area of western Greece. The approach that was followed included underwater assignments of shoal identities and continuous recording of specific behavioural traits. Variations between ontogenetic stages with respect to...
Language(s): Inglés

Decapod crustacean assemblages from littoral bottoms of the Alborán Sea (Spain, west Mediterranean Sea): spatial and temporal variability Las comunidades de crustáceos decápodos de fondos litorales del mar de Alborán (España, Mediterráneo occidental): variabilidad espacial y temporal

Description: The structure of decapod crustacean assemblages living in shallow waters (5 to 25 m depth) in an area of the Alborán Sea (Mediterranean Sea) neighbouring the Strait of Gibraltar was studied. The relatively high richness found in this area is probably due to the diversity of substrata and the conflue...
Language(s): Inglés

Comparison of diamond- and square-mesh codends in the hake (Merluccius merluccius L. 1758) trawl fishery of the Adriatic Sea (central Mediterranean) Comparación de la malla de rombo y cuadrada en la pesquería de arrastre de la merluza (Merluccius merluccius L. 1758) en el mar Adriático (Mediterráneo central)

Description: A traditional codend (40 mm diamond mesh) and an experimental codend (40 mm square mesh) made of 2.6 mm diameter knotless PA netting were tested on a commercial trawl net on a sandy-muddy bottom (~70 m depth) of the Adriatic sea in order to assess the size selectivity of European hake (Merluccius me...
Language(s): Inglés

New data on Gaidropsarus granti (Regan, 1903) (Gadiformes: Lotidae) from the Mediterranean Sea, with emphasis on its parasites Nuevos datos acerca de Gaidropsarus granti (Regan, 1903) (Gadiformes: Lotidae) en el Mediterráneo occidental, con énfasis sobres sus parásitos

Description: One adult male Azores rockling Gaidropsarus granti was captured by trammel nets at a depth of about 250 m near the coast of Arbatax (Sardinia, Italy) in early March 2007. This new report confirms a wide bathymetric range for this species. Macroscopic and microscopic analysis of the gonad showed a sp...
Language(s): Inglés

Osmoregulation as a potential factor for the differential distribution of two cryptic gobiid species, Pomatoschistus microps and P. marmoratus in French Mediterranean lagoons La osmoregulación como factor potencial de la distribución diferencial de dos especies crípticas de góbido, Pomatoschistus microps y P. marmoratus, en las lagunas mediterráneas francesas

Description: This study was aimed at the detection of potential differences in the osmoregulatory capacity of two cryptic species of gobies, Pomatoschistus microps (Krøyer, 1838) and P. marmoratus (Risso, 1810), that have different distributions in French Mediterranean lagoons characterised by different salinity...
Language(s): Inglés

Description of the East Brazil Large Marine Ecosystem using a trophic model Descripción del gran ecosistema marino del noreste de Brasil usando un modelo trófico

Description: The objective of this study was to describe the marine ecosystem off northeastern Brazil. A trophic model was constructed for the 1970s using Ecopath with Ecosim. The impact of most of the forty-one functional groups was modest, probably due to the highly reticulated diet matrix. However, seagrass a...
Language(s): Inglés

Effects of hydraulic dredging on the physiological responses of the target species Chamelea gallina (Mollusca: Bivalvia): laboratory experiments and field surveys Impacto del dragado hidráulico en las respuestas fisiológicas de la especie objetivo Chamelea gallina (Mollusca: Bivalvia): experimentos de laboratorio y muestreos de campo

Description: The effects of mechanical stress in the Venus clam Chamelea gallina during hydraulic dredging were assessed in both laboratory and field studies in order to measure physiological biomarkers at organism level (clearance rate, respiration rate, scope for growth, and survival in air test). In the labor...
Language(s): Inglés

Encontrado 1,604 documentos, página mostrada 1 de 161

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