Consulta: subjectFacets:"Persian Gulf"
Registros recuperados: 10
Data/hora: 11/06/2024 08:22:01

Rising the Persian Gulf Black-Lip Pearl Oyster to the Species Level: Fragmented Habitat and Chaotic Genetic Patchiness in Pinctada persica
Provedor de dados: 5
Autores: Ranjbar, Mohammad Sharif; Zolgharnien, Hossein; Yavari, Vahid; Archangi, Bita; Salari, Mohammad Ali; Arnaud-haond, Sophie; Cunha, Regina L.
Marine organisms with long pelagic larval stages are expected to exhibit low genetic differentiation due to their potential to disperse over large distances. Growing body of evidence, however, suggests that marine populations can differentiate over small spatial scales. Here we focused on black-lip pearl oysters from the Persian Gulf that are thought to belong to the Pinctada margaritifera complex given their morphological affinities. This species complex includes seven lineages that show a wide distribution ranging from the Persian Gulf (Pinctada margaritifera persica) and Indian Ocean (P. m. zanzibarensis) to the French Polynesia (P. m. cumingii) and Hawai'i (P. m. galtsoffi). Despite the long pelagic larval phase of P. m. persica, this lineage is absent...
Tipo: Text
Palavras-chave: Black-lip pearl oysters; Pinctada persica; Species delimitation; Persian Gulf; Fragmented habitat.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00319/43040/42631.pdf

Marteilia lengehi n.sp., parasite de l'huitre Crassostrea cucullata Born
Provedor de dados: 5
Autores: Comps, Michel.
A new record of a parasite designated Marteilia lengehi sp.nov. The Persian Gulf oyster Crassostrea cucullata was the host
Tipo: Text
Palavras-chave: Persian Gulf; ISW; Marteilia lengehi; Crassostrea cucullata; New species; Parasites.
Ano: 1976
URL: http://archimer.ifremer.fr/doc/1976/publication-1802.pdf

A model of the general circulation in the Persian Gulf and in the Strait of Hormuz: Intraseasonal to interannual variability
Provedor de dados: 5
Autores: Pous, Stephane; Lazure, Pascal; Carton, Xavier.
Previous studies modeling the circulation and thermohaline structure in the Persian Gulf have suggested that interannual variability and vertical mixing processes could explain the model biases when compared to the few observations available. Here, a realistic, interannual, high-resolution model of the Persian Gulf is presented, validated against observations and then used to describe the intraseasonal to interannual variability in the circulation, water mass formation and exchange through the Strait of Hormuz. Sensitivity experiments to model settings, in particular vertical mixing parameterizations, have been performed in order to have the best comparison with all available observations. Main circulation and water mass characteristics correspond well to...
Tipo: Text
Palavras-chave: Persian Gulf; Strait of Hormuz; Numerical model; Hydrology; Currents; Interannual variability.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00244/35563/35324.pdf

Dynamique de bord ouest en mer d'Arabie
Provedor de dados: 5
Autores: Vic, Clement.
This PhD aims to investigate some western boundary processes in the Arabian Sea : (i) the life cycle of the socalled Great Whirl, a persistent mesoscale eddy; (ii) the dynamics of the Persian Gulf outflow, a marginal sea dense outflow; and (iii) the seasonal Oman upwelling, a coastal upwelling forced by summermonsoonal winds. The cornerstone of all these phenomena is their locationat a western boundary, which makes then being influenced by both localforcing (e.g., monsoonal winds) and remote forcing (Rossby waves and wesward drifting eddies). Specifically, the later are expected to impact the western boundary dynamics since the low latitude of the Arabian Sea implies a fast westward propagation of long Rossby waves and eddies. Moreover, waves are...
Tipo: Text
Palavras-chave: Mer d'Arabie; Outfow; Golfe d'Oman; Golfe Persique; Ondes de Rossby; Upwelling; Dynamique de mésoéchelle et sous-mésoéchelle; Modélisation réaliste; Interactions tourbillon-topographie; Ocean modelling; Mesoscale and submesoscale dynamics; Arabian Sea; Great Whirl; Outflow; Gulf of Oman; Persian Gulf; Rossby waves; Eddy-topography interactions.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00498/60934/64328.pdf

A Process Study of the Wind-Induced Circulation in the Persian Gulf
Provedor de dados: 5
Autores: Pous, Stephane; Carton, Xavier; Lazure, Pascal.
A shallow-water model, coupled with a three dimensional, hydrostatic ocean model, is used to study the wind induced circulation, and the Shatt-al-Arab river plume expansion, in the Persian Gulf. The models are used in an idealized configuration. The following results are obtained: 1) with northwesterly winds, a double gyre is formed: this gyre is cyclonic in the south and anticyclonic in the north. Southeastward currents flow along the Iranian and Arabian coast where the wind stress at the surface dominates the pressure gradient related to the free surface slope, and conversely in the deeper region of the Gulf; 2) In the eastern part of the Gulf, the cyclonic gyre intensifies, as observed and reported in the literature; 3) For northwesterly winds, the...
Tipo: Text
Palavras-chave: Persian Gulf; Wind-Induced Circulation; Hydrodynamical Modeling.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00284/39521/38014.pdf

A Process Study of the Tidal Circulation in the Persian Gulf
Provedor de dados: 5
Autores: Pous, Stephane; Carton, Xavier; Lazure, Pascal.
A homogeneous shallow-water model with free surface is used to model the tidal circulation in the Persian Gulf. The numerical finite-difference model includes harmonic diffusion of horizontal momentum and quadratic bottom friction, it has a 9 km mesh size and it is forced by 7 tidal components at its southern boundary. High precision bathymetric data are used to obtain the bottom topography. The numerical model is run for more than a year. The results are the following: 1) The model accurately reproduces the tidal phase and amplitude observed at 42 tidal gauges in the region. This accuracy is attributed to the presence of the 7 components which are able to interact nonlinearly; 2) The amphidromic points are also well positioned by the model due to a proper...
Tipo: Text
Palavras-chave: Persian Gulf; Barotropic Tide; Hydrodynamical Modeling; Comparison with Data.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00284/39520/38013.pdf

A new snapping shrimp (Crustacea Decapoda, Alpheidae, Alpheus) from the estuarine mudflats of Kuwait
Provedor de dados: 16
Autores: Anker, A.; Grave, S. De.
A new snapping shrimp, Alpheus lutosus spec. nov., is described from the intertidal mudflats of Bubiyan Island, northern Kuwait, south of the vast Shatt-Al-Arab delta. The new species appears to be closely related to Alpheus hoplocheles Coutière, 1897 from similar estuarine habitats in China and Japan, differing mainly in the absence of a sharp distolateral tooth on the palm of the major chela, the less marked rostral carina, and the number of spines on the propodus of the third pereiopod. Both A. lutosus spec. nov. and A. hoplocheles are unique within the A. edwardsii species group in having a strong sharp distomesial tooth on the palm of the otherwise typical edwardsii-type major chela. At the type locality, A. lutosus spec. nov. is often associated with...
Tipo: Article / Letter to the editor
Palavras-chave: Caridea; Alpheidae; Snapping shrimp; Alpheus; New species; Mudflat; Kuwait; Persian Gulf; Facultative association; Goby; 42.74.
Ano: 2009
URL: http://www.repository.naturalis.nl/record/315878

The Lioconcha castrensis species group (Bivalvia : Veneridae), with the description of two new species
Provedor de dados: 16
Autores: Meij, S.E.T. van der; Moolenbeek, R.G.; Dekker, H.
Part of the genus Lioconcha Mörch, 1853 is reviewed. Species strongly resembling Lioconcha castrensis (Linnaeus, 1758) are discussed and two new species are described: Lioconcha arabaya n. sp. from the Northwest Indian Ocean and Lioconcha rumphii n. sp. from Thailand and Sumatra. These three species, together with Lioconcha macaulayi Lamprell &amp; Healy, 2002, share many morphological similarities and we suspect them to be closely related. They are referred to as the Lioconcha castrensis species group. Furthermore, lectotypes of Venus castrensis Linnaeus, 1758, and Venus fulminea Röding, 1798, are designated. The latter is considered a junior synonym of V. castrensis.
Tipo: Article / Letter to the editor
Palavras-chave: Indo-Pacific; Mollusca; Persian Gulf; Red Sea; Taxonomy.
Ano: 2010
URL: http://www.repository.naturalis.nl/record/409032

Cytotoxic activity of some marine brown algae against cancer cell lines
Provedor de dados: 48
Autores: KHANAVI,MAHNAZ; NABAVI,MARYAM; SADATI,NARGESS; SHAMS ARDEKANI,MOHAMMADREZA; SOHRABIPOUR,JELVE; NABAVI,SEYED MOHAMMAD B; GHAELI,PADIDEH; OSTAD,SEYED NASSER.
The aim of this study was to investigate the in vitro cytotoxic activity of total extract of MeOH (70%) and partition fractions of hexan, chloroform (CHCL3), ethylacetate (EtOAc) and MeOH-H2O of brown algae species (Sargassum swartzii, Cystoseira myrica, Colpomenia sinuosa) found in the Persian Gulf against in different cell lines including HT-29, Caco-2, T47D, MDA-MB468 and NIH 3T3 cell lines by MTT and AnnexinV-PI assay. The hexan fraction of S. swartzii and C. myrica showed selective cytotoxicity against proliferation of Caco-2 cells (IC50&lt;100 &amp;#956;g/ml) T47D cell line (IC50&lt;100 &amp;#956;g/ml), respectively. S. swartzii and C. myrica were also observed for increasing apoptosis in Caco-2 and T47D cells. Total extract and fractions of C....
Tipo: Journal article
Palavras-chave: Colpomenia sinuosa; Cystoseira myrica; Cytotoxic activity; MTT assay; Persian Gulf; Sargassum swartzii.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000100005

The Anti-melanogenesis Activities of Some Selected Brown Macroalgae from Northern Coasts of the Persian Gulf
Provedor de dados: 52
Autores: Namjooyan,Foroogh; Farasat,Massoumeh; Alishahi,Mojtaba; Jahangiri,Alireza; Mousavi,Hamideh.
Abstract Melanogenesis is a biological process which led to the synthesis of melanin pigment. Abnormal melanin production results in melasma, solar lentigo, post inflammatory melanoderma, etc. In this study, we examined the potential inhibitory effects of 17 brown macroalgae from Persian Gulf on melanogenesis. The effects of various concentrations (100, 250 and 500 µg/mL) of methanolic extracts of macroalgae belonging to four genera (including: Padina, Colpomonia, Cystoseira and Sargassum) were studied on oxidation of L-Dopa by mushroom tyrosinase. Subsequently, the activity of macroalgae with high inhibitory effect on monophenolase activity of mushroom tyrosinase and zebrafish was investigated using L-tyrosine as a substrate. Anti-melanogenesis effects of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Algae; Persian Gulf; Melanogenesis; Mushroom tyrosinase; Zebrafish.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100301