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Registros recuperados: 15
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A Sea Change : Exotics In The Eastern Mediterranean 20
Galil, B.S.; Zenetos, A..
The eastern Mediterranean is susceptible to biological invasions because of its placement between the Atlantic, Pontic and Erythrean regions, busy maritime traffic, and lagoons and bays that are crowded with fish and shellfish farms. However, the greatest influx of invaders resulted from the opening of the Suez Canal in 1869, which allowed entry of Indo-Pacific and Erythrean biota. Exotic macro phytes, invertebrates and fish are found in most coastal habitats in the eastern Mediterranean. Some invaders have outcompeted or replaced native species locally, some are considered pests or cause nuisance, whereas other invaders are of commercial value. However, at variance with other invaded seas, the invasion into the eastern Mediterranean has increased the...
Tipo: Book Section Palavras-chave: Aegean; Red Sea; Shipping Mariculture; Suez Canal; Biological Invasions; Levantine; Ionian; Fish species; Aquatic living resources; Invasive species; Http://aims.fao.org/aos/agrovoc/c_49865.
Ano: 2002 URL: http://hdl.handle.net/1834/672
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A taxonomic survey of seaweeds from Eritrea 16
Ateweberhan, M.; Prud’homme van Reine, W.F..
A survey of seaweeds was made in Eritrea in December 1995 and January 1996 on some islands of the Dahlak Archipelago and the surroundings of the port town of Massawa. During our study 101 specific and infraspecific taxa were identified, including 26 Chlorophyta, 20 Phaeophyta and 55 Rhodophyta. The survey resulted in 36 new records for Eritrea (11 Chlorophyta, 7 Phaeophyta and 18 Rhodophyta). Of these Eritrean records, 26 are new for the Red Sea (5 Chlorophyta, 4 Phaeophyta and 17 Rhodophyta). Comparison of records of seaweeds from localities in Eritrea to those from other localities in Eritrea as well as from other coasts of the western Indian Ocean have revealed that the regional distribution of seaweeds in the Red Sea is very patchy and that generally...
Tipo: Article / Letter to the editor Palavras-chave: Benthic marine macroalgae; Biogeography; Eritrea; Red Sea; Taxonomy.
Ano: 2005 URL: http://www.repository.naturalis.nl/record/524925
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Age precision and growth rate of Rhabdosargus haffara (Forsskål, 1775) from Hurghada fishing area, Red Sea, Egypt 5
Osman, Yassein A. A.; Mehanna, Sahar F; El-mahdy, Samia M; Mohammad, Ashraf S; Mahe, Kelig.
The age and growth of the haffara seabream, Rhabdosargus haffara (Forsskål, 1775) from Hurghada fishing area, Red sea, Egypt, were investigated using a sample of 466 specimens. The fish length varied between 12.7 and 27.2 cm and the weight from 38.1 to 293.2 g. Samples were collected from the artisanal fisheries during the fishing season from August 2018 to July 2019. The relationship between the body lengths (total, fork and standard length in cm) and the body weight (g) was found to be significant (p < 0.05). The relationship between the body length and weight regarding the sex effect was insignificant for all samples (log W- log TL, ANCOVA, p > 0.05). The relationship between length and weight was estimated by a power regression function, with a...
Tipo: Text Palavras-chave: Age precision; Growth; Rhabdosargus haffara; Hurghada; Red Sea; Egypt stock assessment.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00623/73484/72774.pdf
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Ailadinium reticulatum gen. et sp. nov. (Dinophyceae), a New Thecate, Marine, Sand-Dwelling Dinoflagellate from the Northern Red Sea 5
Saburova, Maria; Chomerat, Nicolas.
A new photosynthetic, sand-dwelling marine dinoflagellate, Ailadinium reticulatum gen. et sp. nov., is described from the Jordanian coast in the Gulf of Aqaba, northern Red Sea, based on detailed morphological and molecular data. A. reticulatum is a large (53–61 μm long and 38–48 μm wide), dorsoventrally compressed species, with the epitheca smaller than the hypotheca. The theca of this new species is thick and peculiarly ornamented with round to polygonal depressions forming a foveate-reticulate thecal surface structure. The Kofoidian thecal tabulation is APC (Po, cp), 4′, 2a, 6′′, 6c, 4s, 6′′′, 1p, 1′′′′ or alternatively it can be interpreted as APC, 4′, 2a, 6′′, 6c, 4s, 6′′′, 2′′′′. The plate pattern of A. reticulatum is noticeably different from...
Tipo: Text Palavras-chave: Benthic dinoflagellates; Dinophyceae; Gulf of Aqaba; Jordan; LSU rDNA; Molecular phylogeny; Morphology; Red Sea; SSU rDNA; Taxonomy.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00226/33678/38183.pdf
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Assessing Changes in Fisheries Using Fishers&#8217; Knowledge to Generate Long Time Series of Catch Rates: a Case Study from the Red Sea 7
Tesfamichael, Dawit; Fisheries Centre, University of British Columbia; Department of Marine Science, University of Asmara; d.tesfamichael@fisheries.ubc.ca; Pitcher, Tony J.; Fisheries Centre, University of British Columbia; pitcher.t@gmail.com; Pauly, Daniel; Fisheries Centre, University of British Columbia; d.pauly@fisheries.ubc.ca.
The data requirements for most quantitative fishery assessment models are extensive, and most of the fisheries in the world lack time series of the required biological and socioeconomic data. Many innovative approaches have been developed to improve data collection for fisheries. We explored the use of data from fishers&#8217; interviews to estimate time series of approximate &#8220;best&#8221; catch rates. A total of 472 standardized interviews were conducted with 423 fishers along the southern Red Sea coast recording the best catch recalled and the change in average catch rates throughout the fishing career of interviewees. The results showed a decline of best catch rates in all fisheries, ranging from 4% to 10% per year for more than 50...
Tipo: Peer-Reviewed Reports Palavras-chave: Assessment; Catch rates; Fishers&#8217; Knowledge; Interview; Red Sea; Small-scale fishery; Time series.
Ano: 2014
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Asthenosoma marisrubri n.sp. (Echinodermata, Echinoidea) from the Red Sea 16
Weinberg, Steven; Ridder, Chantal de.
Indopacific echinoids of the genus Asthenosoma that have hitherto been described as A. varium actually belong to two distinct species that are geographically separated. Animals of the eastern population, extending from Sri Lanka to Hawaii and centered around the Indonesian Archipelago and the Philippines are A. varium Grube, 1868. The new species, A. marisrubri, is so far known only from the northern Red Sea. The two species can be clearly distinguished by the distribution and the nature of the aboral spines and by the lack of tridactylous pedicellariae with blunt massive valves in A. marisrubri n.sp.
Tipo: Article / Letter to the editor Palavras-chave: Echinodermata; Cchinoid; Asthenosoma; New species; Red Sea.
Ano: 1998 URL: http://www.repository.naturalis.nl/record/505055
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Cephalopods from the Netherlands Indian Ocean Programme (NIOP) (Expeditions 1992-1993) 16
Salcedo-Vargas, Mario Alejandro.
Cephalopods of the Red Sea, Gulf of Aden and the Western Indian ocean off Somalia are studied. A preliminary annotated list is presented. This study was based on the examination of 381 specimens captured with a Rectangular Midwater Trawl (RMT8) during three cruises of the Netherlands Indian Ocean Programme. The taxa identified represent: 22 families, 35 genera and 56 species. Two species new to science are found. Systematic position and taxonomic re-evaluation in the Chiroteuthidae, Mastigoteuthidae and Octopodidae is briefly discussed. The present collections represent a valuable contribution to the species composition from the Western Indian Ocean and to cephalopod juvenile morphology.
Tipo: Article / Letter to the editor Palavras-chave: Cephalopoda; Taxonomic list; Indian Ocean; Red Sea.
Ano: 1994 URL: http://www.repository.naturalis.nl/record/505359
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Cumacea (Crustacea) from the Red Sea and the Maldives (Indian Ocean) in the collection of the Zoological Museum, Hamburg, with the description of seven new species and a new genus 16
Muhlenhardt-Siegel, Ute.
Eleven species of the families Bodotriidae, Nannastacidae and Diastylidae from the Red Sea and Maldive Islands (Indian Ocean) were identified and partly redescribed. Six new species were described for the genera Eocuma, Iphinoe, Nannastacus, Schizotrema, Makrokylindrus and Dimorphostylis. A new genus, Bathycampylaspis, with one new species was established.
Tipo: Article / Letter to the editor Palavras-chave: Crustacea; Cumacea; New species; Red Sea; Indian Ocean.
Ano: 1996 URL: http://www.repository.naturalis.nl/record/504793
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Description and classification of dictyoceratid sponges from the Northern Red Sea 16
Helmy, Tamer; Serehy, Hamed el; Mohamed, Saad Zakaria; Soest, Rob W.M. van.
Seven dictyoceratid sponge species were collected from the Gulf of Aqaba, Northern Red Sea. Two new species were recognized: Scalarispongia aqabaensis n. sp. and Spongia lesleighae n. sp. Five others belong to the known species, Fascaplysinopsis reticulata (Hentschel, 1912), Phyllospongia papyracea (Esper, 1806), Hyattella tubaria (Lendenfeld, 1889), Spongia arabica (Keller, 1889) and Spongia irregularis (Lendenfeld, 1889). Hyattella tubaria, considered a synonym of H. intestinalis Lamarck, 1814) by Cook & Bergquist (2002) is demonstrated to be a valid species. Specimens are described and illustrated by photographs of preserved specimens and microphotographs of sections.
Tipo: Article / Letter to the editor Palavras-chave: Demospongiae; Dictyoceratida; Taxonomy; New species; Gulf of Aqaba; Red Sea.
Ano: 2004 URL: http://www.repository.naturalis.nl/record/505260
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Description d'Engyprosopon hureaui n. sp. (Pleuronectiformes, Bothidae) du golfe d'Akaba 5
Quero, Jean-claude; Golani, D.
In the catches made near Elat (Gulf of Aqaba), there were numerous small Bothid fishes of genus Engyprosopon described as a new species, E. hureaui. NOT CONTROLLED OCR
Tipo: Text Palavras-chave: New species; Taxonomy; Gulf of Aqaba; Red Sea; Engyprosopon hureaui; Bothidae.
Ano: 1990 URL: http://archimer.ifremer.fr/doc/1990/publication-3781.pdf
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Divergent Capacity of Scleractinian and Soft Corals to Assimilate and Transfer Diazotrophically Derived Nitrogen to the Reef Environment 5
Pupier, Chloe A.; Bednarz, Vanessa N.; Grover, Renaud; Fine, Maoz; Maguer, Jean-francois; Ferrier-pages, Christine.
Corals are associated with dinitrogen (N-2)-fixing bacteria that potentially represent an additional nitrogen (N) source for the coral holobiont in oligotrophic reef environments. Nevertheless, the few studies investigating the assimilation of diazotrophically derived nitrogen (DDN) by tropical corals are limited to a single scleractinian species (i.e., Stylophora pistillata). The present study quantified DDN assimilation rates in four scleractinian and three soft coral species from the shallow waters of the oligotrophic Northern Red Sea using the N-15(2) tracer technique. All scleractinian species significantly stimulated N, fixation in the coral-surrounding seawater (and mucus) and assimilated DDN into their tissue. Interestingly, N-2 fixation was not...
Tipo: Text Palavras-chave: Dinitrogen fixation; Diazotrophs; Scleractinian corals; Soft corals; Red Sea.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00512/62370/66644.pdf
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Importance of the Gulf of Aqaba for the formation of bottom water in the Red Sea 5
Plahn, O; Baschek, B; Badewien, Th; Walter, M; Rhein, M.
[1] Conductivity-temperature-depth tracer and direct current measurements collected in the northern Red Sea in February and March 1999 are used to study the formation of deep and bottom water in that region. Historical data showed that open ocean convection in the Red Sea can contribute to the renewal of intermediate or deep water but cannot ventilate the bottom water. The observations in 1999 showed no evidence for open ocean convection in the Red Sea during the winter 1998/1999. The overflow water from the Gulf of Aqaba was found to be the densest water mass in the northern Red Sea. An anomaly of the chlorofluorocarbon component CFC-12 observed in the Gulf of Aqaba and at the bottom of the Red Sea suggests a strong contribution of this water mass to the...
Tipo: Text Palavras-chave: Gulf of Aqaba; Red Sea; Formation of bottom water; Tracer oceanography; CFC; Overflow.
Ano: 2002 URL: https://archimer.ifremer.fr/doc/00223/33445/31826.pdf
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Sea level variability in the central Red Sea 5
Sultan, Sar; Ahmad, F; Elghribi, Nm.
Analyses of the daily means of the sea level at Jeddah and Port Sudan for the year 1991 reveal that a large proportion (60%) of the energy is concentrated in the seasonal variations. The seasonal signal is approximated as the sum of an annual and semi-annual components. The amplitudes of the annual component are 20.3 and 12.7 cm respective! y and constitute about 44% of the total variance. The amplitudes of the semi-annual cycle are 9.6 cm and 7.7 cm and explain about 10% and 16% of the variance respcctively. At Jeddah cross-spectral anal ysis between the sea-level and the wind stress components shows that the annual cycle is mainly induced by the long-shore component. In contrast no correlation exists between the sea leve! and the cross-shore wind-stress...
Tipo: Text Palavras-chave: Niveau de la mer; Tension du vent; Analyse spectrale; Mer Rouge; Sea leve; Wind stress; Spectral analysis; Red Sea.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/00096/20766/18392.pdf
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The Lioconcha castrensis species group (Bivalvia : Veneridae), with the description of two new species 16
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 & 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
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Xeniidae (Cnidaria: Octocorallia) from the Red Sea, with the description of a new species 16
Benayahu, Y..
Xenia verseveldti, a new species of the Xeniidae is described, based upon material from the coral reefs of the Sinai peninsula, Red Sea. Two other, closely related Xenia species are commented upon. The structure of Xenia sclerites is presented by scanning electron microscopy, indicating a unique structure of corpuscular aggregations. A systematic list of all Xeniidae recorded from the Red Sea, along with some new records, is presented.
Tipo: Article / Letter to the editor Palavras-chave: Cnidaria; Octocorallia; Xeniidae; New species; Red Sea; Sinai; 42.72.
Ano: 1990 URL: http://www.repository.naturalis.nl/record/318356
Registros recuperados: 15
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