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Updating Geographic Distribution of Artemia urmiana GÜNTHER, 1890 (Branchiopoda: Anostraca) in Europe: An Integrated and Interdisciplinary Approach IBSS Repository
Abatzopoulos, Th. J.; Amat, F.; Baxevanis, A. D.; Belmonte, G.; Hontoria, F.; Maniatsi, S.; Moscatello, S.; Mura, G.; Shadrin, N. V..
Artemia urmiana (a species previously considered endemic of Lake Urmia, NW Iran) has been found in Lake Koyashskoe, a hypersaline lake on the Black Sea coast of the Crimean peninsula (Ukraine). Therefore, this is the first record of A. urmiana in Europe which updates its distribution. The species identification was based on an integrated and interdisciplinary approach using discriminant analysis of the morphometric characters, scanning electron microscopy, and molecular profile analysis. The data derived from the above mentioned approaches converge to significant similarity of the population under investigation with A. urmiana. The updated geographic distribution of the species, deriving from the present report, asks for additional contribution of other...
Tipo: Journal Contribution Palavras-chave: Salt lakes; Scanning electron microscopy; Discriminant analysis; Molecular analysis; Biogeography.
Ano: 2009 URL: http://repository.ibss.org.ua/dspace/handle/99011/1069
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Effect of ecological and biological factors on the uptake and concentration of trace elements by aquatic organisms at Edku lake OceanDocs
Abbas, M.M.; Shakweer, L..
The effect of temperature, pH and trace elements concentration in the ambient water on the uptake and accumulation of Cu, Zn, Ni and Pb in various organs of fish and parts of aquatic plants of Edku Lake were studied. It was found that higher water temperature and lower pH during summer increased the rates of trace metals uptake by the most common fish species Oreochromis niloticus. The concentrations of Cu, Zn, and Ni in the various organs of fish were affected by the concentrations of these elements in the water. Cu, Zn, Ni and Pb attained higher concentrations in the roots of Eichormia crassipes if compared with their concentrations in the other parts of this aquatic plant. Sex of fish can be considered as an important factor affecting the accumulation...
Tipo: Journal Contribution Palavras-chave: Trace elements; Fish; Aquatic plants; Pollution Accumulation Environments Lake fisheries Lakes Lake fisheries Lakes Environment http://aims.fao.org/aos/agrovoc/c_4159 http://aims.fao.org/aos/agrovoc/c_4160 http://aims.fao.org/aos/agrovoc/c_2593.
Ano: 2005 URL: http://hdl.handle.net/1834/1249
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Kinetic and isotherm studies of copper (II) removal from wastewater using various adsorbents OceanDocs
Abdel Wahab, O..
The present investigation deals with the utilization of marine green algae (GA), Ulva lactuca, and an activated carbon prepared from green algae (CGA) as adsorbents for the removal of copper from wastewater. A series of experiments were conducted in a batch system to evaluate the effect of system variables. The effect of pH, initial copper concentration, dose of adsorbents were considered. The optimal pH value of copper (II) adsorption onto GA and CGA was found to be pH 5.0. The maximum uptake capacities were 24.5 and 32.3 mg copper (II) per gram of GA and CGA, respectively. The efficiency of removal was slightly changed by replacing an aqueous solution by saline water or wastewater containing the same copper concentration. Adsorption kinetic data were...
Tipo: Journal Contribution Palavras-chave: Laboratory Study; Adsorption; Kinetics; Isotherms; Waste water; Adsorption; Http://aims.fao.org/aos/agrovoc/c_137.
Ano: 2007 URL: http://hdl.handle.net/1834/1910
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Short term variations of zoo plankton community in the West Naubaria Canal, Alexandria, Egypt OceanDocs
Abdel-Aziz, N.E..
The variations of zooplankton structure and abundance were studied at short time intervals in the northern part of the West Naubaria Canal, near the sea side, based on weekly sampling from May 2002 to May 2003 .The community represented high species richness (120 species), and relatively low population density ( annual average 31340 organisms/m.3). Freshwater forms were the major representatives (68 species) of the community, including the sea side station. However, several marine species were reported inside the canal at a long distance from the sea. The community structure showed wide weekly variations (4-29 species), while between stations the differences were small. Relative to salinity in the canal, diversity index sustained the highest value (annual...
Tipo: Journal Contribution Palavras-chave: Naubaria Canal; Salinity; Zooplankton; Zooplankton; Salinity; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_6751.
Ano: 2005 URL: http://hdl.handle.net/1834/1300
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Vertical migration of zooplankton groups in an Eutrophic bay, Dekhaila harbor, Alexandria, Egypt OceanDocs
Abdel-Aziz, N.E..
Diel vertical migration of different zooplankton groups in Dekhaila Harbor was studied monthly from May 2003 to April 2004. Generally, more groups were found in the surface layer (0-10 m.) than the deeper one (10-20 m.). Some zooplankton groups undergo significant vertical migration at certain time of the year, others showed no clear differences in distribution patterns and exhibited no directed movement patterns. Some species stayed a part of the day within certain layer of the water column, others were randomly dispersed in the whole water column during different hours. Responses appear to depend also on the life stages of each zooplankton group, as well as other ecological conditions such as temperature, light and amount of food. Population budget...
Tipo: Journal Contribution Palavras-chave: Hydrobiology Studies; Zooplankton; Vertical migrations; Ecology; Zooplankton; Http://aims.fao.org/aos/agrovoc/c_15490.
Ano: 2006 URL: http://hdl.handle.net/1834/1455
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environmental assessment on the aqaba gulf coastal waters, egypt OceanDocs
Abdel-Halim, A.M.; Aboel-Khair, E.M.; Fahmy, M.A.; Shridah, M.A..
Environmental Information and Monitoring Programme (EIMP) for the Egyptian coastal waters of Aqaba Gulf was established to initial monitoring and data base system by applying quality control assessments in order to evaluate, protect and sustainable use of coastal regions. Within the framework of this programme six bimonthly field campaigns were carried out annually during 1998 – 2004. A total of 11 coastal stations were selected to cover different locations of the Gulf. The surface distribution patterns of hydrographical parameters (water temperature, salinity, dissolved oxygen and pH) as well as chlorophyll-a, total suspended matter, transparency, nitrogen and phosphorus forms and reactive silicate were investigated. The obtained data of seven years work...
Tipo: Journal Contribution Palavras-chave: Environmental Field Study; Coastal waters; Hydrographic data; Environmental assessment; Coastal waters.
Ano: 2007 URL: http://hdl.handle.net/1834/1911
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Spatial variation of phytoplankton and some physico-chemical variables during the highest flood season in Lake Nasser (Egypt) OceanDocs
Abdel-Halim, A.M.; Gharib, S.M..
Species composition, abundance, and phytoplankton biomass in Lake Nasser were studied during the highest flood season in autumn 1999, and were supported by some physico-chemical environmental parameters. The nutrient salts levels were low to medium, with ranges of 0.96-9.92 g/L for nitrite, 20.14-72.14 g/L for ammonia, complete depletion -27.69 g/L for phosphate, and 5.83-9.00 g/L for silicate. A total of 71 taxa were identified, of which 46% were chlorophytes, 26% bacillariophytes and 22% cyanophytes. Phytoplankton abundance and biomass values were higher in the northern stations than in the southern, but were lower than previously reported, indicating approaching from oligomesotrophic status, with,respectively, means of 108.9 x 104 unit/L and 1.18...
Tipo: Journal Contribution Palavras-chave: Environmental Studies; Phytoplankton; Phytoplankton; Http://aims.fao.org/aos/agrovoc/c_13344.
Ano: 2006 URL: http://hdl.handle.net/1834/1454
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Analyse de la biodiversité et de la production ichtyques dans trois lacs nord Africains : Merja Zerga (Maroc), Garâat Ichkeul (Tunisie) et lac Edku (Egypte) OceanDocs
Abdelzaher, H.M.A.; Ramdani, M.; Flower, R.; Kraiem, M.M.; Fathi, A.A..
This survey first presents an inventory of fish species in the three studied sites. Altogether 17 fish species were found in Merja Zerga (Morocco), 25 species in Garâat Ichkeul and 16 species in Edku lagoon. Three fish groups live in these brackish lakes : sedentary fish, marine fish and freshwater fish. The second part of the study deals with the production of the different species. This production mainly rests upon Mugilidae and Anguilla in Merja Zerga and Ichkeul, while, in Edku, Tilapia is its principal component. In all these sites fish production seems to be decreasing these last years, because of over-fishing and essentially of the deterioration of the environmental factors, especially the hydrologic ones.
Tipo: Journal Contribution Palavras-chave: North Africa; Afrique du nord; Lagune Biodiversité Lagoon Biodiversity Lakes Fish Lakes Biodiversity Production http://aims.fao.org/aos/agrovoc/c_4160 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_6200.
Ano: 2003 URL: http://hdl.handle.net/1834/1071
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Assessment of some heavy metals, major cations and organic matter in the recent sediments of Bardawil Lagoon, Egypt OceanDocs
Abdo, M.H..
The aim of the present study is to gather detailed information on the distribution and concentration levels of some heavy metals (Fe, Mn, Zn, Cu, Pb & Cd), major cations (Ca,Mg, Na & K), in addition to organic matter in the Bardawil lagoon sediments during four successive seasons during (2001-2002). The different metals concentrations could be arranged in descending order as follows: - Ca> Na> Fe> Mg> K> Mn> Cu> Zn> Pb> Cd.
Tipo: Journal Contribution Palavras-chave: Sediments; Egypt; Bardawil Lake Abiotic factors Heavy metals.
Ano: 2005 URL: http://hdl.handle.net/1834/1299
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Some comparative histological studies on alimentary tract of Tilapia Fish (Tilapia spilurus) and Sea Bream (Mylio cuvieri) OceanDocs
Abdulhadi, H.A..
The present work was carried out on ten mature Tilapia (Tilapia spilurus) and ten mature Bream fish (Mylio cuvieri) and the specimens were processed for histological studies. The oesophagus of Bream fish is characterized by the presence of numerous mucous cells which react positively to P.A.S. and alcian blue. While oesophagus of Tilapia is completely filled with mucous cells that react positively to P.A.S. only. The stomach of Bream consists of one part while that of Tilapia consists of two parts (cardiac and pyloric). The mucosa of stomach of both types of fish reacted positively to P.A.S. the pyloric caeci of Bream fish showed numerous mucous cells that react positively to Alsain blue. The small intestine of bream has thicker tunica muscularis than that...
Tipo: Journal Contribution Palavras-chave: Fishery biology; Fishery biology; Http://aims.fao.org/aos/agrovoc/c_2937.
Ano: 2005 URL: http://hdl.handle.net/1834/1085
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Morphologie et hydrodynamique a l'embouchure du fleuve Bandama OceanDocs
Abe, J.; Bakayoko, S.; Bamba, S.B.; Koffi, K.P..
Cette étude présente la morphologie récente de l'embouchure du fleuve Bandama à Grand-Lahou. A l'interface eau/sédiment apparaissent des chenaux et des hauts fonds tapissés respectivement par des sables fins à très fins et des sables moyens. Les levés périodiques des contours de la passe effectués jusqu'en 1993 , indiquent une migration significative de l'embouchure vers l'Ouest avec une vitesse de déplacement de l'ordre de 1,1 m/mois....
Tipo: Journal Contribution Palavras-chave: COASTAL MORPHOLOGY; SEDIMENTOLOGY; Hydrology; Hydrology; Http://aims.fao.org/aos/agrovoc/c_3731.
Ano: 1993 URL: http://hdl.handle.net/1834/1241
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Morphologie et hydrodynamique à l'embouchure du fleuve Bandama OceanDocs
Abé, Jacques; Bakayoko, S.; Bamba, S.B.; Koffi, K. P..
Cette étude présente la morphologie récente de l'embouchure du fleuve Bandama à Grand-Lahou. A l'interface eau/sédiment apparaissent des chenaux et des hauts fonds tapissés respectivement par des sables fins à très fins et des sables moyens. Les levés périodiques des contours de la passe effectués jusqu'en 1993 indiquent une migration significative de l'embouchure vers l'ouest avec une vitesse de déplacement de l'ordre de 1,1m/mois. Trois chenaux bien individualisés caractérisent la zone . Ce sont au sud-ouest le chenal lagunaire, à l'Est le chenal fluvial dont la profondeur atteint 8 mètres et au Nord le chenal de Lahou Kpanda. L'analyse hydrologique montre l'importance du flot à l'embouchure Ouest tandis que les masses d'eau du jusant empruntent...
Tipo: Journal Contribution Palavras-chave: Coastal landforms; Coastal inlets; River outflow.
Ano: 1993 URL: http://hdl.handle.net/1834/5700
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Toxicity of cadmium and copper and their effect on some biochemical parameters of marine fish mugil sheheli OceanDocs
Abou El-Naga, E.H.; El-Moselhy, K.M.; Hamed, M.A..
The present work aimed to estimate the toxicity of cadmium and copper to fingerlings of marine fish Mugil seheli, as well as the effect of different concentratios of Cd and Cu on some biochemical parameters (Aspartate and alanine transaminase enzymes, glucose, glycogen, lipid and protein) in the fish organs. 96-h LC50s of Cd and Cu were 5.36 and 1.64 ppm, respectively. Levels of aspartate and alanine transaminase were reduced within 2 days of exposure to different concentrations of Cd (2.0 and 0.5 ppm) and Cu (0.5 and 0.2 ppm) in both plasma and muscle tissue. Glucose was increased reaching the highest values after 4 days of the treatment with Cd and Cu, while muscle glycogen was increased at first days then dropped after 14 days below control level....
Tipo: Journal Contribution Palavras-chave: Toxicity; Cadmium; Copper; Aspartate and Alanine transaminases; Glucose; Glycogen; Lipid; Protein; Fish (Mugil seheli) Abiotic factors Accumulation Chemical analysis Marine fish.
Ano: 2005 URL: http://hdl.handle.net/1834/1296
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Mejoramiento de la floculación de cepas de levadura cervecera OceanDocs
Abreu, J.; González, J.; Rodríguez, Y..
Las cepas de levadura originales usadas en las cervecerías cubanas: Saccharomyces uvarum U-57, Saccharomyces uvarum Budvar y Saccharomyces cerevisiae F-26, se probaron en columnas EBC a 10 ºC durante 7 días, atendiendo a sus propiedades tecnológicas fundamentales: crecimiento, floculación, sedimentación, atenuación, producción de alcohol y eficiencia fermentativa. La floculación de las cepas se estudió a través de aislamientos celulares y valoración morfológica. Los cultivos de levaduras originales y aislados se evaluaron comparativamente en la fermentación, con relación a la capacidad de floculación, concentración de células en suspensión y demás propiedades. Las cepas de levaduras cerveceras originales y aisladas, S. uvarum U-57 y S. uvarum Budvar y...
Tipo: Journal Contribution Palavras-chave: Production (industrial); Appropriate technology; Flocculation.
Ano: 2008 URL: http://hdl.handle.net/1834/4891
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Anotaciones ecológicas y sistematicas sobre los peces de la familia Pomacentridae en el Caribe colombiano OceanDocs
Acero P., A..
Hasta el momento se han identificado catorce especies de peces de la familia Pomacentridae en el Caribe colombiano. Siete de ellas en el género Eupomacentrus, incluyendo E. dorsopunicans, E. planifrons, E. partitus, E. leucostictus, E. meliis, E. variabilis y la estuarina E. otophorus. Las dos especies de Abudefduf del Caribe son conocidas en Colombia, A. saxatilis y A. taurus. Microspathodon chrysurus es uno de los pomacentridus más abundantes en los arrecifes coralinos colombianos, destacándose los juveniles de esta especie, pues desarrollan un comportamiento especial, que se expresa picando los costados de los peces que solicitan limpieza, disturbándolos. Chronih posee cuatro especies conocidas en el área, C. cyanea y C. muliilftieafa, que habitan en...
Tipo: Journal Contribution Palavras-chave: Marine fish; Taxonomy; Taxonomy; Http://aims.fao.org/aos/agrovoc/c_7631.
Ano: 1978 URL: http://hdl.handle.net/1834/3935
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Comentarios preliminares sobre los clinidos (Teleostei: Perciformes: Clinidae) del Caribe colombiano OceanDocs
Acero P., A..
Se incluye un listado de las 26 especies de clinidos conocidas del Caribe colombiano, de las cuales Labrisomus sp., albigenys, L. bucciferus, Starksia atlántica, Acanthemblemaria rivasi, Coralliozetus sp., Ekemblemaria nigra, Emblemariopsis sp. y Enneanectes sp. son reportadas por primera vez de la costa norte de sudamerica. Malacoctenus macropus y Stathmonotus stahli (subespecie tekla) son nuevas para el Caribe colombiano. Se demuestra la riqueza de especies de esta familia en el sur del Caribe, pues existen 49, 14 de las cuales son exclusivas de esta zona. Esta distribución zoogeográfica restringida se manifiesta claramente en los chaenopsidos, pues la cuarta parte de sus especies caribeñas son conocidas solo del sur. Los géneros Ekemblemaria,...
Tipo: Journal Contribution Palavras-chave: Marine fisheries; Taxonomy; New records; Marine fisheries; Taxonomy; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_7631.
Ano: 1979 URL: http://hdl.handle.net/1834/3945
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Coexistencia de las dos especies de Cachorreta (Pisces: Auxis) en la Región de Santa Marta, Colombia OceanDocs
Acero, P.A.; Polanco F., A.; Garzón-Ferreira, J..
The marine environment of the Santa Marta region (Colombian Caribbean) is unique in many ways. The coexistence there of both species of Auxis is herewith reported and discussed. Auxis thazard, the frigate tuna or frigate mackerel, has been reported several times from Santa Marta; however, the occurrence of A. rochei, the bullet tuna or bullet mackerel, is reported for the first time. Some inter and intraspecific differences are discussed; fishery aspects are commented as well.
Tipo: Journal Contribution Palavras-chave: Fishery resources; New records; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_2942.
Ano: 2006 URL: http://hdl.handle.net/1834/1972
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The Chaenopsine blennies of the Southwestern Caribbean (Pisces: Clinidae: Chaenopsinae) I. Systematic analysis of zoogeography OceanDocs
Acero-P., A..
The chaenopsine blennies are an homogeneous group which may be considered a subfamily of the Clinidae, since the existing evidence is not enough to give them familial status. The subfamily includes eight genera: Mccoskerichthys, Coralliozetus, Acanthemblemaria, Ekemblemaria, Emblemaria, Hemiemblemaria, Lucayablennius, and Chaenopsis. The nominal genera Protemblemaria and Emblemariopsis are herewith considered synonyms of Coralliozetus, since they share two derived characters: small size and sexual dimorphism in the color of the head, and are rather similar in several other characteristics. The división of the West Indian Zoogeographical Province made by Briggs (1974) is unnatural, since the fish fauna of Belize, Florida and the Bahamas is very similar. I...
Tipo: Journal Contribution Palavras-chave: Fish; Ichthyology; Endemic species; Fish; Endemic species; Ichthyology; Http://aims.fao.org/aos/agrovoc/c_15903; Http://aims.fao.org/aos/agrovoc/c_26882; Http://aims.fao.org/aos/agrovoc/c_3788.
Ano: 1984 URL: http://hdl.handle.net/1834/4031
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Gobioides broussoneti Lacepede (Pisces: Gobiidae) en el Caribe colombiano OceanDocs
Acero-P., A.; Arenas-Granados, P..
Se registra la presencia del pe? Gobiidae Gobioides broussoneti en el área adyacente a la boca de la Ciénaga Grande de Santa Marta (Caribe colombiano). Se colectaron 29 especímenes, 28 de ellos Juveniles (48-51 mm) y el otro un macho maduro (553 mm); el contenido del tubo digestivo del adulto indica que la especie consume básicamente material detrítico vegetal, complementado con pequeños invertebrados.
Tipo: Journal Contribution Palavras-chave: Coastal lagoons; Estuaries; Stomach content; Estuaries; Coastal lagoons; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_1697.
Ano: 1990 URL: http://hdl.handle.net/1834/3891
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Identidad problemática del tiburón Martillo Ojichico (Carcharhiniformes: Sphyrna) existente en Colombia OceanDocs
Acero-P., A.; Cánter-Ríos, D.; Polanco-F., A..
The presence of Sphyrna tudes in Colombian waters is supported by a 506 mm total length male collected in the southernmost corner of the Caribbean Sea, the mouth of Atrato river. A short discussion on the confusing taxonomic and nomenclatural history of the smalleye hammerhead is included.
Tipo: Journal Contribution
Ano: 2007 URL: http://hdl.handle.net/1834/3480
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