DOCSLIB.ORG

Mediterranean Marine Science

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Mediterranean Marine Science Mediterranean Marine Science Vol. 12, 2011 Aliens in Egyptian Mediterranean waters. A check- list of Erythrean fish with new records HALIM Y. Department of Oceanography, Faculty of Science, Alexandria University RIZKALLA S. National Institute of Oceanography and Fisheries, Alexandria https://doi.org/10.12681/mms.46 Copyright © 2011 To cite this article: HALIM, Y., & RIZKALLA, S. (2011). Aliens in Egyptian Mediterranean waters. A check-list of Erythrean fish with new records. Mediterranean Marine Science, 12(2), 479-490. doi:https://doi.org/10.12681/mms.46 http://epublishing.ekt.gr | e-Publisher: EKT | Downloaded at 08/05/2021 22:23:14 | Mediterranean Marine Science Research Article Indexed in WoS (Web of Science, ISI Thomson) and SCOPUS The journal is available on line at http://www.medit-mar-sc.net Aliens in Egyptian Mediterranean waters. A check-list of Erythrean fish with new records Y. HALIM1 and S. RIZKALLA2 1 Department of Oceanography, Faculty of Science, Alexandria University 2 National Institute of Oceanography and Fisheries, Alexandria Corresponding author: [email protected] Received: 21 January 2011; Accepted: 5 October 2011; Published on line: 25 November 2011 Abstract The historical role of the Suez Canal as a pathway for migrations between the Red sea and the Mediterranean is recalled. A check-list of 42 immigrant Erythrean fish in Egyptian Mediterranean waters is given. The list comprises four new records. 17 of the immigrant species are commercially exploited, whereas 15 are known from single records. While the Erythrean fish as invasive species are beneficial to local fisheries, in our view, they do not have an important impact upon the ecosystem. Keywords: Suez Canal; Invasive species; Ecosystems; Impacts; Benefits; Biodiversity. Introduction MORCOS (1980) compared the water mass- es in the Canal in 1955 to the records made The biodiversity of the East Mediter- in 1871, two years after its opening and found ranean has been considerably altered since that salinity dropped from about 65 ppm to the opening of the Suez Canal in 1869. As about 45ppm. Nevertheless, the circulation a narrow and shallow water course, it stands pattern remained unchanged, the residual as a channel between two marine basins current tending to flow from the Red Sea to (GRUVEL, 1936). Its biological role how- the Mediterranean for ten months, revers- ever, is out of proportion to its size, although ing its flow in August-September. This pat- as a habitat and a pathway it remained long tern, added to their greater tolerance to high inhospitable to marine organisms. Two op- salinity, favours the northward migration of posite salinity barriers, the abnormally high Erythrean organisms. salinity of the Bitter Lakes, south, and the The process of immigration into and Nile dilution, north, stood on their way. With through the Canal remained incremental the continuous dissolution of the salt beds but slow, as documented by the early sur- in the Lakes and the cessation of the Nile veys of its ichthyofauna. Some ten years flood, both barriers became weaker. after its opening, KELLER (1882) found 12 Medit. Mar. Sci., 12/2, 2011, 479-490 479 http://epublishing.ekt.gr | e-Publisher: EKT | Downloaded at 08/05/2021 22:23:14 | fish species in the Canal and shortly after, Exotic fish species in the Mediterranean, KRUKENBERG (1888) recorded 15 species GOLANI et al. (2002) reported 59 exotic (for KRUKENBERG 1888 see NORMAN, species for an estimated Mediterranean to- 1927). TILLIER in 1902 published a de- tal of 650, which is almost 10% of the pop- tailed account of the ichthyofauna of the ulation. The rate of fish invasion has con- Canal based on a survey extending over sev- tinued unabated since 2002 (GOLANI et al., eral years. He recorded 80 species of which 2002). By 2007, 18 new alien fish species have about 40 occurred in the Canal, the others been recorded and many have extended their presumably venturing in and out. area of distribution (GOLANI et al., 2007). NORMAN (1927), working on the col- By 2010, their number in the updated CIESM lection made by the Cambridge Expedi- check list (GOLANI et al., 2010) had reached tion to the Suez Canal in 1924, reported 23. A further 17 alien species recorded in the occurrence of 45 fish species, 24 orig- 2009 figure on the list but with no indication inated from the Red Sea and 21 from the about biogeographic affinity. The check list Mediterranean. From his records and from of ZENETOS et al. (2010) comprises 92 alien more recent observations, it appears that species of Indo-Pacific origin in the East 13 of the Red Sea species had already es- Mediterranean. tablished viable populations in the Mediter- As to Egyptian waters, the check list ranean . On the other hand, five the Mediter- of EL SAYED (1994) included 31 Erythre- ranean species such as Engraulis encrassi- an fish species out of a total of 257. After cholus (Linnaeus, 1758), Hippocampus bre- EL SAYED (1994) and taking into account virostris (Schinz, 1822), Serranus cabrilla earlier records (NORMAN, 1927; MILLER (Linnaeus, 1785), Gobius ocheticus (Nor- & FOUDA, 1986) and more recent ones man, 1926) and Epinephelus aeneus (Ge- (RIZKALLA, 1997; ALLAM et al., 1999; offroy Saint-Hilaire, 1817), succeeded in GAMEE, 2005), Erythrean fish accounted crossing the Bitter Lakes establishing in for 38 species. Two species reported from the Gulf of Suez. Egyptian waters by TORTONESE (1951), The important changes that took place Glaucostegus halavi (Forsska l, 1775) and in the Levantine basin following the com- Carcharhinus melanopterus (Quoy & Gaimard, pletion of the High Aswan Dam in 1965-67 1824) have been omitted as their occurrence have created more favourable conditions for has not been confirmed. the settlement and spread of Erythrean fish The present work adds four new records and invertebrates in the Mediterranean basin of Erythrean fishes being present along the (HALIM et al., 1995; HALIM, 2004). In- Mediterranean Egyptian coasts, bringing the stead of reaching a plateau as POR (1978) list to a total of 42 species. Information on assumed, the process appears to be accel- their contribution to fishery is also given. erating. Later, POR himself reviewed his earli- Material and Methods er statement (POR, 1990). TORTONESE (1964) estimated the Indo-Pacific immigrant The present check-list of Erythrean fish fish species to be about 30 for a Mediter- species in Egyptian waters combines dis- ranean total of about 550. BEN-TUVIA persed records reported by several authors (1985) listed 41 species including the records over the years but it also includes recent, un- of MOUNEIMNE (1977). In their Atlas of published records made by the second au- 480 Medit. Mar. Sci., 12/2, 2011, 479-490 http://epublishing.ekt.gr | e-Publisher: EKT | Downloaded at 08/05/2021 22:23:14 | thor (S. RIZKALLA). Species are sorted phus far, and seven carnivores or omnivores, according to the observed abundance and namely, Etrumeus teres, Fistularia commer- the frequency of appearance in the fish mar- soni, Sphyraena chrysotaenia, Sphyraena flav- ket. Species which have established successful icauda, Parexocoetus mento, Scomberomorus viable populations are grouped under “A” commerson and Tylosurus choram and “B”. Species under A are of commer- As a rule, the new-comers to the Mediter- cial value and appear on the fish market, ranean tended to extend east rather than with the exception of the toxic Lagocephalus west from the Canal in the pre-High Dam sceleratus. “Single record” species are put times, a trend which is expected to change. under “C” since the frequency of the pres- Nevertheless, some Red Sea immigrants are ence in the fish market tends to be a func- now common hundreds of kilometres west tion of their economic value. The less valu- of Alexandria. This is the case with L. scel- able species are frequently overlooked, though eratus and F. commersonii (unpublished some might be fairly common. On the other records). On the other hand, some Erythrean hand the three groups should not to be con- fish proved to be highly euryhaline, tolerant sidered as rigid categories. Some species to a wide salinity range being able to pene- from group B such Fistularia commersonii trate the low brackish Delta lakes as well as and Hemiramphus far are on their way to de- the hypersaline Bardawil lagoon (Table 2, velop growing populations and will soon Fig. 1). need to be included under A. Three species Sebastapistes nuchalis (Günther, 1874), (Herklotsichthys punctatus, Siganus luridus which was excluded from the checklist of and Callionymus filamentosus) have been GOLANI et al. (2002) on the grounds that placed under category “A” following the sur- its single record in Cyprus was based on a vey of AKEL (2005) in Abu Qir bay. Two misidentification, is now included again in species namely Glaucostegus halavi (Forsska l, the list of alien Mediterranean species from 1775) and Carcharinus melanopterus reported a single record of EL SAYED, 1994. from Egyptian waters by TORTONESE New records. Four new Indo-Pacific (1951) have been omitted from the check species were encountered in samples col- list as their occurrence in Egyptian waters lected by the second author (S.R.) from has not been confirmed. trawlers, beach-seiners and purse-seiners Nomenclature follows the World Regis- from 2001 to 2009. Their description agrees ter of Marine Species (APPELTANS et al, with GOLANI et al. (2010). 2011). Family Fistularidae (Cornetfishes) Results Fistularia commersonii Rüppell, 1835 (Fig. 2). The Erythrean fish species recorded A relatively large number of specimens from Egyptian Mediterranean waters until (48-103 cm in total length) were caught in 2010 are given on Table 1. Apart from nine 2001 by trawlers west of Alexandria. The species, all of them are demersal, feeding species is so far absent from the eastern zone.
Load more

Recommended publications
  • Submergence and Burial of Ancient Coastal Sites on The
    Méditerranée N° 1.2 - 2005 65 Submergence and burial of ancient coastal sites on the subsiding Nile delta margin, Egypt Submersion des sites littoraux le long de la marge deltaïque subsidente du Nil, Égypte Jean-Daniel STANLEY* Abstract – Ancient sites originally positioned along the Nile Résumé - Les anciens sites archéologiques localisés le long du delta’s coastal margin are used as gauges to measure effects of littoral du delta du Nil sont utilisés comme indicateurs des «eustatic» sea-level rise (~1 mm/year) and land lowering variations relatives du niveau de la mer. L'effet combiné d'une (= subsidence) of the sediment substrate beneath settlements montée d'origine «eustatique», estimée à environ 1 mm/an, et de during the late Holocene. The combined effect of these two la subsidence aboutit à l'immersion et/ou à l'enfouissement de la factors, referred to as relative sea-level change, resulted in majorité des sites archéologiques. Au nord-ouest du delta, nous submergence and/or burial of the base of most sites along the avons retrouvé des vestiges archéologiques entre 5 et 7 mètres de delta at variable rates exceeding 1 mm/year. Based on these profondeur dans la baie d'Abu Kir. La vitesse de mobilité relative factors, submergence of sites to depths of 5-7 m is recorded in dépasse donc 1 mm/an. Au nord-est du delta, cette vitesse peut Abu Qir Bay off the NW delta; higher values (lowering to aller jusqu'à 5 mm/an. Elle est liée à des variations structurales 5 mm/year) are recorded along the NE corner of the delta.
    [Show full text]
  • Geostrophic Current Patterns Off the Egyptian Mediterranean Coast
    Geostrophic current OCEANOLOGIA, 52 (2), 2010. patterns off the Egyptian pp. 299–310. C 2010, by Institute of Mediterranean coast Oceanology PAS. KEYWORDS Egypt Mediterranean Geostrophic current circulation Mohamed Salama Kamel National Institute of Oceanography and Fisheries, Kayt-Bay, Alexandria, Egypt; e-mail: [email protected] Received 4 January 2010, revised 7 May 2010, accepted 13 May 2010. Abstract Using objectively analysed hydrographic data, currents have been calculated off the Egyptian Mediterranean coast at the surface and at 30, 50, 75, 100, 200 and 300 m depths for the four seasons. The surface circulation is dominated by an anticyclonic circulation off Salum Bay in winter, spring and summer. In nearshore areas, the current flows eastwards at the shallower levels but westwards at the deeper levels. Off the Nile Delta, the current is almost eastward with a higher velocity in summer and autumn, while in spring it is very weak. Off the area between Port Said and Rafah, there is a clear cyclonic circulation appearing in all seasons except winter. At 50 and 75 m depth, the velocity of the circulation is weak. At 100 m depth, the circulation that appeared between Matruh and Alamen in summer decreases in area and magnitude at the former depths. At 200 and 300 m in winter, the current velocity is quite low. In spring the current flows southwards off the area between Rafah and Port Said. In summer, the current off the area between Port Said and Rafah is quite strong and flows to the south. The situation in autumn is quite similar to that in summer, except in the eastern area, where the current is a westward one.
    [Show full text]
  • Semih ENGIN 1* and Kadir SEYHAN 2
    ACTA ICHTHYOLOGICA ET PISCATORIA (2009) 39 (2): 111–118 DOI: 10.3750/AIP2009.39.2.05 BIOLOGICAL CHARACTERISTICS OF ROCK GOBY, GOBIUS PAGANELLUS (ACTINOPTERYGII: PERCIFORMES: GOBIIDAE) , IN THE SOUTH-EASTERN BLACK SEA Semih ENGIN 1* and Kadir SEYHAN 2 1 Rize University, Faculty of Fisheries, 53100, Rize, Turkey 2 Karadeniz Technical University, Faculty of Marine Sciences, Trabzon, Turkey Engin S., Seyhan K. 2009. Biological characteristics of rock goby, Gobius paganellus (Actinopterygii: Perciformes: Gobiidae), in the south-eastern Black Sea. Acta Ichthyol. Piscat. 39 (2): 111–118. Background. Gobius paganellus L. is one of the most common gobiid fish in the south-eastern Black Sea. The aim of present study is to provide information on age structure and growth, length at sexual maturity, annual cycle of gonad development, and diet of rock goby in the south-eastern Black Sea. Materials and Methods. One hundred seventy-five specimens of G. paganellus were sampled from two stations in the province of Rize, south-eastern Black Sea. Samplings were performed by free diving using spear gun and hand net at night time. Specimens were dissected and sagittal otoliths, stomachs, livers, and gonads were removed. Otoliths were cleaned, immersed in glycerol, and examined on black background using reflected light at low magnification to determine age. Mean size at sexual maturity (L 50 ) (i.e., size at which 50% of fish are mature) was estimated for males and females by fitting the logistic Gompertz function to the proportion of mature fish per cm size-class. The gonadosomatic index, seminal vesicle somatic index, and hepatosomatic index were calculated on monthly basis.
    [Show full text]
  • Download Date 28/09/2021 10:57:38
    Stock Assessment and Management of Dilplodus: Speciee in Abu Qir Bay, Alexadria, Egypt Item Type Theses and Dissertations Authors Adam, Adel Mohamed Saleh Download date 28/09/2021 10:57:38 Item License http://creativecommons.org/licenses/by-nc/3.0/ Link to Item http://hdl.handle.net/1834/5091 STOCK ASSESSMENT AND MANAGEMENT OF DIPLODUS SPECIES IN ABU QIR BAY, ALEXANDRIA, EGYPT A Thesis Presented to the Graduate School Faculty of Sciences, Alexandria University In Partial fulfilment of the Requirements for the Degree of Master of Science In Biological Oceanography (Fish Biology and fisheries) By Adel Mohamed Saleh Adam March, 2010 Presented by Adel Mohamed Saleh Adam For the Degree of Master of Science In Biological Oceanography (Fish Biology and Fisheries) ByByBy STOCK ASSESSMENT AND MANAGEMENT OF DIPLODUS SPECIES IN ABU QIR BAY, ALEXANDRIA, EGYPT Examiners’ Committee: Approved Prof. Dr. .................................. .......................... Prof. Dr. ................................... ............................. Prof. Dr. .................................... ............................ Advisors’ Committee : Prof. Dr. Altaf A. Ezzat Professor of Fish Biology and Fisheries, Oceanography Department, Faculty of Science, Alexandria University Dr. Amany M. Osman Ass. Professor of Fish Biology and Fisheries, Oceanography Department, Faculty of Science, Alexandria University Dr. Hatem H. Mahmoud Researcher of Fisheries Biology and Fisheries, Fishery Division, National Institute of Oceanography& Fisheries, Alexandria ACKNOWLEDGMENT I am thankful for the mercy of God, who gave me the power and skill and was behind all the facilities i got for completing the present work. I would like to express my deep thanks and sincere gratitude to Prof. Dr. Altaf Ezzat for her planning of this work, generous supervision, professional guidance, encouragement and for critically reading and reviewing the manuscript as well as discussion of various parts in the present work.
    [Show full text]
  • Egypt State of Environment Report 2008
    Egypt State of Environment Report Egypt State of Environment Report 2008 1 Egypt State of Environment Report 2 Egypt State of Environment Report Acknowledgment I would like to extend my thanks and appreciation to all who contributed in producing this report whether from the Ministry,s staff, other ministries, institutions or experts who contributed to the preparation of various parts of this report as well as their distinguished efforts to finalize it. Particular thanks go to Prof. Dr Mustafa Kamal Tolba, president of the International Center for Environment and Development; Whom EEAA Board of Directors is honored with his membership; as well as for his valuable recommendations and supervision in the development of this report . May God be our Guide,,, Minister of State for Environmental Affairs Eng. Maged George Elias 7 Egypt State of Environment Report 8 Egypt State of Environment Report Foreword It gives me great pleasure to foreword State of Environment Report -2008 of the Arab Republic of Egypt, which is issued for the fifth year successively as a significant step of the political environmental commitment of Government of Egypt “GoE”. This comes in the framework of law no.4 /1994 on Environment and its amendment law no.9/2009, which stipulates in its Chapter Two on developing an annual State of Environment Report to be submitted to the president of the Republic and the Cabinet with a copy lodged in the People’s Assembly ; as well as keenness of Egypt’s political leadership to integrate environmental dimension in all fields to achieve sustainable development , which springs from its belief that protecting the environment has become a necessary requirement to protect People’s health and increased production through the optimum utilization of resources .
    [Show full text]
  • Characteristics of the Relative Sea Level in Abu-Qir Bay, Alexandria, Egypt
    JKAU: Mar. Sci., Vol. 29 No. 1 pp: 21-36 (1441 A.H. 2019 /A.D ) DOI :10.4197/Mar.29-1.2 Characteristics of the Relative Sea Level in Abu-Qir Bay, Alexandria, Egypt Mohammed Ahmed Said, Tariq EL-Gesiry, Zainab Morsi National Institute of Oceanography and Fisheries Abstract. hourly water level variations at Abu-Qir Bay were studied over 21 years. The levels were highly seasonal with a mean of 0.47m, and a rising rate of 6mm/yr. Tides are of semidiurnal type and of low amplitudes. No extreme sea level year was detected. Statistical analysis of surge heights was obtained. The estimation of flooding risks was determined. The design risk factor and return values of important water levels were calculated. An empirical relationship for the different water levels frequency of occurrence stated that the high water level of 3m might be exceeded once in 100 years. Keywords: Relative sea level, Abu-Qir Bay, Astronomical tides, Surges, Return periods, Flooding risk Introduction environmental pressures. Egypt’s The sea level variations along the Egyptian Mediterranean coast and the Nile Delta have Mediterranean coast have been the core of been identified as highly vulnerable to climate many researches, e.g. Moursy, 1989; Moursy, change induced SLR (UNDP, 2014). Dasgupta 1992; Moursy, 1993; Moursy, 1994; Moursy, et al. (2009) ranked Egypt in the top ten most 1998; Tayel, 2008; Hussein et al., 2010; Saad impacted countries (out of 84 developing et al., 2011; El-Geziry and Radwan, 2012; coastal countries considered world-wide) for Maiyza and El-Geziry, 2012; Said et al., 2012; population potentially displaced due to a 1m Radwan and El-Geziry, 2013; El-Geziry, SLR.
    [Show full text]
  • Fisheries Centre
    Fisheries Centre The University of British Columbia Working Paper Series Working Paper #2015 - 85 Reconstruction of marine fisheries statistics in the Egyptian Mediterranean Sea, 1950-2010 Hatem H Mahmoud, Lydia Teh, Myriam Khalfallah and Daniel Pauly anafy Year: 2015 Email: [email protected] This working paper is made available by the Fisheries Centre, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada. Reconstruction of marine fisheries statistics in the Egyptian Mediterranean Sea, 1950-2010 Hatem Hanafy Mahmoud1, Lydia Teh2, Myriam Khalfallah2, Daniel Pauly2 1 College of Fisheries Technology & Aquaculture, Arab Academy for Science, Technology & Maritime Transport 2 Sea Around Us, Fisheries Centre, University of British Columbia, 2202 Main Mall, Vancouver, BC, V6T 1Z4, Canada Corresponding author: [email protected] ABSTRACT We reconstruct marine fisheries catches for Egypt in the Mediterranean from 1950-2010 to account for catches that are omitted from official statistics. Annual landings statistics reported by the FAO under-estimate actual catches from Egypt’s industrial and small-scale fisheries, while catches from recreational fishing and discarded fish are absent. This reconstruction quantifies unreported and under-reported catch from Egypt’s Exclusive Economic Zone in the Mediterranean. Reconstructed total catch was 3.7 million t from 1950-2010, which is 1.9 times the 1.97 million t reported by FAO on behalf of Egypt for the same time period. The industrial sector accounted for 83% of under-reported catch. While the magnitude of under-reported catch has decreased steadily since the 1990s, there remains much uncertainty over how much fish is taken from Egypt’s Mediterranean waters.
    [Show full text]
  • Towards Integrated Management of Alexandria's Coastal Heritage
    TowardsTowards integratedintegrated managementmanagement ofof Alexandria’sAlexandria’s coastalcoastal heritageheritage Coastal region and small island papers 14 MEDITERRANEAN SEA Ras El Tin Anfoushy Bay Qait Bey Fort Abu Bakar Palace rock Pharos Island Western Harbour Eastern Harbour Cape Lochias El-Silsilah Al Raml Station Bibliotheca Alexandrina Roman Theatre at Kom El-Dekkah l a n Ca ia d Alexandria u The Cornish o m h a Scale 1:800 M Turner M. by drawn Map Coastal region and small island papers 14 Towards integrated management of Alexandria’s coastal heritage by Selim Morcos, Nils Tongring,Youssef Halim, Mostafa El-Abbadi and Hassan Awad a joint endeavour of the UNIVERSITY OF ALEXANDRIA,SUPREME COUNCIL OF ANTIQUITIES (EGYPT) GOVERNORATE OF ALEXANDRIA AND UNESCO The designations employed and the presentation of the material in this document do not imply the expression of any opinion whatsoever on the part of the UNESCO Secretariat concerning the legal status of any country, territory, city or area or of their authorities, or concerning the delimitation of their frontiers or boundaries. Reproduction is authorized, providing that appropriate mention is made of the source, and copies sent to the UNESCO (Paris) address below. This document should be cited as: UNESCO, 2003. Towards integrated management of Alexandria’s coastal heritage. Coastal region and small island papers 14, UNESCO, Paris, 79 pp. The digital version of this publication can be viewed at: http://www.unesco.org/csi/pub/papers2/alex.htm Within the limits of stocks available, extra copies of this document can be obtained, free of charge, from: UNESCO Cairo Office, UNESCO Venice Office, 8 Abdul-Rahman Fahmy Street, Palazzo Zorzi, Garden City, 4930 Castello, Cairo 11511, Egypt.
    [Show full text]
  • Field Identification Guide to the Living Marine Resources of the Eastern
    Abdallah, M. 2002. Length-weight relationship of fishes caught by trawl off Alexandria, Egypt. Naga ICLARM Q. 25(1):19–20. Abdul Malak, D., Livingstone, S., Pollard, D., Polidoro, B., Cuttelod, A., Bariche, M., Bilecenoglu, M., Carpenter, K., Collette, B., Francour, P., Goren, M., Kara, M., Massutí, E., Papaconstantinou, C. & Tunesi L. 2011. Overview of the Conservation Status of the Marine Fishes of the Mediterranean Sea. Gland, Switzerland and Malaga, Spain: IUCN, vii + 61 pp. (also available at http://data.iucn.org/dbtw-wpd/edocs/RL-262-001.pdf). Abecasis, D., Bentes, L., Ribeiro, J., Machado, D., Oliveira, F., Veiga, P., Gonçalves, J.M.S & Erzini, K. 2008. First record of the Mediterranean parrotfish, Sparisoma cretense in Ria Formosa (south Portugal). Mar. Biodiv. Rec., 1: e27. DOI: 10.1017/5175526720600248x. Abella, A.J., Arneri, E., Belcari, P., Camilleri, M., Fiorentino, F., Jukic-Peladic, S., Kallianiotis, A., Lembo, G., Papacostantinou, C., Piccinetti, C., Relini, G. & Spedicato, M.T. 2002. Mediterranean stock assessment: current status, problems and perspective: Sub-Committee on Stock Assessment, Barcelona. 18 pp. Abellan, E. & Basurco, B. 1999. Finfish species diversification in the context of Mediterranean marine fish farming development. Marine finfish species diversification: current situation and prospects in Mediterranean aquaculture. CIHEAM/FAO, 9–27. CIHEAM/FAO, Zaragoza. ACCOBAMS, May 2009 www.accobams.org Agostini, V.N. & Bakun, A. 2002. “Ocean triads” in the Mediterranean Sea: physical mechanisms potentially structuring reproductive habitat suitability (with example application to European anchovy, Engraulis encrasicolus), Fish. Oceanogr., 3: 129–142. Akin, S., Buhan, E., Winemiller, K.O. & Yilmaz, H. 2005. Fish assemblage structure of Koycegiz Lagoon-Estuary, Turkey: spatial and temporal distribution patterns in relation to environmental variation.
    [Show full text]
  • A Case Study of Abu-Qir Bay-Alexandria-Egypt
    International Journal of Environmental Monitoring and Analysis 2019; 7(3): 56-67 http://www.sciencepublishinggroup.com/j/ijema doi: 10.11648/j.ijema.20190703.11 ISSN: 2328-7659 (Print); ISSN: 2328-7667 (Online) Evaluation of Different Anthropogenic Effluents Impacts on the Water Quality Using Principal Component Analysis: A Case Study of Abu-Qir Bay-Alexandria-Egypt Mohammed Attia Shreadah 1, *, Abeer Abdel-Mohsen Mohamed El-Sayed 1, Asia Abdel Samea Taha 2, Abdel-Monem Mohamed Ahmed 2, Hanaa Hamam Abdel Rahman 2 1Marine Environmental Division, National Institute of Oceanography and Fisheries, Alexandria, Egypt 2Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt Email address: *Corresponding author To cite this article: Mohammed Attia Shreadah, Abeer Abdel-Mohsen Mohamed El-Sayed, Asia Abdel Samea Taha, Abdel-Monem Mohamed Ahmed, Hanaa Hamam Abdel Rahman. Evaluation of Different Anthropogenic Effluents Impacts on the Water Quality Using Principal Component Analysis: A Case Study of Abu-Qir Bay-Alexandria-Egypt. International Journal of Environmental Monitoring and Analysis. Vol. 7, No. 3, 2019, pp. 56-67. doi: 10.11648/j.ijema.20190703.11 Received : August 6, 2019; Accepted : August 27, 2019; Published : September 17, 2019 Abstract: Background: The growing increase in Egyptian population, as well as urbanization expansion; lead to a corresponding increase in industrial, agriculture, urban effluents that discharged into the aquatic environment of Egypt. Objective: This study was conducted to evaluate the alteration occurred in some water quality characteristics of different water bodies subjected to different types of pollutants. Methods: Different physicochemical parameters, nutrient salts, total dissolved copper, and total dissolved carbohydrate were measured according to advanced experimental methods and analytical techniques.
    [Show full text]
  • Lessepsian Migration of Zooplankton Through Suez Canal and Its Impact on Ecological System
    Egyptian Journal of Aquatic Research (2015) 41, 129–144 HOSTED BY National Institute of Oceanography and Fisheries Egyptian Journal of Aquatic Research http://ees.elsevier.com/ejar www.sciencedirect.com REVIEW ARTICLE Article Review: Lessepsian migration of zooplankton through Suez Canal and its impact on ecological system Howaida Y. Zakaria National Institute of Oceanography and Fisheries, Alexandria, Egypt Received 21 January 2015; revised 2 April 2015; accepted 2 April 2015 Available online 18 May 2015 KEYWORDS Abstract The marine environment of the East Mediterranean has been considerably impacted in Zooplankton; modern times by two man-made changes: the creation of a waterway between the Indo-Pacific Lessepsian migration; and the Mediterranean basins and the control of the Nile fresh-water outflow. The opening of Red Sea; the Suez Canal caused a migration generally from the Red Sea to the Mediterranean, and rarely Mediterranean Sea; in the opposite direction as the Red Sea is generally saltier and more nutrient-poor than the Suez Canal Atlantic, so the Red Sea species have advantages over Atlantic species in the salty and nutrient- poor eastern Mediterranean. Accordingly Red Sea species invaded the Mediterranean ecosystem and not vice versa; this phenomenon is known as the Lessepsian migration or erythrean invasion. The composition of zooplankton in the eastern Mediterranean has been shown to include a large proportion of Indo-Pacific and other circumtropical species which have successfully settled and pro- liferated in this environment. During the present study, an overview is provided on zooplankton migration through Suez Canal and its impact on the ecological system based on published literature.
    [Show full text]
  • Metal Pollution in Surface Sediments of Abu-Qir Bay and Eastern Harbour of Alexandria, Egypt
    Egyptian Journal of Aquatic Research (2013) 39, 1–12 National Institute of Oceanography and Fisheries Egyptian Journal of Aquatic Research http://ees.elsevier.com/ejar www.sciencedirect.com FULL LENGTH ARTICLE Metal pollution in surface sediments of Abu-Qir Bay and Eastern Harbour of Alexandria, Egypt S. Abdel Ghani *, G. El Zokm, A. Shobier, T. Othman, M. Shreadah National Institute of Oceanography and Fisheries, Egypt Available online 3 April 2013 KEYWORDS À2 À2 Abstract Concentrations of major constituents (Na, K, Ca, Mg, CO3 , SiO3 ) and some metals Abu-Qir Bay; (Fe, Al, Mn, Sn, Zn, V, Cu, Pb, As, Cd and Se) in surface sediments from Abu-Qir Bay and the Eastern Harbour; Eastern Harbour of Alexandria were investigated. Assessment of pollution was performed using Major constituents; several pollution indices. The adverse effects on aquatic organisms were determined by classifying Trace metals; the sediments according to sediment quality guidelines. Enrichment factors (EFs) revealed anthro- Surface sediments pogenic sources for Sn and Cd in Abu-Qir Bay; while in the Eastern Harbour Sn and Cd possessed high EF values (>30). High contamination factor (CF) for Sn and Cu (>6) was obtained. Concen- trations of Sn and Se in sediments of most studied sites can regularly and occasionally affect sed- iment-dwelling organisms. Low concentrations of Se strongly affect the variance in surface sediment composition in both studied areas. Pollution load index (PLI) indicated that most stations in both areas are polluted. ª 2013 Production and hosting by Elsevier B.V. on behalf of National Institute of Oceanography and Fisheries. Introduction water volume of 4.3 km3.
    [Show full text]