@article { author = {A. Gabal, Mahmoud}, title = {Morphology and polymorphism of CorbiculaJluminea (Mutter, 1774) (Molhisca : Bivalvia: Corbiculidae) of River Nile, Egypt}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {1-11}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1956}, abstract = {The Corbiculidae exhibits a great variations in shell-shapes and colours that make the discrimination of the bivalves of the genus in difficult, Corbicula jluminea and C. ftunrinalis. This study was carried out to solve this conflict. The substratum of the investigated clams is sand-gravel or sand-gravel-muddy and its water is transparent and calm.Moreover, the morphological characters (shapes and colours) of the shells were thoroughly investigated and sorted into three groups according to shapes and colours.Electrophoresis SDS= polyacry (amide electrophoresis gel were made on the three sorted groups and juveniles that show no differences in protein patterns as well as their scans profiles. It was concluded that all ecomorphs are belonging to one species; C. Jluminea that collected from irrigation canal system of River Nile, Egypt.}, keywords = {Morphology,Polymorphism,Bivalvia,Corbicula jluminea,Electrophoresis,River Nile. Egypt}, url = {https://ejabf.journals.ekb.eg/article_1956.html}, eprint = {https://ejabf.journals.ekb.eg/article_1956_095e742def3773431b0fecb7dc90dac3.pdf} } @article { author = {Al-Bassell, Dayhoum and Atwa, Marwa and Abdel-Baki, Abdel - Azim}, title = {Trichodinid ectoparasites (Ciliophora: Peritrichia) of MugH cephahts Linnaeus, 1758 from Lake Qarun, Egypt}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {13-26}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1957}, abstract = {During a parasitological survey in Lake Qarun, 140 fish of Mugil cephahts were investigated for protozoan ectoparasites. Three trichodinid species were found on gills of the investigated fish. These species are; Trichodina lepsii Lorn, 1962 ; T. puytoraci Lorn, 1962 and T. batala AH, 1996, Comparative descriptions are presented for the recorded species. The present study proved that the stocking process of the lake is the main source for the recorded trichodinids. Moreover, the study recommended quarantine measures for the stocking fry before releasing into the water bodies. .}, keywords = {Mugil cephalus,Lake Qarun Ciliophora,ectoparasites}, url = {https://ejabf.journals.ekb.eg/article_1957.html}, eprint = {https://ejabf.journals.ekb.eg/article_1957_5fd7aa3bdac1aca6a3c82bcf62b87b18.pdf} } @article { author = {Shokr, EL Sayed}, title = {Effects of aluminum chloride on some hematological and biochemical parameters of Tilapia zitlii G}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {27-40}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1958}, abstract = {rilapiazlUiii fish were exposed to aluminum chloride under alkaline water (pH 7.3). The fish were divided into 4 groups control group and three groups exposed to 50, 100 and 200/ig / liter of aluminum chloride respectively for 24 hr., 48 hr. and 96 hr.The fish showed a physiological response after 24 hr. of exposure to 50, 100 and 200ug / liter of aluminum chloride respectively where, approximately 100% increase in red blood cells (RBCs), white blood cells (WBCs), liematocrit value (He) and hemoglobin content (Hb) respectively, Also, there are increased in serum glucose level, total protein, aspartate and alanine amino transferase activities (AST and ALT) and increased serum creatinine and uric acid concentration after 24hr. from exposure the fish to 50, 100 and 200pg / liter of aluminum chloride respectively. The results indicate that the fish that exposed to 50, 100 and 20Qug / liter of aluminum chloride respectively for 48 hr. increase blood constituents, serum glucose level, serum total protein and serum AST, ALT activities, creatinine and uric acid level. Moreover, the fish that exposed to 50, 100 and 20Qug / liter of aluminum chloride respectively for 96 hr, showed highly significant increase of RBCs, WBCs, He and Hb as well as in the serum glucose level, serum total protein and serum AST and ALT activities. The serum creatinine and uric acid showed increased in the fish that exposed to 50, 100 and 200ug / liter of aluminum chloride respectively for 96 hr. These data suggest that fish respond to aluminum exposure by increasing their WBCs, enzymes of liver functions and kidney functions.}, keywords = {Tilapia zillii-,aluminum chloride,biochemical parameters}, url = {https://ejabf.journals.ekb.eg/article_1958.html}, eprint = {https://ejabf.journals.ekb.eg/article_1958_479bc4965042a16b65fbb960c05e211b.pdf} } @article { author = {Awwad, Mohammed and Badawy, Ezzat}, title = {Molecular identification and Phytogeny of the tow freshwater fish Bagrus bajad and Bagrus docmac in Egypt}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {41-56}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1959}, abstract = {In Egypt, two species of Bagrus fish have been described based on morphometric, meristic and cytotaxonomical characteristics. These species are Bagrus bajad and Bagrus docmac. The accurate identification of these fishes is complicated by the high variation in their characters, similarity among species and in some cases by the size of the fish. In this paper, we used polymerase chain reaction (PCR) and restriction fragment length polymorphisms (RFLPs) analysis of the mitochondrial cytochrome b gene {Cyt b) for molecular identification of Bagrus spp. in Egypt. The present study aimed at evaluating such advanced molecular biological approaches for identification of Bagrus spp. Genomic DNA was extracted from the two species of Bagrus. About 1120 bp Cyt b gene was amplified by PCR using specific primers. The technique of restriction fragment length polymorphisms was used to identify the specific Cyt b gene for each species. Accl, Apol and Eaei restriction endonucleases would differentiate Cyt b sequences of Bagrus bajad and Bagrus docmac into one group. .BseRl, BsrriBl, Dra\, BsaOl, Xmdill, Aatl, BamHl and EcoRl restriction endonucleases differentiated the two species as a polyphylogenetic relationship.}, keywords = {identification,Bagrus,Cyt b,RFLPs,PCR,Polymorphism}, url = {https://ejabf.journals.ekb.eg/article_1959.html}, eprint = {https://ejabf.journals.ekb.eg/article_1959_5b46e3f672fed09a9ec5a6d432024936.pdf} } @article { author = {El Komi, Mohamed and Emara, Ahmed}, title = {Benthos monitoring in Red Sea, Egypt A- The western coast of the Suez Gulf}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {57-79}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1960}, abstract = {Fourteen macrobenthic groups of identified taxa were involved will. ive main higher taxonomic levels on 15 monitoring sites at the western cu^si of the Gulf of Suez during one year (2000) with an average of 125 ind./m2. These levels included Polychaeta (81.0%), Crustacea (5.7%) (Decapoda, Ciumteea, Amphipoda and Anisopoda), Mollusca (7.01%) (Scaphopoda, Gastropoda and Bivalvia), Echinodermata (0.60%) (Echinoidea and Ophiuroidea) and the other minor groups 5.8% (Nematoda, Hydroids, Bryozoa, and Cephalochordata). The density and diversity of marine benthos were higher on hard and cobble bottoms compared to muddy sand substrates. The changes in benthic fauna structures in the sandy area depend not only on the state of poUution, but also on the type of substrate. The benthic fauna assemblages were dominated by polychaetes, which showed the highest density, reaching'81,0% of total density. Polychaete species were more frequent at nearly all sites. The dominant family was Capitellidae, being recorded at 4 sites among benthic fauna of total density, Bivalves were iess abundant (6.53%) though TellineUa staurella had the maximum occurrence at 4 sites, yielding a total of 70ind/m2. (52%) followed by Nematoda, Anisopoda and Amphipoda reached 3.75, 2.30 and 1.80%, while Decapoda and Bryozoa were represented 1.23% &.L23% of the total density respectively. The percentage of abundance of benthic groups at higher taxonomic levels in the sampling sites along the western coast of Suez Gulf can be arranged in the following sequence: polychaetes (81.0%) > molluscs (7.01%) > other groups (5.8%) > crustaceans (5.7) > echinoderms (0.60%). The composition of benthos in the study area is affected by a complex interaction of environmental parameters, which can be grouped into physical and biological parameters as well as pollution.}, keywords = {Benthos,pollution,biomass> sediment,Suez Gulf}, url = {https://ejabf.journals.ekb.eg/article_1960.html}, eprint = {https://ejabf.journals.ekb.eg/article_1960_452542e998b44b2a51eccbb0bd5372ef.pdf} } @article { author = {AbouEIElla, Salwa}, title = {Pesticides residues in environmental components of Nubia Lake, Sudan}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {81-94}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1961}, abstract = {Field visits were carried out during January 2006 along the north part of Nubia Lake for collecting samples offish; water and sediment to ensure the vvater quality safety before entering Egypt. The results indicated that residues of organochlorine and organophosphorus pesticides are present at Low concentrations in the water and majority of common species. These residues have apparently originated from the areas of intensive pesticide application in the Gezera and along the White Nile in central Sudan. So, it is essential that continuous monitoring of residues in the environmental components of the whole lake should be conducted.}, keywords = {Pesticides,fish,water,Sediment,Nubia Lake}, url = {https://ejabf.journals.ekb.eg/article_1961.html}, eprint = {https://ejabf.journals.ekb.eg/article_1961_58129027f268ca157834e7b15874cbfc.pdf} } @article { author = {All, Abdel -Hamid and Emara, Ahmed}, title = {Benthic community associated with coral reefs in the coastal area of Gulf of Aqaba, Red Scs, Egypt}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {95-108}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1962}, abstract = {Benthic community associated with coral reefs was investigated at four sites along the coastline of Gulf of Aqaba, Red Sea Egypt. The four sites (Taba, Nuweiba, Dahab and Shann El-Sheikh) are important popular spots for recreational activities and the reefs of these sites are of fringing type. Drupella cornus and Trochus maculatus were the most important gastropods associated with coral reefs. Taba and Sharm El-Sheikh showed high occurrence of worm shells (Gastropoda) Dendropdma maximum (up to 30 individuals / colony). Concerning the abundance of bivalves (Mollusca), Taba showed greater abundance of Spondylus varium and Pteria penguin ^ whereas Sharm El-Sheikh had the greatest abundance of Tridacna maxima (up to 40 individuals/lOm). The studied sites exhibited high density of Echinoderms, particularly the sea urchins Diadema setosvm, Tripneitstes gratilla and Heterocentrotus mammillatus. The study revealed selective associations between mollusc species and coral growth forms. The bivalve Pteriapenguin was found to be attached with plate-like coral Mellipora platyphylla and the branching coral Millepora dichotoma. The vennetid gastropod Dendropoma maximum was also found to be inserted into the Melliporid coral colonies. Aggregates of Drupella cornus were observed attached with branching corals, especially Acropora spp. and Stylophora spp. In contrast to the Drupella cornus, the corallivore gastropod CoralUphila neritoidea and the bivalve Tridacna maxima were predominantly preying on the massive corals of Poriies spp. The distribution of coral growth forms was compared. In general, massive, branched and plate-like colonies were the dominant growth forms of corals in the area of study. Massive colonies were dominant in the reef flat area, reef margin and the deep parts of the outer reef slope. Branching coral colonies were flourishing on the fringing reef flat, the barrier reef flat and the outer reef slope until 10m depth (upper layers of outer reef slope), their importance declined with depth. All plate-like coral colonies in the area of study belong to Hydrocorals (Milleporidae); Millepora platyphyla. They are abundant in the reef edge and upper zone of outer reef slope (the reef zone exposed to high wave action). The considerable abundance of macroalgae in the coral communities of the sampling sites were probably resulting from increased levels of nutrients caused by enhanced terrestrial runoff of sewage and sediments concomitant with increased human pressure in the area and coastal development for tourism expansion. The present study attracts the attention to the problem that the benthic community undergoes adverse influences of enhanced human pressure concomitant with growth of coastal cities and intensive constructions for tourism development in the Gulf of Aqaba. This is indicated by increased boring organisms, coral bioeroders and abundance of macroalgae.}, keywords = {Benthos,Coral reefs,Gulf of Aqaba,Red Sea,Egypt}, url = {https://ejabf.journals.ekb.eg/article_1962.html}, eprint = {https://ejabf.journals.ekb.eg/article_1962_3583e657cd608faf868deaf63f4c1bf8.pdf} } @article { author = {Abdel-Aal, Mohamed}, title = {Effects of dietary Iipid levels on growth performance and blood parameters of the African catfish {Cfarias gariepinus).}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {109-120}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1963}, abstract = {The African catfish (Clarias gariepinus) fed on diets containing different lipid levels (5%, 10%, 15% and 20%) at a feeding rate of 3% of the live body weight. Fish were reared in glass aquaria at a stocking rate of 10 fish at each aquarium. Each dietary Iipid level was presented in triplicates. The trial lasted for 90 days from the start. Ten fish were distributed in 100-L glass aquaria. Fish fed daily for 90 days in triplicate form.Results revealed that fish growth parameters as a final weight, weight gain, and specific growth rate were generally increased by increasing dietary lipid levels up to 10%, after which the growth rate was markedly decreased. Differences in feed intake among different treatments varied significantly (PO.05). Feed conversion ratio (FCR) was affected by dietary levels of lipids. No significant changes in survrval rate were observed due to the variation in dietary lipid levels. The highest values of the erythrocyte count (RBCS), hemoglobin content (Hb) and packed cell volume (PCV) were obtained in fish group fed on the diet containing 15% and 20% Iipid. Furthermore, mean corpuscular value (MCV), mean corpuscular hemoglobin (MCH) and mean corpuscular hemoglobin concentration (MCHC) were changed in blood of fish fed on different levels of lipid. Glucose, total lipids, and total protein were significantly affected by increasing the lipid levels. Plasma total lipids and total protein were increased in fish with increasing lipid levels in the diets, Also, plasma AST and ALT activities increased significantly with increasing the level of lipids in fish diets, reaching the highest value in fish group fed diet with 20% lipids. The hepato-somatic index and gonado-somatic index of African catfish were significantly increased with increasing lipid level in fish diets. The present study demonstrated that the optimum dietary Iipid level was 10% for African catfish and there was no observed beneficial effect when fish was fed a diet containing 15% or 20% lipid levels.}, keywords = {African catfish,dietary lipids,Growth performance,hematolpgical parameters}, url = {https://ejabf.journals.ekb.eg/article_1963.html}, eprint = {https://ejabf.journals.ekb.eg/article_1963_c75f93733fec581c219df4c9d8e5f7c3.pdf} } @article { author = {Gad, Nahed and Mohamed, Fatma}, title = {Bioaccumulation and effects of organochlorine and pyrethroid pesticides residues on Oreockromis niloticus and Mugil cephaliis from some fish farms at El-Fayoum Governorate, Egypt}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {121-148}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1964}, abstract = {The residues of several organochlorine and pyrethroid pesticides were measured in the gills and intestine of Oreochromis niloticus and Mugil cephalus that were collected from three fish farms at El-Fayoum Governorate, during spring 2006. The impact of the accumulated pesticides on the total proteins, total lipids and the histological structure of the gills and intestine was studied. The results showed the existence of a wide variety of organochlorine pesticides residues (a-HCH, y-HCH, Aldrin, Heptachlor, Dicofol, Chlordane, Dieldrin, Endrin and o,p-DDT) and pyrethroid pesticides residues (Thiram, Pencycuron, Atrazine, Butachlor, Diniconazole, Cypermethrin and Fenvalerate) in the gills and intestine of both fishes. The total protein and lipid contents in the gills and intestine of the studied fishes from the three fish farms showed a highly significant decline. Moreover, several histopathological alterations as severe degenerative, necrotic and proliferative changes were observed in the gill filaments and secondary lamellae. Furthermore, edema, curling and atrophy in secondary lamellae, as well as dilation and congestion in the blood vessels of gill filaments and haemorrhage between gill filaments were noticed. On the other hand, the intestine showed severe degenerative and necrotic changes in different intestinal layers with aggregation of necrotized cells in the intestinal lumen, atrophy in the muscularis, haemorrhage in the submucosa, edema between the intestinal layers, increased goblet cell population and dilation in the blood vessels of the submucosa.}, keywords = {Pesticides,bioaccumulation,proteins,lipids,his topatho logy,Oreochromis niloticus,Mugil cephalus^ fish farms,El-Fayoum Governorate}, url = {https://ejabf.journals.ekb.eg/article_1964.html}, eprint = {https://ejabf.journals.ekb.eg/article_1964_d2181b4c913e79e376169db00f9303f0.pdf} } @article { author = {Amin, Amal and EL-Halfawy, Magdy and Ramadan, Amal}, title = {Management and Reproduction of the Male Brushtooth Lizardfish Saurida undosquamis (Richardson) front Gulf of Suez, Egypt}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {149-162}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1965}, abstract = {Age, growth and reproduction atSaurida undosquamis collected from Attaka fishing port from October 2004 to May 2005 was studied by examining 390 specimens caught by trawlers in Suez Gulf waters. The total length of males ranged between 9.5 cm to 29.8 cm. The length (L) - weight (W) relationship was estimated as W = 0.0042*3.1315. The age data derived from the length frequency data analyzed using the FISAT soft ware were used to calculate the growth parameters of the von Bertalanffy equation (1938). The estimated parameters were L^ = 31.03 cm, K = 0.44 and t = -1,059. The maximum age was 5 years. The 2-year age group was dominant in the catch. Macroscopic appearance of the testes demonstrated seven stages of maturity as virgin, maturing virgin , developing, developed, gravid, spawning and spent. Males recorded first sexual maturity at a total length 17.4 cm. Gonadosomatic index illustrated that this fish have prolonged spawning season nearly all the year round with main peak in May (2.6). The annual rates of total, natural and fishing mortality were calculated as 1.59, 1.32 and 0.27year"1 respectively. Exploitation rate E was estimated as 0.83. The relative yield per recruit was estimated using the parameters obtained for male. The results suggest that the present level of fishing and natural mortality are much higher than that gives the maximum yield per recruit.}, keywords = {Gulf of Suez,male Saurida undosquamis,Age,Growth,first sexual maturity,Reproductive biology,exploitation rates,yield per recruit}, url = {https://ejabf.journals.ekb.eg/article_1965.html}, eprint = {https://ejabf.journals.ekb.eg/article_1965_526b5f54e865e9b3c5a2a9c7c73ab553.pdf} } @article { author = {}, title = {تعدد الأشکال في محاره الماء العذب (کوربيکيولا فلاميني) (موللر ,1774,(الرخويات :ذوات المصراعين :الکوربيکيوليدي ) من نهر النيل -مصر}, journal = {Egyptian Journal of Aquatic Biology and Fisheries}, volume = {11}, number = {4}, pages = {1-10}, year = {2007}, publisher = {The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)}, issn = {1110-6131}, eissn = {2536-9814}, doi = {10.21608/ejabf.2007.1966}, abstract = {}, keywords = {}, url = {https://ejabf.journals.ekb.eg/article_1966.html}, eprint = {https://ejabf.journals.ekb.eg/article_1966_9fd90c549e7333de13a3ca7fe1e2d37a.pdf} }