The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
13
4
2009
04
01
Assessment of heavy metals in edible muscles of some marine organisms from the Arabian Gulf (in Saudi Arabia)
1
15
EN
Hala
Abd -El Salam
Department of zoology, Faculty of Science, Cairo University, Egypt
10.21608/ejabf.2009.2041
Over the last decades, there has been growing interest in determining heavy metal levels in the marine environment and attention was drawn to the measurement of contamination levels in public food supplies, particularly<br />seafood. The aim of this study was to determine the current levels of total copper, chromium, cadmium, lead, manganese ,magnesium, zinc and mercury in two crustacean species namely Penaeus sp. and Portunus sp. and one molluscan cephalopod species (Sepia sp.) which were caught from Saudi Arabia coastlines on the Arabian Gulf to ascertain whether these concentrations exceeded the permissible limits and to identify any potential public health risks that could be associated with dietary intakes of such seafood from the Arabian Gulf.<br />The results revealed that the average concentrations of these heavy metals, except for cadmium, in edible muscles of Sepia were higher than that of prawn and crab. The mean concentrations of these metals, except for chromium<br />and lead, were lower in edible tissues of the prawn than that in the crab. Furthermore, it was recorded that mercury was not detected in edible muscles of both prawn and crab. Therefore, metals levels in tissues of these aquatic<br />organisms were found below the maximum content recommended by health agencies and so they are considered safe for human consumption.
Arabian Gulf,Heavy metals,Muscles,Sepia Penaeus,Partunus
https://ejabf.journals.ekb.eg/article_2041.html
https://ejabf.journals.ekb.eg/article_2041_9aa6cd36d338be9ab1d04a71e14ceece.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
13
4
2009
04
01
Ultrastructural studies of the tegument and excretory system of the cestode Nematotaenia kashmirensis (Fotedar, 1966) infecting the toad Bufo regularis in Egypt.
17
34
EN
Amira
El Kabbany
Department of Zoology, Faculty of Sci., Zagazig Univ., Zagazig, Egypt.
10.21608/ejabf.2009.2042
The fine structure of the tegument of N. kashmirensis (Nematotaeniidae: Cyclophyllidea) mature proglottids consists of distal cytoplasm connected with underlying perikarya by cytoplasmic bridges. The distal cytoplasm lies on<br />the basal lamina below which there are two layers of smooth muscles, circular and longitudinal bundles. The distal cytoplasm contains mitochodria, electron dense bodies and vesicles of variable size, shape and density. The tegument bears three types of microtriches, namely: filiform, spiniform and digitiform. They have multiple functions, such as amplification of the surface area for digestion and absorption, excretion, movement, attachment to the intestinal mucosa of their hosts and external protection. Type and distribution of microtriches are considered to be of systematic<br />and phylogenetic importance. The fine structure of the excretory system consists of numerous flame cells<br />each bears a bunch of 54 cilia, which are anchored in the cytoplasm by means of basal bodies possessing striated rootlets. All cilia in the flame cell are aligned in the same direction. The flame and duct cells are connected by interdigitating ribs of cytoplasm separated by a fibrous sheet. Both internal and external leptotriches<br />are also present. The apical surface of the cytoplasm lining the duct is convoluted and its surface area is further amplified by microvilli.
Toad,Bufo regularis,tegument,excretory system,Nematotaenia,kashmirensis
https://ejabf.journals.ekb.eg/article_2042.html
https://ejabf.journals.ekb.eg/article_2042_92d310caf6014cf3572b4ae33a46876f.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
13
4
2009
04
01
Light and scanning electron microscope studies on the nematode Aplectana macintoshii Travassos,1931(Ascaridida:Cosmocercidae) infecting the toad Bufo regularis in Egypt.
35
47
EN
Amira
El Kabbany
Department of Zoology, Faculty of Sci., Zagazig Univ., Zagzig, Egypt.
Hesham
Sharaf
Department of Zoology, Faculty of Sci., Zagazig Univ., Zagzig, Egypt.
Hala
Abdel salam
Department of zoology, Faculty of Sci., Cairo Univ., Giza, Egypt.
10.21608/ejabf.2009.2043
Aplectana macintoshii Travassos,1931 from the intestine of Bufo regularis was described and illustrated. A. macintoshii adult worms are small dieocious nematodes. Males are distinguishable from females by their smaller<br />size, long slender curved posterior end and accessory copulatory structures with two equal spicules. Cuticle with longitudinal and circular annulations and somatic papillae. Mouth is small opening surrounded by three lips. Each lip<br />bears two conspicuous papillae. The alimentary canal is composed of mouth that leads to oesophageal corpus, oesophageal bulb, intestine and rectum. The reproductive system of A. macintoshii is tubular. Females have two genital tubes that are distinguished into two ovaries, oviducts, uteri which join to form a single vagina which opens to the exterior through the vulva that lies near the anterior end of the body. The male genital tube consists of a blind-ending testis,seminal vesicle, vas deferens and the ejaculatory duct which opens into the rectum via the cloaca. The genital tubes of these parasitic nematoades are twisted around the intestine.
Bufo regularis,Aplectana macintoshii,Electron Microscope,Nematode
https://ejabf.journals.ekb.eg/article_2043.html
https://ejabf.journals.ekb.eg/article_2043_7c271bd28b359b1e4d5344ebc7bac8a6.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
13
4
2009
04
01
Food and Feeding Habits of Three Cichlid Species Inhabiting Damietta Branch of the River Nile, Egypt
49
66
EN
Kariman
Shalloof
0000-0002-3040-8213
National Institute of Oceanography and Fisheries,
101 Kaser El- Eini St. Egypt.
dr_kariman88@yahoo.com
Midhat
El-Kasheif
National Institute of Oceanography and Fisheries,
101 Kaser El- Eini St. Egypt.
Mohammad
Authman
Department of Hydrobiology, National Research Center,
Dokki 12622, Giza, Egypt.
10.21608/ejabf.2009.2044
The present study is concerned with the seasonal analysis of the stomach contents of three species of cichlid fishes inhabiting Damietta branch of the River Nile, Egypt, namely Oreochromis niloticus (Linn., 1758), Sarotherodon<br />galilaeus (Linn., 1758) and Tilapia zillii (Gerv., 1848). The natural food was studied from the stomach contents of fish ranging from 12-29, 11- 24 and 10- 21 cm in total length of the previous species, respectively. Stomach contents were<br />analyzed using the frequency of occurrence and Percentage of composition methods. Additionally, feeding intensity, index of relative importance (IRI) and selectivity index (S) were calculated. The results showed that, food from plant<br />origin dominates the diet of the three studied species and occurred frequently in more than 60.0% of the examined stomach. Values of IRI emphasized the importance of diatoms, blue green and green algae as major food resources in<br />the stomach of O. niloticus followed by rotifers and organic detritus. S. galilaeus and T. zillii followed nearly the same trend as O. niloticus, but plant tissues follow blue green and green algae in the diet of T. zillii. IRI indicates also the<br />importance of food of animal origin in the diets of O. niloticus and S. galilaeus than T. zillii. The feeding intensity is strongly influenced by season, since the highest stomach fullness occurred during summer. In conclusion, Cichlid fish<br />species in Damietta Branch of River Nile are omnivorous, and did not consume food at random but have the ability to select and choose the preferred food stuff even during different seasons. These seasonal variations in preferred food makes the intraspecific competition between these species very low.
River Nile,Damietta Branch,O. niloticus,S. galilaeus,T. zillii,feeding,Habits,Feeding intensity,frequency of occurrence
https://ejabf.journals.ekb.eg/article_2044.html
https://ejabf.journals.ekb.eg/article_2044_478b32165605989fc3b9054b2b48d3c4.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
13
4
2009
04
01
Factors affecting the distribution of some heavy metals in Lake Nasser water, Egypt
67
83
EN
Mostaf
Korium
National Institute of Oceanography and Fisheries (NIOF) , Inland Water and
Aquaculture Branch, Aswan Research Station, Egypt.
Mohamed
Toufeek
National Institute of Oceanography and Fisheries (NIOF) , Inland Water and
Aquaculture Branch, Aswan Research Station, Egypt.
10.21608/ejabf.2009.2045
This study was carried out on Lake Nasser, Aswan province, Egypt, along of about 330 km, south of Aswan High Dam Reservoir (AHDR) extends to Argeen area near to Sudan border line. The objective of the study was to declare<br />the distribution pattern and the levels of heavy metals and their effect on the Lake Nasser water quality which is the main source of fresh water in Egypt. Water samples were collected from subsurface and bottom water in 10 stations<br />along the distance of the Lake Nasser inside of Egypt border during winter and summer 2005, with beginning of the flood period. The results showed that the main factors affecting the physico-chemical properties in the lake are<br />temperature and flood water. The mean concentrations of Mn, Co, Ni, Cu, Cd and Pb in surface and bottom water increase in southern part than the northern area of the lake, as well as the increase occurs during summer than winter with low temperature and increase of dissolved oxygen. In addition, physicochemical parameters have influenced on the distribution of heavy metals. There is strong positive correlation coefficient between Co with DO, total organic<br />nitrogen, and NH3 forming stable complexes which dissolve in water. Nickel solubles as NiCO3 at high pH values. Cd has a negative correlation coefficient with SiO3 -, TON, NH3, COD. These correlations reveal that Cd makes many<br />complexes compounds which precipitate from water to sediment. Pb has a positive correlation coefficient with TSS, temperature and Nitrate; this exhibits increase of lead content with these parameters. However, from the results<br />obtained, the concentrations of these metals are lying in the permissible limits as compared with World Health Organization (WHO) figures except Cd and Pb during summer in southernmost site of Lake Nasser at Argeen.
Lake Nasser,Physico-chemical properties,Heavy metals,permissible limits
https://ejabf.journals.ekb.eg/article_2045.html
https://ejabf.journals.ekb.eg/article_2045_722bb4168ffd74123dc3921d0def6637.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
13
4
2009
04
01
Growth response and physiological activities of the Nile tilapia (Oreochromis niloticus) fed basal diets supplemented with ginger (Zingiber officinale) as natural growth promoters
85
107
EN
Raky
Attalla
National Institute of Oceanography and Fisheries, Cairo, Egypt.
10.21608/ejabf.2009.2046
n experiment was conducted to evaluate the effect of two forms of dehydrated natural antioxidants rhizomes extracts ginger (Zingiber officinale) on growth performance feed utilization and hematological parameters<br />of Oreochromis niloticus fingerlings. Four treatments were applied, two forms of ginger (powder and oil extract), and their mixtures (1:1) of each form, in addition to control group were fed basal diets without supplements of herbs. The<br />experiment was conducted using cement ponds divided into four equal compartments each was stocked with 40 fingerlings oF Nile tilapia with an average initial body weight of 17.1 ± 1.2 g, and body length 10.0 ± 0.7 cm. The<br />experiment lasted for 12 weeks. Generally, growth performance, feed utilization ratios were improved for Nile tilapia (Oreochromis niloticus), fed on diets with the two forms of the feed supplements compared to fish fed on the control diet<br />All growth parameters in all supplemented groups increased significantly (P<0.05) as compared to the control group, especially for the fish fed on the mixture, with the highest survival rate. Incorporation of ginger extract improved<br />the antioxidant attributes and reduced quality degradation of test diets during storage at ambient conditions. In terms of liver and blood measurements, alkaline phosphatase (ALP), aspartate aminotransferase (AST) and alanine<br />aminotransferase (ALT) activities, these parameters decreased significantly (P<0.05) for fish fed on all treated groups with ginger. Plasma total protein, albumin and globulins of fish fed on the experimental diets significantly<br />increased (P<0.05) for those fed on the ginger, while blood glucose,triglycerides and cholesterol values were significantly decreased (P<0.05) in the same treated groups as compared to the control one. These results revealed that<br />the feeding with a mixture of ginger (powder and oil extract), can promote growth rate, decrease mortality rate and improve the physiological activities in reared fish, and can be potentially used as good sources of antioxidants.<br />
Growth,physiological activities,Oreochromis niloticus,Zingiber officinale
https://ejabf.journals.ekb.eg/article_2046.html
https://ejabf.journals.ekb.eg/article_2046_12873e599bc66c2da021135b9723f211.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
13
4
2009
04
01
تقدير ترکيزات العناصر الثقيله في العضلات الصالحه للأکل لبعض الکائنات البحريه بالخليج العربي _المملکه العربيه السعوديه
1
23
EN
10.21608/ejabf.2009.2047
https://ejabf.journals.ekb.eg/article_2047.html
https://ejabf.journals.ekb.eg/article_2047_d9e84366b04b2ff4f2cbe9ae0763cbc5.pdf