The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
18
1
2014
01
01
Impact of sodium lactate as a growth promoter on the hepatopancreas of the freshwater prawn Macrobrachium rosenbergii (de Man, 1879)
1
11
EN
Magdy
Khalil
Zoology Dept., Fac. Science, Ain Shams University, Cairo, Egypt.
ejabf2017@gmail.com
Setaita
Sleem
Zoology Dept., Fac. Science, Ain Shams University, Cairo, Egypt.
Ashraf
Goda
National Institute of Oceanography and Fisheries, Cairo, Egypt.
Madlin
Habashy
National Institute of Oceanography and Fisheries, Cairo, Egypt.
Hanan
Shtewi
Zoology Dept., Fac. Science, Ain Shams University, Cairo, Egypt
10.21608/ejabf.2014.2190
In the present study, histological changes of hepatopancreas were studied in response of using sodium lactate as a growth promoter to the freshwater prawn Macrobrachium rosenbergii. The prawns were fed on diet with five concentrations of sodium lactate (1, 1.5, 2, 3 and 4g/kg of diet) as food supplement for 103 days.<br />Results showed that R and B-cells were very sensitive to different diets. Slight changes were apparent in the hepatopancreas in the 1% concentration. While, at 1.5 % concentrations, swollen of the cells and enlarged of the vacuoles were observed. Regarding the concentrations of 2%, more accumulation of vacuoles was exhibited. Increase of vacuoles in the R-cells, abnormalities of B-cells, atrophy of the F-cells and pyknosis in the hepatopancreatic cells at 3 & 4% were observed.<br />This investigation and other results of the detailed study of the same authors concluded that the best using concentration of sodium lactate is 1%, because it has mild histological effects and at the same times, it has the best promotion for the growth rate of M. rosenbergii.
Macrobrachium rosenbergii,sodium lactate,organic acids,acidifiers,hepatopancreas
https://ejabf.journals.ekb.eg/article_2190.html
https://ejabf.journals.ekb.eg/article_2190_aed0d0ee42b73929fadc77d7c3bca6a6.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
18
1
2014
01
01
Effect of different sources and levels of some dietary biological additives on: III- body composition and muscular histometric characteristics of Nile Tilapia, Oreochromis niloticus
13
24
EN
Abdelhamid
Mohamed1
Anim. Prod. Dept., Fac. of Agric., Al-Mansourah Univ., Al-Mansourah, Egy
Ahmed
Mehrim
Anim. Prod. Dept., Fac. of Agric., Al-Mansourah Univ., Al-Mansourah, Egy
Medhat
Seden
Cent. Lab. For Aqua. Res., Abbasa, Abo-Hammad, Egypt.
Osama
Zenhom
Cent. Lab. For Aqua. Res., Abbasa, Abo-Hammad, Egypt.
10.21608/ejabf.2014.2191
This study aimed to investigate the effect of dietary graded levels of Aqua Superzyme, Garlen Allicin, and Diamond V (Original XPC) on the chemical composition and histometric parameters of males Nile tilapia Oreochromis niloticus. The carcass composition concerning their DM, CP, and EE contents are increased by age advance, but the ash percentages decreased. At the end of the experiment (16 weeks), DM did not significantly (P≥0.05) influence by all dietary treatments; yet, 0.01% of the diet of either the 1st two substances was responsible for the highest CP and ash percentages and the lowest EE and energy contents. Moreover, 0.5% of the diet of the 3rd substance gave the highest (P≤0.05) level among its tested levels concerning CP and the lowest (P≤0.05) EE and energy contents, but ash was not affected (P≥0.05). The best treatment (highest carcass crude protein and lowest ether extract percentages) was feeding fish the diet containing Diamond V-Original XPC at 0.5% of the diet. The same probiotic at the same level led also to improve most of the histometric characteristics of the dorsal muscles. So, it could recommend the dietary inclusion of the probiotic Diamond V-Original XPC at 0.5% of the tilapia diet.
Prebiotic – probiotic – composition – histometric – Nile tilapia
https://ejabf.journals.ekb.eg/article_2191.html
https://ejabf.journals.ekb.eg/article_2191_6dd6e701db1f5aeb85213ca6bad6f484.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
18
1
2014
01
01
Population structure, condition index and age structure of the Mediterranean carpet shell clams Donax semistriatus and Donax trunculus (Mollusca: Bivalvia) in Idku, Egypt
25
48
EN
Rabab
Alkaradawe
Department of Biology, Faculty of Education, Suez Canal University
Zakaria
Morsy
Department of Biology, Faculty of Education, Suez Canal University
Samya
Mohammad
Department of Zoology, Faculty of Science, Port Said University
Saad
Mohamed
Department of Marian Biology, Faculty of Science, Suez Canal University
10.21608/ejabf.2014.2192
This study investigates the population structure and shell morphometric relationships for the most common bivalve species in Egypt; Donax semistriatus and Donax trunculus. The clams were monthly collected from November 2008 to May 2010 from two sites on the Mediterranean coast, Idku city, Behira governorate, North Egypt. The most dominate size of the calm D. semistriatus is the individuals with class intervals of 12.1-16 mm. For D. trunculus, animals with size class intervals of 18.1-22 mm and 14.1-18 mm dominated site 1 and site 2 respectively. The population of D. semistriatus showed two periods of recruitments each year whilest that of D. trunculus recorded one period only. The results also showed apparent general tendency toward negative allometry in most relationship between shell length and each of shell measurements and body weigh parameters. Positive allometric growth exhibited in gonad weight / shell length and dry weight/shell length relationships. The growth rate at site 2 slightly higher than that at site 1 for the two clams. Gonad indices of both species were more or less coincided with the reproductive activity. In addition, digestive gland and condition indices were also discussed in the present study. Age determination using Bhattacharya's method revealed that D. semistriatus and D. trunculus recorded three age groups at both sites. Several ecological explanations were formulated for the two bivalve species.
Donax,morphometric relationships,allometric growth,Idku,Egypt
https://ejabf.journals.ekb.eg/article_2192.html
https://ejabf.journals.ekb.eg/article_2192_bfd5b68b1c269e21b02a69af7861beb0.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
18
1
2014
01
01
Effect of different sources and levels of some dietary biological additives on: IV-immunity and haematology of Nile Tilapia, Oreochromis niloticus
49
60
EN
Abdelhamid
Mohamed
Anim. Prod. Dept., Fac. of Agric., Mansoura Univ., Mansoura, Egypt
Refaey
Ali
Anim. Prod. Dept., Fac. of Agric., Mansoura Univ., Mansoura, Egypt
Seden
Abdelfatah
Cent. Lab. For Aqua. Res., Abbasa, Abo-Hammad, Egypt
Osama
Zenhom
Cent. Lab. For Aqua. Res., Abbasa, Abo-Hammad, Egypt
10.21608/ejabf.2014.2193
This study aimed to investigate the effect of dietary graded levels of three pre-and probiotics on the immunity and haematology of all-males mono-sex Nile tilapia fish. The experimental period was 16 weeks after 2 weeks adaptation period. In the pathogenicity test, dietary inclusion of Aqua Superzyme at 0.01% of the diet, Garlen Allicin at 0.01% of the diet, and Diamond V (XPC) at 0.5% of the diet, generally reduced the mortality rate (%) and therefore increased the survival rate (%). Yet, the only significant (P<0.05) positive effect was due to Aqua Superzyme at 0.01% of the diet in general and after 48h whereas the other supplements did not significantly (P>0.05) affect the pathogenicity. The comparisons among substances and their levels clear that the best survival was occurred in the treatment 1:1, i.e the fish group fed Aqua Superzyme (at 0.01% of the diet) diet. The haematological parameters' values increased significantly (P<0.05) by using Aqua Superzyme, particularly at 0.01% of the diet; Garlen Allicin, particularly at 0.01% of the diet; and Diamond V (Original XPC), particularly at 0.4% of the diet). Yet, the overall significantly (P<0.05) best valus for all tested parameters among additives and their levels was that contained Aqua Superzyme at 0.02% of the diet. So, it is recommended to supply Nile tilapia's diet with the prebiotic Aqua Superzyme at 0.01-0.02% of the diet to improve the immunity system of the fish.
Nile tilapia,pathogenicity,haematology (Hb,RBCs,PCV% and WBCs)
https://ejabf.journals.ekb.eg/article_2193.html
https://ejabf.journals.ekb.eg/article_2193_a04f89f0e08db824914980c268cae85e.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
18
1
2014
01
01
Effect of stocking density in polyculture system on growth performance of cultured Fish and productivity in Earthen Ponds.
61
81
EN
Nabil
Abdel- Hakim
Department of Animal Production, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt.
Ahmed
Zaglul
Department of Animal Production, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt.
Mahmud
Awad
General Authority for Fish Resources Deveolopment Kafr El-Sheirh
10.21608/ejabf.2014.2194
The present study was carried out in a private fish farm located in the area of Tolompat 7, Riyad, Kafr El- Sheikh Governrate, Nile Delta district, Egypt. The study aimed to evaluate the effect of stocking density of different fish species on growth performance, feed, conversion, chemical body composition and economic efficiency. Three stocking densities in replicates each of one Feddan area were arranged in the present study. The first stocking density was the traditional stocking density in the study area (16000 fish/Feddan) (T1) (12000 Nile Tilapia Oreochromis niloticus + 3000 Tobara Liza ramada + 1000 Bouri Mugel cephalus). The second treatment included the stocking density 19200 fish/Feddan (T2 14400 Ttilapia + 3600 Tobara + 1200 Bouri) and the third (T3) treatment was stocked with 22400fish /feddan (16800 Tilapia + 4200 Tobara + 1400 Bouri). Each treatment was carried out in replicates each of one Feddan (4200m2) area and study lasted 24 weeks from the start. The initial weights of the experimental fish were 25g, 10g. and 15g. for Tilapia; Tobara and Bouri, respectively. The experimental fish were fed on a diet containing 25% protein at a rate of 3% & the fish biomass daily. The diet was offered in two portions at 10.00am.and 2.00 pm daily then fish samples were taken from each pond every 15 days to calculate the feeding rate for the next period. Water quality parameters were determined every two weeks. Water dissolved oxygen and pH were determined twice weekly. Results obtained are summarized in the following:<br />1- Averages of final weights of Tilapia decreased significantly with each increase in the stocking density and the same trend was observed with total weight gain and relative growth.<br />2- Final body weight, total weight and gain and relative growth rate of Bouri and Tobara rate decreased significantly with each increase in the stocking density.<br />3- Stocking density released significant differences in dry matter, protein NFE and gross energy contents of tilapia whole bodies. On the other hand, stocking density released significantly differences in whole body composition parameters of Bouri and Tobara.<br />4- Feed conversion ratio (kg. of feed required for each kg. /gain in weight) increased with each increase in the stocking density.<br />5- Water quality parameters including water temperature, dissolved oxygen, pH value, total ammonia, nitrate, nitrite and salinity, were within the permissible levels required for the tested species.<br />6- Total fish yield kg. /feddan increased significantly with each increase in the stocking density.<br />7- Percentages of net returns over costs for T1, T2 andT3 were 50.59, 44,97, and 12.92%,respectively indicating the most profiTable stocking density of tilapia and Bouri and Tobara lie between 16000 and 19200 fish /feddan. Based on the obtained results, a stocking density of 16000 fish /feddan (1200 tilapia + 300 Tobara + 1000 Bouri) is recommended in the study area for higher profit. Increasing thestocking density may require frequent pond water exchange and intensive water aeration and higher feeding rates.
stocking density,Nile tilapia, Mullet species growth parameters, pond fish yield
https://ejabf.journals.ekb.eg/article_2194.html
https://ejabf.journals.ekb.eg/article_2194_e3030675963a44fd3fe9568e2ba481f2.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
18
1
2014
01
01
Impact of the valley flooding upon the abundance and diversity of the reef fishes in Wadi El-Gemal protected area, Red Sea, Egypt
83
95
EN
Mohamed
Abu El-Regal
Marine Science Department, Faculty of Science, Port Said University, Egypt
10.21608/ejabf.2014.2195
This study was conducted in Wadi El-Gemal using visual census technique in order to study the composition of the fish community in the area and to evaluate the effect of the flooding drain on the abundance and diversity of reef fishes. The area in front of the flooding drain was divided into three transects according to their proximity to the drain. Each transect was divided into three zones; reef flat, reef edge and reef slope and fishes were counted at each zone. A total of 4388 fish constituting 94 species in 23 families of coral reef fish were recorded. The highest number of species was recorded in the reef slope of transect two (85), while the lowest was present at the reef flat (11). The highest number of individuals was recorded in the reef slope, where 1002 fish were counted, while the lowest number was in the first<br />transect (86). There were no great seasonal variations in diversity but slight differences were noted in abundance of fishes. The highest diversity was observed in the fall with 88 species and the richness was 11.9 while the lowest was in winter with 82 species and the richness was 10.7. Number of species as well as number of fish<br />increases as the distance from the mouth of the valley increases
reef fish,Red Sea,Wadi El-Gemal,diversity
https://ejabf.journals.ekb.eg/article_2195.html
https://ejabf.journals.ekb.eg/article_2195_81a8ff69074ef7a0e607e79e51442aed.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
18
1
2014
01
01
Pawpaw (Carica papaya) seeds powder in Nile tilapia (Oreochromis niloticus) diets: 2 Liver status, sexual hormones and histological structure of the gonads
97
113
EN
Fathy
Khalil
Animal Production Dept., Fac. Agric., Mansoura Univ., Mansoura, Egypt
Fayek
Farrag
Animal Production Dept., Fac. Agric., Mansoura Univ., Mansoura, Egypt
Ahmed
Mehrim
Animal Production Dept., Fac. Agric., Mansoura Univ., Mansoura, Egypt
Mohamed
Refaey
Animal Production Dept., Fac. Agric., Mansoura Univ., Mansoura, Egypt
10.21608/ejabf.2014.2196
The present study was carried out to evaluate the ability of using Pawpaw (Carica papaya) seeds powder (PSP) as natural reproductive inhibitor for Nile tilapia (Oreochromis niloticus) to control their propagation. The experiment was divided into two periods; the first was the treating period (1st) during which the Nile tilapia fry were treated with PSP for 71 days and the second was the rearing period whereas the Nile tilapia fingerlings (2nd) obtained from the first period until sexual maturation stage for 84 days. The PSP was added to the basal diet at levels of 0, 2, 4, 6 and 8 g/kg diet for 15, 30, 45 and 60 days, different periods (1st). Results of the 2nd period showed that there were no significant (P ≥ 0.05) effects on total cholesterol, testosterone and progesterone hormones among all periods; however the testosterone and progesterone hormones were decreased (P ≤ 0.01) by increasing levels of PSP. Also, the high levels of PSP (4, 6 and 8 g / kg diet) and increasing exposure periods (30, 45 and 60 day) caused obvious histological alternations of testes and ovaries of O. niloticus which reduce the fertility of both males and females. Consequently, it could be recommended that the effectiveness use of PSP as a natural reproductive inhibitor for O. niloticus.
Nile tilapia,Pawpaw seeds powder,Sexual hormones,gonads histology
https://ejabf.journals.ekb.eg/article_2196.html
https://ejabf.journals.ekb.eg/article_2196_a34ef11c3a3c5d566459f1fa20a96f9f.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
18
1
2014
01
01
A Study of the Physico-Chemical Characteristics of Raw, Filtered, and Treated Water at A Water Treatment Plant in Shebin El-Kom, Egypt.
115
125
EN
Elsayed
Khallaf
0000-0003-1035-2280
Zoology Dept., Faculty of Science, Minofia University, Egypt
ekhallaf@yahoo.com
Mansour
Galal
Zoology Dept., Faculty of Science, Minofia University, Egypt
S.
El-Sbbagh
Botany Dept, Faculty of Science, Minufeya University, Egypt
Noura
Nabet
Zoology Dept., Faculty of Science, Minofia University, Egypt.
10.21608/ejabf.2014.2197
Potable water is a necessity for safe and better quality. In Egypt, this is no exception, and consequently, this study investigated the physico-chemical properties of raw, and treated water in Shebin El-Kom Water Treatment Plant. As indicated, here in this study, a number of parameters, namely Ammonia, Nitrates, and Chlorides, were observed to occur in water after treatment. Furthermore, Chlorides, Iron, Nitrites, TDS, Mn, and Mg, might occur in treated water at certain times of the year. Those parameters proved to be indicator for physico-chemical characteristics. Accordingly, a recommendation is presented.
physico-chemical parameters,potable water,Water-treatment
https://ejabf.journals.ekb.eg/article_2197.html
https://ejabf.journals.ekb.eg/article_2197_87396737a0cf65c3fbdfa05d8966d789.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
18
1
2014
01
01
Population analyses of microfauna at a Water treatment Plant at Shebeen Alkoom, Minufeya, Egypt.
127
138
EN
Mansour
Galal
Zoology Dept, Faculty of Science, Minufeya University, Shebeen Alkoom, Egypt.
Elsayed
Khallaf
0000-0003-1035-2280
Zoology Dept, Faculty of Science, Minufeya University, Shebeen Alkoom, Egypt.
ekhallaf@yahoo.com
S.
El-Sbbagh
Botany Dept, Faculty of Science, Minufeya University, Shebeen Alkoom, Egypt
Noura
Nabet
Zoology Dept, Faculty of Science, Minufeya University, Shebeen Alkoom, Egypt.
10.21608/ejabf.2014.2198
Safe Drinking water is a priority for human health all over the world. Accordingly, the microfauna of raw, filtered, treated, and tap water were investigated in this study. The results proved the efficiency of the Water Plant, but slight occurrence of non-pathogenic bacteria in tap water, indicated the necessity to renovate the distribution system.<br />Most of the physico-chemical characters are within the standards for drinking water apart from phosphate, nitrate, iron and manganese. Raw water samples only were positive for E. coli, T. & F. coliform, Salmonella and Shigella. This could be referred to the illegal discharge of sewage and other organic pollutants into the water source. Sixty one protozoan genera were identified only in raw water which can be attributed to the influence of chlorination during water treatment. Ciliated protozoan densities proved seasonal variation with highest values during Autumn. Protozoan monthly densities showed significant correlations with certain physical and chemical parameters. Therefore ciliates are considered as bio-indicators for pollution in various aquatic habitats. Simultaneously, rotifers can be used to indicate the performance level of certain stages of water treatment process as they showed significant correlations with different ecological factors.
Fecal bacteria,protozoa,Water-treatment
https://ejabf.journals.ekb.eg/article_2198.html
https://ejabf.journals.ekb.eg/article_2198_773a1d152eaadb20f4ee501ba8ad6bc7.pdf
The Egyptian Society for the Development of Fisheries and Human Health (ESDFHH)
Egyptian Journal of Aquatic Biology and Fisheries
1110-6131
2536-9814
18
1
2014
01
01
Reproductive Biology of little tunny, Euthynnus alletteratus (Rafinesque 1810) in the Eastern Coast of Alexandria, Egypt
139
150
EN
Hussain
Mohamed
Arab Academy for Science and Technology & Maritime Transport, Alexandria, Egypt
Alaa Eldin
El-Haweet
Arab Academy for Science and Technology & Maritime Transport, Alexandria, Egypt
Essam
Sabry
Arab Academy for Science and Technology & Maritime Transport, Alexandria, Egypt
10.21608/ejabf.2014.2199
Reproductive biology of Euthynnus alletteratus was described based on 628 fishes that were collected from Abu Qir landing site between October 2006 and September 2007. Only 146 specimens were sexually distinguished (102 females, 44 males) and the others were immature. The sex ratio was estimated as M: F 1:2.3. Size at first sexual maturity was estimated as 42cm. Spawning season was investigated based on monthly observation of gonadal maturity stages and gonad-somatic index (GSI). The spawning season extends from June to August with a highest GSI value in June.The fork length (FL)–gutted weight (GW) relationship was estimated as GW=0.052 FL2.639 for combined sexes. Condition factor (K) was calculated using the gutted weight of all samples (regardless of sex) with an average of 1.3. Management plan is important to overcome the high percentage of immature fishes in the catch off Alexandria water. Extending closed season to July and increasing the length at capture to 44cm are important for enhancing the chance of spawning at least once during its life.
Euthynnus alletteratus,Reproduction,Spawning season,Condition factor,alexandria,Egypt
https://ejabf.journals.ekb.eg/article_2199.html
https://ejabf.journals.ekb.eg/article_2199_3abb8c2a918c296fda8e05bab1433338.pdf