scholarly journals Comparative Anatomy of Labyrinth and Gill of Catfish (Clarias gariepinus) (Burchell, 1822) and Snakehead Fish (Channa striata) (Bloch, 1793)

2018 ◽  
Vol 7 (2) ◽  
pp. 39-43
Author(s):  
Ina Karlina ◽  
Muhammad Ja’far Luthfi
Keyword(s):  
Blood Vessels ◽  
Fish Species ◽  
Respiratory System ◽  
Comparative Anatomy ◽  
Clarias Gariepinus ◽  
Low Oxygen ◽  
Gill Structure ◽  
Channa Striata ◽  
Hematoxylin Eosin ◽  
Paraffin Method

Dumbo catfish (Clarias gariepinus) and Gabus (Channa striata) have additional organ respiratory system structures in the gills, called labyrinth. This organ is a tool for fish to take oxygen directly from the air so that it can live in low oxygen habitats. Both fish have differences at the Order level. Catfish is an order of Siluriformes as Gabus is an order of Perciformes. The purpose of this study was to distinguish the anatomy and histology of the gill structure and labyrinth in both fish. The macroanatomy observation was conveyed by dissection to determine the gill topography in the two fish species. Histology preparations were carried out using the paraffin method and using Hematoxylin-Eosin (HE) staining that showed in the labyrinth organ there were many blood vessels to bind oxygen then distributed to all parts of the fish's body.

scholarly journals Anatomical and Histological Structure of Black Pomfret Fish Kidney (Formio niger)

2017 ◽  
Vol 1 ◽  
pp. 71-74
Author(s):  
Nurul Safitri Apriliani
Keyword(s):  
Growth Rate ◽  
Fish Species ◽  
Economic Value ◽  
Histological Structure ◽  
Lymphoid Tissues ◽  
The Many ◽  
Fish Kidney ◽  
Hematoxylin Eosin ◽  
Paraffin Method ◽  
Fast Growth Rate

Black pomfret is one of the many fish species found in the southern sea. Pomfret has high economic value and is an active swimmer that has fast growth rate, resistant to disease, and easy to maintain. The purpose of this research was to know the structure of anatomy and histology of black pomfret’s kidney. Histological slides were made using paraffin method and stain with Hematoxylin-Eosin. The results showed that kidney of black pomfret have a soft texture, and the colour is red degradation brown. Histologically, the kidney is found a glomerolous, tubules and lymphoid tissues.

scholarly journals Comparative Anatomy and Histology of Black Pomfret (Formio niger) and Nile tilapia (Oreochromis niloticus) Kidney

2017 ◽  
Vol 6 (1) ◽  
pp. 9
Author(s):  
Nurul Safitri Apriliani ◽  
Muhammad Jafar Luthfi
Keyword(s):  
Oreochromis Niloticus ◽  
Lymphoid Tissue ◽  
Nile Tilapia ◽  
Comparative Anatomy ◽  
Distal Tubule ◽  
Histological Structure ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Habitat Differences ◽  
Hematoxylin Eosin ◽  
Paraffin Method

Black pomfret and nile tilapia are belonging to order Perciformes. Both fish are live in different habitat. Black pomfret is marine water whereas nile tilapia is in freshwater. The purpose of the study was to determine anatomy and histology of the kidneys structures in both fishes. Histological preparations were done using paraffin method, with <em>Hematoxylin-Eosin</em> (HE) staining. The results, showed that Black pomfret and nile tilapia have y-shape kidney. Nile tilapia has darker red colour and softer texture than black pomfret kidney. Histologically, black pomfret and nile tilapia kidneys have a distal tubule, proximal tubule, glomerulus and lymphoid tissue. Glomerular diameter of nile tilapia (69,22 µm) was larger than pomfret (61,25 µm). It can be concluded that differences between anatomical and histological structure of kidney are affected by habitat differences.

Studi Histokimia Usus Biawak Air (Varanus salvator bivittatus) (Reptil: Varanidae)

2019 ◽  
Author(s):  
Mahfud Mahfud ◽  
Ernawati
Keyword(s):  
Tissue Sample ◽  
Histological Section ◽  
Tissue Perfusion ◽  
Intestinal Wall ◽  
Biological Information ◽  
Suitable Habitat ◽  
Monitor Lizard ◽  
Varanus Salvator ◽  
Hematoxylin Eosin ◽  
Paraffin Method

Biological information, behaviour and suitable habitat of water monitor was very less in order to support its maintenance management and breeding efforts. One of important information is the information of digestive tract, particularly the information about the structure of intestine tissue of water monitor. Sample in this research was intestine organ of water monitor. The animal was anesthetized, exanguinated, and fixed in paraformaldehyde 4% by tissue perfusion method. The intestine tissue sample for histological section with paraffin method was cutted with 3-4 μm thick and coloured with hematoxylin eosin (HE). Observation were performed to the structure of intestine histology. The results was analysed descriptively and presented in figures. Monitor lizard intestine consist of small intestine and large intestine. The small intestinal wall was observed similar to jejunum and ileum. The large intestinal wall was composed of transitional ephytelia and connective tissue. However, the ephytelial layer in this tissue was composed of transitional ephytelia that similar to vesica urinaria and there are no villi.

Proximate composition of male and female African catfish (Clarias gariepinus) and tilapia (Tilapia zilli) in Jega river, Kebbi state, Nigeria

2020 ◽  
Vol 01 (02) ◽  
pp. 28-35
Author(s):  
W. M. Namaga ◽  
B. Yahaya ◽  
M. A. Salam
Keyword(s):  
Protein Content ◽  
Fish Species ◽  
Lipid Content ◽  
Proximate Composition ◽  
Clarias Gariepinus ◽  
Fibre Content ◽  
African Catfish ◽  
Male And Female ◽  
Juvenile Female ◽  
Significant Difference

Fish is highly nutritious, tasty, and easily digestible. It is much sought after by a broad cross-section of the world’s population, particularly in developing countries as it provides the cheapest protein source. Nigeria is blessed with numerous inland freshwater rivers and lakes scattered all over the country. This freshwater habitat consists of many species of fish that have successfully dominated all niches over time and have for many reasons remained unstudied. The situation concealed a lot of scientific information particularly on food security and safety to the inmates and the country at large. Jega River which transcended many States in the North-Western part of Nigeria to open into the river Niger is one of such rivers largely uncared for, study-wise. African catfish (Clarias gariepinus) and Tilapia (Tilapia zillii) have been wisely selected for the present proximate composition studies. The juveniles of these fishes were purchased from local fishermen in Mariner Waje landing site of the river which flows by Jega town, a local government area in Kebbi State, Nigeria. For the study, the methodology approved by the Association of Official Analytical Chemists (AOAC) was used to determine the proximate composition of the fishes. The highest percentage crude protein content of 49.18 ± 0.30% was observed in juvenile female C. gariepinus; while the lowest protein content of 39.22± 0.50% was observed in juvenile male T. zilli. The highest percentage lipid content of 11.75± 1.50% was observed in juvenile female tilapia; while the lowest percentage lipid content of 6.25± 0.29% was observed in male African catfish. The highest percentage fibre content of 4.00 ± 0.29% was observed in male and female C. gariepinus, while the lowest percentage fibre content of 0.75± 0.29% was observed in male tilapia. There were variations (p< 0.05) when the protein and lipid contents of both the species were compared with each other. There was also a significant difference (p< 0.05) when the carbohydrate contents were compared between the fish species, but there was no significant difference (p > 0.05) when the fibre content was compared within the species. The analyses showed that both the male and female fish species studied had high protein contents.

scholarly journals Heavy Metal Pollution in the Receiving Environment of the University of Dar Es Salaam Waste Stabilization Ponds

2013 ◽  
Vol 4 (1) ◽  
Author(s):  
Adrehem J. Nziku ◽  
Lucy Namkinga
Keyword(s):  
Heavy Metal ◽  
Fish Species ◽  
Oreochromis Niloticus ◽  
Clarias Gariepinus ◽  
Dar Es Salaam ◽  
Waste Stabilization Ponds ◽  
Waste Stabilization ◽  
Safe Limits ◽  
The University ◽  
Concentration Levels

The aim of this study was to examine the availability, concentration levels and bioaccumulation of heavy metals namely; Mercury (Hg), Cadmium (Cd), Lead (Pb), Zinc (Zn) and Molybdenum (Mo) in the waste Stabilization Ponds of the University of Dar es Salaam. A total of 135 samples were analyzed, out of which 27 were samples of water, 27 of sediments and 81 samples of fish tissues. Two types of fishes were used namely; Oreochromis niloticus and Clarias gariepinus. Heavy metal concentration varied significantly between water, sediment, fish species and tissues. Hg, Cd, Zn and Mo concentrations in water and sediment were within WHO safe limits. However, Pb in water and Cd, Pb and Zn concentrations in sediments were found to be above WHO standards (p<0.05). Concentration levels for Cd, Pb and Zn were above acceptable levels in Oreochromis niloticus while Hg was found to be within safe limits in both fish species (p<0.05). Molybdenum was found to be below the detection limits in Oreochromis niloticus. While Cd was not detected, Pb, Zn and Mo were found highly accumulated in Clarias gariepinus (p<0.05). Oreochromis niloticus accumulated metals in the increasing order from dorsal muscles < gills < liver while Clarias gariepinus accumulated metals in the decreasing order from dorsal muscle < gills < liver.Public awareness on the dangers to which fish consumers from the site are exposed is highly suggested and purposeful mitigation measures of stopping all fishing activities in these sites is needed, also animal feeding around the ponds should be forbidden.

scholarly journals Proximate composition of commercially important fish species in southern Gulf of Lake Tana, Ethiopia

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Hirut Geremew ◽  
Melesse Abdisa ◽  
Goraw Goshu
Keyword(s):  
Fish Species ◽  
Proximate Composition ◽  
Energy Content ◽  
Addis Ababa ◽  
Clarias Gariepinus ◽  
Genital Papilla ◽  
Lake Tana ◽  
Fish Samples ◽  
Landing Sites ◽  
Gross Energy

The aim of the study was to determine the proximate composition of each sex of Oreochromis niloticus, Clarias gariepinus and Labeobarbus intermedius fish species from the southern Gulf of Lake Tana, Ethiopia. The fish samples were collected during the dry season of 2014 from the three fish landing sites, i.e., Bata, Micheal and Giorgis, where local fishermen sell their catches. Species were identified via morphological examination and color. Sexes were identified by observing genital papilla and gonads after dissection. After measuring weight and length of young fish species, fish weighing 201-310 g were selected for the study. A total of 72 fish, eight and four fish per species and sexes were selected, respectively, for each site. The sample size was determined using “resource equation" method. Only edible fillet was labeled and transferred to plastic bags according to species and sex. Then the sample was transported for proximate analysis to Addis Ababa Food Science and Nutrition laboratory using icebox at about 4 °C. Fish sample composites were prepared by taking the fish samples from the three fish landing sites for each sex and species. Samples were thawed at room temperature and oven-dried at 60 °C for 72 h, then ground into a fine powder. Proximate composition was determined following the procedure of Association of Official Analytical Chemists (AOAC). Data analysis was conducted using analysis of variance (ANOVA). Nutrient content significantly varied among fish species; more protein was recorded from O. niloticus and fat from L. intermedius. Also, fat, ash and gross energy content were different between sexes; female fish contained significantly more fat and gross energy than males. In conclusion, consumers are advised to consume these species to obtain required nutrients.

scholarly journals Lung Histopathology of Laying Hens Infected by Colibacillosis in the Animal Cages Experiments of the Disease Investigation Center 6, Denpasar, Bali

2019 ◽  
Vol 3 (2) ◽  
pp. 25
Author(s):  
Kadek Ayu Trisna Yanti ◽  
Iriani Setyawati ◽  
Ni Putu Adriani Astiti
Keyword(s):  
Laying Hens ◽  
Histopathological Examination ◽  
Inflammatory Cells ◽  
Gallus Gallus Domesticus ◽  
Directorate General ◽  
Lung Histopathology ◽  
Live Stock ◽  
Hematoxylin Eosin ◽  
Paraffin Method ◽  
Neutral Buffer Formalin

This study aimed to determine the lungs histopathology of laying hens (Gallus gallus domesticus) at the Animal Cage Experiments in the Disease Investigation Center 6, Directorate General of Live Stock (DIC-6 DGLS), Denpasar, Bali, which died from colibacillosis infection. Sample of lungs were cut transversely then put into 10% of Neutral Buffer Formalin, then processed histologically by paraffin method and stained with Hematoxylin-Eosin. Observation under microscope (magnification 100x and 400x) was done for histopathological examination. Laying hens died from colibacillosis infection showed that their lungs were infected by colibacillosis, and there were found 62.50% of necrosis, 75% of inflammatory cells infiltration and 80% of hemorrhage in the lungs.

scholarly journals Assessment of Levels of Some Metals in Water and Fish from Jos, Plateau State, Nigeria

2019 ◽  
pp. 1-11
Author(s):  
J. D. Dabak ◽  
L. J. Dabal ◽  
A. G. Jakwa ◽  
E. A. Ajiji
Keyword(s):  
Fish Species ◽  
General Pattern ◽  
Clarias Gariepinus ◽  
World Health Organisation ◽  
Water Sources ◽  
The Body ◽  
World Health ◽  
Fish Samples ◽  
Toxicity Risk ◽  
Plateau State

Aim: This study was designed to assess the levels of chromium (Cr), manganese (Mn), cobalt (Co) and nickel (Ni) in water and fish to monitor the toxicity risk of consuming these fish. Place and Duration of Studies: The water and fish samples were obtained from Farin gada river, Liberty Dam, Dahwol-Tohort and Diye-Tohort mining ponds, all within Jos Metropolis, Plateau State, Nigeria, between March and April, 2018. Methodology: Water and six fish species samples were collected from four different locations, digested and analysed using Buck Scientific Atomic Absorption Spectrophotometer, model 210VGP. Results: Farin gada river had all the four metals studied in varying concentrations in the following order Mn>Ni>Co>Cr with Mn having the highest mean concentration of 0.4133±0.0100 mg/L. The concentrations of the metals in the other three sources were in the order of Ni>Co>Cr with Mn not detected. Cr also was not detected in Lamingo Dam. The concentrations of Mn and Ni in all the water sources were higher than the World Health Organisation (WHO) maximum permissible limits of 0.05 mg/L and 0.06 mg/L respectively. Petrocephalus bovei recorded the highest mean concentrations of Mn and Ni, while Co was highest in Clarias gariepinus species. The concentrations of these metals in the head, body and gills of the fish species showed that the head of Petrocephalus bovei species had the highest concentrations of all the metals except chromium. Fish species from other water sources exhibited the same general pattern of Head˃gill˃body except Co which was found to accumulate more in the body than in other parts of the fish. Conclusion: The results showed that there was biomagnification of these metals from water to the fish as the concentration of the metals in the fish far exceeded those of the water sources from which they were obtained and Petrocephalus bovei species has the highest potential to biomagnified all the metals.

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