scholarly journals Intraspecific morphological variation between cultured and wild Clarias gariepinus (Burchell) (Clariidae, Siluriformes)

2015 ◽  
Vol 23 (1) ◽  
pp. 53-61 ◽  
Author(s):  
Shola G. Solomon ◽  
Victor T. Okomoda ◽  
Abel I. Ogbenyikwu
Keyword(s):  
Clarias Gariepinus ◽  
Morphometric Parameters ◽  
African Catfish ◽  
Meristic Counts ◽  
Fish Samples ◽  
Cultured Fish ◽  
Morphological Differences ◽  
And Cluster Analysis ◽  
The University ◽  
Intraspecific Morphological Variation

Abstract This study was designed to evaluate morphological differences between cultured and wild African catfish, Clarias gariepinus (Burchell). Fish samples were collected from the lower Benue River (axis in Makurdi), while cultured fish were obtained from the University of Agriculture Makurdi research farm. The results revealed significant sex-related variation in the fish from different environments. Significant differences were observed in all morphometric parameters measured and in three of the five meristic counts recorded. Discriminant analysis and cluster analysis of morphometric parameters showed a high divergence among the populations, hence the tested fish samples were grouped into respective environments by sex. The meristic count, however, overlapped broadly showing no divergence among the populations. The morphometric differences between the cultured and wild African catfish could have been linked to genetic differences or environmental factors or a combination of both factors.

Morphological differentiation in African catfish (Clarias gariepinus) from three different populations in Nigeria

2021 ◽  
Vol 16 (1) ◽  
pp. 13-20
Author(s):  
Popoola Omoniyi Michael ◽  
Olagunju Oluwatosin Olubunmi
Keyword(s):  
Clarias Gariepinus ◽  
Morphological Differentiation ◽  
Principal Component ◽  
Individual Species ◽  
African Catfish ◽  
Morphometric Traits ◽  
Meristic Characters ◽  
High Positive Correlation ◽  
Meristic Counts ◽  
Major Cluster

AbstractIntraspecific morphological variation in Clarias gariepinus was studied in three water bodies. Twenty-three morphometric characteristics and seven meristic were used. Principal component (PC) analysis showed that morphometric traits of River Osun and Ogbese were somewhat related while that of Aago showed no relatedness, there were no difference among the meristic counts of the populations. PC1, and PC2 accounted for 93% and 4% of the variation observed in the populations. High positive correlation was observed in Aago (r = 0.872, b = 2.10) and Ogbese population while low correlation and negative allometric growth (r = 0.425 and b= 1.38) was observed in Asejire population. Cluster analysis revealed that three studied populations are separated into two major clusters, with samples from Asejire and Ogbese population found within the same cluster but different sub- clusters, similarly some of samples from Aago were also within the same cluster while samples 10 were found on a separate and major cluster. The study confirms the variability among individual species within each population, indicates the presence of genetic diversity among the populations of C. gariepinus and the Pre-anal distance and dorsal fin ray count could be employed in the identification of populations of catfish. Key words: morphometric traits, meristic characters, populations, allometric

Impact of Ogun River pollution on antioxidants and proximate composition of African catfish (Clarias gariepinus)

2019 ◽  
Vol 46 (3) ◽  
pp. 163-184
Author(s):  
B. O. Onunkwor ◽  
T. O. Akinpelu ◽  
O. J. Oladipupo ◽  
R. N. Ugbaja ◽  
O. J. Olaoye ◽  
...  
Keyword(s):  
Proximate Composition ◽  
Clarias Gariepinus ◽  
Chemical Properties ◽  
Oxygen Demand ◽  
Control Fish ◽  
Average Weight ◽  
African Catfish ◽  
Fish Samples ◽  
The Impact ◽  
Ogun River

Most rivers in Nigeria are polluted without conscious efforts to abate ensuant consequences. Thus, Clarias gariepinus, an aquatic commercial food from Ogun River, Nigeria, was studied to investigate the impact of pollution on antioxidants and proximate composition. During the rainy season, 50 C. gariepinus (average weight 426.53 ± 24.40g and length 37.73 ± 0.95cm) were site sampled, 10 from each of Ago-Odo, Ago-Ika, Oke-Sokori, and Quarry along Ogun River course. Ajegunle-Adao cultured pond, served as control. The parameters assayed for included: some heavy metals and physico-chemical properties of sampled water, antioxidants and proximate composition of the fish samples. Physicochemical parameters of river studied showed that temperature of all sites ranged from 26 to 29°C, pH: 6.9 to 7.8, dissolved oxygen: 9.5 to 21.6, biochemical oxygen demand: 3.60 to 14.10, and chemical oxygen demand: 60 to 650. Lead (Pb) concentration ranged from 4.0 to 17.0 μg/L and cadmium (Cd): 0.0 to 6.0 μg/L. Blood Pb, Cd, activities of: superoxide dismutase, catalase, glutathione-S-transferase, plasma xanthine oxidase, and lipid peroxidation level of fish samples from Ago-Ika were most significantly (p < 0.05) high, with significant (p < 0.05) lowest reduced glutathione concentration amongst the samples from polluted sites when compared to control fish. Proximate analysis showed that the fish samples from Ogun River had significantly (p < 0.05) lower protein, fat contents, and higher nitrogen-free extract while Ago-Ika, Oke-Sokori and Quarry sites had significantly (p < 0.05) lower moisture, ash and fibre contents when compared with control. It can be concluded that the impact of pollution induced oxidative stress and significantly diminished the nutritional value of C. gariepinus from Ogun River.

scholarly journals Skeletal Deformities in Cultured Juvenile African Catfish Clarias gariepinus (Burchell, 1822)

2021 ◽  
Vol 12 (1S) ◽  
pp. 198-203
Author(s):  
Nurul Nasrin Mohd Yusof Zaki ◽  
Siti Zahirah Zaki Halim ◽  
Ha Hou Chew ◽  
Connie Fay Komilus ◽  
Nguang Siew Ing
Keyword(s):  
Bone Structure ◽  
Juvenile Fish ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Farmed Fish ◽  
Alizarin Red ◽  
Skeletal Deformities ◽  
Cultured Fish ◽  
Juvenile Stages ◽  
Community Centre

Skeletal deformities in cultured fish are known worldwide and it had affected the survival, growth and appearance of the fish which contribute to production loss. Clarias gariepinus is known as number one farmed fish in Malaysia. C. gariepinus also effected in these deformities especially in cultured species. The objectives of this study are to identify the skeletal deformities that occur in juvenile stages and to compare the bone structure between the normal and deformed fish. A total of 50 juveniles’ fish were collected from Aquaculture Extension and Community Centre Machang, Kelantan. The juvenile was measured before undergo staining process. The fish were starved for one day then fixed in 70% ethanol for two weeks. The fish were then stained with alizarin red S for cartilage and Alcian blue for bone. The specimens were photographed in order to observe the deformities. The data showed only 13.0% juveniles have skeletal deformities, 10.9% with lordosis and 2.2% scoliosis. The cause of the deformities may be due to the heterogenous growth but other factors might also contribute to the problem. As the conclusion, the skeletal deformities observed in juvenile C. gariepinus were detected with the whole-mount staining method ranged from size 7.3 and 26.0 cm in total length. This study shows there is heterogenous growth rearing at low percentage even from skilled farm. Further study should concentrate on hidden factors that affected the deformity rate and mineralization of the juvenile fish.

scholarly journals Interrelationship between some morphometric parameters and bodyweight of tank-based cultured African catfish (Clarias gariepinus Burchell, 1822)

2020 ◽  
Author(s):  
Ikenna Onyekwelu ◽  
Chinenye Chukwuemeka Anyadike ◽  
Nelson Ike Ossai ◽  
Oji Achuka Nwoke ◽  
Emeka Leonard Ndulue
Keyword(s):  
Clarias Gariepinus ◽  
Morphometric Parameters ◽  
African Catfish

Natural origins of off-flavours in fish related to feeding habits

2007 ◽  
Vol 55 (5) ◽  
pp. 301-309 ◽  
Author(s):  
Zs.Gy. Papp ◽  
É. Kerepeczki ◽  
F. Pekár ◽  
D. Gál
Keyword(s):  
Common Carp ◽  
Fish Species ◽  
Feeding Habits ◽  
Silver Carp ◽  
Clarias Gariepinus ◽  
Human Detection ◽  
Aquatic Systems ◽  
Ctenopharyngodon Idella ◽  
African Catfish ◽  
Fish Samples

The objective of our study was to survey the accumulated 2-methylisoborneol (MIB) and geosmin (GSM) in fillets of five important farmed fish species in Hungarian aquaculture in relation to MIB and GSM concentrations in water and sediment in the aquatic systems where they were raised: (the planktivorous silver carp (Hypophthalmichthys molitrix), the herbivorous grass carp (Ctenopharyngodon idella), the bottom-feeding omnivorous common carp (Cyprinus carpio), the omnivorous tilapia (Oreochromis niloticus) and the carnivorous African catfish (Clarias gariepinus)). Water, sediment and fish samples were collected from different experimental aquatic systems which included a combined aquaculture–algae (CAA) system, effluent-fed fishponds, a pond recycling system and a traditional fishpond. MIB and GSM contents were extracted with distillation-headspace solid-phase – microextraction (SPME) and extracts analysed by GC-MS. Results showed that off-flavour contents in fish fillets were related to the feeding habits of the studied fish species. Higher GSM concentrations were found in the fillet of bottom-feeding common carp than in the silver carp or African catfish in all studied aquatic systems. Usually, low GSM concentrations were detected in the water of fishponds but sometimes the levels of this odour compound in carp fillet were well above the limits of human detection. This suggests that the off-flavour tainting of common carp may originate from the sediment or benthic algal/actinomycete sources. Negligible MIB levels were found in all samples in all of the studied aquatic systems.

scholarly journals Effect of Moringa leave Marinade on aflatoxin in fresh and smoked African catfish (Clarias gariepinus)

Food Research ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 185-194
Author(s):  
E.O. Oni ◽  
M.C. Adetunji ◽  
D.D. John-Babatunde ◽  
A.M. Omemu
Keyword(s):  
Clarias Gariepinus ◽  
Storage Period ◽  
Aflatoxin Contamination ◽  
African Catfish ◽  
Fresh Fish ◽  
Smoked Fish ◽  
Fish Samples ◽  
Aflatoxin Concentration ◽  
Bacteria And Fungi ◽  
And Control

This study aimed at evaluating the effect of Moringa leaves Marinade (MOM) on aflatoxin contamination of Clarias gariepinus. A total of thirty fresh fish samples (n = 30) grouped into four; Fresh fish without smoking and storage, smoked fish +1% and 2% Moringa oleifera Marinade (MOM) respectively and Control (0% MOM) were subjected to microbiological and HPLC analysis while storing for 0-3 months. Mean CFU/g of 2.8 and 3.1 x 102 CFU/g for bacteria and fungi were recovered, respectively. Furthermore, four bacteria and fungi genera each of which Aspergillus spp. was the most predominant (57%) were recovered from the fishes. Aflatoxin concentration increased progressively in 0% MOM smoked fish as the storage period increased, while aflatoxin concentration reduced in the fishes treated with 2% MOM (p≥0.05). On average, between 1-40% reduction in aflatoxin concentration and increased keeping quality was enhanced with 2% MOM treatment. These findings recommend the possibility of the use of moringa leaves in the treatment of commercially smoked fish.

scholarly journals Helminthes Parasites of Clarias gariepinus in Abraka Delta State, Nigeria

2021 ◽  
pp. 15-24
Author(s):  
J. O. Onojafe ◽  
A. O. Egwunyenga ◽  
S. S. Eke
Keyword(s):  
Normal Saline ◽  
Saline Water ◽  
Clarias Gariepinus ◽  
The Body ◽  
African Catfish ◽  
Lower Prevalence ◽  
Intensity Of Infection ◽  
Fish Samples ◽  
Oil Immersion ◽  
Petri Dishes

Fish is significant as a vector of disease pathogen of human and animals. The study of the helminthes parasites of Clarias gariepinus in Abraka was carried out to investigate the occurrence, prevalence and intensity of helminthes parasites in Clarias gariepinus; and to compare the helminthes parasites burden of the wild and cultured Clarias gariepinus in Abraka fresh water. A total number of four hundred and nine (409) Clarias gariepinus were examined. Collection of fish samples was done monthly for twelve months. The external parts of each fish were examined with a hand lens for the occurrence of helminthes parasites. Portions of the muscles were also teased apart in saline water and examined under the microscope first at x 40 and later x 100 oil immersion. Organs of the body were examined separately in petri dishes containing normal saline. The different groups of parasites recovered were preserved in formaldehyde and identified using prescribed methods. Of the 409 C. gariepinus examined, 172 were infected, showing an infection rate of 42.1%. C. gariepinus from the wild had a higher prevalence of 31.1% while those from culture ponds had a lower prevalence of 11%. A total of 485 parasites were recovered, comprising of 113 trematodes and 372 nematodes which represents 23.3% and 76.7% respectively. Identified trematodes included Diplosomum sp., Macrogyrodactylus sp., and Quadriancanthus sp., while namatodes included Procamallanus sp. and an Ascarid nematode. The highest intensity of infection of 3.11 was recorded in the Ascarid nematode while the least of 1.25 came from Diplostomum sp. in C. gariepinus caught from the wild. Although, there appears to be a lack of reported cases of the occurrence of the ascarid nematode that was recovered from the muscles of C. gariepinus in literature, it is evident from this study that it is a common endoparasite of the African catfish in Abraka freshwater.

scholarly journals Phenotypic Diversities of Four Populations of Clarias Gariepinus (Siluriformes, Clariidae) Obtained from Ogun and Ondo State Waterbodies in South-Western Nigeria

2017 ◽  
Vol 51 (4) ◽  
pp. 285-294
Author(s):  
F. A. Ola-Oladimeji ◽  
J. A. Oso ◽  
T. E. Oladimeji ◽  
E. O. Idowu ◽  
K. Adeleke ◽  
...  
Keyword(s):  
Multivariate Analyses ◽  
Clarias Gariepinus ◽  
Principal Component ◽  
African Catfish ◽  
High Genetic Diversity ◽  
Ogun State ◽  
Standard Procedures ◽  
Principal Component Analyses ◽  
Ondo State ◽  
Morphological Differences

Abstract The study determined the variation in the morphological and meristic features among four populations of Clarias gariepinus Burchell, 1822 obtained from Owena Dam and River Oluwa in Ondo State and Rivers Omo and Ogbere in Ogun State, both in Nigeria. A total of ninety five (95) and one hundred and twenty (120) fish specimens collected from Ondo and Ogun states respectively were measured using standard procedures and the results were analysed using Analysis of variance and multivariate analyses. The results obtained from the ANOVA and Principal Component Analyses of Clarias gariepinus from the four populations revealed heterogeneity for most of their characters. Therefore, the morphological differences between the wild African catfish found in Ondo and Ogun state populations could be linked to genetic differences or environmental factors or a combination of both factors. Hence, this study concluded that the populations are different which could imply high genetic diversity if molecular marker techniques are employed in further studies.

Chemical assessment of Polycyclic Aromatic Hydrocarbons (PAHs) on processed Clarias gariepinus (Burchell, 1822) from different energy sources

2020 ◽  
Vol 35 (1) ◽  
pp. 67-72
Author(s):  
L.A. Agbabiaka ◽  
I.I. Adedokun ◽  
S.A. Ojukannaye ◽  
D.C. Agbai
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Clarias Gariepinus ◽  
Human Consumption ◽  
African Catfish ◽  
Processing Methods ◽  
Standard Procedures ◽  
Fish Samples ◽  
Polycyclic Aromatic ◽  
Chemical Assessment

Chemical assessment of Polycyclic Aromatic Hydrocarbons (PAHs) on processed African catfish was carried out. Fish samples were processed using charcoal, firewood and gas oven following standard procedures. Gas chromatographic analysis was employed for PAHs determination. Results showed that mean PAHs concentrations in fish samples were observed to be: 737.86ng/μl in firewood-smoked samples, 1451.82ng/μl in charcoal and 1990.23ng/μl in oven-dried fish. The highest mean concentration of PAHs was 906.93±0.01 ng/μl for pyrene from the charcoal-smoked samples. Lower molecular weight PAHs were generally dominant in tested samples. The number of PAHs ring showed significant variation (p<0.05) with respect to processing methods. Inference from the results showed that differently processed fish samples were of good quality and are suitable for human consumption. However, the charcoal processed samples appeared to be the best when considering the case of incomplete combustion of the wood during the drying process. Therefore, the use of charcoal in fish processing is hereby recommended. Also, it is suggested that fish processors be trained on the appropriate handling and processing methods to adopt in order to enhance the production of high-quality contaminants-free fish products. Keywords: Polycyclic Aromatic Hydrocarbon (PAH), anthropogenic, combustion, smoking methods, contaminants.

scholarly journals Comparative Assessment of the Nutritional Fitness of Wild and Cultured African Catfish (Clarias gariepinus)

2021 ◽  
pp. 96-106
Author(s):  
Ayandiran Tolulope Akinpelu ◽  
Ogundiran Mathew Akinloye ◽  
Ajala Olasunmbo Olumuyiwa ◽  
Opasola Olaniyi Afolabi ◽  
Olanipekun Abimbola Stephen
Keyword(s):  
Amino Acids ◽  
Proximate Composition ◽  
Wild Population ◽  
Clarias Gariepinus ◽  
Essential Amino Acids ◽  
P Value ◽  
African Catfish ◽  
Mineral Element ◽  
Significant Difference ◽  
Cultured Fish

The nutritional qualities of wild and cultured Clarias gariepinus from Oba Reservoir, Ikose, Ogbomoso, Oyo State, Nigeria, and the cultured fish from the Department of Fisheries and Aquaculture, Oyo State Ministry of Agriculture and Mineral Resources, Ogbomoso, Oyo State, Nigeria, were evaluated. The proximate composition, mineral element composition and essential amino acids profile of the sampled fish species were evaluated using standard laboratory procedures. The results of the proximate composition was observed to be high in cultured population compared to the Wild and there was a statistical significant difference in the amount of crude protein, fibres, carbohydrate, fat/lipid, ash and moisture contents across the two sampled populations (Wild; 17.94 ± 0.19, Cultured; 21.06 ± 0.51), t = -5.738, p-value =0.001. Mineral element content showed maximum amount of copper (Cu), Lead (Pb), Manganese (Mn) and Iron (Fe) in Wild population than in their cultured counterpart while the amount of Cadmium (Cd) and Nickel (Ni) observed in Wild population were undetected. It was also discovered that all amino acid analysed were found to be higher in the cultured group compared to the wild. There were varied levels of significant correlations among all the measured amino acids contents across the two sampled populations. This study showed that the proximate composition, elemental contents and amino acids profiles of both the cultured and wild fishes varies significantly and the results proofed that the cultured fish sample were more nutritious than the wild population, therefore, good monitoring system of Oba Reservoir should be encouraged with strict vigilance.

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