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81 results for “Clarias gariepinus”
Fig. 7 in Additional data on Spinitectus petterae (Nematoda: Rhabditida) from Clarias gariepinus (Siluriformes: Clariidae) in the Vaal River system: conserved morphology or high intraspecific genetic variability?
Fig. 7. Phylogenetic relationships of Spinitectus spp. based on available cox1 mtDNA for Spinitectus based on Bayesian inference (BI)), with Rhabdochona xiphophori Caspeta-Mandujano, Moravec et Salgado-Maldonado, 2001 as the designated outgroup. Posterior probability (BI) and 1,000 bootstrap replicate (maximum likelihood (ML)) support indicated (BI/ML), nodes with less than 0.5 (50 %) support not annotated. Data shaded in colour from indicated geographical locality or river system, and three haplotypes recorded from the Vaal River system indicated (VRS1–VRS3).
Fig. 2 in Novel distribution records and molecular data for species of Macrogyrodactylus Malmberg, 1957 (Monogenea: Gyrodactylidae) from Clarias gariepinus (Burchell) (Siluriformes: Clariidae) in southern Africa
Fig. 2. Micrographs showing the morphological features of Macrogyrodactylus clarii Gussev, 1961 (A–C), M. congolensis (Prudhoe, 1957) (D–F), and M. karibae Douëllou et Chishawa, 1995 (G, H). A, D, G – hamuli complex; B, E, H – sickle of marginal hook; C, F, I – cirrus with spines.
Fig. 2 in Additional data on Spinitectus petterae (Nematoda: Rhabditida) from Clarias gariepinus (Siluriformes: Clariidae) in the Vaal River system: conserved morphology or high intraspecific genetic variability?
Fig. 2. Light and scanning electron micrographs of adult females of Spinitectus petterae Boomker, 1993 collected from Clarias gariepinus (Burchell). A – neck showing spines on annular rings; B – first three rings on neck, rings indicated numerically and spine length measurement illustrated; C – apical view of the cephalic region; D – lateral view of cephalic region; E – apical view of cephalic structures; F – excretory pore; G – diminishing spines; H – posterior end; inlay gonopore with vulva I – posterior end with gonopore, vulva position indicated; J – conical tail tip; K – conical tail and mucron tip. Abbreviations: A – anus; AP – amphid; CP – cephalic papillae; L – labia; MT – mucron tip; PL – pseudolabia; PS – porous structure; OO – oral opening; V – vulva; SL – sublabium.
Fig. 1. A in Additional data on Spinitectus petterae (Nematoda: Rhabditida) from Clarias gariepinus (Siluriformes: Clariidae) in the Vaal River system: conserved morphology or high intraspecific genetic variability?
Fig. 1. A – map of South Africa; B – map of the river systems in the inlay showing the sampling sites where Spinitectus petterae Boomker, 1993 was collected in Clarias gariepinus (Burchell). Abbreviations: 1 – down-stream of the Vaal River Barrage; 2 – in the Vaal Dam reservoir; 3 – down-stream of the Grootdraai Dam; 4 – Crocodile River.
Fig. 4 in Phenotypic Diversities Of Four Populations Of Clarias Gariepinus (Siluriformes, Clariidae) Obtained From Ogun And Ondo State Waterbodies In South-Western Nigeria
Fig. 4. PCA loadings for meristics of Clarias gariepinus obtained from the four rivers.
Fig. 2 in Phenotypic Diversities Of Four Populations Of Clarias Gariepinus (Siluriformes, Clariidae) Obtained From Ogun And Ondo State Waterbodies In South-Western Nigeria
Fig. 2. PCA loadings for the morphometrics of Clarias gariepinus obtained from the four rivers.
Haplotype-resolved and near-T2T assembly of the African catfish (Clarias gariepinus)
<p>Airbreathing catfishes are a group of stenohaline freshwater fish that can withstand various environmental conditions and farming practices, including the ability to breathe atmospheric oxygen. This unique ability has allowed them to thrive in semi-terrestrial habitats. However, the genomic mechanisms underlying their adaptation to adverse ecological conditions remain to fully investigate, due to the absence of gold standard reference genomes. The present study aimed to sequence and characterize the genome of the African catfish (<em>Clarias gariepinus</em>), a representative air-breathing catfish, to elucidate the genomic underpinnings of its remarkable adaptability. By generating a near telomere-to-telomere (T2T) assembly with high-resolution haplotypes, we sought to identify genomic and evolutionary features that may have contributed to its ability to withstand adverse conditions and transition to semi-terrestrial life. \textbf{Methods:} We conducted a comprehensive genomic analysis of the African catfish using a multi-platform sequencing approach, integrating Oxford Nanopore, PacBio HiFi, Illumina, and Hi-C technologies to achieve a haplotype-resolved chromosome-scale genome assembly. Functional annotations and comparative genomic analyses, including gene family evolution and positive selection studies, were performed to identify the genomic mechanisms underlying the species' resilience and adaptation to diverse environments.<strong> Results:</strong> This multifaceted approach has provided novel insights into the African catfish's complex genomic architecture and adaptive strategies. The near-T2T diploid assembly yielded 48 contigs spanning 969.62 Mb with a contig N50 of 33.71 Mb. We report 25,655 predicted protein-coding genes and 43.94\% repetitive elements in the African catfish genome. Several gene families involved in ion transport, osmoregulation, oxidative stress response, and muscle metabolism were expanded and positively selected in clariids, suggesting a potential role in their transition and adaptation to semi-terrestrial habitats. <strong>Conclusion</strong>: Our study provides a comprehensive genomic resource for \textit{Clarias gariepinus}, shedding light on the genetic and genomic mechanisms of clariids' adaptation to adverse ecological environments. The findings enhance our understanding of resilience in <em>C. gariepinu</em>s and offer valuable insights for improving aquaculture and studying related teleosts.</p>
Fig 1 in Incidence of parasitic infection in adult and juvenile Clarias gariepinus in a private fish farm, Yola, Adamawa state
Fig 1: Sex Variation in Prevalence (%) of Parasitic Infection of Culture Clarias gariepinus
Fig 1 in Growth performance, nutrient utilization and survival rate of Clarias gariepinus fed varied inclusion of processed Moringa oleifera diets
Fig 1: Showing Research Location
Plate 4 in Incidence of parasitic infection in adult and juvenile Clarias gariepinus in a private fish farm, Yola, Adamawa state
Plate 4: Capillaria parasites recovered from the stomach and intestine of C. gariepinu
Plate 6 in Incidence of parasitic infection in adult and juvenile Clarias gariepinus in a private fish farm, Yola, Adamawa state
Plate 6: Piscinoodinium (Dinoflagellate) found on the gill of adult Clarias gariepinus
Plate 2 in Incidence of parasitic infection in adult and juvenile Clarias gariepinus in a private fish farm, Yola, Adamawa state
Plate 2: Internal organ of adult Clarias gariepinus dissection indicating the stomach, intestine
Plate 3 in Incidence of parasitic infection in adult and juvenile Clarias gariepinus in a private fish farm, Yola, Adamawa state
Plate 3: Piscinoodinium (Dinoflagellate) found on the skin of adult Clarias gariepinus
Fig1 in Use of fresh or dried manure worm (Eisenia foetida) on the growth performance of juvenile of Clarias gariepinus high out in basin
Fig1: Evolution in weight of Clarias gariepinus fingerlings subjected to different treatments
Fig 3 in Effects of the border closure Benin-Nigeria on the marketing of Clarias gariepinus
Fig 3: Modern ovens « Chorkor »
Fig 2 in Effects of the border closure Benin-Nigeria on the marketing of Clarias gariepinus
Fig 2: Barrel oven with Clarias
Fig 1 in Effects of the border closure Benin-Nigeria on the marketing of Clarias gariepinus
Fig 1: Geographic location of the study area
Fig 4 in Effects of the border closure Benin-Nigeria on the marketing of Clarias gariepinus
Fig 4: Clarias in a clay oven
Fig 6 in Effects of the border closure Benin-Nigeria on the marketing of Clarias gariepinus
Fig 6: Circuit of marketing for fish in department of Oueme
Fig. 56. Clarias gariepinus, 240 in The non-native freshwater fishes of Singapore: an annotated compilation
Fig. 56. Clarias gariepinus, 240 mm SL, Upper Seletar Reservoir.
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Allen Brain Atlas
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OpenNeuro
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