Ontogeny and development of the gastrointestinal system in Indian walking catfish (Clarias magur) during its early development

Kumari, Rakhi; Sharma, Prakash; Sarma, Debajit; Siddaiah, G.M.; Dubey, Maneesh Kumar; Mir, Isfaq Nazir; Srivastava, Prem Prakash

doi:10.1007/s10695-021-00957-2

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…In most marine and freshwater teleost species, the gut is an undifferentiated tube at hatching (Falk‐Petersen, 2005; Gao et al, 2016; Lazo et al, 2011; Mitra et al, 2015; Pradhan et al, 2012; Rønnestad et al, 2013; Yúfera & Darias, 2007; Zambonino‐Infante et al, 2008). In contrast, representatives of Coregoninae (Salmoniformes) and the phylogenetically distant Clarias magur (Siluriformes) have a differentiated digestive tract at hatching (Korovina, 1981; Kumari et al, 2021). Our results and published data (Bogdanova, 1977) show that S. leucichthys nelma hatches at a morphologically advanced stage.…”

Section: Discussionmentioning

confidence: 99%

“…In our previous work, we described the YSL programmed death in S. leucichthys nelma for the first time (Kondakova & Bogdanova, 2021). The data on the YSL programmed death is scant (Kondakova & Efremov, 2014; Kondakova et al, 2016; Kumari et al, 2021; Mani‐Ponset et al, 1996; Pradhan et al, 2012; Walzer & Schönenberger, 1979). Around 31 dph or later the YSN of S. leucichthys nelma undergo pyknosis; “apoptotic bodies” are formed.…”

Section: Discussionmentioning

confidence: 99%

“…The YSL remnant and “apoptotic bodies” are cleared by cells of variable morphology. They can be similar or different compared to the presumable phagocytes of Sparus aurata , Danio rerio , Cyprinus carpio and Clarias magur (Kondakova & Efremov, 2014; Kondakova et al, 2016; Kumari et al, 2021; Mani‐Ponset et al, 1996). Melanomacrophages are seen among these cells in S. leucichthys nelma .…”

Section: Discussionmentioning

confidence: 99%

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The development of the digestive system and the fate of the yolk syncytial layer in postembryogenesis of Stenodus leucichthys nelma (Teleostei)

Kondakova

Bogdanova

Ottesen

et al. 2023

Journal of Morphology

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Stenodus leucichthys nelma is an economically important species for cold‐water aquaculture. Unlike other Coregoninae, S. leucichthys nelma is a piscivore. Here, we describe in detail the development of the digestive system and the yolk syncytial layer from hatching to early juvenile stage using histological and histochemical methods to determine their common and specific characteristics and to test the hypothesis that the digestive system of S. leucichthys nelma rapidly acquires adult features. The digestive tract differentiates at hatching and starts to function before the transition to mixed feeding. The mouth and anus are open, mucous cells and taste buds are present in the buccopharyngeal cavity and esophagus, pharyngeal teeth have erupted, the stomach primordium is seen, the intestinal epithelium with mucous cells is folded and the intestinal valve is observed; the epithelial cells of the postvalvular intestine contain supranuclear vacuoles. The liver blood vessels are filled with blood. The cells of exocrine pancreas are loaded with zymogen granules, and at least two islets of Langerhans are present. However, the larvae remain dependent on maternal yolk and lipids for a long time. The adult features of the digestive system develop gradually, the most significant changes take place approximately from 31 to 42 days posthatching. Then, the gastric glands and pyloric caeca buds appear, the U‐shaped stomach with glandular and aglandular regions develops, the swim bladder inflates, the number of islets of Langerhans increases, the pancreas becomes scattered, and the yolk syncytial layer undergoes programmed death during the larval‐to‐juvenile transition. During postembryonic development, the mucous cells of the digestive system contain neutral mucosubstances.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The development of the digestive system and the fate of the yolk syncytial layer in postembryogenesis of Stenodus leucichthys nelma (Teleostei)

Kondakova

Bogdanova

Ottesen

et al. 2023

Journal of Morphology

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“…High larval mortality associated with first feeding and weaning to an artificial diet causes the seed deficit of this species. Knowledge of early developmental digestive capacity in terms of functionality of digestive enzymes is crucial for determining the timing of onset of exogenous feeding, type of food/diet (live or formulated) and time of weaning from live to formulated feed (Kumari et al, 2021). Gene expression studies during larval development can provide deep insight into the molecular mechanisms by which the genes involved in the complex regulatory networks of physiological processes function.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of candidate reference genes for RT‐qPCR analysis during developmental stages in striped murrel ( Channa striata )

Kumari

Srivastava

Mohanta

et al. 2022

Aquaculture Research

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Real‐time quantitative PCR (RT‐qPCR) is the most advanced and commonly used method for quantification of gene expression levels because of its high sensitivity, specificity and accuracy. The analytical capability of RT‐qPCR, on the other hand, is dependent on precise normalization by using the most stable reference genes. The present study was undertaken to find the best‐suited reference gene for normalization of qPCR data for ontogenetic studies of striped murrel. Four commonly used and constitutively expressed genes, namely beta‐actin (β‐actin), glyceraldehyde‐3‐phosphate dehydrogenase (GAPDH), elongation factor 1‐alpha (EF1α) and 18 S ribosomal protein (18 S RNA) were screened and evaluated for their expression stability in developing larvae from 1 to 35 days post hatch (dph). The stability and suitability of these genes were determined by using four different algorithms; namely, delta Ct, BestKeeper, geNorm and NormFinder. The four algorithms together generated a comprehensive ranking EF1α being the most stable, followed by GAPDH and β‐actin as the least stable gene. This is the first report evaluating the most suitable reference gene for mRNA expression studies in C. striata, in the context of ontogenetic development.

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Exploring ontogenic development and larval rearing of striped murrel (Channa striatus)

Kalaiselvan,

Ranjan,

Nazir

et al. 2024

Aquacult Int

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Ontogeny and development of the gastrointestinal system in Indian walking catfish (Clarias magur) during its early development

Cited by 7 publications

References 29 publications

The development of the digestive system and the fate of the yolk syncytial layer in postembryogenesis of Stenodus leucichthys nelma (Teleostei)

The development of the digestive system and the fate of the yolk syncytial layer in postembryogenesis of Stenodus leucichthys nelma (Teleostei)

Evaluation of candidate reference genes for RT‐qPCR analysis during developmental stages in striped murrel ( Channa striata )

Exploring ontogenic development and larval rearing of striped murrel (Channa striatus)

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