Ontogeny of the digestive tract in yellow catfish Pelteobagrus fulvidraco larvae

Yang, Rui-Bin; Xie, Congxin; Fan, Qi-Wen; Gao, Chao; Fang, Li-Bao

doi:10.1016/j.aquaculture.2010.02.020

Cited by 70 publications

(65 citation statements)

References 32 publications

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“…The appearance of gastric glands normally indicates the formation of a functional stomach (Stroband and Kroon, 1981), which is also a histological criterion to differentiate larvae from juveniles (Sarasquete et al, 1995). Similar results were reported for most part of Siluriformes described so far (Verreth et al, 1992;Kozarić et al, 2008;Yang et al, 2010;Saelee et al, 2011;Pradhan et al, 2012), although species-specific differences in terms of stomach morphogenesis and the putative transition from alkaline to acid digestion were observed among species (Table 2). These results indicated that P. punctifer might be weaned onto microdiets after 10 dpf, although further research on digestive system functionality (quantification of digestive enzyme activities) and weaning strategies are needed, as the physiology and morphogenesis of larval digestive tract might be stimulated or impaired, depending on how co-feeding is performed (Cahu and Zambonino-Infante, 2001;Pradhan et al, 2013).…”

Section: Discussionsupporting

confidence: 79%

“…Different species of catfish belonging to the Siluridae (Ompok bimaculatus, Silurus glanis), Claridae (Clarias gariepinus, Clarias nieuhofii), Bagridae (Pelteobagrus fulvidraco) and Heptapteridae (Rhamdia quelen) families have been described so far (Table 2; Verreth et al, 1992;Kozarić et al, 2008;de Amorim et al, 2009;Yang et al, 2010;Saelee et al, 2011;Pradhan et al, 2012), whereas this is the first study on a representation of the family Pimelodidae. Although the morphogenesis of the digestive tract and accessory glands in P. punctifer was similar to that of other catfish and freshwater species, several differences in the timing of organ differentiation and development were observed between P. punctifer and other members of the Siluriformes order, as shown in Table 2.…”

Section: Discussionmentioning

confidence: 99%

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Histological development of the digestive system of the Amazonian pimelodid catfish Pseudoplatystoma punctifer

Gisbert

Moreira

Castro-Ruiz

et al. 2014

Animal

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The organogenesis of the digestive system was described in the Amazonian pimelodid catfish species Pseudoplatystoma punctifer from hatching (3.5 mm total length, TL) to 41 days post-fertilization (dpf) (58.1 mm TL) reared at 28°C. Newly hatched larvae showed a simple digestive tract, which appeared as a straight undifferentiated and unfolded tube lined by a single layer of columnar epithelial cells (future enterocytes). During the endogenous feeding period, comprised between 20 and 96 h post-fertilization (3.5 to 6.1 mm TL), the larval digestive system experienced a fast transformation with the almost complete development and differentiation of most of digestive organs (buccopahrynx, oesophagus, intestine, liver and exocrine pancreas). Yolk reserves were not completely depleted at the onset of exogenous feeding (4 dpf, 6.1 mm TL), and a period of mixed nutrition was observed up to 6 to 7 dpf (6.8 to 7.3 mm TL) when yolk was definitively exhausted. The stomach was the organ that latest achieved its complete differentiation, characterized by the development of abundant gastric glands in the fundic stomach between 10 and 15 dpf (10.9 to 15.8 mm TL) and the formation of the pyloric sphincter at the junction of the pyloric stomach and the anterior intestine at 15 dpf (15.8 mm TL). The above-mentioned morphological and histological features observed suggested the achievement of a digestive system characteristic of P. punctifer juveniles and adults. The ontogeny of the digestive system in P. punctifer followed the same general pattern as in most Siluriform species so far, although some species-specific differences in the timing of differentiation of several digestive structures were noted, which might be related to different reproductive guilds, egg and larval size or even different larval rearing practices. According to present findings on the histological development of the digestive system in P. punctifer, some recommendations regarding the rearing practices of this species are also provided in order to improve the actual larval rearing techniques of this fast-growing Neotropical catfish species.Keywords: histology, ontogeny, digestive system, catfish, larvae, Amazonia ImplicationsThe aquaculture of Amazonian native species requires the mastering of their biological cycle, especially the improvement of current larval rearing procedures. In this context, the present study provides a detailed and comprehensive description of the development of the digestive tract and accessory glands in the pimelodid catfish Pseudoplatystoma punctifer. This information will provide insight in the digestive physiology of this Amazonian fish species in order to synchronize the stage of larval development with rearing procedures and overcome actual larval rearing bottlenecks (e.g. diet formulation, weaning and cannibalistic behaviour). IntroductionAquaculture in Latin America and the Caribbean is principally known for the salmon industry in Chile and shrimp farming in Ecuador. However, the benefits of this export-oriented and large-scale...

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Section: Discussionsupporting

confidence: 79%

Section: Discussionmentioning

confidence: 99%

Histological development of the digestive system of the Amazonian pimelodid catfish Pseudoplatystoma punctifer

Gisbert

Moreira

Castro-Ruiz

et al. 2014

Animal

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“…Diferenciaciones similares fueron halladas en otras especies (Baglole et al, 1997;Mangetti, 2006;Jaroszewska & Dabrowski, 2008). En el epitelio del esófago de otras especies se observaron células mucosas conteniendo mucinas neutras, ácidas y mixtas (Sarasquete et al, 1995;Ostaszewska, 2005;Yang et Figura 5. Imagen comparativa de la reactividad histoquímica (PAS y AA) de las células mucosas del esófago (ES) y estómago (Est).…”

Section: Discussionunclassified

“…Similares observaciones fueron efectuadas por diferentes investigadores en otras especies (Mangetti, 2006;Micale et al, 2006;Önal et al, 2008;Yang et al, 2010). En coincidencia con De Amorim et al (2009), en el presente estudio no se observaron vesículas de absorción en los enterocitos durante el período de alimentación endógena.…”

Section: Discussionunclassified

“…Estudios actuales buscan identificar la presencia y actividad de las enzimas digestivas desde el momento de apertura de la boca (Hamza et al, 2007;Ribeiro et al, 2008;Gisbert et al, 2009) así como la diferenciación celular en células absortivas (enterocitos), mucosas y endocrinas a nivel intestinal, las que cumplen importantes funciones, como absorción y digestión citosólica, defensa, osmoregulación e integración neuroendocrina, modulando los procesos digestivos y la toma de alimentos, entre otros (Mola et al, 2004;Mangetti, 2006;Micale et al, 2006;Önal et al, 2008;Yang et al, 2010).…”

Section: Introductionunclassified

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Estudio histologico e histoquimico de la organogenesis del tubo digestivo de Rhamdia quelen en condiciones de larvicultura intensiva

Hernández

Santinón

Sánchez

et al. 2014

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RESUMEN.El desarrollo del tracto digestivo en larvas de Rhamdia quelen y su cronología de diferenciación fue estudiado histológicamente desde el nacimiento hasta los 20 días posteriores a la eclosión (dpe) con 530 unidades térmicas acumuladas (UTA). Las larvas se mantuvieron en condiciones de larvicultura intensiva, alimentadas con nauplios de Artemia. La diferenciación anatómica e histológica del tracto digestivo fue un proceso asíncrono, con un tubo recto e indiferenciado a 1 dpe (4,87 mm), mientras que al inicio de la alimentación exógena, se organizó en cuatro zonas histológicamente diferenciadas: cavidad bucofaríngea, esófago, estómago incipiente e intestino. A los 15 dpe (397,5 UTA), la organización fue semejante a la de los adultos. Al nacimiento, se observaron corpúsculos gustativos en los barbillones y cavidad bucofaríngea, distribuidos entre un epitelio estratificado con células mucosas. En el esófago, al inicio de la alimentación exógena, se observó epitelio estratificado con células mucosas de secreción neutra y ácida. En el estómago, las glándulas gástricas comenzaron a hacerse visibles entre 8 y 10 dpe (212 a 265 UTA), siendo completamente activas a 20 dpe. El primer día de vida, el intestino presentó el epitelio cilíndrico simple sin características de actividad absortiva evidente, mientras que a 4 dpe (106 UTA) se observaron microvellosidades en la región apical y una importante acumulación de lípidos y proteínas intra-citoplásmicas en el intestino anterior y posterior, respectivamente. En este órgano, las células mucosas fueron ácidas y neutras, siendo ambos tipos los más abundantes en la región distal. Los resultados histológicos indican que las larvas de R. quelen son capaces de digerir y absorber eficientemente el alimento desde los primeros días de vida. Palabras clave: Rhamdia quelen, desarrollo, histología, larva, tubo digestivo, Argentina. Histological and histochemical study of Rhamdia quelen digestive tract organogenesis under intensive larviculture conditionsABSTRACT. The development and the chronological differentiation of the digestive tract in Rhamdia quelen larvae were histologically studied from hatching up to 20 days post-hatch (dph) with 530 accumulated thermal units (ATU). Larvae were kept under intensive larviculture conditions and fed with Artemia nauplii. The anatomical and histological differentiation of the digestive tract was an asynchronous process with an undifferentiated straight tube at 1 dph (4.87 mm). Whereas, at the onset of feeding it was organized into four different histological regions: oropharyngeal cavity, oesophagus, incipient stomach and intestine. At 15 dph (397.5 ATU), the organization was similar to that found in adults. At hatching, taste buds were observed in barbels and oropharyngeal cavity, distributed among a stratified epithelium with mucous cells. A stratified epithelium with mucous cells secreting neutral and acid mucopolysaccharides was observed in the esophagus at the onset of feeding. In the stomach, gastric glands became visible between 8-10 ...

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Comparative Digestive Physiology

Karasov

Douglas

2013

Comprehensive Physiology

253

221

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In vertebrates and invertebrates, morphological and functional features of gastrointestinal (GI) tracts generally reflect food chemistry, such as content of carbohydrates, proteins, fats, and material(s) refractory to rapid digestion (e.g., cellulose). The expression of digestive enzymes and nutrient transporters approximately matches the dietary load of their respective substrates, with relatively modest excess capacity. Mechanisms explaining differences in hydrolase activity between populations and species include gene copy number variations and single-nucleotide polymorphisms. Transcriptional and posttranscriptional adjustments mediate phenotypic changes in the expression of hydrolases and transporters in response to dietary signals. Many species respond to higher food intake by flexibly increasing digestive compartment size. Fermentative processes by symbiotic microorganisms are important for cellulose degradation but are relatively slow, so animals that rely on those processes typically possess special enlarged compartment(s) to maintain a microbiota and other GI structures that slow digesta flow. The taxon richness of the gut microbiota, usually identified by 16S rRNA gene sequencing, is typically an order of magnitude greater in vertebrates than invertebrates, and the interspecific variation in microbial composition is strongly influenced by diet. Many of the nutrient transporters are orthologous across different animal phyla, though functional details may vary (e.g., glucose and amino acid transport with K+ rather than Na+ as a counter ion). Paracellular absorption is important in many birds. Natural toxins are ubiquitous in foods and may influence key features such as digesta transit, enzymatic breakdown, microbial fermentation, and absorption

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Ontogeny of the digestive tract in yellow catfish Pelteobagrus fulvidraco larvae

Cited by 70 publications

References 32 publications

Histological development of the digestive system of the Amazonian pimelodid catfish Pseudoplatystoma punctifer

Histological development of the digestive system of the Amazonian pimelodid catfish Pseudoplatystoma punctifer

Estudio histologico e histoquimico de la organogenesis del tubo digestivo de Rhamdia quelen en condiciones de larvicultura intensiva

Comparative Digestive Physiology

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