Ontogenetic development of the digestive tract in Cuban gar (Atractosteus tristoechus) larvae

Comabella, Yamilé; Franyutti, Arlette Hernández; Hurtado, Andrés; Canabal, Javier; García-Galano, Tsai

doi:10.1007/s11160-012-9289-z

Cited by 25 publications

(25 citation statements)

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“…). In species like Acipenser medirostris (Gisbert & Doroshov ) and Atractosteus tristoechus (Comabella, Hernández‐Franyutti, Hurtado, Canabal & García‐Galano ), the posterior region of the oesophagus has ciliated cells, which are involved in transporting food to the stomach.…”

Section: Discussionmentioning

confidence: 99%

Organogenesis of the digestive system in Pacific red snapper (Lutjanus peru ) larvae

2016

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This study reports the ontogenetic development of the digestive system of larval Pacific red snapper (Lutjanus peru), an important candidate species for aquaculture on the Pacific coast of Mexico. Histological sections of larvae were cut and dyed using the haematoxylin-eosin technique. The development of the digestive tract of Pacific red snapper larvae follows a general pattern of differentiation that can be divided into three stages. Stage I lasted from 1-3 days post hatching (DPH) and included the endogenous nutrition period; it was characterized by the initial differentiation of the digestive tract in preparation for the onset of exogenous feeding (3 DPH). At this time, the digestive tract was differentiated into buccopharynx, oesophagus, stomach anlage, anterior intestine, posterior intestine and a short rectum. The liver, pancreas and kidney were also present. The mouth and anus were open. Stage II occurred after first feeding, lasted for 16 days (4-23 DPH) and included both preflexion and flexion larvae. The main changes that occurred during this stage reflected the adaptation to exogenous feeding and the concomitant growth. Stage III (24-30 DPH) included post-flexion larvae and started with the appearance of the gastric glands and pyloric caeca. The presence of the gastric glands suggests that early weaning during culture trials of the Pacific red snapper larvae may be possible at this early age.

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Section: Discussionmentioning

confidence: 99%

Organogenesis of the digestive system in Pacific red snapper (Lutjanus peru ) larvae

2016

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“…Apart from blood and lymphatic conducting systems, and visceral musculature in the mouth and pharynx regions, some vertebrates also acquire striated muscles in tunica Muscularis of the stomach [58,59] and intestine [60,61].…”

Section: Implication #2mentioning

confidence: 99%

Striated muscles in visceral organs of vertebrates

Субботин¹

2016

J Histol Histopathol

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Pathologists involved in the examination of small rodent tissues are familiar with the presence of striated muscle in walls of intrapulmonary veins. Because these striated muscles express cardiomyocyte markers and are involved in rhythmical contraction during systole, this morphologic arrangement was named "pulmonary myocardium". Striated cardiac muscles of intrapulmonary veins have also been found in numerous species, including non-human primates. Great attention has been given to animal striated pulmonary veins because in humans, the presence of cardiomyocytes in the pulmonary veins (myocardial sleeves) is a major origin of paroxysmal atrial fibrillation. It is unequivocally suggested that direct extension/migration of cardiomyocytes from the left atrium into pulmonary veins is the origin of "pulmonary myocardium". This model sounds logical in regard to humans and large mammals because in these cases, striated myocytes extend into pulmonary veins only by 10-30 mm from the left atrium. However, the cardiomyocyte direct extension/migration model becomes less parsimonious when applied to the numerous small intrapulmonary veins with striated muscles in their walls in small mammals. In 1972, Alfred Sherwood Romer, renowned for his contributions to the study of vertebrate evolution, suggested that visceral smooth muscle cells developed a striated phenotype due to the need for more efficient musculature. Romer theorized that the primary anatomical division of the vertebrate muscular system should be not into smooth and striated types but into somatic and visceral systems, because the line of division along the gut between striated and smooth musculature is not a fixed point. Romer's work offered a parsimonious model for the presence of striated muscle in the walls of the intrapulmonary veins-visceral smooth muscle cells, which are capable of differentiating into striated muscle cells, are always present; whether they differentiate depends on functional demands. From Romer's hypothesis, it also could be foreseen that striated muscle could appear in visceral compartments other than the blood circulatory system and pharyngeal muscles to facilitate functional needs. Indeed, it was shown that 1) the lymphatic system of many low vertebrates acquired a lymphatic heart with striated muscle cells; 2) some vertebrates also acquire striated muscles in tunica Muscularis of the stomach and intestine. The facts above undoubtedly corroborate Prof. Romer's notion on the evolution of the vertebrate muscular system.

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“…The liver and pancreas in C. plagiosum differentiate early in development, as in several teleost species and Chondrichthyes (Wright & Wood 2009;Comabella et al 2012;Pradhan et al 2012). The liver and pancreas expanded rapidly and contained vacuoles within 20 days of hatching, which indicates that they were already functional areas for lipid and glycogen storage (Claes & Mallefet 2010).…”

Section: Discussionmentioning

confidence: 98%

Ontogeny of digestive organs during early developmental stages of the tropical whitespotted bamboo shark,Chiloscyllium plagiosum– a histological study

Qin

Luo

et al. 2015

Marine and Freshwater Behaviour and Physiology

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Ontogenetic development of the digestive tract in Cuban gar (Atractosteus tristoechus) larvae

Cited by 25 publications

References 50 publications

Organogenesis of the digestive system in Pacific red snapper (Lutjanus peru ) larvae

Organogenesis of the digestive system in Pacific red snapper (Lutjanus peru ) larvae

Striated muscles in visceral organs of vertebrates

Ontogeny of digestive organs during early developmental stages of the tropical whitespotted bamboo shark,Chiloscyllium plagiosum– a histological study

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