scholarly journals Hábito alimentar e morfologia do tubo digestivo de Haplias malabaricus (Osteichthyes, Elythrinidae) da Lagoa Dourada, Ponta Grossa, Paraná, Brasil

1995 ◽  
Vol 24 ◽  
Author(s):  
Marcos Flávio Pádua de Moraes ◽  
Ivana de Freitas Bárbola
Keyword(s):  
Digestive Tract ◽  
Lamina Propria ◽  
Mucous Membrane ◽  
Standard Length ◽  
Buccal Cavity ◽  
Feeding Habits ◽  
Abdominal Cavity ◽  
Tube Digestif ◽  
Gill Rakers ◽  
Mucosal Folds

Neste estudo, são abordados aspectos relacionados à alimentação e à morfologia dos órgâos de captura e assimilaçao de alimentos de Haplias malabaricus (Osteichthyes, Elythrinidae), da Lagoa Dourada, em Ponta Grossa, ParanÁ. As coletas forarn realizadas de abril de 1993 a abril de 1994. De cada exemplar, foram registrados comprimento total, comprimento padrão, peso total e rnedida da cavidade celomática, além de análises anatômicas e histológicas da cavidade bucal, estômago e intestino. Jovens de H. malabaricus apresentam hábito alimentar insetívoro, enquanto que os adultos, ictiófago. Os dentes mandibulares são fortes e cônicos, caracteristicos de espécies predadoras. Os rastros branquiais são pouco numerosos, fortes e longos. Possui o estômago do tipo sifonal com a mucosa bem desenvolvida com pregas altas e arredondadas. As criptas gástricas são rasas e estreitas, corn a lâmina própria da região pilórica aglandular. 0 intestino é curto corn as alças descrevendo poucas curvas, sendo que nas regiões anterior e media a camada mucosa apresenta pregas altas, estreitas e corn anastomoses, diminuindo de tamanho em direção a região posterior. Abstract Some aspects of the feeding habits and the morphology of the digestive tract are investigated in Haplias malabaricus (Osteichthyes, Erythinidae), in Lagoa Dourada, Ponta Grossa, Paraná, captured between April 1993 and April 1994. From each specimen, the following measurements/data was determined: total and standard length, weight, length of abdominal cavity. Histological and anatomical analyses were perforrned on the buccal cavity, stomach, and intestine. Youngs of H. malabaricus are insectivorous, while the adults are piscivorous. The conical and strong jaw teeth are characteristic of predaceous species. There are few long and strong gill rakers. The stomach is syphon type with high and rounded mucosal folds. Gastric pits are shallow and thin, with aglandular pyloric lamina propria. The short intestinal conduct has few loops. Mucous membrane folds of the anterior and medium regions are hight, narrow and depicts anastomosis that reduce toward the posterior region. Résumé Quelques aspects du comportament alimentaire et de la morphologie du tube digestif sont recherchés dans l’espèce Haplias malabaricus (Osteichthyes, Erythrinidae), du Lagoa Dourada, Ponta Grossa, Paraná, Brésil. Les poissons ont été captures entre avril 1993 et avril 1994. De chaque spècime, les suivantes mesures ont été determinées: la longueur totale et standart, le poids, la longueur de la creux abdominale. Les analyses histologiques et anatomiques ont été faites de la cavité bucale, de l’estomac et de l’intestin. Les jeunes de Haplias malabaricus sont insecticvores alors que les adultes mangent des poissons. Les dents fortes e coniques de la mandibule sont caractéristiques des espèces predateurs. Li y a peu de traces lamelleires longues et fortes. L’estomac est du tipe siphon ayant. Les plis de la muqueuse elevés et arrondis. Les creux de l’estomac sont ras e minces, avec la lamina propria piloric aglandulaire. L’intestin court n’a pas beaucoup d’anses. Les plis de la membrane muqueuse des regions anterieurs et moyennes sont hautes et étroites et elles décrivent les anastomosis qui les diminuent vers la region postérieure.

scholarly journals Occurrence of Tetracampos ciliotheca and Proteocephalus glanduligerus in Clarias gariepinus (Burchell, 1822) collected from the Vaal Dam, South Africa

2013 ◽  
Vol 80 (1) ◽  
Author(s):  
Grace Madanire-Moyo ◽  
Annemariè Avenant-Oldewage
Keyword(s):  
South Africa ◽  
Digestive Tract ◽  
Standard Length ◽  
Feeding Habits ◽  
Clarias Gariepinus ◽  
Male And Female ◽  
Mean Intensity ◽  
Gill Nets ◽  
Larval Stages ◽  
Vaal Dam

Cestodes are parasitic flatworms that live in the digestive tract of vertebrates as adults and often in the liver, muscle, haemocoel, mesentery and brain of various animals as larval stages. To identify the cestodes infecting Clarias gariepinus Burchell, 1822 (sharptooth catfish) in the Vaal Dam, a total of 45 host specimens were collected with the aid of gill nets between October 2011, January and April 2012. The fish were sacrificed and examined for cestode parasites. Two adult cestodes, Tetracampos ciliotheca Wedl, 1861 (prevalence 86.7%, mean intensity = 15, n = 45) and Proteocephalus glanduligerus (Janicki, 1928) (prevalence 51.1%, mean intensity = 5, n = 45) were found in the intestines of the catfish. Both T. ciliotheca and P. glanduligerus are new locality records. There were statistically insignificant differences in the infection of the male and female C. gariepinu. Fish with standard length ranging from 40 cm – 54 cm (≥ 3 years) had the highest prevalence and mean intensity while those ranging from 10 cm – 24 cm (< 1 year) had the lowest prevalence and mean intensity for both cestodes. The study highlights the importance of changing feeding habits of C. gariepinus with age on the prevalence and mean intensity of the two gastrointestinal cestode parasites.

scholarly journals Morphohistology of the Digestive Tract of the Damsel FishStegastes fuscus(Osteichthyes: Pomacentridae)

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Bhaskara Canan ◽  
Wallace Silva do Nascimento ◽  
Naisandra Bezerra da Silva ◽  
Sathyabama Chellappa
Keyword(s):  
Digestive Tract ◽  
Transition Region ◽  
Digestive System ◽  
Feeding Habits ◽  
Northeastern Brazil ◽  
Muscular Layer ◽  
Pyloric Caeca ◽  
Anterior Intestine ◽  
The Mean ◽  
Tidal Pools

This study investigated the morphohistology of the digestive tract and the mean intestinal coefficient of the damsel fishStegastes fuscuscaptured from the tidal pools of Northeastern Brazil. The wall of the digestive tract ofS. fuscusis composed of the tunica mucosa, tunica muscularis, and tunica serosa. The esophagus is short with sphincter and thick distensible wall with longitudinally folded mucosa. Mucous glands are predominant, and the muscular layer of the esophagus presented striated fibers all along its extension. The transition region close to the stomach shows plain and striated muscular fibers. Between the stomach and intestine, there are three pyloric caeca. The intestine is long and thin with four folds around the stomach. The anterior intestine presents folds similar to those of pyloric caeca. The estimated mean intestinal coefficient and characteristics of the digestive system ofS. fuscuspresent morphological adequacy for both herbivorous and omnivorous feeding habits.

scholarly journals Gastric duplication cyst with localization in the pancreas in children

2020 ◽  
Vol 10 (1) ◽  
pp. 35-42
Author(s):  
Yurii Yu. Sokolov ◽  
Artem M. Efremenkov ◽  
Aleksandr P. Zykin ◽  
Elena L. Tumanova ◽  
Zhanna R. Omarova ◽  
...  
Keyword(s):  
Mucous Membrane ◽  
Clinical Observation ◽  
Abdominal Cavity ◽  
Clinical Manifestations ◽  
Duplication Cyst ◽  
The Body ◽  
Recurrent Bleeding ◽  
Gastric Duplication ◽  
Gastric Duplication Cyst ◽  
Gastric Type

Introduction. Gastric duplication cyst is a rare clinical observation. More often, these cysts are localized in the fundus or body of the stomach and have a common muscle layers and blood supply. Even more rarely, duplication cysts are not anatomically connected to the stomach and are located in other parts of the abdominal cavity or in the retroperitoneal space. Cystic duplication of the gastrointestinal tract, which are localized in the pancreas, is extremely rare. The aim of the study is to demonstrate the possibility of using laparoscopy for this disease. Materials and methods. The paper describes three rare clinical observations of gastric duplication cyst topographically associated with the pancreas. In the first clinical observation, gastric duplication cyst was combined with mediastinal duplication cysts, an esophageal bronchial fistula, and extralobar pulmonary sequestrations. In the second observation, a duplication cyst had communication with the pancreatic duct system and was clinically manifested by recurrent bleeding. In the third case, a duplication cyst is diagnosed behind the body and tail of the pancreas. Results. In all cases, surgical treatment was carried out by the laparoscopic method, leading to complete recovery. Histological examination in all the described observations confirmed the gastric type of epithelium of the mucous membrane of the cysts. The article provides a review of the literature. Conclusion. Thus, the efficiency of laparoscopic interventions in children with gastric duplications topographically associated with the pancreas was demonstrated. The described rare clinical manifestations, a combination of defects, as well as the possible presence of heterotopy of the mucous membrane of the duplication cyst confirm the need for surgical correction of the disease.

Redescription of the Indo-West Pacific cardinalfishes (Perciformes: Apogonidae) Rhabdamia spilota Allen & Kuiter 1994 and R. gracilis (Bleeker 1856)

Zootaxa ◽  
2018 ◽  
Vol 4377 (2) ◽  
pp. 178 ◽  
Author(s):  
TOMOHIRO YOSHIDA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
Red Sea ◽  
Standard Length ◽  
New Caledonia ◽  
The Philippines ◽  
The Body ◽  
Andaman Sea ◽  
Sexual Dichromatism ◽  
Gill Rakers ◽  
Black Stripe ◽  
West Pacific

Rhabdamia spilota Allen & Kuiter 1994 (Apogonidae), a poorly known cardinalfish previously known only from the Philippines, Indonesia and the Red Sea, is redescribed on the basis of 70 specimens (20.9–61.2 mm standard length) (including types), from the Indo-West Pacific (Red Sea, Andaman Sea, Japan, South China Sea, the Philippines, Indonesia, New Caledonia, and Australia). Because most reports of the similar species R. gracilis (Bleeker 1856), following its original description, were based on misidentifications, R. gracilis is also redescribed (based on 98 Indo-West Pacific specimens from Seychelles, Maldives, Andaman Sea, Japan, Malaysia, Indonesia, New Caledonia, and Australia, 27.9–59.3 mm standard length); a lectotype is designated for it. Rhabdamia spilota differs from R. gracilis in having 27–33 (mode 30–31) developed gill rakers [vs. 22–27 (mode 24) in the latter], 27–33 (30) gill rakers including rudiments [vs. 23–27 (24–25)], a black stripe from the jaw tips to the anterior margin of the orbit (vs. black pigments only at snout and tip of lower jaw), 3–6 reddish brown to blackish blotches on the opercle and anterior of body (vs. blotches absent), and indistinct black pigment restricted to caudal fin outer margins (vs. pigment scattered over entire fin). Rhabdamia gracilis exhibits sexual dichromatism, female specimens larger than 41.3 mm SL having one or two black stripes on the lateral surface of the body; the stripes are absent in males and smaller females. No evidence of sexual dichromatism was found in R. spilota. 

scholarly journals Morphological characteristics of the digestive tract of Schizodon knerii (Steindachner, 1875), (Characiformes: Anostomidae): An anatomical, histological and histochemical study

2015 ◽  
Vol 87 (2) ◽  
pp. 867-878 ◽  
Author(s):  
Marcella L. Dos Santos ◽  
Fábio P. Arantes ◽  
Kleber B. Santiago ◽  
José E. Dos Santos
Keyword(s):  
Digestive Tract ◽  
Squamous Epithelium ◽  
Feeding Habits ◽  
Morphological Characteristics ◽  
Goblet Cells ◽  
Taste Buds ◽  
Mucous Cells ◽  
Pyloric Region ◽  
Mucosal Cells ◽  
Stratified Squamous Epithelium

The digestive tracts of 44 specimens of Schizodon knerii were studied using anatomical, histological and histochemical techniques. The mouth has terminal position, the lip epithelium is squamous stratified with mucous, claviform cells and taste buds, teeth have an incisive form and the tongue has a stratified squamous epithelium with mucous cells and taste buds. The oropharynx cavity is formed by gill apparatus and pharyngeal teeth. The oesophagus presented pleated mucosa, a stratified squamous epithelium with mucous cells, oesophageal glands and taste buds. The stomach presented cardiac, fundic and pyloric regions, simple prismatic epithelium with tubular glands, with none in the pyloric region. The intestine contains 11-15 pyloric caeca, a simple prismatic epithelium with brush border, goblet cells and lymphocytes. Mucosal cells, oesophageal glands and goblet cells reacted positively to PAS, amylase + PAS, Ab pH 2.5 and Ab pH 0.5. Gastric prismatic cells reacted positively to PAS, amylase + PAS, but only those in the pyloric region reacted positively to Ab pH 2.5 and Ab pH 0.5. The results improve the understanding of the anatomy of S. knerii feeding habits and the presence of mucosubstances in the epithelium, highlights the importance of glycoproteins for passing food through the digestive tract.

Sensitivity of ant (Cephalotes) colonies and individuals to antibiotics implies feeding symbiosis with gut microorganisms

2001 ◽  
Vol 79 (6) ◽  
pp. 1120-1124 ◽  
Author(s):  
Klaus Jaffe ◽  
Flavio H Caetano ◽  
Pedro Sánchez ◽  
Jose V Hernández ◽  
Leonardo Caraballo ◽  
...  
Keyword(s):  
Amino Acids ◽  
Antibiotic Resistance ◽  
Digestive Tract ◽  
Feeding Habits ◽  
Bird Droppings ◽  
Resistance Patterns ◽  
Gut Microorganisms ◽  
Antibiotic Resistance Patterns

Ants in the tribe Cephalotini are exceptional in that they maintain microorganisms in their digestive tract. To understand what these microorganisms mean to the ants, we observed the feeding habits of Cephalotes pusillus and Cephalotes atratus, finding that in nature they feed on extrafloral nectars, homopteran secretions, and bird droppings. Feeding the antibiotic kanamycin to colonies of C. pusillus in the laboratory kills them. Ants desiccate or starve rather than feed on liquids to which the antibiotics gentamycin and netilmycin have been added, but feed and survive on liquids containing nystatin, penicillin, and ampicillin. We identified over 10 microorganisms from the intestine of C. pusillus with different antibiotic-resistance patterns. The bacteria are from the genera Corynebacterium, Brevibacterium, Sphingobacterium, Ochrobactrum, Myroides, Brevundimonas, Alcaligenes, Stenotrophomonas, Moraxella, and Pseudomonas. We hypothesize that the microorganisms provide nutrients to the ants by synthesizing amino acids from carbohydrates and nitrates. We do not know whether the ants collect the bacteria from the environment, but they transmit them to their young. They culture them in their digestive tract, eventually feeding on them.

Benign mucous membrane pemphigoid of the upper aero-digestive tract: rare paraneoplastic syndrome presentation in renal cell carcinoma

2006 ◽  
Vol 120 (3) ◽  
pp. 237-239 ◽  
Author(s):  
K Saravanan ◽  
S T Baer ◽  
A Meredith ◽  
A Dyson ◽  
Jan von der Werth
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Digestive Tract ◽  
Mucous Membrane ◽  
Paraneoplastic Syndrome ◽  
Renal Cell ◽  
Autoimmune Disorder ◽  
Mucous Membrane Pemphigoid ◽  
Cicatricial Pemphigoid ◽  
Case Presentation

Benign mucous membrane pemphigoid is a rare autoimmune disorder affecting the upper aero-digestive tract and conjunctivae. This is a case presentation of benign mucous membrane pemphigoid affecting the oral mucosa, pharynx, oesophagus and larynx, leading to cicatricial lesions in the pharynx and larynx, causing dysphagia, hoarseness and stridor. The alternative forms of management for laryngeal scarring due to this disease are explained. The patient was later diagnosed with advanced renal cell carcinoma, raising the possibility of cicatricial pemphigoid manifesting as a paraneoplastic syndrome of underlying renal cell carcinoma.

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