scholarly journals Gross Anatomy and Histological Features of Gymnarchus niloticus (Cuvier, 1829) from the River Niger at Agenebode in Edo State, Nigeria

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
M. O. Agbugui ◽  
F. E. Abhulimen ◽  
H. O. Egbo
Keyword(s):  
Gastrointestinal Tract ◽  
Complex Structure ◽  
Feeding Habit ◽  
Gastric Glands ◽  
Carnivorous Fish ◽  
Histological Features ◽  
Pyloric Caeca ◽  
Gymnarchus Niloticus ◽  
Edo State ◽  
River Niger

This study was conducted to record the anatomy and histological features of the gastrointestinal tract of the trunk fish Gymnarchus niloticus captured at Agenebode in the Lower River Niger, Edo State. The gastrointestinal tract was segmented into the mouth, oesophagus, stomach, pyloric caeca, and intestine. The slender (taeniform) body that is fuller at the head tappers at its end. There are no spines on this fish, and the fins used for locomotion are the dorsal fins and not the typical pectoral fins as in other fish. The oesophagus, stomach, pyloric caeca, intestine, and cloaca (anterior, intermediate, posterior, and rectum) were analysed for histological examination. The stomach had significantly higher villi and thicker inner circular muscles compared to the intestine and oesophagus. The lamina propria was thickest in the stomach which is significantly higher when compared with the oesophagus, but not with the intestine. However, the intestine showed significantly thicker outer longitudinal muscle, while gastric glands were observed only in the stomach. The histological features were closely associated with the functions of the different segments of the gastrointestinal tract. In conclusion, the histological features of the gastrointestinal tract of G. niloticus are consistent with the feeding habit of a carnivorous fish. In conclusion, the GIT is a complex structure composed of organs that reveals that it is a higher vertebrate created for a hardy survival, consistent with the feeding habit of a carnivorous fish. The histology reveals a GIT formed by four conspicuous layers from the inside to the outside of the mucosa, submucosa, and an inner longitudinal layer of the muscularis and the outer circular of the muscularis typical of higher vertebrates.

scholarly journals Histological Features of the Gastrointestinal Tract of Wild Indonesian Shortfin Eel,Anguilla bicolor bicolor(McClelland, 1844), Captured in Peninsular Malaysia

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Nurrul Shaqinah Nasruddin ◽  
Mohammad Noor Amal Azmai ◽  
Ahmad Ismail ◽  
Mohd Zamri Saad ◽  
Hassan Mohd Daud ◽  
...  
Keyword(s):  
Gastrointestinal Tract ◽  
Lamina Propria ◽  
Longitudinal Muscle ◽  
Peninsular Malaysia ◽  
Feeding Habit ◽  
Gastric Glands ◽  
Carnivorous Fish ◽  
Histological Features ◽  
Shortfin Eel

This study was conducted to record the histological features of the gastrointestinal tract of wild Indonesian shortfin eel,Anguilla bicolor bicolor(McClelland, 1844), captured in Peninsular Malaysia. The gastrointestinal tract was segmented into the oesophagus, stomach, and intestine. Then, the oesophagus was divided into five (first to fifth), the stomach into two (cardiac and pyloric), and the intestine into four segments (anterior, intermediate, posterior, and rectum) for histological examinations. The stomach had significantly taller villi and thicker inner circular muscles compared to the intestine and oesophagus. The lamina propria was thickest in stomach, significantly when compared with oesophagus, but not with the intestine. However, the intestine showed significantly thicker outer longitudinal muscle while gastric glands were observed only in the stomach. The histological features were closely associated with the functions of the different segments of the gastrointestinal tract. In conclusion, the histological features of the gastrointestinal tract ofA. b. bicolorare consistent with the feeding habit of a carnivorous fish.

THE MORPHOLOGY AND HISTOLOGY OF THE ALIMENTARY CANAL OF GLOSSOGOBIUS GIURUS (HAM.)

1961 ◽  
Vol 39 (5) ◽  
pp. 605-613 ◽  
Author(s):  
S. Mohd. Mohsin
Keyword(s):  
Mucous Membrane ◽  
Alimentary Canal ◽  
Buccal Cavity ◽  
Muscularis Mucosa ◽  
Buccal Epithelium ◽  
Gastric Glands ◽  
Carnivorous Fish ◽  
Pyloric Caeca ◽  
Wide Mouth

Glossogobius giurus is a carnivorous fish with a wide mouth and a short alimentary canal. All the layers of tissue ordinarily found, in the wall of the gut are well developed except in the buccal cavity and the pharynx where the muscular layers are missing.The mucous membrane and the musculature vary greatly in the different regions. The muscularis mucosa is generally wanting. The stratum compactum is not well developed except in the buccal epithelium. There is a true stomach but no pyloric caeca. It is tentatively concluded that fish possess only pepsin-secreting gastric glands. Detailed descriptions are given of typical transverse sections of the various regions.

Biodiversity of Fish Fauna in River Niger at Agenebode, Edo State, Nigeria

2019 ◽  
Vol 23 (4) ◽  
pp. 159-166
Author(s):  
Agbugui M. Onwude ◽  
Abhulimen E. Fran ◽  
Inobeme Abel ◽  
Olori Eric
Keyword(s):  
Fish Fauna ◽  
Edo State ◽  
River Niger

scholarly journals Localization of amidating enzymes (PAM) in rat gastrointestinal tract.

1993 ◽  
Vol 41 (11) ◽  
pp. 1617-1622 ◽  
Author(s):  
A Martínez ◽  
M A Burrell ◽  
M Kuijk ◽  
L M Montuenga ◽  
A Treston ◽  
...  
Keyword(s):  
Small Intestine ◽  
In Situ Hybridization ◽  
Gastrointestinal Tract ◽  
Digestive Tract ◽  
Endocrine Cells ◽  
Regulatory Peptides ◽  
Serial Sections ◽  
Gastric Glands ◽  
Amidating Enzymes

We studied the distribution of the two enzymes involved in post-translational C-terminal alpha-amidation of regulatory peptides in rat digestive tract, using immunocytochemical methods and in situ hybridization techniques. The enzymes were located in most of the fibers and neurons of the myenteric and submucous plexus throughout the entire digestive tract and in endocrine cells of the stomach and colon. Staining of reverse-face serial sections demonstrated that the enzymes in endocrine cells of the stomach co-localized with gastrin in the bottom of the gastric glands. Some gastrin-immunoreactive cells near the neck of the gland were negative for PAM, suggesting that amidation takes place only in the more mature cells. In the colon all cells immunoreactive for glucagon and GLP1 were also positive for peptidylglycine alpha-hydroxylating monooxygenase (PHM) but not for peptidyl-alpha-hydroxyglycine alpha-amidating lyase (PAL). The absence of immunoreactivity for the amidating enzymes in endocrine cells of the small intestine, known to produce C-terminally amidated peptides, suggests the existence of other amidating enzymes.

scholarly journals Abundance, Distribution, Morphometric, Feeding Evaluation and the Reproductive Strategies of Gymnarchus niloticus in the Lower River Niger at Agenebode, Edo State Nigeria

2021 ◽  
Vol 25 (8) ◽  
pp. 1371-1377
Author(s):  
M.O. Agbugui ◽  
F.E. Abhulimen ◽  
A.O. Adeniyi
Keyword(s):  
Fish Species ◽  
Standard Length ◽  
Relevant Information ◽  
Breeding Strategy ◽  
Reproductive Pattern ◽  
Maturity Stage ◽  
Major Food ◽  
Gymnarchus Niloticus ◽  
Small Brood ◽  
River Niger

The study of the numerous areas of biology of fish produces ample and relevant information that aids scientist to explore, know and maintain the survival, growth, continuity and sustainability of life of various fish species. A total of 94 specimens of Gymnarchus niloticus were collected from River Niger at Agenebode during the sample period that ranged from 14 – 94 cm total length (54.88± 17.92); weighed 424 - 2281g (1569.61 ± 422.85). The length weight relationship (LWR) of G. niloticus in this study showed a negative (b<3) allometric growth pattern. Out of the 94 specimens analysed 54 males and 40 females were examined with a ratio of 1:1.4. Insects and decapods were the major food of the juveniles of Gymnarchus niloticus while the major food of preference of the sub adults and adults were Fish and insects with 27.12%, and 27.97% by FO. Gymnarchus niloticus possesses a single ovary in the female and single testis in the male which is often referred to as unpaired gonad. Fecundity ranged between 620 to 1378 eggs with a mean of 957.69 ± 112.31 eggs in females. The relationship between fecundity (F) and weight (W) and fecundity and standard length (SL) showed that fecundity is more related to weight than length of fish. Log F = 820.66 + 0.11 W and Log F = 151.23 + 5.31 SL. Fecundity had a positive significant correlation (P<0.05) with both somatic weight (r = 0.714) and standard length (r = 0.657) of fish. Ova diameter showed a ranged between 3.5 and 7.9 mm with a mean of 4.72 ± SD1.69 mm and it had significant relationship (P<0.05) with total weight, gonad weight and maturity stage. Gymnarchus niloticus in the Lower River Niger at Agenebode showed that G. niloticus has an unpaired gonad in both sexes, a gonochoristic reproductive pattern. Fecundity is low and the ova are large. They are small brood spawners with asynchronous breeding strategy. The attributes of G. niloticus obtained from this study reveals that the fish species is a good candidate for fish culture.

scholarly journals Gastro Intestinal Stromal Tumor : A Case Report

2013 ◽  
Vol 3 (1) ◽  
pp. 47-49
Author(s):  
Tapash Kumar Maitra ◽  
Sharmistha Roy ◽  
Samiron Kumar Mondal ◽  
Noor -Al-Alam
Keyword(s):  
Small Intestine ◽  
Case Report ◽  
Gastrointestinal Tract ◽  
Stromal Tumor ◽  
Histological Features ◽  
Rare Site

Gastro Intestinal Stromal Tumor (GIST) are a type of neoplasm arising from the embryological mesoderm of GastroIntestinal Tract. But they can also arise from extra intestinal sites. The incidence1 of site of origin of GIST is - Oesophagus 5% Stomach 50% Small intestine 25% Colon & rectum 10%, Extr-intestinal (Mesenchyme, GB,Pancreas) 10%.We present here a case of GIST attaining enormous size, having all classical histological features of GIST arising from the mesentery which is a relatively rare site. Birdem Med J 2013; 3(1): 47-49 DOI: http://dx.doi.org/10.3329/birdem.v3i1.17127

scholarly journals Ika Igbo

2015 ◽  
Vol 45 (2) ◽  
pp. 213-219 ◽  
Author(s):  
Joy Oluchi Uguru
Keyword(s):  
Word List ◽  
Lexical Tone ◽  
The West ◽  
North East ◽  
Nasal Vowels ◽  
Language Status ◽  
Major Interest ◽  
Edo State ◽  
Syntactic Function ◽  
River Niger

Ika is a dialect of the Igbo language spoken in Ika South and Ika North East Local Government Areas of Delta State and the Igbanke area of Edo State in Nigeria. It belongs to the Niger Igbo cluster of dialects (Ikekeonwu 1986) spoken in areas bordering the west of the River Niger; Nwaozuzu (2008) refers to these dialects as West Niger Group of Dialects. A word list of Ika, written by Williamson (1968), was one of the earliest works on Ika and she points out in that work that Ika (and Ukwuani), though regarded as dialects of Igbo, are treated as separate on purely linguistic grounds. Ika phonology differs from that of Standard Igbo and other Igbo dialects and this is why the study of Ika has been of major interest to Igbo linguists in recent years. There have been moves to grant Ika a language status, as seen in the assignment of a unique reference code to Ika: the ISO language code for Ika is ISO 639–3 ikk while that for Igbo is ISO 639–3 ibo. Standard Igbo has the same consonants as Ika though the latter has two consonants, /ʃ/and/ʒ/, which do not exist in the Standard dialect. However, the vocalic system of Ika is largely different from that of Standard and some Igbo dialects which have eight vowels. Ika has a nine-vowel system which includes the schwa, which is a variant of some vowels. Furthermore, it has nine nasal vowels; Standard Igbo and other dialects of Igbo have no nasal vowels. Ika manifests intonation in addition to lexical tone. Standard Igbo and other Igbo dialects do not manifest intonation in the same way as Ika does; that is, they do not express attitudes and emotions through intonation. They manifest only lexical tone. In an earlier study of Northern Igbo dialects, Ikekeonwu (1986) could only discover the existence of upstep in Abakaliki dialect. Okorji (1991) and Egbeji (1999) have studied the intonation of Umuchu, an inland West dialect of Igbo. Their findings, particularly Egbeji’s, show that a declarative sentence can be changed to an interrogative one (repetitive question) by use of intonation. This is a syntactic function which can also be likened to what happens in Standard and most other Igbo dialects where the tone of the pronominal subject changes from high to low in the indication of interrogation. At present, therefore, there appears to be no evidence that attitudes and emotions can be expressed through intonation in Umuchu and other Igbo dialects as is observed in Ika.

Sign in / Sign up

Export Citation Format

Share Document