scholarly journals Unusual form of relationship between parasitic nematodes of the genus Philonema (Philonemidae) and salmonids

2020 ◽  
Vol 14 (4) ◽  
pp. 24-33
Author(s):  
V. V. Pospekhov ◽  
V. P. Nikishin
Keyword(s):  
Sockeye Salmon ◽  
Negative Impact ◽  
Thick Layer ◽  
Body Cavity ◽  
The Body ◽  
Parasitic Nematodes ◽  
Dolly Varden ◽  
Internal Organs ◽  
Peculiar Form ◽  
The Relationship

The purpose of the research is studying the relationship between nematodes of the genus Philonema (Philonemidae) and salmonids at the organismic level and justification for their interpretation as a peculiar form of encapsulation.Materials and methods. We studied the sockeye salmon, as well as the freshwater white-spotted char and Dolly Varden trout from lakes Kisi and Chistoye (basin of the Ola River, Taui Bay, Sea of Okhotsk). 7 males for breeding sockeye salmon, 39 freshwater white-spotted chars and 16 Dolly Varden trouts were dissected for infection by Philonema. We used well-known generally accepted techniques in the parasitological studies. The nematodes were preserved in 70 % ethanol and clarified in glycerol.Results and discussion. Phylonema causes pathological processes of various intensity in the body cavity of salmonids. As a rule, this is the adhesion of fish’s internal organs and the formation of a thick layer of connective tissue that surrounds the host's organs from outside and forms a kind of a "cocoon". Our studies combined with literature data allow us to consider the formation of a "cocoon" as a peculiar form of encapsulation and an adaptation that minimizes mutual negative impact of the parasite and the host on each other. Further research should determine how widespread this form of encapsulation is in nature, and it is also necessary to study the mechanism of the "cocoon" formation.

scholarly journals Dissecting the Microbial Community Structure of Internal Organs During the Early Postmortem Period in a Murine Corpse Model

2021 ◽  
Author(s):  
Ruina Liu ◽  
Kai Zhang ◽  
Huan Li ◽  
Qinru Sun ◽  
Xin Wei ◽  
...  
Keyword(s):  
Metabolic Pathways ◽  
The Body ◽  
Time Since Death ◽  
Limited Information ◽  
Microbial Composition ◽  
Internal Organs ◽  
Organ Specific ◽  
Forensic Microbiology ◽  
The Relationship ◽  
Early Postmortem

Abstract Background Microorganisms inhabit and proliferate throughout the body both externally and internally, which are the primary mediators of putrefaction after death. However, limited information is available about the changes in the postmortem microbiota of extraintestinal body sites in the early decomposition stage of mammalian corpses. Results This study applied 16S rRNA barcoding to investigate microbial composition variations among different organs and the relationship between microbial communities and time since death over 1 day of decomposition. During 1 day of decomposition, Agrobacterium, Prevotella, Bacillus, and Turicibacter were regarded as time-relevant genera in internal organs at different timepoints. Pathways associated with lipid, amino acid, carbohydrate and terpenoid and polyketide metabolism were significantly enriched at 8 hours than that at 0.5 or 4 hours. The microbiome compositions and postmortem metabolic pathways differed by time since death, and more importantly, these alterations were organ specific. Conclusion The dominant microbes differed by organ, while they tended toward similarity as decomposition progressed. The observed thanatomicrobiome variation by body site provides new knowledge into decomposition ecology and forensic microbiology. Additionally, the microbes detected at 0.5 hours in internal organs may inform a new direction for organ transplantation.

scholarly journals Investigation on the Incidence, Diagnostic, Possibilities and Design of Prophylactic Treatment in an Outbreak of Bacterial Haemorrhagic Septicemia of Carp

2017 ◽  
Vol 74 (1) ◽  
pp. 26
Author(s):  
Daniela LADOSI ◽  
Octavian NEGREA ◽  
Zamfir MARCHIS ◽  
Flore CHIRILA ◽  
Ana Maria Theodora PARASCA
Keyword(s):  
Aeromonas Hydrophila ◽  
Prophylactic Treatment ◽  
Skin Surface ◽  
Skin Lesions ◽  
Body Cavity ◽  
The Body ◽  
Internal Organs ◽  
Biochemical Traits ◽  
Cutaneous Necrosis ◽  
Therapeutic Possibilities

The investigations carried out on a sample of 53 breeders (31 females and 22 males), in a fishing farm of Suatu village, County of Cluj, concerning the incidence of hemorrhagic bacterial septicaemia, diagnosis and profilactico-therapeutic possibilities. Results highlights a incidence of bacteriosis differentiated according to the category of breeders, 54.8% in females and 36.3% in males. Necropsy examination carried out on 3 specimen of suspected bacteriosis, highlights the presence of hemorrhagic skin lesions, which are dotted or diffuse, respectively musculo-cutaneous necrosis and ulcers. Regarding the internal injuries, opening of the body cavity, revealed consistency changes and septicemy form in major internal organs, as well as the presence of a liquid hollow looking sanguinolent.The bacterioscopic examination of smears from the pathologic material (skin surface end internal samples) and colored with the Gram method, reveled bacterial microflora, represented by coccobacillus and straight bacilli or slightly curved, both Gram negative. Furthermore, the bacteriological (culture) exam performed on usual and selective culture mediae, distinguishes the isolation of pure culture bacteriae belonging to the genus Aeromonas. The exam of biochemical traits, with the aid of API 20 E multitest determines that the isolated strains of Aeromonas spp. belong to the species Aeromonas hydrophila, indicted in the emergence and evolution of the bacterial of haemorrhagic septicaemia. Testing strains sensitivity to antibiotics and chemotherapy (through antibiograma level), reflects the isolated bacteria’s values of sensitivity in decreasing order: amoxicillin, oxytetracycline, florfenicol and enrofloxacilin. However, reduced sensitivity was recorded to tetracycline and ampicillin and resistance to erythromycin. 

scholarly journals Role of Principal in Promoting Teachers Unity: Evaluation in Malaysian Secondary Schools

2021 ◽  
Vol 29 (S1) ◽  
Author(s):  
Bity Salwana Alias ◽  
Zaida Nor Zainuddin ◽  
Mohd Radzi Ishak ◽  
Azlin Norhaini Mansor
Keyword(s):  
Racial Differences ◽  
Negative Impact ◽  
Survey Design ◽  
Pearson Correlation ◽  
Mean Value ◽  
The Body ◽  
Principal's Role ◽  
Role Of Principal ◽  
High Level ◽  
The Relationship

The inability of teachers to accept cultural, linguistic, and religious differences caused by racial differences can have a negative impact on unity. The literature suggests that principals can play a role in addressing this issue. Thus, the purpose of this study is to determine the principal’s role in promoting teachers’ unity and to determine the relationship between the principal’s role and teachers’ unity. This study is a survey design and a quantitative method was used to collect data from 578 teachers in a population of 236,748 teachers in secondary school. The data collected was analyzed descriptively to produce mean value and standard deviation, therefore the level of principals’ role in promoting unity and the level of teachers’ unity can be interpreted. Inference analysis by Pearson correlation was done to determine r-value, therefore the hypotheses on the relationship between the two variables were tested. Overall, principals’ role attained a high level in promoting unity with a mean score of 3.85, whereas the teachers’ unity level was also at a high level with a mean score of 4.37. The result also shows that there was a positive relationship between the two variables but at a weak level with r = 0.20. This paper contributes to the body of knowledge that principals’ role in promoting unity has had an impact on the teachers’ unity level. This finding also shows that the Malaysian Education System Aspiration focusing on promoting unity is relevant and should be continuously implemented. Apart from having theories implication, the findings bear positive input for principals’ training, and also provide input for the teaching fraternity to be more respectful towards each other’s differences, thereby avoiding racism and discrimination amongst them.

DYNAMICS OF QUAIL LIVER TOPOGRAPHY IN POSTNATAL ONTOGENESIS

2021 ◽  
Author(s):  
V.V. Golovchenko ◽  
Keyword(s):  
Age Groups ◽  
Body Cavity ◽  
The Body ◽  
Postnatal Ontogenesis ◽  
Pathological Changes ◽  
Internal Organs ◽  
Liver Growth ◽  
Narrow Bridge

The article presents the results of the studied dynamics of topographic changes in liver growth in different age groups. For the study, Texas quail was taken from one day old to 30 days old. As a result of the study, it was revealed that with age, there are no pathological changes in the structures of the organ. The boundaries of the liver in the body cavity of the quail were established: the liver dorso-cranially borders with the apex of the heart, and dorso-caudally with the cranial edge of the muscular part of the stomach; the liver lobes are interconnected in the cranial part by a narrow bridge. With age, the quail liver becomes irregular in shape, which is due to compression from the internal organs.

scholarly journals A comparative analysis of the relationship between stature and ultrasound dimensions of internal organs in adolescents

2021 ◽  
Vol 12 (2) ◽  
pp. 19-27
Author(s):  
Valerii O. Yerkudov ◽  
Andrey P. Pugovkin ◽  
Aleksej J. Volkov ◽  
Oksana I. Musaeva ◽  
Dmitriy J. Volkov ◽  
...  
Keyword(s):  
Thyroid Gland ◽  
Body Length ◽  
Individual Characteristics ◽  
The Body ◽  
Comparative Characteristic ◽  
Z Score ◽  
Internal Organs ◽  
Average Group ◽  
The Individual ◽  
The Relationship

The aim of the study was a comparative characteristic of the size of internal organs according to ultrasonography data in subjects with various deviations in stature, determined using international standardized norms. Materials and methods. The stature was measured in 93 adolescents, aged 13 to 17 years. Based on the measurements, the Z-score of body length was calculated according to the WHO Growth Reference, 2007 and three groups were formed for comparing the sizes of internal organs: average, above average, below average. Ultrasonography data of the internal organs dimensions and thyroid gland was performed using a Toshiba Aplio 500 ultrasound scanner. Results. There were statistically significantly lower values of the liver span and the longitudinal size of the gallbladder in the examined subjects from the below average group compared to the rest of the subjects. The length of the spleen and the total volume of the thyroid gland were statistically significantly different in subjects from all three groups, with the highest values in volunteers from the above average group. A weak direct correlation was shown between the Z-score of body length and liver span, the length of the cauda of the pancreas, and the width of the spleen. An average direct statistical relationship was found between the Z-score of stature and the length of the spleen, as well as the total volume of the thyroid gland. Conclusion. To a greater extent, body length is associated with the size of the parenchymal organs with a pronounced connective tissue frame - the liver and spleen, as well as the thyroid gland due to the relationship of its volume with hormones that regulate growth and development. Clinical substantiation of the relationship between the structure of the body and internal organs opens up the possibility of creating anatomical standards that allow ultrasound morphometric assessment of internal organs, taking into account the individual characteristics of the patients body size.

Functional bursting by the dracunculoid nematode Philonema oncorhynchi

Parasitology ◽  
1974 ◽  
Vol 69 (3) ◽  
pp. 417-427 ◽  
Author(s):  
J. W. Lewis ◽  
D. R. Jones ◽  
J. R. Adams
Keyword(s):  
Sodium Chloride ◽  
Hydrostatic Pressure ◽  
Sockeye Salmon ◽  
Body Wall ◽  
Body Cavity ◽  
The Body ◽  
Absolute Pressure ◽  
Unit Surface Area ◽  
Ionic Exchange ◽  
Rate Of Increase

Using biomedical techniques experimental determinations of the hydrostatic pressure in the pseudocoel of adult female Philonema oncorhynchi indicated that the rate of increase in pressure (dP/dT) and absolute pressure values (cm/H2O) shown by bursting worms in distilled water are correlated with the diameter of the nematode. At bursting pressures, wall tension in a wide size range of worms was virtually identical, indicating that the bursting process is independent of muscular contraction. That the generation of the hydrostatic pressure was an osmotic phenomenon was confirmed by measuring dP/dT in prelarvigerous and larvigerous female worms subjected to different concentrations of sodium chloride, ranging from 89 to 800 m-osmol/kg, and also to a variety of solutions of similar osmolarity (155–175 m-osmol/kg), e.g. magnesium sulphate, urea, potassium chloride, sodium chloride and sucrose. The overall rate of uptake was faster in the larger worms but, per unit surface area, small worms had an uptake rate three times that of the large individuals.The prediction that the body wall of female P. oncorhynchi is permeable to ions such as Na+ was confirmed using radiolabelled 22Na and by bringing about changes in the osmolarity of worms subjected, for 5 min periods, to hyperosmotic solutions of sodium chloride and sucrose. The survival of P. oncorhynchi in the body cavity of sockeye salmon, Oncorhynchus nerka, is dependent upon the permeable nature of the body wall of P. oncorhynchi allowing the worm to function as an ‘osmometer', because as the anadromous O. nerka enters fresh water, the osmolarity of its blood plasma is known to decrease by about 15%. At the time of spawning in Cultus Lake, British Columbia, the body fluids of both female P. oncorhynchi and O. nerka are isosmotic, indicating that the worms are able to equilibrate to the above changes and at the same time preventing premature bursting in the body cavity of its host. However, osmotic invasion of water must occur far quicker than ionic exchange since complete release of larvae does take place when female worms pass out into the redd along with the eggs of the fish and burst.

A Woodland “Mummy” from Salts Cave, Kentucky

1971 ◽  
Vol 36 (2) ◽  
pp. 200-206 ◽  
Author(s):  
Louise M. Robbins
Keyword(s):  
Annual Meeting ◽  
Body Cavity ◽  
Comprehensive Analysis ◽  
The Body ◽  
Fecal Material ◽  
Internal Organs ◽  
Lower Intestine ◽  
Dental Evidence ◽  
The Individual ◽  
Internal Body

AbstractA mummy, or rather, a dessicated body, from Salts Cave, Kentucky, has been subjected to a comprehensive analysis. Radiocarbon analysis of internal body tissue placed the individual in the Woodland cultural period. A careful dissection of the body cavity revealed the presence of all internal organs but, due to dehydration, in a collapsed form. The diet of the individual, and indirectly of the population, was determined from the contents of the fecal material in the lower intestine and colon. Examination of the external side of the body revealed the individual to be a male, and radiographic and dental evidence indicated that he was around nine years of age. Blood group studies are still somewhat inconclusive, but tests are being conducted to clarify that problem. This paper was originally presented at the 35th Annual Meeting of the Society for American Archaeology, Museo Nacional de Antropologia, Mexico, D.F.

The life-history of Archigetes limnodrili (Yamaguti) (Cestoda: Caryophyllaeidae) and its development in the invertebrate host

Parasitology ◽  
1965 ◽  
Vol 55 (3) ◽  
pp. 427-437 ◽  
Author(s):  
C. R. Kennedy
Keyword(s):  
Life History ◽  
Body Cavity ◽  
Fish Host ◽  
The Body ◽  
Invertebrate Host ◽  
Free Living ◽  
Nature Conservancy ◽  
History Of ◽  
The University ◽  
The Relationship

The development of Archigetes limnodrili in species of Limnodrilus is described. There is no free-living larva and eggs are ingested by the tubificids. Growth and development is completed within the body cavity of the annelid, and egg liberation is accomplished by release of the parasite and decay of its body.Breeding of A. limnodrili takes place throughout the year. In the localities investigated there was no evidence that a fish host was required in the life-cycle. Progenesis was the only type of development encountered in Britain.A. limnodrili exhibits an unusual degree of host specificity, being found only in species of Limnodrilus. It is suggested that this is due to differences in the composition of the coelom or intestine of Limnodrilus compared to other genera.The degree of infection in all localities is very low, and shows no regular seasonal variation. There is no similarity in the seasonal changes in different localities.The relationship between the host and parasite is a stable one, and there is little mutual damage. Factors contributing to this stability are discussed.The development of A. limnodrili is compared with that of other species of Archigetes, and the life-history discussed with particular reference to the phenomenon of progenesis.I wish to thank Professor R. J. Pumphrey in whose Department this work was carried out, and Dr J. C. Chubb for his constant advice and criticism. I also wish to thank Dr K. H. Mann and the University of Reading for provision of specimens and permitting me the use of their facilities. The work was carried out during the tenure of a Nature Conservancy Research Studentship.

Biochemical Studies on Sockeye Salmon During Spawning Migration.: IX. Fat, Protein and Water in the Major Internal Organs and Cholesterol in the Liver and Gonads of the Standard Fish

1960 ◽  
Vol 17 (1) ◽  
pp. 113-122 ◽  
Author(s):  
D. R. Idler ◽  
I. Bitners
Keyword(s):  
Sockeye Salmon ◽  
Alimentary Tract ◽  
Oncorhynchus Nerka ◽  
The Body ◽  
Spawning Migration ◽  
Fraser River ◽  
Internal Organs ◽  
Male And Female ◽  
Biochemical Studies ◽  
River Migration

Absolute changes in fat, protein and water of all major internal organs and free and esterified cholesterol of the liver and gonads of standard male and female sockeye salmon (Oncorhynchus nerka) during the 1957 Fraser River spawning migration to Stuart Lake are discussed. The alimentary tract is the major source of fat and protein from the internal organs and the greater part of this reserve is expended in the first 250 miles (403 km) of the river migration. The testes consumed only 0.5% of the energy expended from the body of the standard male while the ovaries consumed 8% of the energy expended from the body of the standard female.

scholarly journals Heterotaxy: fluctuat nec mergitur

2021 ◽  
Vol 31 (7) ◽  
pp. 1200-1201
Author(s):  
Lucile Houyel ◽  
Anne Moreau de Bellaing ◽  
Damien Bonnet
Keyword(s):  
Situs Inversus Totalis ◽  
The Body ◽  
Abdominal Organ ◽  
Heterotaxy Syndrome ◽  
Internal Organs ◽  
Abdominal Organs ◽  
International Pediatric ◽  
Thoracic And Abdominal ◽  
The Relationship ◽  
Visceral Heterotaxy

AbstractThe International Pediatric and Congenital Cardiac Code (IPCCC) states that visceral heterotaxy is defined as “a congenital malformation in which the internal thoraco-abdominal organs demonstrate abnormal arrangement across the left-right axis of the body. By convention, in congenital cardiology, heterotaxy syndrome does not include patients with complete mirror-imaged arrangement of the internal organs along the left-right axis also known as “total mirror imagery” or “situs inversus totalis”.” [www.ipccc.net]In patients with heterotaxy, it is important to describe both the cardiac relations and the junctional connections of the cardiac segments, with documentation of the arrangement of the atrial appendages, the ventricular topology, the nature of the unions of the segments across the atrioventricular and the ventriculoarterial junctions, the infundibular morphologies, and the relationships of the arterial trunks in space. Particular attention is required for the venoatrial connections, since these are so often abnormal. The relationship and arrangement of the remaining thoraco-abdominal organs, including the lungs, the spleen, the liver, and the intestines, also must be described separately, because, although common patterns of association have been identified, there are frequent exceptions to these common patterns. Therefore, in patients with heterotaxy, it is important to describe each thoracic and abdominal organ independently.

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