scholarly journals INFESTATION OF NEMATODE PARASITE FILOCHONA TELEOSTEI IN RELATION TO SIZE, WEIGHT AND AGE OF SNOW TROUT SCHIZOTHORAX RICHARDSONII (GRAY)

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Omveer Singh ◽  
Shweta Panwar
Keyword(s):  
Statistical Analysis ◽  
Negative Correlation ◽  
Host Resistance ◽  
Worm Burden ◽  
Biotic Factors ◽  
Host Fish ◽  
Garhwal Himalayas ◽  
Nematode Parasites ◽  
Snow Trout ◽  
Schizothorax Richardsonii

Parasitological investigation was conducted to assess the effects of various biotic factors viz. length, weight and age of host on the infection patterns of Filochona teleostei (Singh & Malik, 1992) in snow trout Schizothorax richardsonii (HAM.) from hill streams of Garhwal Himalayas. The statistical analysis was carried out to calculate infection incidence, mean worm burden, regression values and their significance. About 20% fishes (18% male and 22% female) were found infected with nematode parasites. Infection patterns of Filochona teleostei revealed a negative correlation (r= - 0.347 to - 0.734) with length, (r= - 0.499 to - 0.671) with weight and (r= - 0.576) with age of host fish. The age immunity and stronger host resistance developed by the larger fishes are the possible reasons for the decrease in infection in larger and older fishes.

Morphometric and molecular identification of Argulus japonicus (Thiele 1900) in vulnerable Himalayan snow trout, Schizothorax richardsonii (Gray 1832)

2021 ◽  
Author(s):  
Ritesh Shantilal Tandel ◽  
Khangembam Victoria Chanu ◽  
Raja Aadil Hussain Bhat ◽  
Pragyan Dash ◽  
Tarang Kumar Shah ◽  
...  
Keyword(s):  
Molecular Identification ◽  
Snow Trout ◽  
Schizothorax Richardsonii

scholarly journals Morphological Divergence of Snow Trout (Schizothorax Richardsonii, Gray 1932) from Rivers of Nepal with Insights from a Morphometric Analysis

2015 ◽  
Vol 3 (3) ◽  
pp. 464-473
Author(s):  
Suresh Kumar Wagle ◽  
Neeta Pradhan ◽  
Madhav Kumar Shrestha
Keyword(s):  
Size Variation ◽  
Principal Component ◽  
Head Region ◽  
Body Depth ◽  
Morphometric Characters ◽  
Significant Difference ◽  
Snow Trout ◽  
Major River ◽  
Mean Vectors ◽  
Schizothorax Richardsonii

Asala or snow trout (Schizothorax richardsonii, Cyprinidae), one of highly valued freshwater fish of Transhimalayan regions, is distributed in upper reaches of all major river systems of Nepal. Morphometric diversification between six river populations of S. richardsonii was examined to identify intraspecific unit for enabling better management of the resources. Significant differences were observed in 17 measured morphometric characters of 207 specimens among the six river populations. Multivariate analysis of variance (Wilks' test) indicated a significant difference for mean vectors of mophometric measurements (? =0.012, F85, 731 = 19.999, P<0.0001) among populations. Principal component and discriminant functions (DFs) analysis of morphometric measurements revealed high seperation of the stocks. The analysis showed that most of the shape and size variation among these populations occurs in the head region, body depth and fin length. Apparent morphometric divergence among S. richardsonii samples showed the existence of three differentiated groups viz., the Indrawati and Khudi populations, the Melamchi and Phalaku Rivers, and the Sabha and Tadi River populations of Nepal. The results of this study may be useful in fisheries management and potential exploitation of this species in coldwater aquaculture.Int J Appl Sci Biotechnol, Vol 3(3): 464-473

Determinants of medical specialty competitiveness

2019 ◽  
Vol 96 (1139) ◽  
pp. 511-514 ◽  
Author(s):  
Cedric Lefebvre ◽  
Nicholas Hartman ◽  
Janet Tooze ◽  
David Manthey
Keyword(s):  
Statistical Analysis ◽  
Negative Correlation ◽  
Empirical Data ◽  
Career Choices ◽  
Supply And Demand ◽  
Medical Specialty ◽  
Narrative Review ◽  
Fill Rate ◽  
Ideal World

BackgroundAlthough the concept of medical specialty competitiveness may seem intuitive, there are very little existing empirical data on the determinants of specialty competitiveness in USA. An understanding of the determinants of specialty competitiveness may inform career choices among students and their advisors. Specialty competitiveness correlates with availability and appeal.MethodsThis narrative review examines 2019 National Resident Matching Program (NRMP) data and the existing literature to define the determinants of specialty competitiveness. A statistical analysis of key elements of the 2019 NRMP data was performed.ResultsUsing US senior applicant fill rate as a measure of competitiveness, medical specialty competitiveness follows general principles of supply and demand. The demand, or appeal, of a specialty correlates with several factors, including salary, prestige and lifestyle. Salary correlates strongly with US senior fill rate (r=0.78, p=0.001). Relatively few positions are available for the most competitive specialties in the NRMP match. The negative correlation between US senior fill rate and position availability is also strong (r=−0.85; p<0.0001).ConclusionA ‘competitive specialty’ correlates strongly with high earnings potential and limited position availability. In an ideal world, a student’s pursuit of a medical specialty should be guided by interest, qualifications and ability to succeed in that field. However, students must contend with the realities of competition created by the residency matching system.

scholarly journals Is there always space at the top? Ensemble modeling reveals climate-driven high-altitude squeeze for the vulnerable snow trout Schizothorax richardsonii in Himalaya

2021 ◽  
Vol 120 ◽  
pp. 106900 ◽  
Author(s):  
Aashna Sharma ◽  
Vineet Kumar Dubey ◽  
Jeyaraj Antony Johnson ◽  
Yogesh Kumar Rawal ◽  
Kuppusamy Sivakumar
Keyword(s):  
High Altitude ◽  
Ensemble Modeling ◽  
Snow Trout ◽  
Schizothorax Richardsonii

scholarly journals Assessment of groundwater quality by using statistical analysis from kopargaon taluka, Ahmednagar, India

2016 ◽  
Vol 4 (2) ◽  
pp. 15
Author(s):  
Deshpande A.V. ◽  
Patil S.N.
Keyword(s):  
Statistical Analysis ◽  
Correlation Analysis ◽  
Groundwater Quality ◽  
Negative Correlation ◽  
Monsoon Season ◽  
Pearson Correlation ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
Different Sources ◽  
Descriptive Statistical Analysis

The study was conducted to evaluate the groundwater quality along the Kopargaon taluka. Thirty six ground water samples were collected from different sources in pre monsoon and post monsoon season, during the year 2013. The descriptive statistical analysis was carried out besides Pearson correlation. Correlation analysis revealed that very strong correlation exists between HCO3and Na(0.961), HCO3and Mg++ (0.935), HCO3and EC (0.927). Where highly negative correlation is observed between Na and pH (-0.537) during pre-monsoon season. During post monsoon season highly positive correlation is observed between Cl- and Ca++ (0.973), Ca and EC (0.967), Cl- and EC (0.966), SO4 and EC (0.948). Where, highly negative correlation is observed between Ca and pH (-0.533).

The effect of nutrition on the periparturient parasite status of mature ewes

1998 ◽  
Vol 67 (3) ◽  
pp. 523-533 ◽  
Author(s):  
J. Donaldson ◽  
M. F. J. van Houtert ◽  
A. R. Sykes
Keyword(s):  
Host Resistance ◽  
Energy Supply ◽  
Worm Burden ◽  
Parasite Species ◽  
Dual Infection ◽  
Previous Evidence ◽  
Teladorsagia Circumcincta ◽  
Gastrointestinal Parasitism ◽  
Protein Supply

AbstractThe rôle of nutrition in the periparturient breakdown of resistance to gastrointestinal parasitism in mature ewes was investigated. Host resistance around this period, as measured by faecal egg concentration and worm burden, was sensitive to protein supply and to a lesser extent energy supply and body condition. Resistance was significantly less in ewes bearing and suckling twin lambs than those with singles. Differences in larval intakes spanning the range likely to be experienced in practice did not appear to be important. In dual infection with Teladorsagia circumcincta and Trichostrongylus colubriformis, the breakdown of resistance occurred almost exclusively with T. circumcincta confirming previous evidence of parasite species specificity in the periparturient breakdown of resistance.

Eye-Head Coordination during Optokinetic Stimulation in Squirrel Monkeys

1981 ◽  
Vol 90 (1) ◽  
pp. 85-88 ◽  
Author(s):  
Takeshi Kubo ◽  
David W. Jensen ◽  
Makoto Igarashi ◽  
Jerry L. Homick
Keyword(s):  
Statistical Analysis ◽  
Eye Movements ◽  
Negative Correlation ◽  
Guinea Pigs ◽  
Significant Negative Correlation ◽  
Squirrel Monkeys ◽  
Slow Phase ◽  
Optokinetic Stimulation ◽  
The Gaze ◽  
Significant Difference

Head and eye movements in the yaw plane were recorded during and after optokinetic stimulation in squirrel monkeys. 1) Phasic or tonic head deviations to the side of the ocular quick phase occurred in 94% of total recordings (n = 50) during the perstimulus period, and in 75% of recordings (n = 49) during the poststimulus period. Magnitude of mean head deviation was significantly different between perstimulus and poststimulus periods. 2) Head nystagmus associated with eye nystagmus was consistently observed in seven of nine squirrel monkeys during optokinetic stimulation. Squirrel monkeys are thereby less prone to display head nystagmus than either guinea pigs, pigeons or chickens. 3) Slow phase speeds of coupled head and eye nystagmus were subjected to statistical analysis. A highly significant negative correlation was found between slow phase head and eye speeds. The correlation coefficient was −0.81 at 60°/sec stimulus (n = 119) and −0.72 at 100°/sec stimulus (n = 131). The gaze speed, calculated by summing the head and eye speeds, was 59.1 ± 6.8/sec at 60°/sec and 92.2 ± 11.4 at 100°/sec stimulus. There was no significant difference between the gaze speed in a free head condition and the eye speed when the head was fixed.

scholarly journals Relationship of Malocclusion with Periodontal Status among Adult Population in Chennai - A Case Control Study

2020 ◽  
Vol 11 (SPL3) ◽  
pp. 1378-1384
Author(s):  
Sushanthi S ◽  
Jayashri P ◽  
Arthi B
Keyword(s):  
Statistical Analysis ◽  
Negative Correlation ◽  
Adult Population ◽  
Psychosocial Problems ◽  
Chi Square ◽  
Class Division ◽  
Periodontal Status ◽  
Periodontal Index ◽  
Study Population ◽  
Relationship Of

Malocclusion is defined as an irregularity of the teeth or an incorrect placement of the dental arches that is outside the ideal range. Besides this irregularity of the teeth or jaws, malocclusion may cause periodontal problems, disturbances of oral function such as mastication, swallowing, and speech, and psychosocial problems related to impaired dentofacial aesthetics. Hence this study was conducted to find the relationship between orthodontic malocclusion with periodontal status among the adult population visiting private dental college in Chennai. A retrospective study was conducted using case records of patients attending private dental college from July 2019- March 2020. A total of 932 case sheets of patients who had recorded for Russell’s periodontal index were retrieved and used for statistical analysis. Descriptive statistics, chi-square and Pearson’s correlation was used to analyze the data. Out of 932 participants class I malocclusion-96.24%, class 2 Div I - 1.82%, class division 2, class 2 subdivision, class 3 malocclusion, class 3 subdivision was 0.32%, 0.42%, 0.855 and 0.32% respectively.10.73% of the study population have terminal disease which is a surprising finding when compared with other studies. The results of the study were subjected to statistical analysis. Negligible negative correlation was found between malocclusion and periodontal status and were statistically insignificant. No statistically significant association was found between orthodontic malocclusion and periodontal status and a negligible negative correlation was obtained, which shows that there was no relationship between malocclusion and periodontal status in this study population.

scholarly journals Modelling liveweight performance in parasitised lambs under varying grazing rotation lengths

2006 ◽  
pp. 149-153
Author(s):  
K. Louie ◽  
C.J. Boom ◽  
A. Vlassoff ◽  
V.T. Burggraaf
Keyword(s):  
Adult Worm ◽  
Dynamic Model ◽  
Worm Burden ◽  
Parasite Infection ◽  
The Other ◽  
Rotation Length ◽  
Nematode Parasites ◽  
Lower Variation

A dynamic model for nematode parasites in lambs which links their adult worm burden with decrease in liveweight gain has recently been developed. This model allows for individual lamb variability in response to parasite infection. We use this model to track the liveweight performance of a mob of weaned lambs under six different grazing rotation length scenarios. In all scenarios, lambs with a low worm burden were weaned onto parasite-free pasture. Post-weaning, lambs were either grazed in a 12-week, 8-week, 6-week, 4-week or 2-week grazing rotation, or set stocked. Scenarios were run for 24 weeks with no anthelmintic intervention. The 12-week and 8-week grazing rotation scenarios provided lower worm burdens, higher liveweight gains and lower variation between individual lambs than the other scenarios due to the delay in grazing self-contaminated pastures. For systems that use little or no anthelmintics, being able to provide 8 weeks or more of parasite-free pasture to weaned lambs is likely to provide substantial benefits in the form of higher liveweight gains with less variation between individuals. Keywords: grazing, lambs, liveweight, modelling, parasites

Sign in / Sign up

Export Citation Format

Share Document