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Comparative analysis of morphometric features of the eggs of selected alimentary tract parasites and of the plant pollens

100%

Szwabe K. , Kurnatowski P.

Annals of Parasitology

2012

tom 58

nr 2

The aims of the study were: 1. to compare morphometric features of eggs of selected alimentary tract parasites and common garden plants pollen, which may accidentally contaminate a feces undergoing parasitological examination; 2. to make laboratory diagnosticians aware of a possibility of an error at coproscopic examination as well as in helminthologic evaluation of the environmental samples (soil, water). Eggs of 7 species of alimentary tract parasites and 52 common garden plants pollens were examined and compared; using of MultiScanBase v.8.08 computer program the perimeter, length and width of the given objects/images were measured and statistical calculations were made in Statistica 9.1 program. The following conclusions can be drawn: 1. The computer image comparative analysis of parasite eggs and plant pollen proved the existence of statistically significant differences between the particular morphometric features; 2. A routine direct microscopic observation of feces is performed with the naked eye which is not able to notice slight differences (up to a few μm in size), and therefore, despite lack of statistically significant differences, it is easy to make an error; 3. During a routine microscopic observation it should be remembered that the structure, shape or exine of many commonly occurring pollen grains are extremely similar to eggs of some parasites; 4. Both in the analysis of feces specimens and the evaluation of environmental samplings characteristic morphological features of eggs should be considered to facilitate differentiation between eggs and pollen grains; 5. Following the precautionary measures to avoid contamination of feces simples with plants pollens, quality control as well as reliability and awareness of risk eliminates danger of obtaining false positive results.

The nematodes Thelazia gulosa Railiet and Henry, 1910 and Thelazia skrjabini Erschov, 1928 as a cause of blindness in European bison (Bison bonasus) in Poland

84%

Demiaszkiewicz A. W. , Moskwa B. , Gralak A. , Laskowski Z. , Myczka A. W. , Kolodziej-Sobocinska M. , Kaczor S. , Plis-Kuprianowicz E. , Krzysiak M. , Filip-Hutsch K.

Acta Parasitologica

2020

tom 65

nr 4

Erosional-denudational valleys and their significance for the reconstruction of the Late Glacial environmental conditions (the Drawsko Lakeland, NW Poland)

84%

Paluszkiewicz R.

Quaestiones Geographicae

2011

tom 30

nr 3

Comparison of selected morphometric features of the heart of the wild boar and domestic swine

67%

Wysocki J. , Charuta A. , Podobas E. , Dolowska-Zabka L.

2010

tom 54

nr 3

An anatomical study was conducted on fresh hearts of 12 wild boar males and hearts of 12 domestic pigs (5 males and 7 females). Several linear and weight measurements of the heart were taken: height measured from the heart's apex up to the end of the atria, width measured in the area of the coronal fissure, circumference measured in the area of the coronal fissure, right ventricle weight, left ventricle weight, the weight of both atria, and the weight of both ventricles. All the linear measurements were made using sliding dividers with accuracy of up to 1 mm, the weight parameters were determined using laboratory scales with accuracy of up to 0.01 g. Statistical analysis (t-Tukey's test) showed that three groups of animals, selected for this study differed significantly in regard to body mass, age, and mass of right vetricle. However, younger domestic animals had higher body mass. Wild boars had higher right ventricle mass. Relative heart weight expressed as a percentage of body weight was over two fold higher in wild animals (0.59%) than in domestic ones (0.28%).

Some morphometric and chemotaxonomic features in the taxonomy of Onobrychis [Fabaceae] from Poland

67%

Cenci C. A. , Mizianty M.

Fragmenta Floristica et Geobotanica

1997

tom 42

nr 2