Ticks and mosquitoes as vectors of Borrelia burgdorferi s. l. in the forested areas of Szczecin.

The aim of the study was to determine the infection level of adult forms and larvae of ticks and mosquitoes with Borrelia burgdorferi in the forested areas of Szczecin. A total of 1699 ticks Ixodes ricinus, including 1422 nymphs, 277 adult forms and 2862 mosquito females representing the genera Aedes (89.6%) and Culex (10.

[Limitation in the population of parasitic geohelminths by saprotrophic soil fungi and their secretions].

Introduction: The aim of the study was to examine the effect of mould fungi isolated from soil and of two of their metabolites, aflatoxin G1 and ochratoxin A, on the embryonic development of eggs and mortality of larvae of Ascaris suum. An attempt was made to demonstrate synergism between fungi species in the action on embryogenesis of Ascaris suum.

Material And Methods: Fungi were isolated from soil and cultured on the standard Czapek-Dox agar medium at 26 degrees C for 60 days.

[The influence of the Metarhizium fungi on the embryonic development of Ascaris suum].

Purpose: The present study focused on the effect of two fungal species Metarhizium flavoviride and Metarhizium anisopliae on the embryonic development and viability of Ascaris suum larvae.

Results: Microscope examination revealed that the presence of the mycelium inhibited the egg development, compared to control. The fungus-exposed eggs featured zygote vacuolisation, irregular blastomere cleavage, and morphological disturbances in the stages of blastula, gastrula, and larva.

Effect of electric power network frequency magnetic field on embryonic development of Ascaris suum (Nematoda).

Fertilised Ascaris suum eggs were subjected to an alternating electromagnetic field of frequency 50 Hz and density 2 mT for 60 days. The developing embryos in both control and experimental cultures were examined daily under a microscope. The experiment resulted in an accelerated rate of embryogenesis in the eggs incubated in the electromagnetic field, higher rates of malformed embryos as well as much higher mortality rate of L2 larvae.