The results of interspecific interactions in nematode Oswaldocruzia filiformis of the moor frog in floodplain habitats Irtysh river in 2012

Abstract

For the studying of interspecific interaction between nematodes Oswaldocruzia filiformis from moor frog the morphological measurement analysis was used. Body sizes of Oswaldocruzia filiformis femalesreached the maximum on the presence of 6-10 exemplars in the individual host. In the quantity 11-15 exemplars helminthes’ length and width ecreased until the sizes of single worm specimens, on the presence of 16-20 O.filiformis their body sizes decreasing was more significant, with the proportional decreasing of all structures sizes. Minimal absolute sizes of females were observed in the simultaneous presence more than 21 worm exemplars. The same dynamics of linear sizes was observed for the O.filiformis males – with the maximal length and width in the simultaneous presence of 6-10 exemplars and minimal sizes – with the parasitizing more than two dozens elminthesexemplars. Length of spicula of males didn’t dependent from their linear sizes.