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Potravní zdroje bezobratlých v Ardovské jeskyni a v jeskyni Domica - předběžné výsledky
Nováková, Alena ; Elhottová, Dana ; Krištůfek, Václav ; Lukešová, Alena ; Hill, P. ; Kováč, L. ; Mock, A. ; Luptáčik, P.
The chemistry (organic matter content and pH) of different substrates from the Ardovská and Domica Caves in the Slovak Karst National Park (Slovakia) and the composition of their microbial communities were studied. Differences in organic matter content and microbial communities were found between the substrates from the Domica and Ardovská Caves. A broad spectrum of photoautotrophic microorganisms (algae and cyanobacteria) was found in different cave microhabitats (cave sediment, rotten wood, earthworms casts and isopods faeces), but no algae were detected in the fresh bat droppings and in the intestinal tract of the isopod .i.M. graniger./i.. Microfungi and bacterial colonies play the primary role in transforming bat guano into a food source for saprophagous and microphytophagous invertebrates.
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Zajímavé a vzácné saprotrofní mikroskopické houby z exkrementů a ostatních substrátů jeskyně Domica a Ardovské jeskyně (NP Slovenský kras, Slovensko)
Nováková, Alena
A broad spectrum of saprotrophic microfungi representing possible food sources for cave invertebrates was isolated from different substrata (invertebrates, bat and marten excrements, bat guano, cave sediment, air) from the Domica and Ardovská Caves. .i.Pidoplitchkoviella terricola./i. and .i.Thielavia hyrcaniae./i. are rather rarely isolated micromycetes. The species interesting from the point of view of the colony appearance or microscopic properties were .i.Penicillium glandicola, Beauveria brongniartii, Chaetomium indicum, Penicillium hirsutum, Penicillium hordei, Rhinocladiella./i. sp., .i.Aspergillus versicolor, Echinobotryum./i. state of .i.Doratomyces stemonitis./i., and .i.Oidiodendron cerealis./i..
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Ovlivňuje obsah buněčných mastných kyselin a enzymů jeskynních bakterií potravní preferenci .i.Enchytraeus crypticus./i. (Oligochaeta, Enchytraeidae)?
Krištůfek, Václav ; Elhottová, Dana ; Šustr, Vladimír ; Lasák, R. ; Kováč, L. ; Mock, A. ; Luptáčik, P.
Cellular fatty acid screening (MIDI System) of 93 bacterial strains isolated from the Domica Cave in the Slovak Karst region ( Slovakia) showed that three bacterial strains (.i.Chryseobacterium./i. sp., .i.Enterobacter amnigenus, Rhodococcus./i. sp.) produce polyunsaturated fatty acids (PUFA) 18:3w6 and 20:4w6. These species (along with a non PUFA producer, .i.Rhizobium./i. sp.) were isolated from the gut content or body surface of .i.Mesoniscus graniger./i. (Frivaldsky, 1865) (Crustacea: Isopoda). Bacterial strains were tested for activity of nine saccharolytic enzymes. .i.Chryseobacterium./i. sp. showed amylase, maltase and cellobiase activity, other bacterial species only had amylase activity. As PUFA and enzymes may be essential for animal growth and development, colonies of the four strains were grown for further use in laboratory food selection and reproduction experiments with .i.E. crypticus./i..
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