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Contributions to the taxonomy, biogeography, ecology and pathogens of parasites (Diptera, Acari) of Old World bats
Ševčík, Martin ; Benda, Petr (advisor) ; Stanko, Michal (referee) ; Bartonička, Tomáš (referee)
The dissertation thesis presents contributions solving several faunistic, biogeographical, taxonomic, and phylogenetic problems of selected groups of bat parasites together with surveys of potential pathogens in some representatives of these parasitic groups linked to the bats of the Old World. In the first part of the thesis, the taxonomy of prostigmata mites - chiggers (Trombiculidae) - coming from Eurasia and Africa is elaborated. Results of a detailed morphological and morphometric study are the descriptions of five new taxa belonging to four genera: Chiroptella, Grandjeana, Rudnicula, and Trombicula. At the same time, the results revise the differentiation within the group Trombicula sensu stricto, summarize the findings of species of individual genera and correct the inclusions of the originally described species within individual genera, with the final output of creating identification keys to the genera. The first sketch of the results of the study of the relations between chiggers and bats is included in this section, representing the description of the specific links among individual segments of both groups. In addition, there are studies presenting new findings and morphometric examinations of velvet mite nymphs collected from bats in Indonesia, as well as morphometric data and...
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Changes in distributional range and ecology of bats realated to climate change
Pavlíková, Barbara ; Lučan, Radek (advisor) ; Bartonička, Tomáš (referee)
In the last few decades bats are affected by climate change. Changes in average temperatures affect their morphology, phenology, diversity and distribution. Changes in biotopes caused by anthropogenic influences are responsible for the loss of shelters and connectivity of habitats. Empirical data show us that the range expansion of many bat species are gradually shifting to higher latitudes or altitudes. Mathematical models predict that the bat diversity and richness around the world will decline. Some species will shift their ranges and some will shrink their range or even become extinct. Key words: chiroptera, bats, range shift, bioindicators, climate change
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Bioacoustic pattern of a bat community: seasonal dynamics of bat communities in the Kruger NP, SAR.
Staňková, Markéta ; Horáček, Ivan (advisor) ; Bartonička, Tomáš (referee)
Analyzes of bat echolocation calls enable to investigate diverse patterns of bat communities without the need for contact manipulation with individuals. The continuous all-night acoustic recordings provide standardised data open to quantitative comparisons and testing effects of diverse contextual factors upon bat community structure. The multidisciplinary project MOSAIK (Monitoring Savanna Biodiversity in Kruger NP) mapping patterns of variation in savanna communities under different spatial and temporal influences includes bats as one of the model groups. At standardized monitoring points of the project (covering 20 different areas, each containing triplet points differing in access to the water surface: permanent, seasonal and the crests without a water source), all-night acoustic recordings of bats were undertaken over two seasons (using Song Meter recorders SM4BAT). All records were analyzed with aid of Kaleidoscope Pro software and cluster identification technique (with an input database developed by Weier et al. 2018 and Taylor et al. 2020) controlled by manual checking. Multiple comparisons of diverse coenologic variables of the particular samples were performed together with testing effects of associated contextual variables (geographic setting and climatic currents, seasons, vegetation,...
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Trophic ecology of the greater mouse-eared bat (Myotis myotis)
Bendová, Barbora ; Andreas, Michal (advisor) ; Bartonička, Tomáš (referee)
In 2012 it was observed foraging ecology of the three males of greater mouse-eared bat (Myotis myotis), inhabiting individual roosts in the interior of road bridge near Bernartice, and the nearest nursery colony of the same species in the village Senožaty (district Pelhřimov). In the period April to September in Senožaty were made 14 collections at intervals of approximately 14 days and in the bridge near Bernartice at similar intervals were made 8 collections from each male in the period from May to September. From each collection were subsequently been analyzed 20 samples (pellets) by the traditional method of preparation of faeces. Overall it was from all the bats analyzed 760 samples, of which 280 from the nursery colony and 480 from males. Based on the analysis was found diet composition of individual bats and of the colony, where the overall character of the trophic niche of the greater mouse-eared bat, seasonal dynamics in it's diet composition, sex differences and individual differences between males were observed. From a point of view of it's hunting strategy the greater mouse-eared bat showed itself as a ground gleaner, in whose diet were dominated larger Coleoptera, of which the predominant component were large, flightless, mostly forest Carabidae, adding medium and smaller species of...
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Island evolution in bats
Holá, Barbora ; Hulva, Pavel (advisor) ; Bartonička, Tomáš (referee)
Order Chiroptera is the only mammalian taxon capable of powered flight. This key adaptation allows for high dispersion capabilities, therefore bats are often the only colonizers of remote islands. More than half of all bat species inhabit islands, and nearly a quarter of them are the islands' endemic organisms. They colonize islands around the entire world, being exempt from only very small, isolated or inhospitable islands.. Island biogeography has an extraordinary importance in many aspects of evolutionary and ecological disciplines. Because of its relative simplicity, as well as the impoverished nature of island biota, emerging interactions between island populations can be better observed compared to mainland. Species that might succumb to extinction due to competition on the mainland may survive on islands. Richness of island biota is subject to two opposing forces, colonization and extinction. A dynamic equilibrium occurs when the probability of colonization and extinction is equal, meaning the number of species is constant, but the composition of species may vary. Isolation, fragmented distribution, and the small size of island populations can lead to speciation, but can also conversely reduce genetic diversity, adaptive capabilities and ultimately cause extinction. The degree of isolation,...
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Social behaviour and acoustic communication in greater mouse-eared bat (Myotis myotis)
Porteš, Michal ; Jahelková, Helena (advisor) ; Bartonička, Tomáš (referee)
Order Chiroptera is characterized by great variability in foraging, roost and social strategies. Greater mouse-eared bat (Myotis myotis, Borkhausen 1797) is a model species of a bat in Europe and his seasonal organisation of population represents typical temperate bat cycle with females aggregated in large maternity colonies and solitery roosting males. Although the M.myotis is a model species, the majority of studies were focused on different aspects of maternity colonies biology and the biology of males is still poorly known. Recently founded aggregations of males of M. myotis in highway bridges allow to study social behaviour and acoustic communication of males on between individual level and discuss these findings with known information. While the bridge in Bernartice was inhabited by aggregation of males in individual roosts, in Voznice bridge we found besides males also a maternity colony of M. myotis. Harems of males were established from august until october. We found different pattern of seasonal roost occupancy in males with males with the highest level of mean occupancy having the highest level of female presence in roost. Vocalisation activity of males increased in august with highest level of activity in september. Males roosting closer to the flight entrance tended to have higher...
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Genealogical structure and breeding behaviour in Pipistrellus nathusii (Mammalia: Chiroptera) model population
Zieglerová, Anna ; Hulva, Pavel (advisor) ; Bartonička, Tomáš (referee)
56 6. SUMMARY This paper summarizes the results of a study in applying molecular techniques to analysis of social biology and the genealogical structure of bats. A population of Pipistrellus nathusii was investigated in the model Protected Landscape Area Trebonsko (South Bohemia). Systematic research of this species has been ongoing there since 1996. Unlike other species, which have been studied using similar research methods, this is a form whose annual life cycle and area distribution are characterized by seasonal long- distance migration of the entire population. Its social structure and mating system are not generally noted in species with similar characteristics. The object of the analysis was a group of 304 individuals, including 45 resident males, 98 adult females and 161 juveniles, captured in 3 Summer colonies during two consecutive seasons. From 15 verified micro-satellite markers, 4 of them, which a displayed standard high level of alelic polymorphism (24-85), were chosen for routine use. It has been shown, that the micro-satellite analysis employed enables highly reliable identification of individuals, and the identification of family relationships. The distribution of documented paternity illustrates that the multiple reproductive effect of certain males and the increased proportion in...
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