Jan Zima Jr

Jan Zima Jr
University of South Bohemia in České Budějovice · Department of Parasitology (KPA)

PhD

About

22
Publications
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236
Citations

Publications

Publications (22)
Article
Full-text available
Background: Kissing bugs (Triatominae) are blood-feeding insects best known as the vectors of Trypanosoma cruzi, the causative agent of Chagas' disease. Considering the high epidemiological relevance of these vectors, their biology and bacterial symbiosis remains surprisingly understudied. While previous investigations revealed generally low indiv...
Preprint
Full-text available
Background: Kissing bugs (Triatominae) are blood-feeding insects best known as the vectors of Trypanosoma cruzi, the causative agent of Chagas' disease. Considering the high epidemiological relevance of these vectors, their biology and bacterial symbiosis remains surprisingly understudied. While previous investigations revealed generally low indivi...
Article
The systematics of single‐celled cyanobacteria represents a major challenge due to morphological convergence and application of various taxonomic concepts. The genus Cyanothece is one of the most problematic cases, as the name has been applied to oval‐shaped coccoid cyanobacteria lacking sheaths with little regard to their phylogenetic position and...
Article
Full-text available
There are several places in the world where the level of natural radiation is unusually high, such as some regions of Ramsar and Abegarm-e-Mahallat in Iran. Such places are still insufficiently explored in terms of their biodiversity. In this study, strains isolated from six geothermal springs with elevated natural radiation were investigated. The...
Article
Full-text available
Escalation (macroevolutionary increase) or divergence (disparity between relatives) in trait values are two frequent outcomes of the plant-herbivore arms race. We studied the defences and caterpillars associated with 21 sympatric New Guinean figs. Herbivore generalists were concentrated on hosts with low protease and oxidative activity. The distrib...
Article
Full-text available
A highly divergent 16S rRNA gene was found in one of the five ribosomal operons present in a species complex currently circumscribed as Scytonema hyalinum (Nostocales, Cyanobacteria) using clone libraries. If 16S rRNA sequence macroheterogeneity among ribosomal operons due to insertions, deletions or truncation is excluded, the sequence heterogenei...
Data
Characterization of five distinct operons based on 16S-23S ITS regions recovered from two ribosomal operon types in Scytonema hyalinum species cluster. Color coded regions are as follows: leader (blue-block); D1-D1' helix (first green block); D2 (first yellow block); D3 (second yellow block); tRNA-Ile (first red block, when present); V2 helix (seco...
Data
Alignment of bases consistently variable between operons in Scytonema hyalinum. Color coding: yellow = consensus bases consistent with Type 2 operons; blue = consensus bases consistent with Type 1 operons; green = consensus bases unique to Brasilonema; gray = variable bases not consistent with any consensus base. Question marks = missing data. Heli...
Data
Summary of p-distance values for 20 Scytonema strains for which both operons were observed, and for which long reads were recovered (1170–1485 nucleotides), with comparisons also to eight Brasilonema strains. Comparisons between the operons within strain are given in first column (blue highlight). Comparisons among Type 2 operons among the 20 strai...
Data
Summary of NCBI accession numbers for rbcLX, rpoC1, and nifD nucleotide sequences obtained in this study. (PDF)
Article
Full-text available
Much of the world's insect and plant biodiversity is found in tropical and subtropical 'hotspots', which often include long elevational gradients. These gradients may function as 'diversity pumps' and contribute to both regional and local species richness. Climactic conditions on such gradients often change rapidly along short vertical distances, a...
Article
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Tapinoma melanocephalum is a worldwide distributed, highly invasive ant species. It lives in close association with human societies and its distribution is human-mediated in large measure. The geographical origin of this ant species is unknown, but its introduction in areas previously devoided of its presence can represent a threat to the native bi...
Article
Full-text available
Special conditions are required for genetic differentiation to arise at a local geographical scale in the face of gene flow. The Natal multimammate mouse, Mastomys natalensis, is the most widely distributed and abundant rodent in sub-Saharan Africa. A notorious agricultural pest and a natural host for many zoonotic diseases, it can live in close pr...
Article
Full-text available
Spatial isolation and geological history are important factors in the diversification and population differentiation of species. Here we describe distributional patterns of ants in the genus Acropyga across Papua New Guinea (PNG), a highly biodiverse but little studied region. We estimate phylogenetic relationships among currently recognised specie...
Article
Full-text available
Eight polymorphic microsatellite loci were developed and characterized for the Mylothris jacksoni knutsoni, an endemic butterfly of endangered montane habitats of the Gulf of Guinea Highlands, West/Central Africa. The loci were tested for polymorphism in 30 individuals from the Nkogam Massif, western Cameroon. The detected numbers of alleles per lo...
Article
Full-text available
Nine polymorphic microsatellite loci were developed and characterized for the Rosalia longicorn, an endangered icon of European saproxylic biodiversity. The detected number of alleles per locus ranged from 2 to 4, and the observed and expected heterozygosities varied from 0.044 to 0.622, and from 0.086 to 0.613, respectively. All loci were in Hardy...
Article
Full-text available
The Niobe Fritillary, Argynnis niobe, is a habitat specialist and as a consequence is highly endangered in contemporary Europe. To investigate its genetic diversity and population structure, 10 polymorphic microsatellite loci were developed and characterized, using a recently developed pyrosequencing method. The number of alleles per locus ranged f...
Article
Full-text available
The taxonomy and distribution of rodents in Zambia was comprehensively summarized in 1978 by W.F.H. Ansell in his excellent book Mammals of Zambia. Despite the fact that during the last three decades many new taxonomic revisions of African rodents were published and extensive new material collected, not much work has been done on Zambian rodents si...
Article
Full-text available
The only autochthonous population of Tatra chamois (Rupicapra rupicapra tatrica) occurs in the Tatra Mountains (northern Slovakia and southern Poland). Another population has been introduced to the Low Tatra Mts., while Alpine chamois (R. r. rupicapra) has been introduced to the neighbouring mountain ranges, Vel'ká Fatra and Slovenský raj. All thes...

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