J. Straka

Publications82
h-index18
Citations1,184
Highly Influential Citations68
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Comprehensive phylogeny of apid bees reveals the evolutionary origins and antiquity of cleptoparasitism
TLDR
The phylogenetic analysis of the Apidae sheds light on the macroevolution of a bee family that is of evolutionary, ecological, and economic importance and indicates that 99% of cleptoparasitic apid bees form a monophyletic group.
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Review and identification of the cuckoo bees of central Europe (Hymenoptera: Halictidae: Sphecodes )
TLDR
An identification key for all 33 Sphe- codes Latreille, 1804 species known from central Europe is compiled and an identification key is compiled for the only available name for the taxon formerly identified as S. nomioidis Pesenko, 1979.
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Climatic Risk and Distribution Atlas of European Bumblebees
Bumble bees represent one of the most important groups of pollinators. In addition to their ecological and economic relevance , they are also a highly charismatic group which can help to increase the…
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Phylogeny of the bees of the family Apidae based on larval characters with focus on the origin of cleptoparasitism (Hymenoptera: Apiformes)
TLDR
The results suggest that the cleptoparasitism has evolved independently only six times within the family Apidae, and their similarities with hosts in morphology and pattern are probably the result of convergence and host–parasite co‐evolution than phylogenetic affinity.
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In search for a compromise between biodiversity conservation and human health protection in restoration of fly ash deposits: effect of anti-dust treatments on five groups of arthropods
TLDR
Total soil cover depleted the unique environment of fly ash and thus destroyed the high conservation potential of the deposits, but partial coverage still offered habitats for many of the most threatened species, as it showed by both regression and multivariate analyses, with a decrease of wind erosion.
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Lasioglossins: Three Novel Antimicrobial Peptides from the Venom of the Eusocial Bee Lasioglossum laticeps (Hymenoptera: Halictidae)
TLDR
Three novel structurally related pentadecapeptides, named lasioglossins, were isolated from the venom of the eusocial bee Lasioglossum laticeps and exhibited potent antimicrobial activity against both Gram‐positive and Gram‐negative bacteria, low haemolytic and mast cell degranulation activity, and a potency to kill various cancer cells in vitro.
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Early nest emergence of females parasitised by Strepsiptera in protandrous bees (Hymenoptera Andrenidae)
TLDR
It is documented that the time of emergence/activity in stylopised females follows the temporal trend of uninfected, protandrous males, and the potential adaptive value of the altered host behaviour for the parasite is ascribed to host manipulation.
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Stylopsal: The First Identified Female-produced Sex Pheromone of Strepsiptera
TLDR
A female-produced sex pheromone of Stylops muelleri was identified as an unusually branched saturated aldehyde (9R)-3, 5-syn-3,5,9-trimethyldodecanal, which gave identical chromatographic and mass spectrometric data as the natural phersomone and also was active in electroantennographic and behavioral assays.
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Generalist cuckoo bees (Hymenoptera: Apoidea: Sphecodes) are species-specialist at the individual level
TLDR
It is demonstrated that exactly as in the avian cuckoos, each female in both species of generalist bee parasites tends to attack just one host species.
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Neighbourhood Society: Nesting Dynamics, Usurpations and Social Behaviour in Solitary Bees
TLDR
It is suggested that nesting dynamics with regular nest switching and reusing reduces long-term and costly intraspecific aggression, a key factor for the origin and evolution of sociality.
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