Karolina Kuszewska

Karolina Kuszewska
Jagiellonian University | UJ · Institute of Environmental Sciences

PhD

About

49
Publications
6,861
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436
Citations
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January 2012 - present
Jagiellonian University

Publications

Publications (49)
Article
Some workers of the honeybee show high alcohol dehydrogenase (ADH) levels and high resistance to the sedative effects of alcohol, yet it is unknown whether these two issues are directly related. Here we looked for a link between ADH levels and sedation latency in response to alcohol exposure. We used molecular and immunoblotting methods to investig...
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The proteolytic and antioxidant systems are important components of humoral immunity, and these biomarkers indicate the immune status. These compounds are synthesized in the bees' fat body and released into the hemolymph. Their functions maintain the organism's homeostasis and protect it against adverse environmental factors (including pathogens)....
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Social insect societies are characterized by a high level of organization. This is made possible through a remarkably complex array of pheromonal signals produced by all members of the colony. The queen’s pheromones signal the presence of a fertile female and induce daughter workers to remain sterile. However, the lack of the queen mandibular phero...
Article
In eusocial Hymenoptera, the laying of male-determined eggs by workers in an unrelated colony can be a powerful strategy for increasing direct fitness benefits. A recent study showed that honeybee rebels, which are workers that develop under queenless conditions and have high reproductive potential, drift to foreign colonies, with a preference for...
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Rebel workers develop from eggs laid by the previous queen, before it went swarming and left the colony orphaned, until the emergence of a new queen. In contrast to normal workers developing in the queen’s presence, rebels are set to reproduce and avoid rearing of successive bee generations. They have more ovarioles in their ovaries, as well as mor...
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The widely accepted hypothesis in life history evolution about the trade-off between fecundity and longevity is not confirmed by long-living and highly fecund queens in eusocial insects. The fact that the queens and facultatively sterile workers usually arise from genetically identical eggs but differ in DNA methylation makes them a good model for...
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The physiological state of an insect depends on efficiently functioning immune mechanisms such as cellular and humoral defenses. However, compounds participating in these mechanisms also regulate reproductive caste formation and are responsible for reproductive division of labor as well as for labor division in sterile workers. Divergent reaction o...
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Evolution has created different castes of females in eusocial haplodiploids. The difference between them lies in their functions and vulnerability but above all in their reproductive potentials. Honeybee queens are highly fertile. On the other hand, the workers are facultatively sterile. However, rebel workers, i.e. workers that develop in a queenl...
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Ectotherms usually require a narrow range of thermal conditions for development; thus, parental selection of oviposition sites is crucial. In a field experiment, we investigated female solitary red mason bee (Osmia bicornis) preferences for potential nest site temperatures and their effects on offspring development. The results showed that bees det...
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Learning ability, which allows individuals to adjust their behaviour to changing environmental conditions, has a considerable positive impact on individual fitness. However, in addition to benefits, learning also incurs a cost, which means that investment in learning and maintaining learned skills can lead to trade-offs impacting other biological f...
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Various animal models are used in the study of alcoholism, with the honeybee (Apis mellifera L.) among them. Here, we tested the hypothesis that foragers show higher intoxication resistance to alcohol than nurses, an issue thus far not investigated. To this end, we measured the latency to full sedation when exposed to alcohol in foragers, nurses an...
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Biological invasions are a major human induced global change that is threatening global biodiversity by homogenizing the world's fauna and flora. Species spread because humans have moved species across geographical boundaries and have changed ecological factors that structure ecosystems , such as nitrogen deposition, disturbance, etc. Many biologic...
Article
Carbon dioxide is a relatively inert gas produced as a by-product of cellular respiration and is often used during various experimental manipulations of bees, as well as in beekeeping practices. However, a high concentration of carbon dioxide can affect the fitness of insects and even shorten their lives. Here, we tested the impact of exposure to c...
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A recent study showed that worker larvae fed in a queenless colony develop into another female polyphenic form—rebel workers. The rebel workers are more queen-like than normal workers because they have higher reproductive potential revealed by more ovarioles in their ovaries. However, it was unclear whether eggs laid by rebel workers avoided worker...
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The honeybee is one of several eusocial species with a complex set of anatomical, physiological, and behavioural traits that are correlated with foraging preferences. Sensory sensitivity to sucrose is associated with the foraging preferences of workers, with individuals that are less sensitive to sugar preferring to forage for nectar and those that...
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Worker honeybees may reproduce in either their own or foreign colonies; the latter situation is termed intraspecific reproductive parasitism (IRP). In this study, we compared the tendency for IRP between normal honeybee workers, which are characterized by a relatively low reproductive potential, and “rebel workers”, a recently discovered subcaste o...
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In eusocial insect colonies, workers have individual preferences for performing particular tasks. Previous research suggests that these preferences might be associated with worker reproductive potential; however, diferent studies have yielded inconsistent results. This study constitutes the frst comparison of foraging preferences between geneticall...
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The honeybee is being developed as a simple invertebrate model for alcohol-related studies. To date, several effects of ethanol consumption have been demonstrated in honeybees, but the tolerance effect, one of the hallmarks of alcohol overuse, has never been shown. Here, we confirm our hypothesis that the response to ethanol (in terms of motor impa...
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Recently, antlion larvae with greater behavioural asymmetry were shown to have improved learning abilities. However, a major evolutionary question that remained unanswered was why this asymmetry does not increase in all individuals during development. Here, we show that a trade-off exists between learning ability of larvae and their hunting efficie...
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The honeybee is one of several eusocial species in which the queen is typically the only reproductive member of the colony; worker reproduction is mostly restricted to queenless colonies. Because workers cannot mate, they lay unfertilized eggs, which develop into males. A recent study showed that in queenless colonies, which arise after swarming, w...
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The least understood aspects of the nutritional needs of bees are the elemental composition of pollen and the bees' need for a stoichiometrically balanced diet containing the required proportions of nutrients. Reduced plant diversity has been proposed as an indirect factor responsible for the pollinator crisis. We suggest stoichiometric mismatch re...
Data
All of the pollen taxa composing the studied PPMs. % indicates the percentage of grains of a particular taxon in the total counted number of pollen grains in a particular PPM. (XLSX)
Data
Measured relative element contents in 9 pollen pellet morphospecies (PPMs, 12 elements). (XLSX)
Data
Trophic stoichiometric ratios (TSRx = (C:X)Pollen/(C:X)Bee), where C = Carbon content and X = Content of element x in bees and the potential biomass source of larvae. Means, maxima, minima and percentiles were estimated using randomized resampling (N = 3000). TSR values above 4 denote limitations on development. Yellow indicates the values above th...
Data
Measured relative element contents in 3 honeybee castes/sexes (12 elements). (XLSX)
Data
Absolute element contents in 3 honeybee castes/sexes (12 elements). (XLSX)
Data
Concentrations of elements in various hand-collected pollen and honey bee-collected pollen pellets, as reported in the literature. All the values are given in ppm d.m. Full citations are given in the second sheet. (XLSX)
Article
Social insects, especially honeybees, have received much attention in comparative gerontology because of their peculiar and flexible ageing patterns that differ across genetically similar individuals. The longevity of honeybee individuals varies and depends on patterns of gene expression during development; females developing into reproductive indi...
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Certain ants perform rescue behaviour for other ants that require help, and the expression of rescue behaviour is hypothesized to depend on signals (“calls for help”) sent by the imperilled individuals. We studied whether the mandibular glands were involved in the elicitation of rescue behaviour in Formica cinerea Mayr ants. In the first experiment...
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Brain lateralization is hypothesized to improve the efficiency of information processing. Here, we found that some Myrmeleon bore antlion larvae showed individual asymmetry in righting from a supine to normal position over one side of their body, which can be considered a reflection of greater brain lateralization. We demonstrated that these behavi...
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Honeybee workers develop from fertilised eggs, but those reared in a queenless colony develop into ‘rebel’ workers, which are more queen-like than typical workers. Rebels develop after an old queen leaves with a swarm and before a new queen hatches. We hypothesised that larval food lacking queen mandibular pheromones trigger the rebel phenotype. La...
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Learning abilities are exhibited by many animals, including insects. However, sedentary species are typically believed to have low capacities and requirements for learning. Despite this view, recent studies show that even such inconspicuous organisms as larval antlions, which employ an ambush predation strategy, are capable of learning, although th...
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In the honeybee, diploid larvae fed with royal jelly develop into reproductive queens, whereas larvae fed with royal jelly for three days only and subsequently with honey and pollen develop into facultatively sterile workers. A recent study showed that worker larvae fed in a queenless colony develop into another female polyphenic form: rebel worker...
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The spread of invasive alien plants has considerable environmental and economic consequences, and is one of the most challenging ecological problems. The spread of invasive alien plant species depends largely on long-distance dispersal, which is typically linked with human activity. The increasing domination of the internet will have impacts upon a...
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Researchers in many fields would like to understand the determinants of risk-taking. Social insects are an excellent model for examining them since the tasks they perform bear different risks. Some honeybee (Apis mellifera) workers do not forage for nectar or pollen; instead, they take on the extreme risk of robbing honey from other bee nests. In t...
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Hamilton 1964). Podstawą teorii Hamiltona jest nierówność: c/b < r, w której c to koszt altruisty, b zysk bior-cy zachowania altruistycznego, natomiast r to współczynnik pokrewieństwa pomiędzy altruistą a biorcą, mierzony udziałem ich wspólnych genów pochodzących od wspól-nego niedawnego przodka. Nierówność ta określa warunki, w których altruistycz...
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According to kin selection theory, the colony kin structure of eusocial insects motivates workers' altruistic behaviors and therefore their sterility or restricted reproduction [1 • Hamilton W.D. The genetical evolution of social behaviour. I.J. Theor. Biol. 1964; 7: 1-16 • Crossref • PubMed • Scopus (8567) • Google Scholar ]. Indeed, theory and...
Article
Under the age-related division of labour of a honeybee colony, workers participate first in safe inside-nest tasks and then switch to risky outside-nest foraging. However, honeybees show great plasticity during behavioural development: their hive-to-field transition can be accelerated, delayed or even reversed in response to changes in colony condi...

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Projects

Projects (2)
Project
For all bee species, the pollen quality determines the overall quality of the larval food, influences the development of individuals and shapes their populations. However, not all plants produce pollen that fully satisfies the nutritional requirements of bees. Lack of understanding of the nutritional requirements of bees may lead to unintended negative effects of conservation efforts. Ecological stoichiometry provides an approach to better understand the nutritional constraints on growing and developing organisms and their colonies and populations. It makes reference to elements that, if scarce in the environment, prevent the construction of biologically important organic molecules. The least understood aspect of the nutritional requirements of bees concerns stoichiometric balancing and the need for adequate ratios of nutritional elements in consumed food. The goal of this project is to determine the likely limitations imposed on wild bees by the lack of nutritionally balanced pollen. This project asks if and how floral diversity, particularly the accessibility of nutritionally desirable key species, may influence bee populations. Studied are concentrations and stoichiometry of 12 elements (C, N, S, P, K, Na, Ca, Mg, Fe, Zn, Mn, and Cu) in 2 bee species (mason bee: Osmia bicornis and honeybee: Apis mellifera carnica, considering various castes and sexes) and in their food sources, considering various species of pollen.