Abstract
Co-speciation between host–parasite species is generally thought to result in mirror-image congruent phylogenies. For the last several centuries, many bat species have been turning synanthropic, especially those that are hosted by bedbugs in Europe. There is evidence of only limited gene flow from the population of people to the population of bats. This study was focused on comparison of survival, development, and the reproduction rate based on cross-feeding experiments. In our research, we used two bedbugs groups of Cimex lectularius—bat- and human-associated and respectively as specific/non-specific host bat and commercial human blood. Both lineages show different behavior according to their host preferences. During the bat blood experiment, we found significant differences between both human- and bat-associated bedbugs (Log rank test fourth χ 2 = 9.93, p > 0.05; fifth χ 2 = 11.33, p < 0.05), while no differences occurred with the human blood experiment between the survival levels. In molting, differences between both groups were significant particularly in the case of the bat blood experiment (fourth χ 2 = 5.91, p < 0.05). In the case of the bat blood experiment, we found a higher probability of molting in bat-associated groups than in human-associated groups. In the case of the human blood experiment, molting probability was stable in both specific and non-specific, showing similar pattern in both cases for all stages. Our results indicate an occurrence of two ecotypes within the one species C. lectularius. These findings support earlier data about morphological and mitochondrial DNA differences. The differentiation of both lineages fits the concept of specific host choice.
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Acknowledgments
We are very grateful to J. Gaisler for his valuable comments on the manuscript and Martin Toman for help with fieldwork and sampling bedbugs associated with human host. This study was supported by grants from the Ministry of the Environment and the Ministry of Education, Youth and Sports of the Czech Republic No. MSM0021622416,grant No. MUNI/A/0976/2009.
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Wawrocka, K., Bartonička, T. Two different lineages of bedbug (Cimex lectularius) reflected in host specificity. Parasitol Res 112, 3897–3904 (2013). https://doi.org/10.1007/s00436-013-3579-9
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DOI: https://doi.org/10.1007/s00436-013-3579-9