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Frank Johansson

Sweden
As seen in: Nature, Wiley Online Library, Ilta-Sanomat
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Articles by Frank Johansson

Temperature-driven shifts in foraging behaviour during larval development in a dragonfly - Scientific Reports

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By Frank Johansson, Jolan Hogreve
| Nature Verified
Abstract Predatory performance of dragonfly larvae is influenced by a multifaceted interplay of external factors such as temperature, prey density and interspecific competition, and life history traits like age and size. We investigated the relative impact of these factors and traits on the prey-capture behaviour of Sympetrum striolatum larvae i.e., the number of strikes, captures and capture success.
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Potential Effects of Climate Warming on Density‐Dependent Growth and Mortality in a Cannibalistic Ectotherm (Sympetrum vulgatum: Odonata)

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By Frank Johansson, Nele Breitkreutz
| Wiley Online Library Verified
Filename Description fwb70168-sup-0001-DataS1.Rapplication/Rstudio, 4.8 KB Data S1: fwb70168-sup-0001-DataS1.R. fwb70168-sup-0002-Supinfo.docxWord 2007 document , 1.1 MB Figure S1: Experimental set-up of the tanks (left side) and in the microcosms (right side). The temperature tanks had 3 replicates. The density treatments were had 8 replicates per temperature and were distributed between the different tanks. Table S1: Results of the Tukey's tests on growth rate.
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Effects of temperature and resource level on interspecific interactions in two species of Odonata larvae

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By Lisa Stahl, Frank Johansson
| Wiley Online Library Verified
1 INTRODUCTION Accumulating evidence suggests that climate change can affect interspecific species interactions (Suhling & Suhling, 2013; Tylianakis et al., 2008). These interaction effects result from various causes, one being the difference in temperature optima of species across several aspects, such as growth and development, metabolic rate and activity.
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Phylogeography and larval spine length of the dragonfly Leucorhinia dubia in Europe

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By Frank Johansson, Institut für Biologie, Peter Halvarsson, Dirk J. Mikolajewski
| PLOS
Presence or absence of predators selects for different kind of morphologies. Hence, we expect variation in traits that protect against predators to vary over geographical areas where predators vary in past and present abundance. Abdominal larval spines in dragonfly larvae provide protection against fish predators. We studied geographical variation in larval spine length of the dragonfly Leucorrhinia dubia across Western Europe using a phylogenetic approach.
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