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13 results for “Myrmica rubra”
Data from: Genetic divergence between the sympatric queen morphs of the ant Myrmica rubra
Pairs of obligate social parasites and their hosts, where some of the parasites have recently diverged from their host through intraspecific social parasitism, provide intriguing systems for studying the modes and processes of speciation. Such speciation, probably in sympatry, has also been propounded in the ant Myrmica rubra and its intraspecific social parasite. In this species, parasitism is associated with queen size dimorphism, and the small microgyne has become a social parasite of the large macrogyne. Here, we investigated the genetic divergence of the host and the parasite queen morphs in 11 localities in southern Finland, using nuclear and mitochondrial markers of queens and workers. We formulated and tested four speciation-related hypotheses that differed in the degree of genetic divergence between the morphs. The queen morphs were genetically distinct from each other with little hybridization. In the nuclear data, when localities were nested within queen morphs in the hierarchical amova, 39% of the genetic variation was explained by the queen morph (standardized F'CT = 0.63, uncorrected FCT = 0.39), whereas 18% was explained by the locality (F'SC = 0.39, FSC = 0.29). This result corroborated the hypothesis of advanced sympatric speciation. In contrast, the mitochondrial DNA could not settle between the hierarchical levels of locality and queen morph, thus substantiating equally the hypotheses of incipient and advanced sympatric speciation. Together, our results support the view that the microgynous parasite has genetically diverged from its macrogynous host to the level of a nascent species.
Supplementary material 1 from: Michlewicz M, Tryjanowski P (2017) Anthropogenic waste products as preferred nest sites for Myrmica rubra (L.) (Hymenoptera, Formicidae). Journal of Hymenoptera Research 57: 103-114. https://doi.org/10.3897/jhr.57.12491
Study sites : Explanation note: General description of study localities, including the dates of investigation.
data and code for "Nest entrances, spatial fidelity, and foraging patterns in the red ant Myrmica rubra: a field and theoretical study"
<p>Data set and codes used for the results, figures and simulation of the paper "Nest entrances, spatial fidelity, and foraging patterns in the red ant <em>Myrmica rubra</em>: a field and theoretical study".</p>
Sugar preferences of Camponotus modoc and Myrmica rubra
<p>A stable source of carbohydrates is essential for the longevity of ant colonies. Foraging ants must select among carbohydrate resources, such as aphid honeydew, that vary based on sugar type, volume and concentration. Using Western carpenter ants, <i>Camponotus modoc, </i>and European fire ants, <i>Myrmica rubra </i>as model species, we tested the hypothesis that ant foraging on aphid honeydew is driven by aphid-specific sugars (unique sugars biosynthesized by aphids) and that ants will selectively consume particular mono,- di-, and tri-saccharides. In choice bioassays, we offered whole ant colonies with aqueous sugar solutions and measured their consumption. In <i>C. modoc</i>, common sugar constituents (rather than aphid-specific sugars) and sugar concentration affected consumption by ants. Colonies of <i>C. modoc </i>and <i>M. rubra</i> preferred fructose to other monosaccharides (xylose, glucose) and sucrose to other disaccharides (maltose, melibiose, trehalose). Conversely, when offered a choice between the aphid-specific trisaccharides raffinose and melezitose, <i>C. modoc</i> and <i>M. rubra</i> favored raffinose and melezitose, respectively.</p>
Figure 2 in Studies in European ant-decapitating flies (Diptera: Phoridae): ant alarm pheromone as host finding cue in Pseudacteon brevicauda, a parasite of Myrmica rubra (Formicidae: Myrmicinae)
Figure 2. Percentage of flies showing flight activity as a reaction to synthetic 3-octanone, nonanone and 3-octanol. Water was used as a control (n = 30 each).
Figure 1 in Studies in European ant-decapitating flies (Diptera: Phoridae): ant alarm pheromone as host finding cue in Pseudacteon brevicauda, a parasite of Myrmica rubra (Formicidae: Myrmicinae)
Figure 1. Percentage of alerted flies from the total number tested. Control (C), intact worker ants (A), crushed gaster and thorax (G + T), crushed head (H) and two crushed mandibular glands (MG).
Sugar preferences of Camponotus modoc and Myrmica rubra
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Data from: Genetic divergence between the sympatric queen morphs of the ant Myrmica rubra
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Data from: Evidence that microgynes of Myrmica rubra ants are social parasites that attack old host colonies
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Colony specificity and starvation-driven changes in activity patterns of the red ant Myrmica rubra
<p>Data collected in the experiment entitled "Colony specificity and starvation-driven changes of activity patterns in the red ant Myrmica rubra" and published by Oscar Vaes and Claire Detrain</p>
Figure 2 from: Michlewicz M, Tryjanowski P (2017) Anthropogenic waste products as preferred nest sites for Myrmica rubra (L.) (Hymenoptera, Formicidae). Journal of Hymenoptera Research 57: 103-114. https://doi.org/10.3897/jhr.57.12491
Figure 2 - Variation in median queen size (mesosoma length in mm) between control plots and plots with waste products in Myrmica rubra. Difference is statistically insignificant. Whiskers of the boxplot represents the range of minimum and maximum values.
Figure 1 from: Michlewicz M, Tryjanowski P (2017) Anthropogenic waste products as preferred nest sites for Myrmica rubra (L.) (Hymenoptera, Formicidae). Journal of Hymenoptera Research 57: 103-114. https://doi.org/10.3897/jhr.57.12491
Figure 1 - Variation of measured nest parameters between control plots and plots with waste products in Myrmica rubra. A colony density (P < 0.0001) B nest density (P < 0.0001) C number of queens per colony (P = 0.06) D number of queens per nest (P = 0.26) E number of workers per colony (P=0.32) F number of workers per nest (P = 0.06). Numbers are given as median per plot (per 100 m2), whiskers of the boxplot represent the range of minimum and maximum values.
Supporting data : Prophylactic avoidance of hazardous prey by the ant host Myrmica rubra
<p>As part of the publication process of our article "Prophylactic avoidance of hazardous prey by the ant host Myrmica rubra", we shared on Zenodo.org the dataset which underpins our results.</p>
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