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153 results for “Formica”
Data to Richter et al. 2020 Comparative analysis of worker head anatomy of Formica and Brachyponera (Hymenoptera: Formicidae) in Arthropod Systematics & Phylogeny
<p>This dataset contains the ant head µCT-Sanning Datasets used for the article "Comparative analysis of worker head anatomy of <em>Formica</em> and <em>Brachyponera</em> (Hymenoptera: Formicidae)" by Richter et al. published in <em>Arthropod Systematics & Phylogeny </em>2020. In addition, the image plates from that article (in highest resolution as TIF files) and a series of supplementary 3D-volume render video files are deposited.</p> <p>The datasets for CASENT0709409, CASENT0709411 and CASENT0790267 are deposited as they were used in this study (with transformation to adjust the orientation of the ant head to the global axes and cropped to reduce file size) while CASENT0709419 is deposited as the original scanning result as it was not modified for the work in this article.</p> <p>Scanning details can be found in the materials and methods section of the article. Scanning parameters were as follows:</p> <p>Power (W): 3W all specimens</p> <p>Voltage (kV): 40kV all specimens</p> <p>Voxel Size: CASENT0709409: 1,1557 µm<sup>3</sup>; CASENT0709419: 1,2244 µm<sup>3</sup>; CASENT0709411: 2,5527µm<sup>3 </sup>; CASENT0790267: 2,8337 µm<sup>3</sup> </p> <p>Exposure Time (s): CASENT0709409: 25 s; CASENT0709419: 15 s; CASENT0709411: 7 s<sup> </sup>; CASENT0790267: 5 s</p> <p>Source Distance (mm): CASENT0709409: -9,5038 mm; CASENT0709419: -9,5321 mm; CASENT0709411: 10,038 mm<sup> </sup>; CASENT0790267: 13,0037 mm</p> <p>Detector Distance (mm): CASENT0709409: 46 mm; CASENT0709419: 43,0166 mm; CASENT0709411: 16,5043 mm<sup> </sup>; CASENT0790267: 18,0015 mm</p>
Fig. 4 in Changes In The Structure Of Nest Complexes Of The Red Wood Ants Formica Rufa And F. Polyctena (Hymenoptera, Formicidae) In Urban Forests
Fig. 4. Degradation of the Formica rufa complex No. 1 (Feofaniya) in terms of average height (4, A) and diameter (4, B) under conditions of intensive construction and recreation; 4, С, D — diameter and height near the nest complex of F. polyctena No. 4 (surroundings of the Observatory), under conditions of felling of the shrub layer and processing of fallen trunks and branches into wood chips.
Figure 4 in Changes In The Structure Of Nest Complexes Of The Red Wood Ants Formica Rufa And F. Polyctena (Hymenoptera, Formicidae) In Urban Forests
Figure 4 shows the degradation trends for the nest complexes of F. rufa No. 1 (4, A, B), F. polyctena No. 4 (4, C, D). For F. rufa No. 1, there was a sharp decrease in the average diameter of anthills in 2014, and on the contrary, an increase since 2015 (fig. 4, A). In 2016, this indicator remained at approximately the same level, and in 2021 it decreased again. In 2022, this nest complex
Fig. 1 in Changes In The Structure Of Nest Complexes Of The Red Wood Ants Formica Rufa And F. Polyctena (Hymenoptera, Formicidae) In Urban Forests
Fig. 1. Location of nest complexes of Formica rufa (diamonds), F. polyctena (triangles) on the territory of the city of Kyiv (Ukraine). The city limits are marked by a red line, the forest areas by dark grey. The numbers correspond to the serial number of each complex.
Pathogen prevalence modulates medication behavior in ant Formica fusca
<p><span>Ants face unique challenges regarding pathogens, as the sociality which has allowed them to form large and complex colonies also raises the potential for transmission of disease within these colonies. To cope with the threat of pathogens, ants have developed a variety of behavioral and physiological strategies. One of these strategies is self-medication, in which animals use biologically active compounds to combat pathogens in a way which would be harmful in the absence of them. <em>Formica fusca</em> ants are to date the only species of ants proven to successfully self-medicate against an active infection caused by a fungal pathogen by supplementing their diet with food containing hydrogen peroxide. Here, we build on that research by investigating how the prevalence of disease in colonies of <em>F. fusca</em> affects the strength of the self-medication response. We exposed either half of the workers of each colony or all of them to a fungal pathogen and offered them different combinations of diets. We see that workers of <em>F. fusca</em> engage in self-medication behavior even if exposed to a low lethal dose of a pathogen, and that the strength of that response is affected by the prevalence of the disease in the colonies. We also saw that the infection status of the individual foragers did not significantly affect their decision to forage on either control food or medicinal food as uninfected workers were also foraging on hydrogen peroxide food, which opens up the possibility of kin medication in partially infected colonies. Our results further affirm the ability of ants to self-medicate against fungal pathogens, shed new light on plasticity of self-medication and raise new questions to be investigated on the role self-medication has in social immunity.</span></p>
Fig. 2 in Una nueva cita ibérica para Formica bruni Kutter, 1967 (Hymenoptera: Formicidae)
Fig. 2.- Obrera de Formica bruni de Viadangos de Arbás, detalles. a.- Borde del clípeo, escala: 0,5 mm. b.- Pubescencia del espacio interocelar, escala: 0,1 mm. c.- Tibia trasera, escala: 1 mm. d.- Pilosidad de los ojos, escala: 0,1 mm.
Figure 3 in Effects of genetic relatedness, spatial distance, and context on intraspecific aggression in the red wood ant Formica pratensis (Hymenoptera: Formicidae)
Figure 3. Correlation between spatial distance and aggression levels in the field. Open circles correspond to monodomous colonies and filled circles correspond to the polydomous one.
Figure 1. Map showing the localities where F in Effects of genetic relatedness, spatial distance, and context on intraspecific aggression in the red wood ant Formica pratensis (Hymenoptera: Formicidae)
Figure 1. Map showing the localities where F. pratensis colonies were sampled for the analysis of genetic relatedness and tested for their aggressive behavior towards each other. The numbers denote the localities. 1: Balaban village (N 41°49ʹ18ʺ, E 27°40ʹ44ʺ) containing three nests; B1, B2, and B3, 2: Asilbeyli village (N 41°39ʹ32ʺ, E 27°13ʹ50ʺ), one nest (As), 3: Ulukonak village (N 41°39ʹ35ʺ, E 27°01ʹ52ʺ) one nest (U), 4: Doğanköy village (N 41°56ʹ12ʺ, E 26°41ʹ20ʺ) one nest (D), and 5: Ahmetler village (N 42°00ʹ37ʺ, E 27°11ʹ12ʺ), three nests; Ah1, Ah2, and Ah3.
Linked collectors and determiners for: Revision of the Nearctic endemic Formica pallidefulva group..
Natural history specimen data linked to collectors and determiners held within, "Revision of the Nearctic endemic Formica pallidefulva group.". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/62108056-3778-4e1d-9b87-4460737053dd">https://bionomia.net/dataset/62108056-3778-4e1d-9b87-4460737053dd</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/62108056-3778-4e1d-9b87-4460737053dd">https://gbif.org/dataset/62108056-3778-4e1d-9b87-4460737053dd</a>. Formatted as a Frictionless Data package.
Figs 8-11 in A Crataraea species associated with Formica chinensis (Coleoptera: Staphylinidae: Aleocharinae)
Figs 8-11: Crataraea myrmecophila nov.sp.: (8) vertex; (9) median portion of pronotum; (10) male sternite VIII; (11) female sternite VIII. Scale bars: 0.1 mm.
Figs 1-7 in A Crataraea species associated with Formica chinensis (Coleoptera: Staphylinidae: Aleocharinae)
Figs 1-7: Crataraea myrmecophila nov.sp.: (1) habitus; (2) forebody; (3) right elytron; (4-5) median lobe of aedeagus in lateral view; (6) ventral process of median lobe in ventral view; (7) spermatheca. Scale bars: 1-2: 1.0 mm; 3-7: 0.2 mm.
Fig. 2 in Sauvegarde d'une fourmilière de Formica pratensis Retzius, 1783 (Hymenoptera, Formicidae) par translocation
Fig. 2. Illustrations des étapes clés de la translocation de la fourmilière de Formica pratensis réalisée à Gimel en date du 23 mars 2016. (Photos Jérôme Pellet et Vincent Sonnay)
Fig. 1. A in Sauvegarde d'une fourmilière de Formica pratensis Retzius, 1783 (Hymenoptera, Formicidae) par translocation
Fig. 1. A gauche, ouvrière de Formica pratensis photographiée sur le dôme de la fourmilière transplantée. (Photo Jérôme Pellet) A droite, carte de la distribution de cette espèce en Suisse (répartition lacunaire reflétant les zones où des inventaires ont été réalisés). (© CSCF)
Fig. 1 in Osservazione di un'incursione della formica amazzone Polyergus rufescens (Latreille, 1798) a Roveredo (GR)
Fig. 1. Fila di operaie di Polyergus rufescens Fig. 2. Polyergus rufescens con pupa tra le man- (Latreille, 1798) su un muretto a Roveredo (GR). dibole e Serviformica che si difende. (Foto Anya (Foto Anya Rossi-Pedruzzi) Rossi-Pedruzzi)
Fig. 2 in Prédation des tiques Ixodes ricinus par les fourmis des bois Formica pratensis - expérience préliminaire
Fig. 2 (à droite). Tiques Ixodes ricinus. De bas en haut: larve, nymphe, mâle adulte et femelle adulte (1 carré = 1 mm2). (Photo Olivier Rais, Université de Neuchâtel)
Fig. 4 in Red wood Ants (Formica rufa-group) prefer mature pine forests in Variscan granite environments (Hymenoptera: Formicidae)
Fig. 4 – Numbers of RWA nests versus medium tree age of primary tree species (TS) for a) MGBSF and b) FBBSF
Fig. 2 in Red wood Ants (Formica rufa-group) prefer mature pine forests in Variscan granite environments (Hymenoptera: Formicidae)
Fig. 2 – Tectonic setting of both study areas with a, major tectonic units, faults (black lines) taken from literature (see list under reference section geological maps), b, detailed geologic setting of the Münchsgrün (MG), and c, Falkenberg (FB) study areas with FB forest sections (1-8). In MG area, the older Mitterteich/Steinwald Granite is overlain by Miocene/Pliocene basin-filling sediments.
Fig. 3 in Red wood Ants (Formica rufa-group) prefer mature pine forests in Variscan granite environments (Hymenoptera: Formicidae)
Fig. 3 – In total mapped areas (MG tot; FB tot) and mapped areas within the borders of BSF (MGBSF; FBBSF) for a) MG and b) FB study area.
Fig. 5 in Red wood Ants (Formica rufa-group) prefer mature pine forests in Variscan granite environments (Hymenoptera: Formicidae)
Fig. 5 – Nest height classes[m] versus type of nest material (%) for a, c, spruce, and b, d, pine as primary tree species (TS) in MGBSF and FBBSF.
Fig. 1 – a in Red wood Ants (Formica rufa-group) prefer mature pine forests in Variscan granite environments (Hymenoptera: Formicidae)
Fig. 1 – a, Position of both study areas within Germany close to the Czech border; b, detailing location in the Oberpfälzer Lake district in Tirschenreuth county, NE Bavaria.
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