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43 results for “Messor”
Morphology and load transport behaviour of the seed-harvesting ant Messor barbarus Linnaeus 1767
<p>This Excel file contains two datasets. The first dataset (sheet “Morphometric data”) gives the measure of thorax length, body mass as well as the mass of main body segments of 57 individual workers of the ant species <em>Messor barbarus</em> Linnaeus 1767. The workers originated from a colony collected in Saint-Hippolyte, France (42°80 N, 2°98 E) in October 2013. The second dataset (sheet “Transportation data”) relates to observations aiming at investigating the efficiency of <em>M. barbarus</em> workers when transporting pieces of dry pasta on their foraging trails. The data gives the body mass, the characteristics of the item transported, the transportation method (carry or drag), as well as the time required to travel a distance of 1m for 239 individual workers from five colonies located on the campus of the Universitat Autònoma de Barcelona, Spain (41°30′00N, 2°06′49E). For each ant followed the air temperature at ground level is also indicated.</p>
Fig. 34. Messor ebeninus Santschi, 1927 in Faunal composition, diversity, and distribution of ants (Hymenoptera: Formicidae) of Dhofar Governorate, Oman, with updated list of the Omani species and remarks on zoogeography
Fig. 34. Messor ebeninus Santschi, 1927, major worker (CASENT0922882, AntWeb.org (Michele Esposito)). A. Body in profile. B. Head in full-face view. C. Distribution map.
Figure 3 in The impact of predation by the myrmecophagous spider Zodarion elegans (Araneae: Zodariidae) on the activity pattern of the Mediterranean harvester ant Messor wasmanni (Hymenoptera: Formicidae)
Figure 3 Foraging activity of ants leaving the nest in correlation with absence/presence of Z. elegans individuals. Activity per day was measured as the number of leaving plus returning worker ants per min in a half-hour intervals; counts were summarized per day (0 = absence of Z. elegans, 1 = presence of Z. elegans).
Figure 5 in The impact of predation by the myrmecophagous spider Zodarion elegans (Araneae: Zodariidae) on the activity pattern of the Mediterranean harvester ant Messor wasmanni (Hymenoptera: Formicidae)
Figure 5. Tasks performed by marked foragers inside the nest when nest entrances were closed due to predation pressure. The number of workers per activity was summarized during the duration of three perturbation experiments. Per experiment 30 workers – 10 Minor-workers, 10 Medium-workers and 10 Major-workers – were marked.
Figure. 4 in The impact of predation by the myrmecophagous spider Zodarion elegans (Araneae: Zodariidae) on the activity pattern of the Mediterranean harvester ant Messor wasmanni (Hymenoptera: Formicidae)
Figure. 4 Foraging activity of ants returning to the nest in correlation with absence/presence of Z. elegans individuals. Scores were taken during half-hour intervals (0 = absence of Z. elegans, 1 = presence of Z. elegans).
Figure 4 in Native food spectrum, size-matching and foraging efficiency of the Mediterranean harvester ant Messor wasmanni (Hymenoptera: Formicidae)
Figure 4. Scatter diagram load ratio versus ant size. The load ratio was calculated as follows: ant size (head width) + load size/ant size. Data are from random samples of returning foragers of a single M. wasmanni colony. One dot represents one observation (N = 776). Linear regression analysis revealed a low negative correlation (R² = 0.14, p = 0.0001) between ant size and load ratio. The larger the worker size class, the smaller the range in the load ratio. Residuals from regressions were approximately normally distributed around zero in all cases.
Figure 5 in Native food spectrum, size-matching and foraging efficiency of the Mediterranean harvester ant Messor wasmanni (Hymenoptera: Formicidae)
Figure 5. Mean foraging efficiency (in %) per day. Calculations were performed separately per size class and per season. Foraging efficiency varied considerably over the seasons and between size classes. Sample size represented by numbers in bars. Minor = minor-sized workers, Media = media-sized workers, Major = major-sized workers.
Figure 1 in The impact of predation by the myrmecophagous spider Zodarion elegans (Araneae: Zodariidae) on the activity pattern of the Mediterranean harvester ant Messor wasmanni (Hymenoptera: Formicidae)
Figure 1. Frequency of Z. elegans individuals found within a distance of max. 0.5 m to active/inactive ant colonies in a) spring 2009, b) summer 2009 and c) autumn 2009 (1 = active colonies, 0 = inactive colonies).
Figure 3 in Native food spectrum, size-matching and foraging efficiency of the Mediterranean harvester ant Messor wasmanni (Hymenoptera: Formicidae)
Figure 3. Scatter diagram load size versus ant size. Data are from random samples of returning foragers of a single M. wasmanni colony. One dot represents one observation (N = 776). Linear regression analysis revealed a very low positive correlation (R² = 0.02, p = 0.0001) between ant size and load size, indicating only a small tendency for majorsized workers to carry larger loads than minor-sized workers. Residuals from regressions were approximately normally distributed around zero in all cases.
Figure 2 in The impact of predation by the myrmecophagous spider Zodarion elegans (Araneae: Zodariidae) on the activity pattern of the Mediterranean harvester ant Messor wasmanni (Hymenoptera: Formicidae)
Figure 2 Flow diagram of nest entrance closure in response to prey capture by the spider Z. elegans. In total, four experiments were performed with an overall duration of 100 days (Trial 1: n = 20, Trial 2: n = 30, Trial 3: n = 30, Trial 4: n = 20, n(total) = 100). The capture of M. wasmanni workers by Z. elegans is necessary to prompt ants to end aboveground activity and close nest entrances. By contrast, the presence of spiders in the formicarium alone was not sufficient to prompt ants to close nest entrances after aboveground foraging activity ceased.
Figure. 1 in Native food spectrum, size-matching and foraging efficiency of the Mediterranean harvester ant Messor wasmanni (Hymenoptera: Formicidae)
Figure. 1. Overview of the topics discussed in the paper. Surface activity was analysed at both colony level and individual level.
Figure 2 in Native food spectrum, size-matching and foraging efficiency of the Mediterranean harvester ant Messor wasmanni (Hymenoptera: Formicidae)
Figure 2. Frequency distribution of harvested material in percent (May, July-August and October 2009). During periods of aboveground activity, returning foragers carrying food items and other materials were collected at random from foraging trails 10 cm far from the nest entrances.
Fig. 2 in Soluble proteins in Messor structor (Latreille, 1798) (Hymenoptera: Formicidae) populations from Bulgaria - genetic variability and possible usage as population-genetic markers
Fig. 2. Spectrum of soluble proteins of M. structor workers (7.5% PAGE): a. Elenovo population; b. Tsalapitsa population.
Fig. 3. a in Soluble proteins in Messor structor (Latreille, 1798) (Hymenoptera: Formicidae) populations from Bulgaria - genetic variability and possible usage as population-genetic markers
Fig. 3. a. UPGMA dendrogram (Sneath et al. 1973); b. Neighbour-joining dendrogram (Saitou & Nei 1987).
DataSet from H. Merienne et al., "Walking kinematics in the polymorphic seed harvester ant Messor barbarus: influence of ant size and load carriage"
<p>DataSet from H. Merienne et al., “Walking kinematics in the polymorphic seed harvester ant Messor barbarus: influence of ant size and load carriage”</p>
Figures 1–4 in Preliminary contributions toward a revision of Greek Messor Forel, 1890 (Hymenoptera: Formicidae)
Figures 1–4. Messor carpathous (scale bar: 0.5 mm); 1-Dorsal view, 2-Lateral view, 3- Head, sculpture, 4-Head and antennae.
Figures 9–12 in Preliminary contributions toward a revision of Greek Messor Forel, 1890 (Hymenoptera: Formicidae)
Figures 9–12. Messor creticus (scale bar: 0.5 mm); 1-Dorsal view, 2-Lateral view, 3-Head, sculpture, 4-Head and antennae.
Figures 5–8 in Preliminary contributions toward a revision of Greek Messor Forel, 1890 (Hymenoptera: Formicidae)
Figures 5–8. Messor concolor (scale bar: 0.5 mm); 1-Dorsal view, 2-Lateral view, 3-Head, sculpture, 4-Head and antennae.
Fig. 1 in Soluble proteins in Messor structor (Latreille, 1798) (Hymenoptera: Formicidae) populations from Bulgaria - genetic variability and possible usage as population-genetic markers
Fig. 1. Sampling locations.
FIGURE 2 in Notes On Neoseiulus Paspalivorus (De Leon) And Proprioseiopsis Messor (Wainstein) (Acari: Phytoseiidae) Collected In Iran
FIGURE 2: Proprioseiopsis messor (Wainstein) (Female): A – Idiosoma, dorsal view; B – Idiosoma, ventral view; C – Spermathecae; D – Chelicera; E – Leg IV.
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