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33 results for “mound-building”
Fig. 28 in A taxonomic revision of the Palaearctic members of the Formica rufa group (Hymenoptera: Formicidae) - the famous mound-building red wood ants
Fig. 28: Classification by three variants of NC-clustering of 225 nest samples of workers of Formica lugubris (black bars) and 76 nest samples of Formica pratensis (grey bars). The mean error of three analyses is 0.2%. Ten phenotypic characters were considered. The small, well separated sub-branch in the F. lugubris cluster represents Fennoscandian nest samples containing exclusively Hippie morph workers.
Fig. 32 in A taxonomic revision of the Palaearctic members of the Formica rufa group (Hymenoptera: Formicidae) - the famous mound-building red wood ants
Fig. 32: Nest-sample means of the first and second principal component of workers of Formica paralugubris (black dots), Formica lugubris morph A1 (squares), F. lugubris morph A3 (triangles), and Formica helvetica sp.n. (rhombs). Eleven phenotypic characters were considered.
Data from: Widespread hybridization within mound-building wood ants in Southern Finland results in cytonuclear mismatches and potential for sex-specific hybrid breakdown
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Data from: A new mound-building biota from the lower Carboniferous of Alabama
<p>A small (1.2 m) columnar carbonate mound in shaley strata equivalent to the Hartselle Sandstone (lower Serpukhovian) near Woodville in northeastern Alabama was built by a consortium of species unlike those of other Carboniferous mounds in the southeastern United States. The mound contains a new problematic microencruster,<i> Aphralysia anfracta</i> n. sp., along with encrusting bryozoans (<i>Fistulipora </i>M'Coy, 1849<i>)</i>, nonskeletal microbes, and other microencrusters, including <i>Aphralysia capriorae</i> Mamet and Roux 1975, in a carbonate mud matrix. Mound cavities are filled with three generations of carbonate and siliciclastic sediment. Other biotic constituents of the mound include oncoids, sponges (including <i>Pileospongia</i> Rigby et al., 1979)<i>,</i> gastropods, crinoids, a tabulate coral, and coenobionts, including coccoid calcimicrobes. The mound biota, especially the microencrusters, is dramatically different from those of other Serpukhovian mounds that have been described from Alabama (made by various consortia of rugose corals, fenestrate bryozoa, crinoids, sponges, and nonskeletal microbes). Indeed, the Woodville mound extends the range of the lower Carboniferous encruster <i>Aphralysia</i> to North America.</p>
Data from: Excavation and aggregation as organizing factors in de novo construction by mound-building termites
Termites construct complex mounds that are orders of magnitude larger than any individual and fulfil a variety of functional roles. Yet the processes through which these mounds are built, and by which the insects organize their efforts, remain poorly understood. The traditional understanding focuses on stigmergy, a form of indirect communication in which actions that change the environment provide cues that influence future work. Termite construction has long been thought to be organized via a putative 'cement pheromone': a chemical added to deposited soil that stimulates further deposition in the same area, thus creating a positive feedback loop whereby coherent structures are built up. To investigate the detailed mechanisms and behaviours through which termites self-organize the early stages of mound construction, we tracked the motion and behaviour of major workers from two Macrotermes species in experimental arenas. Rather than a construction process focused on accumulation of depositions, as models based on cement pheromone would suggest, our results indicated that the primary organizing mechanisms were based on excavation. Digging activity was focused on a small number of excavation sites, which in turn provided templates for soil deposition. This behaviour was mediated by a mechanism of aggregation, with termites being more likely to join in the work at an excavation site as the number of termites presently working at that site increased. Statistical analyses showed that this aggregation mechanism was a response to active digging, distinct from and unrelated to putative chemical cues that stimulate deposition. Agent-based simulations quantitatively supported the interpretation that the early stage of de novo construction is primarily organized by excavation and aggregation activity rather than by stigmergic deposition.
Fig. 1 in A taxonomic revision of the Palaearctic members of the Formica rufa group (Hymenoptera: Formicidae) - the famous mound-building red wood ants
Fig. 1: Formica rufa, gyne; paramedian surface of the dorsum of first gaster tergite.
Data from: Excavation and aggregation as organizing factors in de novo construction by mound-building termites
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Data from: A new mound-building biota from the lower Carboniferous of Alabama
Open the record for dataset details and reuse information.
Figure 1 in A comparison of social behaviour in two rodent species: implications for the mating system of mound-building mice, Mus spicilegus
Figure 1. Median number of amicable, offensive, and defensive behaviours displayed by males (black and grey bars), and females (dotted and hatched bars) during male–female encounters. Sex-specific significant statistics, Mann-Whitney U test: * p,0.05.
Fig. 30 in A taxonomic revision of the Palaearctic members of the Formica rufa group (Hymenoptera: Formicidae) - the famous mound-building red wood ants
Fig. 30: Principal component analysis of 10 nest samples of Formica kupyanskayae (white rhombs) and of 76 nest samples of Formica pratensis (black dots). Ten phenotypic characters were considered.
Fig. 29 in A taxonomic revision of the Palaearctic members of the Formica rufa group (Hymenoptera: Formicidae) - the famous mound-building red wood ants
Fig. 29: Principal component analysis of polymorphism in 295 gynes of Formica pratensis. The P-morph with reduced setae (white dots) is clearly separated from the strongly haired N-morph (black rhombs). Eleven phenotypic characters were considered.
Fig. 24 in A taxonomic revision of the Palaearctic members of the Formica rufa group (Hymenoptera: Formicidae) - the famous mound-building red wood ants
Fig. 24: Position of the type samples of Formica major NY- LANDER, 1849 (MA) and Formica constricta KARAVAJEV, 1929 (CO) in a principal component analysis considering 58 nest samples of Formica polyctena (black squares) and 27 nest samples of Formica aquilonia × polyctena or backcrosses (white dots). The F. polyctena sample deeply placed within the hybrid cluster is aberrant and cannot be a hybrid for zoogeographical reasons. Seven phenotypic characters were considered.
Fig.22 in A taxonomic revision of the Palaearctic members of the Formica rufa group (Hymenoptera: Formicidae) - the famous mound-building red wood ants
Fig.22: Classification by the exploratory data analyses NC-Ward (dendrogram shown), NC-part.hclust and NC-part.kmeans and final species hypothesis formed by a controlling linear discriminant function (for details, see Material and Methods). Shown are 169 samples of workers of Formica rufa (red bars), Formica polyctena × rufa and backcrosses (green bars), and F. polyctena (black bars). White bars indicate outliers in NC- part.clust. The mean error of three analyses is 3.7% for K = 2 (presence of hybrids ignored) but 13.2% for K = 3 (presence of hybrids accepted), with 19% of the hybrid samples classified as either parental species. Accordingly, a hypothesis forma- tion based on NC-clustering alone, neglecting any accessory information, would suggest two sufficiently separable species. Twelve phenotypic characters were considered.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.