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37 results for “carpenter ants”
Linked collectors and determiners for: First record in Canada for the bicolored arboreal carpenter ant Camponotus discolor Buckley (Hymenoptera: Formicidae).
Natural history specimen data linked to collectors and determiners held within, "First record in Canada for the bicolored arboreal carpenter ant Camponotus discolor Buckley (Hymenoptera: Formicidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/44c69331-0fc4-46b0-9da5-8b5d5d933989">https://bionomia.net/dataset/44c69331-0fc4-46b0-9da5-8b5d5d933989</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/44c69331-0fc4-46b0-9da5-8b5d5d933989">https://gbif.org/dataset/44c69331-0fc4-46b0-9da5-8b5d5d933989</a>. Formatted as a Frictionless Data package.
Impact of host demography and evolutionary history on endosymbiont molecular evolution: a test in carpenter ants (Genus Camponotus) and their Blochmannia endosymbionts
Obligate endosymbioses are tight associations between symbionts and the hosts they live inside. Hosts and their associated obligate endosymbionts generally exhibit codiversification, which has been documented in taxonomically diverse insect lineages. Host demography (e.g., effective population sizes) may impact the demography of endosymbionts, which may lead to an association between host demography and the patterns and processes of endosymbiont molecular evolution. Here, we used whole-genome sequencing data for carpenter ants (Genus Camponotus; subgenera Camponotus and Tanaemyrmex) and their Blochmannia endosymbionts as our study system to address whether Camponotus demography shapes Blochmannia molecular evolution. Using whole-genome phylogenomics, we confirmed previous work identifying codiversification between carpenter ants and their Blochmannia endosymbionts. We found that Blochmannia genes have evolved at a pace ~30× faster than that of their hosts' molecular evolution and that these rates are positively associated with host rates of molecular evolution. Using multiple tests for selection in Blochmannia genes, we found signatures of positive selection and shifts in selection strength across the phylogeny. Host demography was associated with Blochmannia shifts toward increased selection strengths, but not associated with Blochmannia selection relaxation, positive selection, genetic drift rates, or genome size evolution. Mixed support for relationships between host effective population sizes and Blochmannia molecular evolution suggests weak or uncoupled relationships between host demography and Blochmannia population genomic processes. Finally, we found that Blochmannia genome size evolution was associated with genome-wide estimates of genetic drift and number of genes with relaxed selection pressures. --
Natural history and ecological effects on the establishment and fate of Florida carpenter ant cadavers infected by the parasitic-manipulator Ophiocordyceps camponoti-floridani
<p class="MsoNormal">1. <em>Ophiocordyceps</em> fungi manipulate the behavior of their ant hosts to produce a summit disease phenotype, thereby establishing infected ant cadavers onto vegetation at elevated positions suitable for fungal growth and transmission. Multiple environmental and ecological factors have been proposed to shape the timing, positioning, and outcome of these manipulations.</p> <p class="MsoNormal">2. We conducted a long-term field study of <em>Ophiocordyceps</em> <em>camponoti-floridani</em> infections of <em>Camponotus floridanus</em> ants – the Florida zombie ants. We propose and refine hypotheses on the factors that shape infection outcomes by tracking the occurrence of fungal growth from hundreds of ant cadavers. We modeled and report these data in relation to weather, light, vegetation, and attack by mycoparasites.</p> <p class="MsoNormal">3. We investigated environmental factors that could affect the occurrence and location of newly manipulated ant cadavers. New cadavers were positively correlated with epiphytic <em>Tillandsia </em>bromeliads, canopy openness, and weather conditions (an interactive effect of temperature, humidity, and precipitation) with an increased occurrence during the sub-tropical summer. We further suggest that incident light at the individual cadaver level may reflect microhabitat choice by manipulated ants or selective pressure on cadaver maintenance for conditions improving fungal survival.</p> <p class="MsoNormal">4. We also sought to connect fungal fitness to environmental conditions. Continued fungal development of reproductive structures and putative transmission increased with moist weather conditions (interaction of humidity and precipitation) and canopy openness, while being reduced by attack by mycoparasites. Moreover, under the most open canopy conditions, we found an atypical <em>Ophiocordyceps</em> growth morphology that could represent a plastic response to conditions influenced by high light levels.</p> <p class="MsoNormal">5. Taken together, we explore general trends and the effects of various ecological conditions on host and parasite disease outcomes in the Florida zombie ant system. These insights from the field can be used to inform experimental laboratory setups that directly test the effects of biotic and abiotic factors on fungus-ant interactions or aim to uncover underlying molecular mechanisms.</p>
Natural history and ecological effects on the establishment and fate of Florida carpenter ant cadavers infected by the parasitic-manipulator Ophiocordyceps camponoti-floridani
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Data from: Innate visual attraction before, during and after escape from adverse substrates in carpenter ants
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Impact of host demography and evolutionary history on endosymbiont molecular evolution: a test in carpenter ants (Genus Camponotus) and their Blochmannia endosymbionts
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Data from: Better safe than sorry: Leg amputations as a prophylactic wound care behaviour in carpenter ants
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Foraging and spatial ecology of a polydomous carpenter ant (Camponotus leydigi) in tropical cerrado savanna: A natural history account
<p>Carpenter ants (genus <i>Camponotus</i>) are considered to be predominantly omnivorous, mixing several feeding habits that include predation, scavenging of animal matter, and plant-derived resources. Nitrogen acquisition is crucial for the nutritional ecology of ant colonies since growing larvae require sustainable protein provisioning. Here, we investigate the foraging ecology and the spatial nesting structure of the carpenter ant <i>Camponotus leydigi</i> in Brazilian cerrado savanna. By marking workers from different nests with distinct colors, we revealed that <i>C. leydigi</i> occupies physically separated but socially connected nests (up to 30 m apart), a phenomenon known as polydomy. Observational data on aboveground internest movements in <i>C. leydigi</i> corroborate cooperative exchanges between nest units and confirm several types of social connections, including internest transfer of liquid and solid food, transport of colony members (brood, workers), movement of solitary workers, and internest recruitment. Polydomous <i>C. leydigi</i> allocate foragers throughout 1,700 m<sup>2</sup>, feeding mostly on termites and plant-derived exudates. Influx of exudates is threefold higher compared to solid food. Uric acid pellets excreted by lizards comprise 20% of the solid diet in <i>C. leydigi</i>, a rare quantitative assessment of this peculiar type of nitrogen complementation in ants. Based on video recordings, we hypothesize that nest decentralization in <i>C. leydigi</i> may reduce foraging constraints caused by overt interference by the aggressive ant <i>Ectatomma brunneum</i>, which regularly blocks nest entrances. Our field study enhances the importance of natural history data to clarify selective pressures underlying the evolution of particular behavioral patterns (nutritional and nesting habits) in ants.</p>
Supplementary material 1 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Ratios of morphometric data for all specimens :
Figure 6 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 6 - Petiole in lateral view of A Camponotus longicollis (CASENT0191989), and B Camponotus karaha (CASENT0067555).
Figure 10 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 10 - Camponotus imitator major worker CASENT0452863. A Lateral view B Head in full-face view C Dorsal view.
Figure 5 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 5 - Head of major worker in full-face view. A Camponotus imitator (CASENT0452863), head wedge-shaped B Camponotus karaha (CASENT0151921), head rectangular.
Figure 15 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 15 - A Variant 1, a typical C. karaha. CASENT0067555 B Variant 2 from the north. CASENT0353274.
Figure 14 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 14 - Camponotus karaha major worker CASENT0151921. A Lateral view B Head in full-face view C Dorsal view.
Figure 1 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 1 - Camponotus species in thesubgenus Myrmopytia are thought to mimic co-occurring Aphaenogaster species A Aphaenogaster swammerdami (CASENT0017663) B Camponotus imitator (CASENT0452849).
Figure 8 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 8 - Lateral view of propodeum and petiole in minor workers of A Camponotus karaha (CASENT0067555), and B Camponotus jodina (CASENT0152090).
Figure 17 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 17 - Camponotus longicollis major worker CASENT0763008. A Lateral view B Head in full-face view C Dorsal view.
Figure 18 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 18 - Distribution maps of the three new species. A Camponotus jodina B Camponotus karaha C Camponotus longicollis.
Figure 7 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 7 - Head in lateral view showing the dorsal margin of the clypeus (similar in minor and major workers). A Camponotus longicollis (CASENT0191989) B Camponotus karaha (CASENT0353274).
Figure 4 from: Rasoamanana N, Csosz S, Fisher BL (2017) Taxonomic revision of imitating carpenter ants, Camponotus subgenus Myrmopytia (Hymenoptera, Formicidae) of Madagascar, using morphometry and qualitative traits. ZooKeys 681: 119-152. https://doi.org/10.3897/zookeys.681.13187
Figure 4 - Illustration of the neck (posterior region of the head) and the anterior clypeal margin of A Camponotus imitator (CASENT0452849), and B Camponotus karaha (CASENT0152090). Arrows indicate the posterior portion of the head capsule which in karaha is drawn out into a strongly constricted neck, behind which the head capsule flares out, forming a pronounced collar.
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