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20 results for “Linepithema”
Figura 1 in Uso de Linepithema humile Mayr, 1868 (Hymenoptera: Formicidae) como agente biológico para la limpieza de osamenta de Philodryas chamissonis (Wiegmann, 1834) (Squamata: Colubridae)
Figura 1. Proceso de limpieza de esqueleto de culebra de cola larga. a.) Ejemplar recolectado. b) Dispositivo con el ejemplar y el cebo de azúcar. c) y d) Esqueleto limpio. / Long-tailed snake skeleton cleaning process. a.) Collected specimen. b) Device with the specimen and sugar bait. c) and d) Clean skeleton.
Data from: Underlying mechanisms and ecological context of variation in exploratory behavior of the Argentine ant, Linepithema humile
Uncovering how and why animals explore their environment is fundamental for understanding population dynamics, the spread of invasive species, species interactions, etc. In social animals, individuals within a group can vary in their exploratory behavior, and the behavioral composition of the group can determine its collective success. Workers of the invasive Argentine ant (Linepithema humile) exhibit individual variation in exploratory behavior, which affects the colony's collective nest selection behavior. Here, we examine the mechanisms underlying this behavioral variation in exploratory behavior and determine its implications for the ecology of this species. We first establish that individual variation in exploratory behavior is repeatable and consistent across situations. We then show a relationship between exploratory behavior and the expression of genes that have been previously linked with other behaviors in social insects. Specifically, we found a negative relationship between exploratory behavior and the expression of the foraging (Lhfor) gene. Finally, we determine how colonies allocate exploratory individuals in natural conditions. We found that ants from inside the nest are the least exploratory individuals, whereas workers on newly formed foraging trails are the most exploratory individuals. Furthermore, we found temporal differences throughout the year: in early-mid spring, when new resources emerge, workers are more exploratory than at the end of winter, potentially allowing the colony to find and exploit new resources. These findings reveal the importance of individual variation in behavior for the ecology of social animals.
Data from: Underlying mechanisms and ecological context of variation in exploratory behavior of the Argentine ant, Linepithema humile
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The effect of diet on colony recognition and cuticular hydrocarbon profiles of the invasive Argentine ant, Linepithema humile
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The role of body size and cuticular hydrocarbons in the desiccation resistance of invasive Argentine ants (Linepithema humile)
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Data from: Argentine ants (Linepithema humile) use adaptable transportation networks to track changes in resource quality
Transportation networks play a crucial role in human and animal societies. For a transportation network to be efficient, it must have adequate capacity to meet traffic demand. Network design becomes increasingly difficult in situations where traffic demand can change unexpectedly. In humans, network design is often constrained by path dependency because it is difficult to move a road once it is built. A similar issue theoretically faces pheromone-trail-laying social insects; once a trail has been laid, positive feedback makes re-routing difficult because new trails cannot compete with continually reinforced pre-existing trails. In the present study, we examined the response of Argentine ant colonies and their trail networks to variable environments where resources differ in quality and change unexpectedly. We found that Argentine ant colonies effectively tracked changes in food quality such that colonies allocated the highest proportion of foragers to the most rewarding feeder. Ant colonies maximised access to high concentration feeders by building additional trails and routes connecting the nest to the feeder. Trail networks appeared to form via a pruning process in which lower traffic trails were gradually removed from the network. At the same time, we observed several instances where new trails appear to have been built to accommodate a surge in demand. The combination of trail building when traffic demand is high and trail pruning when traffic demand is low results in a demand-driven network formation system that allows ants to monopolise multiple dynamic resources.
FIGURE 2. Linepithema dispertitum workers. A–B in The ant genus Linepithema (Formicidae: Dolichoderinae) in Colombia
FIGURE 2. Linepithema dispertitum workers. A–B: Colombia, Cesar, CBUMAG-06576. C–D: Colombia, Guajira, CBUMAG-06577. E–F: Colombia, Cesar, CBUMAG-06575.
FIGURE 4. Linepithema gallardoi, L. neotropicum and L in The ant genus Linepithema (Formicidae: Dolichoderinae) in Colombia
FIGURE 4. Linepithema gallardoi, L. neotropicum and L. iniquum distribution in Colombia from examined material.
Data from: Argentine ants (Linepithema humile) use adaptable transportation networks to track changes in resource quality
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FIGURE 1 in The ant genus Linepithema (Formicidae: Dolichoderinae) in Colombia
FIGURE 1. Linepithema hirsutum worker paratype (CBUMAG 06968).
FIGURE 3 in The ant genus Linepithema (Formicidae: Dolichoderinae) in Colombia
FIGURE 3. Linepithema fuscum-group distribution in Colombia from examined material.
Statistical analysis and dataset for: Linepithema humile shows a lower drinking acceptance for two psychoactive chemicals when using a novel dual-feeder method
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Figure 3 from: López-Collar D, Cabrero-Sañudo FJ (2021) Update on the invasion status of the Argentine ant, Linepithema humile (Mayr, 1868), in Madrid, a large city in the interior of the Iberian Peninsula. Journal of Hymenoptera Research 85: 161-177. https://doi.org/10.3897/jhr.85.65725
Figure 3 Colony extension and foraging areas of the Argentine ant in nine locations of Madrid. A Enrique Tierno Galván Park B del Norte-Carmen Tagle Park C Real Jardín Botánico de Madrid and Alfonso XII Street D Príncipe de Vergara Street E Sorolla Museum Gardens F Nueva España Neighbourhood G Casa de Campo Park (east side) and Madrid Río Park.
Figure 2 from: López-Collar D, Cabrero-Sañudo FJ (2021) Update on the invasion status of the Argentine ant, Linepithema humile (Mayr, 1868), in Madrid, a large city in the interior of the Iberian Peninsula. Journal of Hymenoptera Research 85: 161-177. https://doi.org/10.3897/jhr.85.65725
Figure 2 Locations of the Argentine ant in the city of Madrid. The letters in red circles correspond to locations where the Argentine ant has been recorded during the 2018–2020 surveys (areas in red). Letters in blue circles indicate bibliographic and personal communication records. The green areas correspond to parks and gardens that have been thoroughly sampled and where Linepithema humile has not been found, except for the eastern corner of the Casa de Campo Park (E). The light grey areas are green areas (parks and gardens) that have not been sampled and are capable of harbouring colonies of the Argentine ant.
Figure 1 from: López-Collar D, Cabrero-Sañudo FJ (2021) Update on the invasion status of the Argentine ant, Linepithema humile (Mayr, 1868), in Madrid, a large city in the interior of the Iberian Peninsula. Journal of Hymenoptera Research 85: 161-177. https://doi.org/10.3897/jhr.85.65725
Figure 1 Municipalities (in red) where the Argentine ant has been recorded in the Community of Madrid.
Figure 4 from: López-Collar D, Cabrero-Sañudo FJ (2021) Update on the invasion status of the Argentine ant, Linepithema humile (Mayr, 1868), in Madrid, a large city in the interior of the Iberian Peninsula. Journal of Hymenoptera Research 85: 161-177. https://doi.org/10.3897/jhr.85.65725
Figure 4 Argentine ant workers photographed in the city of Madrid. Both photographs belong to the citizen science platform 'Biodiversidad Virtual'. A Real Jardín Botánico of Madrid, by José Fernández (Biodiversidad Virtual 2016). B Puerto Rico Street, Nueva España Neighbourhood, by Álvaro Izuzquiza (Biodiversidad Virtual 2011).
Supplementary material 2 from: Sanmartín-Villar I, Cruz da Silva E, Chiara V, Cordero-Rivera A, Lorenzo-Carballa MO (2022) Genetic divergence and aggressiveness within a supercolony of the invasive ant Linepithema humile. NeoBiota 77: 125-153. https://doi.org/10.3897/neobiota.77.90852
Behavioural data
Supplementary material 1 from: Sanmartín-Villar I, Cruz da Silva E, Chiara V, Cordero-Rivera A, Lorenzo-Carballa MO (2022) Genetic divergence and aggressiveness within a supercolony of the invasive ant Linepithema humile. NeoBiota 77: 125-153. https://doi.org/10.3897/neobiota.77.90852
Figures S1–S4, Tables S1, S2
Data from: Genetic compatibility affects division of labor in the Argentine ant Linepithema humile
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Individual trial data on path choice in response to risk in Linepithema humile
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