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77 results for “invasive ants”
Microsatellite alleles of two species of Tetramorium ants in their native and invasive ranges
<p>Microsatellite alleles at 16 loci, for 80 individuals of <em>Tetramorium immigrans</em> and 84 individuals of <em>T. tsushimae</em> from both their native and invasive ranges.</p>
Data and R scripts for: Ant invasions is associated with lower root density and different root distribution of a foundational savanna tree species
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Dominance of a highly invasive ant is limited to the nesting territory of its supercolony
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Data from: Genetic analysis reveals the putative native range and widespread double‐clonal reproduction in the invasive longhorn crazy ant
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Data from: Worker survival and egg production– but not transcriptional activity– respond to queen number in the highly polygynous, invasive ant Tapinoma magnum
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Data from: Black garden ants reduce aphid predation by native and invasive ladybirds
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Tree species richness suppresses red imported fire ant invasion in a subtropical plantation forest
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Microsatellite alleles of two species of Tetramorium ants in their native and invasive ranges
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Data from: Variable viral loads and immune response in tan invasive ant’s native and introduced ranges
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Trait-mediated competition drives an ant invasion and alters functional diversity
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Data from: Social immunity in a supercolonial invasive ant: Nest structure confers immune function
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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: Chemical warfare among invaders: a detoxification interaction facilitates an ant invasion
As tawny crazy ants (Nylanderia fulva) invade the southern USA, they often displace imported fire ants (Solenopsis invicta). Following exposure to S. invicta venom, N. fulva applies abdominal exocrine gland secretions to its cuticle. Bioassays reveal that these secretions detoxify S. invicta venom. Further, formic acid, from N. fulva venom, is the detoxifying agent. N. fulva exhibits this detoxification behavior after conflict with a variety of ant species; however, it expresses it most intensely after interactions with S. invicta. This behavior may have evolved in their shared South American native range. The unique capacity to detoxify a major competitor's venom likely contributes substantially to its ability to displace S. invicta populations, making this behavior a causative agent in the ecological transformation of regional arthropod assemblages.
Data from: Propagule pressure and colony social organization are associated with the successful invasion and rapid range expansion of fire ants in China
We characterized patterns of genetic variation in populations of the fire ant Solenopsis invicta in China using mitochondrial DNA sequences and nuclear microsatellite loci to test predictions as to how propagule pressure and subsequent dispersal following establishment jointly shape the invasion success of this ant in this recently invaded area. Fire ants in Wuchuan (Guangdong province) are genetically differentiated from those found in other large infested areas of China. The immediate source of ants in Wuchuan appears to be somewhere near Texas, which ranks first among states in the southern USA infested states in the exportation of goods to China. Most colonies from spatially distant, outlying areas in China are genetically similar to one another and appear to share a common source (Wuchuan, Guangdong province), suggesting that long-distance jump dispersal has been a prevalent means of recent spread of fire ants in China. Furthermore, most colonies at outlier sites are of the polygyne social form (featuring multiple egg-laying queens per nest), reinforcing the important role of this social form in the successful invasion of new areas and subsequent range expansion following invasion. Several analyses consistently revealed characteristic signatures of genetic bottlenecks for S. invicta populations in China. The results of this study highlight the invasive potential of this pest ant, suggest that the magnitude of international trade may serve as a predictor of propagule pressure and indicate that rates and patterns of subsequent range expansion are partly determined by the interplay between species traits and the trade and transportation networks.
Data from: Decreased small mammal and on-host tick abundance in association with invasive red imported fire ants (Solenopsis invicta)
Invasive species may impact pathogen transmission by altering the distributions and interactions among native vertebrate reservoir hosts and arthropod vectors. Here, we examined the direct and indirect effects of the red imported fire ant (Solenopsis invicta) on the native tick, small mammal and pathogen community in southeast Texas. Using a replicated large-scale field manipulation study, we show that small mammals were more abundant on treatment plots where S. invicta populations were experimentally reduced. Our analysis of ticks on small mammal hosts demonstrated a threefold increase in the ticks caught per unit effort on treatment relative to control plots, and elevated tick loads (a 27-fold increase) on one common rodent species. We detected only one known human pathogen (Rickettsia parkeri), present in 1.4% of larvae and 6.7% of nymph on-host Amblyomma maculatum samples but with no significant difference between treatment and control plots. Given that host and vector population dynamics are key drivers of pathogen transmission, the reduced small mammal and tick abundance associated with S. invicta may alter pathogen transmission dynamics over broader spatial scales.
Data from: Testing the effects of ant invasions on non-ant arthropods with high-resolution taxonomic data
Invasions give rise to a wide range of ecological effects. Many invasions proceed without noticeable impacts on the resident biota, whereas others shift species composition and even alter ecosystem function. Ant invasions generate a broad spectrum of ecological effects, but controversy surrounds the extent of these impacts, especially with regard to how other arthropods are affected. This uncertainty in part results from the widespread use of low-resolution taxonomic data, which can mask the presence of other introduced species and make it difficult to isolate the effects of ant invasions on native species. Here, we use high-resolution taxonomic data to examine the effects of Argentine ant invasions on arthropods on Santa Cruz Island, California. We sampled arthropods in eight pairs of invaded and uninvaded plots and then collaborated with taxonomic experts to identify taxa in four focal groups: spiders, bark lice, beetles, and ants. Spiders, bark lice, and beetles made up ~40% of the 9868 non-ant arthropod individuals sampled; the majority of focal group arthropods were putatively native taxa. Although our results indicate strong negative effects of the Argentine ant on native ants, as is well documented, invaded and uninvaded plots did not differ with respect to the richness, abundance, or species composition of spiders, bark lice, and beetles. One common, introduced species of bark louse was more common in uninvaded plots than in invaded plots, and including this species into our analyses changed the relationship between bark louse richness vs. L. humile abundance from no relationship to a significant negative relationship. This case illustrates how failure to differentiate native and introduced taxa can lead to erroneous conclusions about the effects of ant invasions. Our results caution against unqualified assertions about the effects of ant invasions on non-ant arthropods, and more generally demonstrate that accurate assessments of invasion impacts depend on adequate information about species identity.
Fig.8 in Intriguing additions of exotic and invasive ants to The Gambia (Hymenoptera: Formicidae)
Fig.8. Trichomyrmex destructor (Jerdon, 1851) (CASENT0125190), Reunion Island. Worker. A, Head frontal view. B, Habitus lateral view. © Antweb.
Fig.9 in Intriguing additions of exotic and invasive ants to The Gambia (Hymenoptera: Formicidae)
Fig.9. Wasmannia auropunctata (Roger, 1863) (CASENT0178173), Paraguay. A, Head frontal view. B, Habitus lateral view. © Antweb.
Fig.7 in Intriguing additions of exotic and invasive ants to The Gambia (Hymenoptera: Formicidae)
Fig.7. Tapinoma melanocephalum (Fabricius, 1793) (CASENT0008659), Madagascar. Worker. A, Head frontal view. B, Habitus lateral view. © Antweb.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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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.