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115 results for “invasive predator”
Figure 2 in Predation on invasive land gastropods by a Neotropical land planarian
Figure 2. Obama ladislavii capturing Bradybaena similaris: (A) planarian encountering the snail; (B, C) planarian sliding over the snail's shell; (D) planarian placing the mouth close to the shell opening; (E, F) snail attempting to escape; (G) snail retracted into the shell; (H) planarian feeding on snail.
Figure 3 in Predation on invasive land gastropods by a Neotropical land planarian
Figure 3. Obama ladislavii feeding on Bradybaena similaris: (A) planarian attached to the snail's shell and snail exuding froth after retracting into the shell; (B) planarian's everted pharynx (arrow) penetrating the snail's body.
Data from: Behavioral changes in tadpoles after multigenerational exposure to an invasive intraguild predator
Prey subject to intraguild predation may face conflicting selective pressure on behavior, with competition favoring increased activity and predation favoring activity reduction. To discover how this evolutionary conflict might be resolved, we compared the behavior of tadpoles from four families drawn from different populations that had potentially co-evolved with an introduced intraguild predator for up to 90 years with the behavior of tadpoles from four families from unexposed populations. Intraguild prey were tadpoles of the declining California Red-legged Frog (Rana draytonii) and the intraguild predator was the invasive American Bullfrog (Lithobates catesbeianus), a voracious predator and strong competitor of other anurans. Limited evidence suggests that some native amphibians that have co-occurred with invasive predators for generations show adaptive behavioral responses to predator chemical cues. We tested whether R. draytonii larvae from families either allotopic or syntopic with bullfrogs would show responses to cues from overwintered bullfrog larvae. In the presence of cues, early-stage syntopic larvae decreased movement, consistent with an evolved innate defense, while allotopic larvae did not show behavioral changes. Later-stage syntopic larvae were generally more active than allotopic larvae, especially in the absence of cues, indicating a potential adaptive response to competition from bullfrog larvae. Increased activity appeared to be timed for when tadpoles became more resistant to predation. This is the first study to show changes in behavior across development consistent with complex selective pressure from an introduced intraguild predator. These findings have important implications for management of an endangered amphibian and a widely-introduced, invasive intraguild predator.
Carcasses attract invasive species and increase artificial nest predation in a desert environment
<p><span><span>In addition to feeding on animal remains, many scavengers also function as predators. Carcasses may therefore affect local animal communities by attracting facultative scavengers and increasing predation risk for other species in the vicinity of the carcasses. This risk may be elevated in low productivity environments, especially where humans increase carcass production and where facultative scavengers include </span>invasive species. In June and October 2018, we monitored experimentally placed red kangaroo (</span><em>Osphranter rufus</em>) carcasses and artificial bird nests in two different habitats in the Simpson Desert, Australia, to identify the nest predators attracted to the carcasses, and to determine how carcasses affect overall and predator-specific nest predation. We modelled our nests to approximate those of the ground nesting little buttonquail (<em>Turnix velox</em>) and the endangered night parrot (<em>Pezoporus occidentalis</em>). Native <em>Corvus</em> spp. and then invasive red foxes (<span><em>Vulpes vulpes</em></span>) were the top carcass visitors and nest egg predators. Carcass presence and open habitat increased overall nest predation and fewer artificial parrot nest eggs were depredated compared to those of quail. Open habitat and carcass presence only increased predator-specific nest predation by foxes, but corvid nest predation was highest in June 2018, and for the artificial quail nest types. Foxes were the main predator of eggs from night parrot nests. Our study shows that carcass provisioning by humans may have indirect, deleterious effects on ground nesting birds, and indicates that foxes might pose a greater threat to night parrot populations than previously recognised.</p>
Supplementary material 2 from: Muraro M, Romagnoli S, Barzaghi B, Falaschi M, Manenti R, Ficetola GF (2021) Invasive predators induce plastic and adaptive responses during embryo development in a threatened frog. NeoBiota 70: 69-86. https://doi.org/10.3897/neobiota.70.65454
Raw data
Fig. 1 in Analysis of propagule pressure and genetic diversity in the invasibility of a freshwater apex predator: the peacock bass (genus Cichla)
Fig. 1. River basins in eastern and northern Brazil showing sample sites and genetic parameters of native and introduced populations: Allelic richness (RA), Nei's genetic diversity (HE), Number of private alleles (NPA) and percentage of polymorphic loci. Samples sites: TRM - Três Marias reservoir and ML - Marginal Lake (both in the São Francisco River); ITU - Itumbiara reservoir (Paraná River - upper Paraná River basin); RD - Rio Doce (Dom Helvécio Lake - Doce basin); FU - Furnas reservoir (Grande River - upper Paraná River basin); TO - Tucuruí reservoir (Tocantins River - Amazon basin).
Supplementary material 1 from: Moyano J, Chiuffo MC, Policelli N, Nuñez MA, Rodriguez-Cabal MA (2019) The interplay between propagule pressure, seed predation and ectomycorrhizal fungi in plant invasion. NeoBiota 42: 45-58. https://doi.org/10.3897/neobiota.42.30978
: Data type: multimedia
Datasets and R source code of manuscript "Adding insult to injury: anthropogenic noise intensifies predation risk by an invasive freshwater fish species" by Fernandez Declerck et al.
<p>Datasets and R source code of manuscript "Adding insult to injury: anthropogenic noise intensifies predation risk by an invasive freshwater fish species" by Fernandez Declerck et al. (submitted)</p> <p> Project<br> ├── README<br> ├── data_functional_response.txt<br> ├── data_prey_behaviour.txt<br> ├── R_script.R<br> └── BINV-D-22-00447_Playback.wav</p> <p>Main dataset: 'data_functional_response.txt'. Dataset for the functional response of the predator. Fish behaviour was recorded under two noise conditions (either boat noise or ambient noise). The dataset corresponds to data frame "d" in the script. Variables description:<br> - id: identity of the fish<br> - condition: noise condition, either "boat noise" or "ambient noise"<br> - prey_number: number of chironomid larvae introduced in the tank<br> - prey_captured : number of chironomid larvae consumed<br> - fish_mass : fish body mass (g)<br> - swim_distance: swim distance (m)</p> <p>Secondary dataset: 'data_prey_behaviour.txt'. Dataset for control experiment on prey behaviour. Prey behaviour was recorded under two noise conditions (either boat noise or ambient noise). The dataset corresponds to data frame "f" in the script. We used 20 replicates with 10 replicates for ambient noise condition, and 10 replicates for boat noise condition. Two focal prey larva were observed per replicates. Each prey larva was observed during two time periods (corresponding to two noise sequences). Variables description:<br> - condition: noise condition, either "boat noise" or "ambient noise"<br> - replicate: number of the replicate<br> - unique_id: identity of each focal larva<br> - noise_sequence: number of the noise sequence (either second or third)<br> - prop_inactive: proportion of time spent inactive by the focal larva<br> - prop_active: proportion of time spent active by the focal larva</p> <p>R source code 'code R_script.R'. Complete analysis as one single R script. See comments for additional information.</p> <p>The last file `BINV-D-22-00447_Playback.wav` is an audio file (Waveform Audio File Format). It is the soundtrack used in the playback experiments.</p>
Data from: Behavioral changes in tadpoles after multigenerational exposure to an invasive intraguild predator
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Carcasses attract invasive species and increase artificial nest predation in a desert environment
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Fig. 2. First P in First Records Of New Aquatic Predator Pelodiscus Sinensis (Wiegmann 1835) In Latvia And Preliminary Ecological Risk Assessment Of The Invasion For Autochthonic Emys Orbicularis (Linnaeus 1758)
Fig. 2. First P.sinensis #PeSi0001 found in Latvia: head, legs and tail of the male are visible.
Data from: Differential population responses of native and alien rodents to an invasive predator, habitat alteration, and plant masting
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FIGURE 2 in A host, a parasite, and a predator: the dynamics of successive invasions in the eastern Mediterranean
FIGURE 2. Carapace width of Charybdis longicollis collected off Ashdod at 60 m depth. Legend: stripes—unparasitized crabs; black dots—internally parasitized crabs; white dots—externa-bearing crabs; males on the left, females on the right.
Managing island-invasive ants: invertebrate predation, targeted suppression and subsequent endemic insect recovery
<p>These two datasets accompany the manuscript of the same title.</p>
Data set: Temporality matters: Daytime boating alters predation activity of the invasive nocturnal killer shrimp
<p>Here, the script and data for compiling functional response of D.villosus in 2 conditions of noise pollution</p>
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.