Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
115
datasets available to search
ShareScore release 0.9.0
Dataset results
115 results for “invasive predator”
Fig. 10 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. 10. Peculiarities of P.sinensis findings waterbodies size in Latvia.
Dances with wolves: the demographic consequence of asymmetric competition and intraguild predation in a native-invasive skink system
<p><span>1. Currently, we lack enough knowledge to fully explain how the impacts of species invasion on native communities are attributed to multifaceted, individual-based behavioral outcomes.</span></p> <p><span>2. Here, we illustrate the long-term population dynamics of the native long-tailed sun skink (Eutropis longicaudata) before and after the invasion of the common sun skink (Eutropis multifasciata). We conducted diet investigation, morphological measurement, and a series of behavioral experiments both in the field and laboratory. We explained how the impacts of the invasive skink on the native skink can cascade towards the population level based on these individual-level behavioral data.</span></p> <p><span>3. We present evidence of competition exclusion of the native skink population resulting from the invasion of the common sun skink. The drastic decline found in the native skink population was largely accounted for by low recruitment, as shown by the decrease in its clutch numbers correspondingly.</span></p> <p><span>4. We also found dominance of the invasive skink in both exploitation competition and intraguild predation. Considering the highly overlapping morphological and dietary niches between the two species, our findings imply that the native skink has undergone strong food competition and predation pressure on its eggs and juveniles.</span></p> <p><span>5. Interestingly, the native skink started to display parental care behavior two years after the invasion event, and its clutch survival rate has recovered since then. The shift in parental care behavior may help the native skink cope with this new predation pressure from the invasive skink.</span></p> <p>6. Overall, the two competitive skinks showed low chances of coexisting. The negative population growth of this native skink species may be primarily derived from poor reproductive performance, given a sharp decline in its clutch numbers and its inferiority in exploitation competition, despite rebounding clutch survival rates.</p>
Data from: Mesopredator release among invasive predators: controlling red foxes can increase feral cat density and alter their behaviour
<p>The mesopredator release theory predicts that the density of subordinate predators will increase as dominant predators decline. Persistent debate around mesopredator release in part reflects the lack of robust, replicated experiments to test this theory, and the use of population indices which confound changes in mesopredator density and detectability. This uncertainty has immediate impacts for conservationists who are faced with managing sympatric invasive predators.</p> <p>We used replicated experimental designs and spatially-explicit models to examine whether mesopredator release of the feral cat <em>Felis catus</em> occurs in response to targeted control of the introduced red fox <em>Vulpes vulpes</em>. We surveyed three Control-Impact paired landscapes in a region with long-term fox control (1080 poison baiting), and conducted a Before-After Control-Impact Paired-Series experiment in another region. We used fox occurrence as a simple metric of fox populations and estimated feral cat density with spatial mark-resight models.</p> <p>Lethal fox control had varying effects on fox occurrence, consistent with variation in the duration and intensity of poison baiting. Correspondingly, responses in feral cat density ranged from negligible to a 3.7-fold higher density in fox-baited landscapes. At a fine spatial scale (200 m<sup>2</sup>), feral cat density was negatively associated with fox occurrence probability across both regions. These results were consistent with mesopredator release, although uncertainty was high in the region where fox control had only recently commenced.</p> <p>Feral cat detectability also varied across the (artificially-manipulated) gradients of fox occurrence probability. In one region, nonlinear models indicated that feral cats had lower detection and increased movement rates when foxes were uncommon, giving way to density suppression at high fox occurrence probabilities.</p> <p><em>Synthesis and applications.</em> Our study provides replicated, experimental evidence that dominant predator suppression can be associated with a higher mesopredator density. Mesopredator release can manifest as changes in both behaviour and density, distorting inference if these processes are not distinguished. Our results may help explain why fox control does not consistently improve native prey persistence, suggesting integrated pest management may be necessary to improve conservation outcomes.</p>
A major myna problem; invasive predator removal benefits female survival and population growth of a translocated island endemic
<p>Invasive predators are a major driver of extinctions and continue to threaten native populations worldwide. Island eradications of (mostly mammalian) invasive predators have facilitated the reestablishment of numerous island-endemic populations. Other invasive taxa, such as some predatory birds, could pose a more persistent threat due to their ability to fly and actively re-invade even remote and isolated islands. However, the impact of invasive predatory birds has been largely overlooked. We report on a novel sex-specific impact of an invasive-nest predator, the common myna (<span><em>Acridotheres</em> <em>tristis</em></span>), on a reintroduced population of Seychelles warblers (<span><em>Acrocephalus</em> <em>sechellensis</em></span>); translocated from Cousin Island to Denis Island in 2004. Regular post-translocation monitoring revealed that female mortality was 20 % higher than males, leading to a 60<span>–</span>70 % male-biased population sex-ratio between 2005 and 2015. This was attributed to common mynas inflicting severe injuries to incubating female Seychelles warblers while attempting to prey upon eggs in their nests. These effects likely contributed to the slower-than-expected population growth observed (relative to previous translocations of Seychelles warblers to other islands) over the same period. An eradication programme beginning in 2011 removed all common mynas from Denis by 2015. Subsequently, we observed a balancing of sex-specific survival and the population sex-ratio of Seychelles warblers and, consequently, accelerated population growth. This study demonstrates the importance of assessing the threat posed by all invasive taxa (not just mammals) to island conservation. Furthermore, we show how extended monitoring is needed to identify problems and develop solutions, post-translocation.</p>
Data from: Evaluating predator control using two non-invasive population metrics: a camera trap activity index and density estimation from scat genotyping
<p>Includes datasets from the Wimmera and Mallee, Victoria, Australia:</p> <p>- Fox camera trap data used to model activity</p> <p>- Fox scat SECR capture and trap files used to model density</p>
Data from: Mesopredator release among invasive predators: controlling red foxes can increase feral cat density and alter their behaviour
Open the record for dataset details and reuse information.
Data from: Applying invasion biology frameworks to predict impacts of range-expanding predators
Open the record for dataset details and reuse information.
Data from: Divergent responses of native predators to severe wildfire and biological invasion are mediated by life history
Open the record for dataset details and reuse information.
A major myna problem; invasive predator removal benefits female survival and population growth of a translocated island endemic
Open the record for dataset details and reuse information.
Evolution in changing seas: The loss of plasticity under predator invasion and warming oceans
Open the record for dataset details and reuse information.
Dances with wolves: the demographic consequence of asymmetric competition and intraguild predation in a native-invasive skink system
Open the record for dataset details and reuse information.
Data from: Black garden ants reduce aphid predation by native and invasive ladybirds
Open the record for dataset details and reuse information.
Data from: What’s on the menu? Examining native apex- and invasive meso-predator diets to understand impacts on ecosystems
Open the record for dataset details and reuse information.
Data from: Fox control and fire influence the occurrence of invasive predators and threatened native prey
Open the record for dataset details and reuse information.
Effects of an invasive top predator on Ecosystem structure and function in a Graminoid Marsh food web
Open the record for dataset details and reuse information.
Differential learning by native versus invasive predators to avoid distasteful cleaning mutualists
Open the record for dataset details and reuse information.
The invasive pathogenic fungus of ash trees alters arthropod predator – prey food webs in forest plantations
<p>The data set contains data on:</p> <p>1] Prey type and size (sheet1: prey type and size). In the cells, prey length in mm is provided for each prey item. NA is stated for a prey item that could not be measured. In this sheet, the plot ids and the spider ids are also stated, which enables connection with other sheets. Note: more prey items caught by an individual are stated in one row if they are of different type. Prey items of a same type caught by an individual are itemized in more rows.</p> <p>2] Information about spider individuals (sheet2: spiders). For each spider individual, it is provided its id, so it can be connected with sheet 1, plot id where it was collected, when it was collected (month), web type, and prosoma length (mm). </p> <p>3] Characteristics of sampling plots (sheet3: environmental data). It is provided plot id, age, infestation degree by H<em>ymenoscyphus fraxineus</em>, canopy openness, shrub coverage, and herb coverage.</p> <p>4] Potential prey of spiders (sheet 4: potential prey). Standardized no. of prey per trap (20 x 15 cm, both sides were sticky) in each plot.</p>
Size, not temperature, drives cyclopoid copepod predation of invasive mosquito larvae
<p class="CxSpFirst">During range expansion, invasive species can experience new thermal regimes. Differences between the thermal performance of local and invasive species can alter species interactions, including predator-prey interactions. The Asian tiger mosquito, <i>Aedes albopictus</i>, is a known vector of several viral diseases of public health importance. It has successfully invaded many regions across the globe and currently threatens to invade regions of the UK where conditions would support seasonal activity. We assessed the functional response and predation efficiency (percentage of prey consumed) of the cyclopoid copepods <em>Macrocyclops albidus</em> and <em>Megacyclops viridis</em> from South East England, UK against newly-hatched French <em>Ae. albopictus</em> larvae across a relevant temperature range (15, 20, and 25ºC). Predator-absent controls were included in all experiments to account for background prey mortality. We found that both <i>M. albidus</i> and<i> M. viridis </i>display type II functional response curves, and that both would therefore be suitable biocontrol agents in the event of an <i>Ae. albopictus</i> invasion in the UK. No significant effect of temperature on the predation interaction was detected by either type of analysis. However, the predation efficiency analysis did show differences due to predator species. The results suggest that <i>M. viridis</i> would be a superior predator against invasive <i>Ae. albopictus</i> larvae due to the larger size of this copepod species, relative to <i>M. albidus</i>. Our work highlights the importance of size relationships in predicting interactions between invading prey and local predators.</p>
Data from: Gape-limited predators as agents of selection on the defensive morphology of an invasive invertebrate
Invasive species have widespread and pronounced effects on ecosystems and adaptive evolution of invaders is often considered responsible for their success. Despite the potential importance of adaptation to invasion, we still have limited knowledge of the agents of natural selection on invasive species. Bythotrephes longimanus, a cladoceran zooplankton, invaded multiple Canadian Shield lakes over the past several decades. Bythotrephes have a conspicuous caudal process (tail spine) that provides a morphological defense against fish predation. We measured viability selection on the longest component of the Bythotrephes spine, the distal spine segment, through a comparison of the lengths of first and second instar Bythotrephes collected from lakes differing in the dominance of gape-limited predation (GLP) and non-gape-limited predation (NGLP) by fish. We found that natural selection varied by predator gape-limitation, with strong selection (selection intensity: 0.20-0.79) for increased distal spine length in lakes dominated by GLP, and no significant selection in lakes dominated by NGLP. Further, distal spine length was 17% longer in lakes dominated by GLP, suggesting the possibility of local adaptation. As all study lakes were invaded less than twenty years prior to our collections, our results suggest rapid divergence in defensive morphology in response to selection from fish predators.
Data from: Impacts of mussel invasions on the prey preference of two native predators
Biotic invasions can result in the displacement of native species. This can alter the availability of native prey and the choices made by native predators. We investigated prey selection by two native South African predators, the west coast rock lobster Jasus lalandii and the starfish Marthasterias africana in response to the invasive mussels, Mytilus galloprovincialis and Semimytilus algosus, and native mussels Aulacomya atra and Choromytilus meridionalis. As the diets of lobsters and starfish are broad and have been suggested to reflect prey availability, we hypothesized that they would consume the most abundant prey, regardless of its native or alien status. Laboratory studies presented predators with varying proportions of native and invasive mussels that represented pre- and post-invasion scenarios. Mussel parameters (shell strength, adductor muscle size and energy content) that may be of importance in selection by predators were compared among species. Both predators exhibited preference towards the native mussel C. meridionalis, even when it was the least abundant prey. The selection of native species occurred despite mussel parameters suggesting invasive species would be easier to consume. These findings highlight the potential for facilitation of prey invasions, especially when predators avoid alien prey and select for native comparators that may offer resistance to the invasion through inter-specific competition. It is presently unclear how often such lack of predator-driven biotic resistance acts in combination with indirect facilitation, but interrogating the behaviors that drive such outcomes will advance our understanding of successful invasions.
ScienceDex guides
Understand access before you commit
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.