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981 results for “Alienates”
Native fauna interact differently with native and alien trees in a tropical megacity
<p>These data files contain data collected on the interaction of urban avian and mammalian pollinators in Bengaluru, India. These data were collected on 8 species each of native and alien tree species in the city. Animals interacting with the trees were observed from December 2019 to March 2020. The observations were made by two observers and classified into various categories like pollination, nectar theft, flower depredation or merely occupancy of the trees. Data on the various tree characteristics like the height and floral display sizes are also included. </p> <p>Apart from the files that summarise the raw data, here we have also uploaded R files that were used for the data analyses.</p> <p>Each of the fields in the dataset are explained in more detail in the annotation word file.</p>
Cultivated alien plants with high invasion potential are more likely to be traded online in China
<p>Biological invasions have become a worldwide problem, and measures to efficiently prevent and control invasions are still being developed. Like many other parts of the world, China is undergoing a dramatic increase in plant invasions. Most of the currently 933 established (i.e., naturalized) plant species, of which 214 are categorized as invasive, have been introduced into China for cultivation. It is likely that many of those species are still being traded, particularly online, by plant nurseries. However, studies assessing whether naturalized and invasive species are currently being traded more or less than non-naturalized aliens are rare. We extracted online-trade information for 13,718 cultivated alien plant taxa on 1688.com, the largest website for domestic B2B in China. We analyzed how the presence in online-nursery catalogues, the number of online nurseries that offer the species for sale, and the product type (i.e., seeds, live plants and vegetative organs) differed among non-naturalized, naturalized non-invasive and invasive species. Compared to non-naturalized taxa, naturalized non-invasive and invasive taxa were 3.7 to 5.2 times more likely available for sale. Naturalized non-invasive and invasive taxa were more frequently offered as seeds by online nurseries, whereas non-naturalized taxa were more frequently offered as live plants. Based on these findings, we propose that, to reduce the further spread of invasive and potentially invasive plants, implementation of plant-trade regulations and a monitoring system of the online horticultural supply chain will be essential.</p>
Fig. 4 in Two Asian freshwater snails newly introduced into South Africa and an analysis of alien species reported to date
Fig. 4. Gyraulus chinensis from Amatikulu. Live specimens (4A–B, photos: H. Madsen) and specimen preserved in 70 % ethanol (4C, photo: N. Miranda). The shell of the specimen in 4B shows patches of erosion. Note the pigmented mantle in both live and preserved specimens.
Fig 3 in Two Asian freshwater snails newly introduced into South Africa and an analysis of alien species reported to date
Fig 3. (A) Tree based on 533 nucleotides of the cytochrome c oxidase subunit I mtDNA of lymnaeid samples, with the outgroup Planorbis corneus. (B) Tree based on 360 nucleotides of the mt 16S rDNA of lymnaeid samples, with the outgroup Stagnicola elodes. Numbers on branches represent Bayesian posterior probabilities percentages, neighbour-joining and maximum parsimony bootstrap values, respectively. Only values greater than 50 % are shown; * indicates support of <50 % for distance analysis. Figures adapted from Nadasan (2011). RRA – lymnaeid samples from Amatikulu, South Africa; LND – lymnaeid samples from Durban, South Africa.
Figures 1–2 in Stictoleptura cordigera (Füssli, 1775) (Cerambycidae: Lepturinae: Lepturini), a new alien longhorn beetle introduced in Chile
Figures 1–2. Stictoleptura cordigera (Füssli) from Maule Region, Chile. 1) Male, dorsal habitus. 2) Female, dorsal habitus. Scale bar: 1 mm. Illustrations by Paula Fuenzalida.
Figure 1 in The population dynamics and reproduction of Streblospio gynobranchiata (Annelida, Spionidae), an alien polychaete worm, in the Sevastopol Bay (the Black Sea)
Figure 1. Seasonal dynamics of the average abundance of spionid polychaetes S. gynobranchiata in the innermost part of the Sevastopol Bay (2006–2007).
Figure 2 in The population dynamics and reproduction of Streblospio gynobranchiata (Annelida, Spionidae), an alien polychaete worm, in the Sevastopol Bay (the Black Sea)
Figure 2. Multi-annual dynamics of the average abundance of S. gynobranchiata in the Sevastopol Bay (2007–2013).
Figure 4. S in The population dynamics and reproduction of Streblospio gynobranchiata (Annelida, Spionidae), an alien polychaete worm, in the Sevastopol Bay (the Black Sea)
Figure 4. S. gynobranchiata: А, a body fragment of an egg-carrying female; В, a 3–chaetiger larva just hatched from egg capsule; С, a 3–chaetiger larva on the 2nd day; D, a 5–chaetiger larva equipped with anal cirri; E, a 9–chaetiger larva; F, a 13–chaetiger larva making a tube. Scale: А- F – 100 µm.
Figure 3 in The population dynamics and reproduction of Streblospio gynobranchiata (Annelida, Spionidae), an alien polychaete worm, in the Sevastopol Bay (the Black Sea)
Figure 3. Distribution of polychaete worms S. gynobranchiata (density in ind.·m-2) in the Sevastopol Bay: A – in 2007; B – in 2008; C – in 2013.
Alien plant fitness is limited by functional trade-offs rather than a long-term increase in competitive effects of native communities
<p><span>Alien plants experience novel abiotic conditions and interactions with native communities in the introduced area. Intra- and interspecific selection on functional traits in the new environment may lead to increased population growth with time since introduction (residence time). However, selection regimes might differ depending on the invaded habitat. Additionally, in high-competition habitats, a build-up of biotic resistance of native species due to accumulation of eco-evolutionary experience to aliens over time may limit invasion success. We tested if the effect of functional traits and the population dynamics of aliens depends on interspecific competition with native plant communities. We conducted a multi-species experiment with 40 annual Asteraceae that differ in residence time in Germany. We followed their population growth in monocultures and in interspecific competition with an experienced native community (varying co-existence times between focals and community). To more robustly test our findings, we used a naïve community that never co-existed with the focals. We found that high seed mass decreased population growth in monocultures but tended to increase population growth under high interspecific competition. We found no evidence for a build-up of competition-mediated biotic resistance by the experienced community over time. Instead, population growth of the focal species was similarly inhibited by the experienced and naïve community. By</span><span> comparing the effect of experienced and naïve communities on population dynamics over two years across a large set of species with a high variation in functional traits and residence time, </span><span>this study advances the understanding of the long-term dynamics of plant invasions. I</span><span>n our study system, population growth of alien species was not limited by</span> <span>an increase of competitive effects by native communities (one aspect of biotic resistance) over time. </span><span>Instead, invasion success of alien plants may be limited because initial spread in low-competition habitats requires different traits than establishment in high-competition habitats. </span></p>
FIGURE 3 in The invasive alien freshwater FLatworm Girardia tigrina (Girard, 1850) (Platyhelminthes, Tricladida) in Western Europe: new insights into its morphology, karyology and reproductive biology
FIGURE 3 Girardia tigrina from Liguria. Photomicrographs of hyperplasic ovaries and testes. A. ZMA V.Pl. 7283.1, hyperplasic ovaries located behind the brain; B. ZMA V.Pl. 7283.1, ectopic hyperplasic ovarian masses located at the level of the copulatory apparatus; C. ZMA V.Pl. 7283.1, magnification of hyperplasic ovaries, with oocytes at different stages of maturation; D. ZMA V.Pl. 7283.1, mature testes with sperm.
FIGURE 1 Girardia tigrina. A in The invasive alien freshwater FLatworm Girardia tigrina (Girard, 1850) (Platyhelminthes, Tricladida) in Western Europe: new insights into its morphology, karyology and reproductive biology
FIGURE 1 Girardia tigrina. A. Geographic range of allochthonous sexual populations (filled circles) and populations with sexualized animals (triangles and asterisk) in the Western Palaearctic; asterisk: population from Liguria investigated in the present study. B. Aquatic plants as preferential shaded microhabitat in a tank at the Botanical Garden of the University of Genoa, Liguria. C. Habitus of a living ex-fissiparous specimen of the Ligurian population. Scale bar not available.
FIGURE 5 Girardia tigrina from Liguria. CGAS Pla 18.1 in The invasive alien freshwater FLatworm Girardia tigrina (Girard, 1850) (Platyhelminthes, Tricladida) in Western Europe: new insights into its morphology, karyology and reproductive biology
FIGURE 5 Girardia tigrina from Liguria. CGAS Pla 18.1, sagittal reconstruction of the copulatory apparatus (anterior to the left).
FIGURE 6 in The invasive alien freshwater FLatworm Girardia tigrina (Girard, 1850) (Platyhelminthes, Tricladida) in Western Europe: new insights into its morphology, karyology and reproductive biology
FIGURE 6 Girardia tigrina from Liguria. Photomicrographs of the copulatory apparatus; sagittal sections. A. ZMA V.Pl. 7283.1, supernumerary penis and the main, fully developed copulatory apparatus; B. CGAS Pla 18.1, copulatory bursa with the bursal canal, penis, male atrium, and common atrium with diverticulum; C. CGAS Pla 18.2, copulatory bursa with the bursal canal, penis, and male atrium.
FIGURE 4 Girardia tigrina from Liguria. ZMA V in The invasive alien freshwater FLatworm Girardia tigrina (Girard, 1850) (Platyhelminthes, Tricladida) in Western Europe: new insights into its morphology, karyology and reproductive biology
FIGURE 4 Girardia tigrina from Liguria. ZMA V.Pl. 7283.1 A. sagittal reconstruction of the two copulatory appara- tuses (anterior to the left); B. sagittal reconstruction of the main copulatory apparatus at the level of the right branch of the bursal canal and the blind cavity (anterior to the left).
Adaptive alien genes are maintained amidst a vanishing introgression footprint in a sea squirt
<p>This zenodo archive contains the multi-locus genotype tables for the paper "Falling shoulders ahead: adaptive alien genes maintained amidst vanishing introgression footprint in sea squirts". There are three files in this archive:</p> <ul> <li>Ci_KASP_genotypes_2012.csv: genotype table for individuals sampled in 2012</li> <li>Ci_KASP_genotypes_2021.csv: genotype table for individuals sampled in 2021 as well as control individuals from the two <em>Ciona</em> species</li> <li>Ci_KASP_genotypes_hybrids.csv: genotype table for control hybrids</li> </ul>
Figure 1 in On the occurrence of the Synodontis eupterus (Mochokidae) in the Adriatic drainage system of Croatia: a case of an introduced aquarium species and suggestions for alien species detection measures
Figure 1. – Synodontis eupterus (from Mala Neretva River) (TL = 193 mm) (catalogue number SE-IOR 8112017).
Moths and butterflies on alien shores – global biogeography of non-native Lepidoptera
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Data from: Pathways of introduction of alien species in Norway
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Alien insect dispersal mediated by the global movement of commodities
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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.