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134 results for “invasion history”
Fig. 2 in Dispersal History Of An Invasive Rodent In Hungary - Subfossil Finds Of Rattus Rattus
Fig. 2. Archaeological black rat remains from the Roman Period in Europe (after AUDOIN-ROUZEAU & VIGNE 1994) complemented with Hungarian finds (shaded areas: expanse of the Roman Empire). 1: Arras–Beaudimont, France; 2: Bad Kreuznach, Germany; 3: Baron Buisson-Saint-Cyr, France; 4: Beddingham, Britain; 5: Les Ilettes–Annecy-le-Vieux, France; 6: Ladenburg, Germany; 7: Londres– Crosswall, Britain; 8: Londress–Frenchurch, Britain; 9: Taula Torralba d'en Salort–Menorca, Spain; 10: Ordona, Italy; 11: Pforzheim, Germany; 12: Pompei, Italy; 13: Portout, France; 14: Sette Finestre – Grosetto, Italy; 15: Thésée et Pouillé, France; 16: Waltersdorf, Germany; 17: Wroxeter, Britain; 18: York–Skeldergate, Britain; 19: Monte di Tuda–Crosica, France; 20: Senlis, France; 21: Sierentz– Landstrasse, France; 22: Budapest, District III., Szentendrei Road 139., Aquincum, Hungary; 23: Bu-
Global invasion history of the emerging plant pathogen Phytophthora multivora
<p><b>Abstract </b></p> <p><strong>Background: g</strong>lobal trade in living plants and plant material has significantly increased the geographic distribution of many plant pathogens. As a consequence, several pathogens have been first found and described in their introduced range where they may cause severe damage on naïve host species. Knowing the center of origin and the pathways of spread of a pathogen is of importance for several reasons, including identifying natural enemies and reducing further spread. Several <i>Phytophthora</i> species are well-known invasive pathogens of natural ecosystems, including <i>Phytophthora multivora.</i> Following the description of <i>P. multivora</i> from dying native vegetation in Australia in 2009, the species was subsequently found to be very common in South Africa where it does not cause any remarkable disease. There are now reports of <i>P. multivora</i> from many other countries worldwide, but not as a commonly encountered species in natural environments.</p> <p><strong>Results: </strong>a global collection of 335 isolates from North America, Europe, Africa, Australia, the Canary Islands, and New Zealand was used to unravel the worldwide invasion history of <i>P. multivora,</i> using 10 microsatellite markers for all isolates and sequence data from five loci from 94 representative isolates. Our population genetic analysis revealed an extremely low heterozygosity, significant non-random association of loci and substantial genotypic diversity suggesting the spread of <i>P. multivora</i> readily by both asexual and sexual propagules. The<i> P. multivora</i> populations in South Africa, Australia, and New Zealand show the most complex genetic structure, are well established and evolutionary older than those in Europe, North America and the Canary Islands.</p> <p><strong>Conclusions: a</strong>ccording to conducted analyses, the world invasion of <i>P. multivora</i> most likely commenced from South Africa, which can be considered the center of origin of the species. The pathogen was then introduced to Australia, which acted as bridgehead population for Europe and North America. Our study highlighted a complex global invasion pattern of <i>P. multivora</i>, including both direct introductions from the native population and secondary spread/introductions from bridgehead populations.</p>
Figure 6 in Head morphology reflects the introduction history in a globally invasive carnivore-the small Indian mongoose
Figure 6. Disparity in cranial and mandibular shape.
Figure 4. Cranial and mandibular shape assignments from the k in Head morphology reflects the introduction history in a globally invasive carnivore-the small Indian mongoose
Figure 4. Cranial and mandibular shape assignments from the k-NN analyses.
Figure 3 in Head morphology reflects the introduction history in a globally invasive carnivore-the small Indian mongoose
Figure 3. Linear discriminant analyses of cranial and mandibular shape from the sampled localities.
Data from: Population genetic analysis of a parasitic mycovirus to infer the invasion history of its fungal host
Hymenoscyphus fraxineus mitovirus 1 (HfMV1) occurs in the fungus Hymenoscyphus fraxineus, an introduced plant pathogen responsible for the devastating ash dieback epidemic in Europe. Here, we explored the prevalence and genetic structure of HfMV1 in order to elucidate the invasion history of both the virus and the fungal host. A total of 1298 H. fraxineus isolates (181 from Japan and 1117 from Europe) were screened for the presence of this RNA virus and 301 virus-positive isolates subjected to partial sequence analysis of the viral RNA polymerase gene. Our results indicate a high mean prevalence (78.7%) of HfMV1 across European H. fraxineus isolates, which is supported by the observed high transmission rate (average 83.8%) of the mitovirus into sexual spores of its host. In accordance with an expected founder effect in the introduced population in Europe, only 1.1% of the Japanese isolates were tested virus positive. In Europe, HfMV1 shows low nucleotide diversity but a high number of haplotypes, which seem to be subjected to strong purifying selection. Phylogenetic and clustering analysis detected two genetically distinct HfMV1 groups, both present throughout Europe. This pattern supports the hypothesis that only two (mitovirus-carrying) H. fraxineus individuals were introduced into Europe as previously suggested from the bi-allelic nature of the fungus. Moreover, our data points to reciprocal mating events between the two introduced individuals, which presumably initiated the ash dieback epidemic in Europe.
Phylogenomics resolves the invasion history of Acacia auriculiformis in Florida
<p><b>Aim:</b> <span>Understanding the genetic structure of plants in their native range is crucial when reconstructing the invasion history of weeds. This information allows researchers to pin-point the provenance of invasive plants, and to test the importance of genetic admixture in facilitating invasion success.</span> We assessed genetic structuring across the native range of <i>A. auriculiformis</i>, to determine whether genetic admixture contributes to the success of this weed in its introduced range, and test for rapid adaptation to environmental conditions in the invasive lineage.</p> <p><b>Location:</b> Australia, Papua New Guinea, Florida</p> <p><b>Taxon: </b><i>Acacia auriculiformis</i></p> <p><b>Methods: </b>We sampled <i>A. auriculiformis </i>from across its entire native distribution (northern Australia, Papua New Guinea) and its invasive range in Florida, and used Genotyping-by-sequencing (GBS) to assess population structuring.</p> <p><b>Results:</b> Principal component analysis, based on 9,591 SNPs, indicated significant differentiation among samples from Papua New Guinea, the Northern Territory (Australia), and north Queensland (Australia). Florida samples also formed a distinct cluster, with these samples most closely related to samples from the Northern Territory. These results indicate that the Florida <i>A. auriculiformis </i>lineage most likely originates from the Northern Territory, with no evidence that plants were introduced from different parts of the native range. We found evidence of allelic shifts in the Florida population, suggesting rapid adaptation to environmental conditions may contribute the success of the invasive lineage.</p> <p><b>Main conclusions: </b>Two well-known biogeographic barriers – the Carpentaria Gap and Torres Strait – have caused genome-wide divergence among <i>A. auriculiformis</i> plants from north Queensland, Northern Territory, and Papua New Guinea. The taxonomic status of these allopatric populations should be further assessed. As the Florida lineage originated in the Northern Territory the search for potential biological control agents should be focused in this region. Our results also demonstrate how artificial selection and strong genetic drift may cause introduced plants to have a unique genetic make-up not found in the native range.</p>
Figure 1 from: Zach P, Panigaj Ľ, Honěk A, Nedvěd O, Kulfan J, Martinková Z, Selyemová D, Viglášová S, Roy H (2014) The invasion history, distribution and colour pattern forms of the harlequin ladybird beetle Harmonia axyridis (Pall.) (Coleoptera, Coccinellidae) in Slovakia, Central Europe. ZooKeys 412: 89-102. https://doi.org/10.3897/zookeys.412.6587
Figure 1 - Distribution of Harmonia axyridis across Slovakia with the time sequence of the 153 records. Map of the Databank of the Fauna of Slovakia in which each "square" is approximately 11 by 12 km. White circles = 2008, grey circles = 2009, black circles = 2010–2012.
Figure 3 from: Zach P, Panigaj Ľ, Honěk A, Nedvěd O, Kulfan J, Martinková Z, Selyemová D, Viglášová S, Roy H (2014) The invasion history, distribution and colour pattern forms of the harlequin ladybird beetle Harmonia axyridis (Pall.) (Coleoptera, Coccinellidae) in Slovakia, Central Europe. ZooKeys 412: 89-102. https://doi.org/10.3897/zookeys.412.6587
Figure 3 - Percentage of melanic f. spectabilis and f. conspicua (combined) and a non-melanic f. succinea among adult Harmonia axyridis (n = 953) in eight urban areas along the 380 km long west-east transect across Slovakia. BA – Bratislava, NR – Nitra, LV – Levice, ZV – Zvolen, LC – Lučenec, RV – Rožňava, KE – Košice, MI – Michalovce. 30th July–7th August 2012
Figure 2 from: Zach P, Panigaj Ľ, Honěk A, Nedvěd O, Kulfan J, Martinková Z, Selyemová D, Viglášová S, Roy H (2014) The invasion history, distribution and colour pattern forms of the harlequin ladybird beetle Harmonia axyridis (Pall.) (Coleoptera, Coccinellidae) in Slovakia, Central Europe. ZooKeys 412: 89-102. https://doi.org/10.3897/zookeys.412.6587
Figure 2 - Frequency distribution of the records of Harmonia axyridis from Slovakia, 2008–2012 (n = 153). Data arranged by altitude (m).
Supplementary material 1 from: López DN, Fuentes-Contreras E, Ruiz C, Ide S, Estay SA (2023) A bug's tale: revealing the history, biogeography and ecological patterns of 500 years of insect invasions. NeoBiota 81: 183-197. https://doi.org/10.3897/neobiota.81.87362
Database: exotic insects of Chile
Supplementary material 1 from: Vicente S, Trindade H, Máguas C, Le Roux JJ (2023) Genetic analyses reveal a complex introduction history of the globally invasive tree Acacia longifolia. NeoBiota 82: 89-117. https://doi.org/10.3897/neobiota.82.87455
Supplementary methodology details (primers, PCR conditions) and data analyses.
Supplementary material 2 from: Vicente S, Trindade H, Máguas C, Le Roux JJ (2023) Genetic analyses reveal a complex introduction history of the globally invasive tree Acacia longifolia. NeoBiota 82: 89-117. https://doi.org/10.3897/neobiota.82.87455
Genotype data used in this study in GenAlEx format.
Data from: Population genomics shed light on the demographic and adaptive histories of European invasion in the Pacific oyster, Crassostrea gigas
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Data from: Introduction history and population genetics of intracontinental scotch broom (Cytisus scoparius) invasion
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Data from: Genetic diversity and population structure of wild sunflower (Helianthus annuus L.) in Argentina: reconstructing its invasion history
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Data from: Invasion history and demographic processes associated with rapid morphological changes in the Red-whiskered bulbul established on tropical islands
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Data from: The loneliness of the long-distance toad: invasion history and social attraction in cane toads (Rhinella marina)
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Global invasion history of the emerging plant pathogen Phytophthora multivora
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Behavioural, morphological, and life history shifts during invasive spread
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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