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6 results for “Acacia auriculiformis”
FIGURES 16–23 in A new Australian species of invasive psyllid, Acizzia convector Burckhardt & Taylor, sp. nov. (Psylloidea: Psyllidae) associated with Acacia auriculiformis and A. mangium (Fabaceae)
FIGURES 16–23. Acizzia convector Burckhardt & Taylor, sp. nov., terminalia; 16, male terminalia, in profile; 17, posterior lobe of male proctiger; 18, paramere, inner face in profile; 19, distal portion of aedeagus, in profile; 20, female terminalia, in profile; 21, detail of circumanal ring; 22, hooked seta; 23, valvulae dorsalis and ventralis.
FIGURES 1–4. 1–3 in A new Australian species of invasive psyllid, Acizzia convector Burckhardt & Taylor, sp. nov. (Psylloidea: Psyllidae) associated with Acacia auriculiformis and A. mangium (Fabaceae)
FIGURES 1–4. 1–3, Acizzia convector Burckhardt & Taylor, sp. nov. (photographs by Lyle Buss, University of Florida); 1, male; 2, female; 3, immature.—4, Monoculture of Acacia auriculiformis trees 6 m high in Florida. This field was bare ground three years prior to taking this photograph (photograph by Scott D. Krueger, Florida Department of Agriculture and Consumer Services, Division of Plant Industry).
FIGURES 5–15 in A new Australian species of invasive psyllid, Acizzia convector Burckhardt & Taylor, sp. nov. (Psylloidea: Psyllidae) associated with Acacia auriculiformis and A. mangium (Fabaceae)
FIGURES 5–15. Acizzia convector Burckhardt & Taylor, sp. nov., adults; 5–8, habitus; 5, 6, lateral view; 7, 8, dorsal view; 5, 7, 12, 14, male; 6, 8, 13, female; 9, head, dorsal view; 10, vertex, right half; 11, metatibia, base with genual spine; 12–14, fore wing; 12, 13, wing pattern; 14 surface spinules; 15, details of surface spinules in apical third of cell r2.
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>
Phylogenomics resolves the invasion history of Acacia auriculiformis in Florida
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FIGURES 24–29 in A new Australian species of invasive psyllid, Acizzia convector Burckhardt & Taylor, sp. nov. (Psylloidea: Psyllidae) associated with Acacia auriculiformis and A. mangium (Fabaceae)
FIGURES 24–29. Acizzia convector Burckhardt & Taylor, sp. nov., immature; 24, habitus, dorsal view, right side; 25, antennal segments 3–6 with rhinaria and capitate setae on segments 3 and 5; 26, apex of tarsus with claws and arolium; 27, caudal plate, ventral view, left side; 28, caudal plate, dorsal view, right side; 29, circumanal rings and anus.
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