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22 results for “Alternanthera philoxeroides”
FIGURES 8–17 in Phenrica littoralis (Bechyné, 1955) (Coleoptera: Chrysomelidae) a potential candidate for the biological control of alligator weed, Alternanthera philoxeroides (Martius) Grisebach (Amaranthaceae): redescription of the adult, first description of immature stages, and biological notes
FIGURES 8–17. Phenrica littoralis (Bechyné) (8) Hind wing. (9) Metanotum. (10) Scutellum. (11) Metaleg, detail of metafemoral spring. (12) Metendosternite, dorsal view. (13) Mandible, external face. (14) Labrum, ventral view. (15) Labrum, dorsal view. (16) Maxilla, ventral view. (17) Labium, dorsal view. Abbreviations: a, metanotal ridge a; AA, anal anterior vein; b2, metanotal ridge b2; c, metanotal ridge c; CuA, cubitoanal vein; CuA 3+4, cubito anal vein 3+4; d, metanotal ridge d; mg, median groove; MP 1-2, medial posterior vein 1-2; RA, radial vein; RP-MP2, radial posterior-medial posterior vein 2; SC, subcostal vein. Scale bars=: 0.1mm.
FIGURES 2–7 in Phenrica littoralis (Bechyné, 1955) (Coleoptera: Chrysomelidae) a potential candidate for the biological control of alligator weed, Alternanthera philoxeroides (Martius) Grisebach (Amaranthaceae): redescription of the adult, first description of immature stages, and biological notes
FIGURES 2–7. Phenrica littoralis (Bechyné) (2) Head, frontal view. (3) Head, lateral. (4) Mandible, external face. (5) Mandible, detail of mola. (6) Maxilla, ventral view. (7) Labium, dorsal view.
FIGURES 32–37 in Phenrica littoralis (Bechyné, 1955) (Coleoptera: Chrysomelidae) a potential candidate for the biological control of alligator weed, Alternanthera philoxeroides (Martius) Grisebach (Amaranthaceae): redescription of the adult, first description of immature stages, and biological notes
FIGURES 32–37. Phenrica littoralis (Bechyné), mature larvae (32) Habitus, lateral view. (33) Habitus, dorsal view. (34) Cephalic capsule, frontal view. (35) Cephalic capsule, lateral view. (36) labium and maxilla. (37) Mandible, dorsal view. Scale bars= 1mm.
FIGURES 28–31 in Phenrica littoralis (Bechyné, 1955) (Coleoptera: Chrysomelidae) a potential candidate for the biological control of alligator weed, Alternanthera philoxeroides (Martius) Grisebach (Amaranthaceae): redescription of the adult, first description of immature stages, and biological notes
FIGURES 28–31. Phenrica littoralis (Bechyné), (28) Median lobe, dorsal view. (29) Median lobe, detail of dorsal median process. (30) Median lobe, lateral view. (31) Median lobe, detail of dorsal median process. Scale bars= 1mm.
FIGURES 22–27 in Phenrica littoralis (Bechyné, 1955) (Coleoptera: Chrysomelidae) a potential candidate for the biological control of alligator weed, Alternanthera philoxeroides (Martius) Grisebach (Amaranthaceae): redescription of the adult, first description of immature stages, and biological notes
FIGURES 22–27. Phenrica littoralis (Bechyné) (22) Median lobe, dorsal view. (23) Median lobe, lateral view. (24) sternite 8. (25) Spermatheca. (26) Abdomen, male, ventral view. (27) Abdomen, female, ventral view. Scale bars= 1mm.
FIGURES 18–21 in Phenrica littoralis (Bechyné, 1955) (Coleoptera: Chrysomelidae) a potential candidate for the biological control of alligator weed, Alternanthera philoxeroides (Martius) Grisebach (Amaranthaceae): redescription of the adult, first description of immature stages, and biological notes
FIGURES 18–21. Phenrica littoralis (Bechyné) (18) Elytron ventral view, detail of binding patch. (19) Detail of binding patch, surface covered with spoonbill shaped spicules and sharktooth-shaped spicules on distal area. (20 Metendosternite. (21) Tarsal claws appendiculate. Abbreviations: shs, sharktooth spicule; sm, spiniform microtrichia; sps, spoonbill spicules.
FIGURES 38–39 in Phenrica littoralis (Bechyné, 1955) (Coleoptera: Chrysomelidae) a potential candidate for the biological control of alligator weed, Alternanthera philoxeroides (Martius) Grisebach (Amaranthaceae): redescription of the adult, first description of immature stages, and biological notes
FIGURES 38–39. Phenrica littoralis (Bechyné), pupae (38) Habitus, dorsal view. (39) Habitus, lateral view. Scale bars= 1mm.
Alternanthera philoxeroides (Amaranthaceae) - whole plant - in flower - general view
Image of Alternanthera philoxeroides (Amaranthaceae) - whole plant - in flower - general view
Alternanthera philoxeroides (Amaranthaceae) - whole plant - unspecified
Image of Alternanthera philoxeroides (Amaranthaceae) - whole plant - unspecified
Alternanthera philoxeroides (Amaranthaceae) - leaf - margin of upper + lower surface
Image of Alternanthera philoxeroides (Amaranthaceae) - leaf - margin of upper + lower surface
Alternanthera philoxeroides (Amaranthaceae) - stem - showing leaf bases
Image of Alternanthera philoxeroides (Amaranthaceae) - stem - showing leaf bases
Alternanthera philoxeroides (Amaranthaceae) - leaf - on upper stem
Image of Alternanthera philoxeroides (Amaranthaceae) - leaf - on upper stem
Alternanthera philoxeroides (Amaranthaceae) - inflorescence - frontal view of flower
Image of Alternanthera philoxeroides (Amaranthaceae) - inflorescence - frontal view of flower
Alternanthera philoxeroides (Amaranthaceae) - inflorescence - whole - unspecified
Image of Alternanthera philoxeroides (Amaranthaceae) - inflorescence - whole - unspecified
Alternanthera philoxeroides (Amaranthaceae) - whole plant - in flower - general view
Image of Alternanthera philoxeroides (Amaranthaceae) - whole plant - in flower - general view
Alternanthera philoxeroides haplotypes growth response to N and P
<p class="MsoNormal"><span><span>Interactions between invaders and resource availability may explain variation in their success or management efficacy. For widespread invaders, regional variation in plant response to nutrients can reflect phenotypic plasticity of the invader, genetic structure of invading populations, or a combination of the two. The wetland weed </span><span>Alternanthera philoxeroides</span><span> (alligatorweed) is established throughout the southeastern USA and California, and has high genetic diversity despite primarily spreading clonally. Despite its history in the USA, the role of genetic variation for invasion and management success is only now being uncovered. To better understand how nutrients and genotype may influence </span><span>A. philoxeroides</span><span> invasion, we measured the response of plants from 26 </span><span>A. philoxeroides</span><span> populations (three cp haplotypes) to combinations of nitrogen (</span><span>4 or 200 mg/L N) </span><span>and phosphorus </span><span>(0.4 or 40 mg/L P)</span><span>. We measured productivity (biomass accumulation and allocation), plant architecture (stem diameter and thickness, branching intensity) and foliar traits (toughness, dry matter content, percent N, percent P). A short-term developmental assay was also conducted by feeding a subset of plants from the nutrient experiment to the biological control agent </span><span>Agasicles hygrophila,</span><span> to determine whether increased availability of N or P to its host influenced agent performance, as has been previously suggested. </span><span>A. philoxeroides</span><span> haplotype Ap1 was more plastic than other haplotypes in response to nutrient amendments, producing more than double the biomass from low to high N and 50-68% higher shoot:root ratio than other haplotypes in the high N treatment. </span><span>A. philoxeroides</span><span> haplotypes differed in 7 of 10 variables in response to increased N. We found no differences in short-term </span><span>A. hygrophila</span><span> development between haplotypes but mass was 23% greater in high than low N treatments. This study is the first to explore the interplay between nutrient availability, genetic variation, and phenotypic plasticity in invasive characteristics of the global invader, </span><span>A. philoxeroides</span><span>.</span></span></p>
Alternanthera philoxeroides haplotypes growth response to N and P
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Rapid and widespread expansion of invasive Alternanthera philoxeroides promoted by its high and stable nitrogen, phosphorus and potassium homeostasis
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FIGURE 1 in Phenrica littoralis (Bechyné, 1955) (Coleoptera: Chrysomelidae) a potential candidate for the biological control of alligator weed, Alternanthera philoxeroides (Martius) Grisebach (Amaranthaceae): redescription of the adult, first description of immature stages, and biological notes
FIGURE 1. Phenrica littoralis (Bechyné), male, dorsal habitus.
Transcriptomics of cold stress in alligatorweed (Alternanthera philoxeroides)
GEO Series GSE63585. Alternanthera philoxeroides. 6 samples. Type: Expression profiling by high throughput sequencing.
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