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49 results for “Rhynchophorus”
Figure 5 in Comparative morphology of the larvae of the palm weevils Dynamis borassi (Fabricius) and Rhynchophorus palmarum (Linnaeus) (Curculionidae: Dryophthorinae): Two major pests of peach palms in the Neotropics
Figure 5. Maxillae and labium of larva. Dynamis borassi (Fabricius): (A) ventral; (C) dorsal; (E) detail of mala, dorsal. Rhynchophorus palmarum (Linnaeus): (B) ventral; (D) dorsal; (F) detail of mala, dorsal; (G) detail of dorsal malar setae; (H) detail of ventral malar setae; (I) detail of maxillary palp. Scale bars: A-D = 1 mm, E and F = 0.2 mm, G and I = 0.1 mm, H = 0.2 mm.
Figure 2 in Monitoring of infestation percentages of the invasive red palm weevil, Rhynchophorus ferrugineus (Coleoptera: Curculionidae), and management tactics: a six-year study
Figure 2. The injection device recommended by MEWA, Saudi Arabia to control R. ferrugineus.
Figure 1 in Phoretic mites associated with Rhynchophorus phoenicis Fabricius (1880) (Coleoptera: Curculionidae) in the Kisangani region, D.R. Congo
Figure 1 Average number of mites collected per sex and sites ± standard deviation.
Data from: Body size-dependent effects on the distribution patterns of phoretic mite species assemblages on Rhynchophorus ferrugineus (Olivier, 1790)
<p>Phoretic mites attach to different body parts of the red palm weevil (RPW), Rhynchophorus ferrugineus (Olivier, 1790), to disperse. However, the question of how the patterns of attachment sites are formed remains intriguing. Here, we examined RPW-associated phoretic mites in four districts in Northern Portugal (macrohabitat), and investigated the patterns of mite distribution on six body parts of RPW (microhabitat). At the macrohabitat level, we detected seven phoretic mite taxa using the RPW host in each of the four studied districts, all documented for the first time in association with this invasive exotic species in Portugal. However, their relative abundance (species evenness) varied between districts, as did species diversity. All examined weevils carried mites, and the prevalence of the different taxa did not differ between districts or sex of weevils. Measured by mean abundance and degree of aggregation, Centrouropoda sp. proved to be the dominant taxon, while Acarus sp. and Curculanoetus rhynchophorus were considered common subordinate taxa and Uroovobella sp., Mesostigmata, Nenteria extremica and Dendrolaelaps sp. sparse taxa. At the microhabitat level, all taxa were present on all body parts of the RPW; the highest abundance was in a region encompassing the inner surface of the elytra and the membranous hind wings (subelytral space). Analysis of niche overlap revealed that the distribution patterns of phoretic mite taxa on the RPW were not randomly structured. In the subelytral space, interspecific coexistence of mites increased as a function of body size difference with the dominant Centrouropoda sp. We found that in the subelytral space the large dominant species Centrouropoda sp. displaced the larger species Uroobovella sp. and the similarly sized species Nenteria extremica, but coexisted with smaller taxa.</p>
Data from: Body size-dependent effects on the distribution patterns of phoretic mite species assemblages on Rhynchophorus ferrugineus (Olivier, 1790)
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Data from: Strong population genetic structure of an invasive species, Rhynchophorus ferrugineus (Olivier), in southern China
The red palm weevil (RPW), Rhynchophorus ferrugineus (Olivier), was initially reported in China in the 1990s and is now considered one of the most successful invasive pests of palm plants in the country. A total of 14 microsatellite loci and one mitochondrial cytochrome oxidase subunit Ι (cox I) gene fragment were used to investigate the genetic characteristics and structure of R. ferrugineus in southern China. High levels of genetic differentiation among populations and significant correlations between genetic and geographical distances indicated an important role of geographical distance in the distribution of the RPW in southern China. High gene flow between Fujian and Taiwan province populations illustrated the increased effects of frequent anthropogenic activities on gene flow between them. Genetic similarity (i.e., haplotype similarity) indicated that RPW individuals from Taiwan and Fujian invaded from a different source than those from Hainan. To some extent, the genetic structure of the RPW in southern China correlated well with the geographic origins of this pest. We propose that geographical distance, anthropogenic activities and the biological attributes of this pest are responsible for the distribution pattern of the RPW in southern China. The phylogenetic analysis suggests that the most likely native sources of the RPW in southern China are India, the Philippines, and Vietnam.
Figure 8 in Phoretic invertebrates associated with Rhynchophorus ferrugineus (Coleoptera: Curculionidae) in Canarian date palm from southern Spain
Figure 8. Bayesian inference tree from known and newly sequenced Mononchoides macrospiculum and Teratorhabditis synpapillata based on sequences of the 28S rDNA region. Bayesian posterior probabilities (%) are given for each clade. The scale bar shows the number of substitutions per site.
Figure 7 in Phoretic invertebrates associated with Rhynchophorus ferrugineus (Coleoptera: Curculionidae) in Canarian date palm from southern Spain
Figure 7. Bayesian inference tree from known and newly sequenced Mononchoides macrospiculum and Teratorhabditis synpapillata based on sequences of the 18S rDNA region. Bayesian posterior probabilities (%) are given for each clade. The scale bar shows the number of substitutions per site.
Figure 6 in Phoretic invertebrates associated with Rhynchophorus ferrugineus (Coleoptera: Curculionidae) in Canarian date palm from southern Spain
Figure 6. Trichouropoda sp. (scanning electron microscopy). (a–d) Idiosoma in dorsal, ventral, subventral and lateral views, respectively (arrows in (b) pointing to the peritremes, arrow in (c) pointing to the right stigma); (e) right stigma (arrow); (f) dorsal setae; (g, h) idiosoma anterior end in dorsal and ventral views, respectively (arrow pointing to the tritostemium); (i) right leg III (arrow pointing to the caruncle); (j) ventrianal view.
Figure 5 in Phoretic invertebrates associated with Rhynchophorus ferrugineus (Coleoptera: Curculionidae) in Canarian date palm from southern Spain
Figure 5. Rhynchophorus ferrugineus with Trichouropoda sp., in (a) dorsal and (b) ventral views. Trichouropoda sp. in (c) dorsal and (d) ventral views.
Figure 4 in Phoretic invertebrates associated with Rhynchophorus ferrugineus (Coleoptera: Curculionidae) in Canarian date palm from southern Spain
Figure 4. Mononchoides macrospiculum Troccoli, Oreste, Tarasco, Fanelli and De Luca, 2015 (scanning electron microscopy). (a, b) Lip region (arrow pointing to the phasmid); (c, d) cuticle (having numerous bacteria along the longitudinal grooves); (f–h) male posterior end. GP = genital papilla; ph = phasmid.
Figure 2. Teratorhabditis synpapillata Sudhaus, 1985 in Phoretic invertebrates associated with Rhynchophorus ferrugineus (Coleoptera: Curculionidae) in Canarian date palm from southern Spain
Figure 2. Teratorhabditis synpapillata Sudhaus, 1985 (scanning electron microscopy). (a, b) Lip region (arrow pointing to the phasmids); (c) female posterior end (arrow pointing to the phasmid); (d, e) cuticle (having numerous bacteria along the longitudinal grooves); (f) female tail; (g, h) male posterior end in lateral and subventral views, respectively (white arrows pointing to the genital papillae, black arrow pointing to the phasmid).
Figure 1. Teratorhabditis synpapillata Sudhaus, 1985 in Phoretic invertebrates associated with Rhynchophorus ferrugineus (Coleoptera: Curculionidae) in Canarian date palm from southern Spain
Figure 1. Teratorhabditis synpapillata Sudhaus, 1985 (light microscopy). (a) Neck (arrow pointing to the excretory pore); (b, c) anterior end at stoma and cuticle levels (arrow pointing to the amphid); (d) entire male; (e) entire female; (f) uterine egg; (g) female posterior end; (h) male posterior end. GP = genital papilla; ph = phasmid.
Figure 3 in Phoretic invertebrates associated with Rhynchophorus ferrugineus (Coleoptera: Curculionidae) in Canarian date palm from southern Spain
Figure 3. Mononchoides macrospiculum Troccoli, Oreste, Tarasco, Fanelli and De Luca, 2015 (light microscopy). (a) Entire female; (b) neck; (c, d) stoma in left and right view, respectively; (e) female reproductive system (arrows pointing to the oviduct–uterus sphincter); (f) uterine egg; (g) entire male; (h) female posterior end (arrow pointing to the phasmid); (i) testis; (j) cuticle; (k) spicules and gubernaculum; (l) male posterior end. GP = genital papilla; ph = phasmid.
FIGURE 2 in Morphology and systematics of Bursaphelenchus gerberae n. sp. (Nematoda: Parasitaphelenchidae), a rare associate of the palm weevil, Rhynchophorus palmarum in Trinidad
FIGURE 2. Scanning electron micrographs of adult females of Bursaphelenchus gerberae n. sp. A) Head, lateral view. B) Almost en face view of same female. C) Almost en face view of different female.
FIGURE 3 in Morphology and systematics of Bursaphelenchus gerberae n. sp. (Nematoda: Parasitaphelenchidae), a rare associate of the palm weevil, Rhynchophorus palmarum in Trinidad
FIGURE 3. Scanning electron micrographs of adult male tail region of Bursaphelenchus gerberae n. sp. A) Almost ventral view of tail with protracted spicules with lateral projections and cucullae, asymmetric presentation of paired P3 papillae and P4 "glandpapillae", rounded bursal flap, and lateral incisures, arrows = P4 papillae. B) Almost ventral view of different mail tail with protracted spicules with lateral projections and cucullae and single preanal P1 and preanal pair of P2 papillae. C) Ventral view of different male tail tip showing rounded bursal flap and symmetrical pairs of P3 papillae and P4 "glandpapillae" (= arrows).
FIGURE 1 in Morphology and systematics of Bursaphelenchus gerberae n. sp. (Nematoda: Parasitaphelenchidae), a rare associate of the palm weevil, Rhynchophorus palmarum in Trinidad
FIGURE 1. Adult females and males of Bursaphelenchus gerberae n. sp. in lateral view (except where noted). A) Whole female. B) Whole male. C) Anterior body of female. D) Vulva, vagina, postuterine sac of female reproductive system. E,F) Female tail variability G) Male tail (ventral view). H) Male tail. I) Spicules (ventral view). J–L) Different focal planes through spicules of single male. M–O) Different focal planes through spicules of different male specimen. J–O) Lines drawn through the anteriormost points along the capitulum and extending the posterior dorsal lamina for each spicule are shown.
FIGURE 4 in Morphology and systematics of Bursaphelenchus gerberae n. sp. (Nematoda: Parasitaphelenchidae), a rare associate of the palm weevil, Rhynchophorus palmarum in Trinidad
FIGURE 4. Photomicrographs of adults of Bursaphelenchus in lateral view. A–C) Bursaphelenchus gerberae n. sp. A) Anterior region of female. B) Female tail. C) Male tail with spicules. D) Bursaphelenchus hofmanni male tail with spicules. E) Bursaphelenchus paracorneolus male tail with spicules. F) Bursaphelenchus hylobianum male tail with spicules.
FIG. 5 in Synonymy of Rhynchophorus ferrugineus (Olivier), 1790 and R. vulneratus (Panzer), 1798 (Coleoptera, Curculionidae, Rhynchophorinae)
FIG. 5. Larval labrum of R. vulneratus showing the location of the epipharyngeal sensory pore (ESP), seta 1 (S1) and seta 2 (S2). Magnification 1006. Photograph: J. Gibson.
FIG. 8. RAPD fragments amplified using primers 617–624 in Synonymy of Rhynchophorus ferrugineus (Olivier), 1790 and R. vulneratus (Panzer), 1798 (Coleoptera, Curculionidae, Rhynchophorinae)
FIG. 8. RAPD fragments amplified using primers 617–624 on DNA from R. ferrugineus (F) and R. vulneratus (V) specimens from Bojong Kalong, Java. Primer nucleotide sequences (5'–3'): 617, CGG-ACT-ATG-T; 618, CGG-ACT-ATG-T; 619, TTC-CCT- AGC-G; 620, TTG-CGC-CCG-G; 621, GTC-TGC-GCT-A; 622, ACA-GGT-GGT-T; 623, TGC-GGG-ACT-G; 624, GTG-ATA-AGC-C.
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