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91 results for “Liviidae”
Figure 5 from: Gushki RS, Lashkari M, Mirzaei S (2018) Identification, sexual dimorphism, and allometric effects of three psyllid species of the genus Psyllopsis by geometric morphometric analysis (Hemiptera, Liviidae). ZooKeys 737: 57-73. https://doi.org/10.3897/zookeys.737.11560
Figure 5 Wing size comparison of the forewing of the males and females of P. repens, P. securicola, and P. machinosus. Means with the same letter are not significant from each other.
Figure 4 from: Gushki RS, Lashkari M, Mirzaei S (2018) Identification, sexual dimorphism, and allometric effects of three psyllid species of the genus Psyllopsis by geometric morphometric analysis (Hemiptera, Liviidae). ZooKeys 737: 57-73. https://doi.org/10.3897/zookeys.737.11560
Figure 4 Cluster analysis, using UPGMA method, of the males and females of P. repens, P. securicola, and P. machinosus.
Figure 2 from: Gushki RS, Lashkari M, Mirzaei S (2018) Identification, sexual dimorphism, and allometric effects of three psyllid species of the genus Psyllopsis by geometric morphometric analysis (Hemiptera, Liviidae). ZooKeys 737: 57-73. https://doi.org/10.3897/zookeys.737.11560
Figure 2 Detected shape differences of forewings in the female and male of P. machinosus (a Female b Male), P. securicola (c Female d Male) and P. repens (e Female f Male).
Figure 3 from: Gushki RS, Lashkari M, Mirzaei S (2018) Identification, sexual dimorphism, and allometric effects of three psyllid species of the genus Psyllopsis by geometric morphometric analysis (Hemiptera, Liviidae). ZooKeys 737: 57-73. https://doi.org/10.3897/zookeys.737.11560
Figure 3 Superimposed forewing shapes of male and females of P. machinosus, P. securicola, and P. repens.
Figure 1 from: Gushki RS, Lashkari M, Mirzaei S (2018) Identification, sexual dimorphism, and allometric effects of three psyllid species of the genus Psyllopsis by geometric morphometric analysis (Hemiptera, Liviidae). ZooKeys 737: 57-73. https://doi.org/10.3897/zookeys.737.11560
Figure 1 Position of landmarks (circles) in the right forewing of Psyllopsis machinosus. Position of landmarks follows that of Lashkari et al. (2013).
Figura 2 in Insecticidas de bajo impacto ambiental para el control de Diaphorina citri Kuwayama, 1908 (Hemiptera: Liviidae) en limón mexicano (Citrus aurantifolia (Christm.) Swingle)
Figura 2. Comparación de la eficiencia de los tratamientos en las diferentes fechas de muestreo. / Comparison of the efficiency of the treatments in the different sampling dates.
Data from: Genetic variation and structure of Diaphorina citri (Hemiptera:Liviidae) in populations from México
The Asian citrus psyllid, Diaphorina citri Kuwayama, is native to Asia but has recently invaded North America. Asian citrus psyllid is a significant pest of citrus crops by its direct feeding but, more importantly, as the vector of the bacterium 'Candidatus Liberibacter asiaticus', which causes Huanglongbing disease. Asian citrus psyllid was first found in México in 2001 and 2002 and, since then, has spread quickly across the country, suggesting rapid adaptation to new environments. Yet, we lack information on the genetic variation and structure that could facilitate or inhibit adaptation. Using six microsatellite markers, we analyzed genetic variation and structure among six localities in México: three in western states near the Pacific coast and two in the Yucatán Peninsula near the Gulf of México. We found low genetic diversity (no more than three alleles per locus) and intermediate differentiation between all populations. Asian citrus psyllid populations clustered into two genetic groups, but, surprisingly, these clusters were present in western populations. The first group included El Arenal, and the second group included Autlán de Navarro, Colima, and Tecomán. Interestingly, both of the Yucatán populations shared variation from the two clusters, suggesting admixture. We infer that reproductive isolation, barriers to gene flow, local selection, and the possibility of multiple invasions have influenced the current genetic structure of Asian citrus psyllid in México.
Data from: Genetic variation and structure of Diaphorina citri (Hemiptera:Liviidae) in populations from México
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Data from: Screening sticky cards as a simple method for improving efficiency of Diaphorina citri (Hemiptera: Liviidae) monitoring and reducing non-target organisms
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Data from: Global mtDNA genetic structure and hypothesized invasion history of a major pest of citrus, Diaphorina citri (Hemiptera: Liviidae)
The Asian citrus psyllid Diaphorina citri Kuwayama, is a key pest of citrus as the vector of the bacterium causing the 'huanglongbing' disease (HLB). To assess the global mtDNA population genetic structure, and possible dispersal history of the pest, we investigated genetic variation at the COI gene collating newly collected samples with all previously published data. Our dataset consists of 356 colonies from 106 geographic sites worldwide. High haplotype diversity (H-mean = 0.702 ± 0.017), low nucleotide diversity (π-mean = 0.003), and significant positive selection (Ka/Ks = 32.92) were observed. Forty-four haplotypes (Hap) were identified, clustered into two matrilines: Both occur in southeastern and southern Asia, North and South America, and Africa; Lineages A and B also occur in eastern and western Asia, respectively. The most abundant haplotypes were Hap4 in lineage A (35.67%), and Hap9 in lineage B (41.29%). The haplotype network identified them as the ancestral haplotypes within their respective lineages. Analysis of molecular variance showed significant genetic structure (FST = 0.62, p < 0.0001) between the lineages, and population genetic analysis suggests geographic structuring. We hypothesize a southern and/or southeastern Asia origin, three dispersal routes, and parallel expansions of two lineages. The hypothesized first route involved the expansion of lineage B from southern Asia into North America via West Asia. The second, the expansion of some lineage A individuals from Southeast Asia into East Asia, and the third involved both lineages from Southeast Asia spreading westward into Africa and subsequently into South America. To test these hypotheses and gain a deeper understanding of the global history of D. citri more data-rich approaches will be necessary from the ample toolkit of next generation sequencing (NGS). However, the current paper may serve to guide such sampling and in the development of biological control programs against the global pest D. citri.
Data from: Global mtDNA genetic structure and hypothesized invasion history of a major pest of citrus, Diaphorina citri (Hemiptera: Liviidae)
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