Glycaspis brimblecombei (Hemiptera: Psyllidae) attack patterns on different Eucalyptus genotypes

10.7287/peerj.preprints.2783v1 ◽

2017 ◽

Author(s):

Juliana Tuller ◽

Karla Nunes Oliveira ◽

Jhonathan Oliveira Silva ◽

Maurício Lopes de Faria ◽

Mario Marcos do Espírito-Santo ◽

...

Keyword(s):

Insect Pest ◽

Mortality Rates ◽

Monthly Rainfall ◽

Adaxial Surface ◽

Glycaspis Brimblecombei ◽

Parasitism Rates ◽

Attack Patterns ◽

Red Gum Lerp Psyllid ◽

One Year

Background. The red gum lerp psyllid Glycaspis brimblecombei Moore (Hemiptera: Psyllidae), an eucalypt insect pest from Australia, was reported in Brazil in 2003. This study evaluated damage patterns of this pest and the parasitism rates of Psyllaephagus bliteus (Hymenoptera: Encyrtidae) on E. camaldulensis and its hybrids E. urophylla X E. camaldulensis and E. urophylla X E. grandis. Methods. Plantation plots of three eucalypt genotypes were evaluated over one year. The eucalypt leaves were collected and examined. Results. Damage by G. brimblecombei was lower on the hybrid genotypes and on the adaxial surface of the eucalypt leaves. Glycaspis brimblecombei egg and nymph density correlated negatively with monthly rainfall. Nymph parasitism by P. bliteus was low (2.9%) independent of genotype and did not vary throughout the year. Discussion. The use of less susceptible eucalypt genotypes (e.g., hybrids) seems to be an alternative to G. brimblecombei management because mortality rates for this pest resulting from P. bliteus parasitism were low.

Glycaspis brimblecombei (Hemiptera: Psyllidae) attack patterns on different Eucalyptus genotypes

10.7287/peerj.preprints.2783 ◽

2017 ◽

Author(s):

Juliana Tuller ◽

Karla Nunes Oliveira ◽

Jhonathan Oliveira Silva ◽

Maurício Lopes de Faria ◽

Mario Marcos do Espírito-Santo ◽

...

Keyword(s):

Insect Pest ◽

Mortality Rates ◽

Monthly Rainfall ◽

Adaxial Surface ◽

Glycaspis Brimblecombei ◽

Parasitism Rates ◽

Attack Patterns ◽

Red Gum Lerp Psyllid ◽

One Year

Background. The red gum lerp psyllid Glycaspis brimblecombei Moore (Hemiptera: Psyllidae), an eucalypt insect pest from Australia, was reported in Brazil in 2003. This study evaluated damage patterns of this pest and the parasitism rates of Psyllaephagus bliteus (Hymenoptera: Encyrtidae) on E. camaldulensis and its hybrids E. urophylla X E. camaldulensis and E. urophylla X E. grandis. Methods. Plantation plots of three eucalypt genotypes were evaluated over one year. The eucalypt leaves were collected and examined. Results. Damage by G. brimblecombei was lower on the hybrid genotypes and on the adaxial surface of the eucalypt leaves. Glycaspis brimblecombei egg and nymph density correlated negatively with monthly rainfall. Nymph parasitism by P. bliteus was low (2.9%) independent of genotype and did not vary throughout the year. Discussion. The use of less susceptible eucalypt genotypes (e.g., hybrids) seems to be an alternative to G. brimblecombei management because mortality rates for this pest resulting from P. bliteus parasitism were low.

Factors influencing the occurrence of fall armyworm parasitoids in Zambia

Journal of Pest Science ◽

10.1007/s10340-020-01320-9 ◽

2020 ◽

Author(s):

Léna Durocher-Granger ◽

Tibonge Mfune ◽

Monde Musesha ◽

Alyssa Lowry ◽

Kathryn Reynolds ◽

...

Keyword(s):

Biological Control ◽

Natural Enemies ◽

Smallholder Farmers ◽

Insect Pest ◽

Fall Armyworm ◽

Parasitoid Species ◽

Maize Crop ◽

Parasitism Rates ◽

Control Programmes ◽

Interest In Research

AbstractInvasive alien species have environmental, economic and social impacts, disproportionally threatening livelihood and food security of smallholder farmers in low- and medium-income countries. Fall armyworm (FAW) (Spodoptera frugiperda), an invasive insect pest from the Americas, causes considerable losses on maize to smallholder farmers in Africa since 2016. The increased use of pesticides to control FAW in Africa raises concerns for health and environmental risks resulting in a growing interest in research on biological control options for smallholder farmers. In order to evaluate the occurrence of local natural enemies attacking FAW, we collected on a weekly basis FAW eggs and larvae during a maize crop cycle in the rainy season of 2018–2019 at four locations in the Lusaka and Central provinces in Zambia. A total of 4373 larvae and 162 egg masses were collected. For each location and date of collection, crop stage, the number of plants checked and amount of damage were recorded to analyse which factors best explain the occurrence of the natural enemy species on maize. Overall parasitism rates from local natural enemies at each location varied between 8.45% and 33.11%. We identified 12 different egg-larval, larval and larval-pupal parasitoid species. Location, maize growth stage, pest density and larval stage significantly affected parasitoid species occurrence. Our findings indicate that there is potential for increasing local populations of natural enemies of FAW through conservation biological control programmes and develop safe and practical control methods for smallholder farmers.

Re-Visiting the Incidence of Environmental Factors on a Pre-Imaginal Population of the Red Gum Lerp Psyllid, Glycaspis brimblecombei Moore

Insects ◽

10.3390/insects11120860 ◽

2020 ◽

Vol 11 (12) ◽

pp. 860

Author(s):

Jürgen Junk ◽

Michael Eickermann ◽

Milan Milenovic ◽

Pompeo Suma ◽

Carmelo Rapisarda

Keyword(s):

Relative Humidity ◽

Air Temperature ◽

Climatic Factors ◽

Eucalyptus Camaldulensis ◽

Fixed Number ◽

Invasive Pest ◽

Time Interval ◽

Climatic Data ◽

Glycaspis Brimblecombei ◽

Red Gum Lerp Psyllid

The red gum lerp psyllid, Glycaspis brimblecombei Moore (Hemiptera: Aphalaridae), is an invasive pest of Eucalyptus trees worldwide, responsible for serious damage, including the death of plants. Knowledge about the incidence of climatic factors on the insect development are essential to define useful strategies for controlling this pest. To this aim, G. brimblecombei has been sampled by two different methods from April 2012 to February 2013 in eastern Sicily on Eucalyptus camaldulensis in nine different sites, where the main climatic data (air temperature, relative humidity, and precipitation) have been also registered. The Glycaspis brimblecombei population showed a similar trend in all nine sites, positively correlated only with air temperature, but a negative correlation has emerged with precipitation and relative humidity. The results show the need for a deeper understanding of the role played by other abiotic (such as different concentrations of CO2) and biotic (e.g., the antagonistic action of natural enemies, competition with other pests, etc.) factors. The greater sensitivity, even at low densities of psyllid, of sampling methods based on the random collection of a fixed number of leaves compared to methods based on the collection of infested leaves in a fixed time interval has been also outlined.

Insect pest species of Eucalyptus in Gibraltar

The Entomologist s monthly magazine ◽

10.31184/m00138908.1561.4010 ◽

2020 ◽

Vol 156 (1) ◽

pp. 51-57

Author(s):

C. Malumphy ◽

R. Guillem ◽

C. Perez ◽

K. Bensusan

Keyword(s):

Insect Pest ◽

Eucalyptus Camaldulensis ◽

Pest Species ◽

Bronze Bug ◽

Glycaspis Brimblecombei ◽

The Status ◽

Leptocybe Invasa ◽

Potential Impact ◽

Phoracantha Recurva ◽

First Time

Four invasive eucalypt-feeding insects, native to Australia, are recorded from Gibraltar for the first time: the gall-forming wasps Ophelimus maskelli (Ashmead) and Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae), the lerp-forming psyllid Glycaspis brimblecombei Moore (Hemiptera: Aphalaridae), and the bronze bug Thaumastocoris peregrinus Carpintero & Dellapé (Hemiptera: Thaumastocoridae), whilst the status of two Eucalyptus longhorned borers, Phoracantha recurva Newman and P. semipunctata (Fabricius) (Coleoptera: Cerambycidae), is summarised. The former five species have been found on the red-gum tree Eucalyptus camaldulensis Dehnh., growing in the urban environment in Gibraltar. The potential impact of these invasive species is discussed.

One-Year Morbidity and Mortality Rates Associated with Clipping Unruptured Intracranial Aneurysms

10.1055/s-0039-1679762 ◽

2019 ◽

Author(s):

Khodayar Goshtasbi ◽

Ronald Sahyouni ◽

Alice Wang ◽

Edward Choi ◽

Gilbert Cadena ◽

...

Keyword(s):

Intracranial Aneurysms ◽

Mortality Rates ◽

Morbidity And Mortality ◽

Unruptured Intracranial Aneurysms ◽

One Year

THE SUCCESS OF THE LUCERNE MESSAGE IN MARLBOROUGH

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.1981.42.1553 ◽

1981 ◽

pp. 179-183

Author(s):

A.J. Cresswell

Keyword(s):

North America ◽

Weed Control ◽

Seed Yield ◽

Insect Pest ◽

Fold Increase ◽

Plant Spacing ◽

Insect Pest Control ◽

One Year ◽

Seed Yields ◽

New Cultivars

This paper, as well as being a testimonial to the benefit the writer has received from the Grassland Association, shows how the knowledge of scientists has been used to increase lucerne seed yields by methods of growing resistant cultivars especially for seed production as opposed to growing for hay, silage or grazing. It shows how new cultivars can be multiplied quickly by growing two crops in one year, one in each hemisphere, by using low seeding rates, wide plant spacing and very good weed control. Increased flowering of the crop has been achieved by the use of boron and the choice of time of closing; better pollination has been achieved by the use of more efficient bees - two varieties of which have been imported from North America. Weed and insect pest control and the use of a desiccant at harvest are contributing to a four-fold increase in seed yield, which should double again soon,

1497-P: Secular Trends in Incidence and One-Year Mortality Rates of Lower Extremity Amputation in People with Diabetes in Hong Kong between 2001 and 2016

Diabetes ◽

10.2337/db20-1497-p ◽

2020 ◽

Vol 69 (Supplement 1) ◽

pp. 1497-P

Author(s):

HONGJIANG WU ◽

AIMIN YANG ◽

ERIC S. LAU ◽

RONALD C. MA ◽

ALICE P. KONG ◽

...

Keyword(s):

Hong Kong ◽

Lower Extremity ◽

Mortality Rates ◽

Secular Trends ◽

Lower Extremity Amputation ◽

One Year ◽

Extremity Amputation

Investigating the Parasitoid Community Associated with the Invasive Mealybug Phenacoccus solenopsis in Southern China

Insects ◽

10.3390/insects12040290 ◽

2021 ◽

Vol 12 (4) ◽

pp. 290

Author(s):

Hua-Yan Chen ◽

Hong-Liang Li ◽

Hong Pang ◽

Chao-Dong Zhu ◽

Yan-Zhou Zhang

Keyword(s):

Biological Control ◽

Species Delimitation ◽

Southern China ◽

Insect Pest ◽

Integrated Approach ◽

Molecular Data ◽

Coi Gene ◽

Morphological Examination ◽

Accurate Identification ◽

Phenacoccus Solenopsis

The cotton mealybug Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae), is an emerging invasive insect pest in China. Hymenopteran parasitoids are the key organisms for suppressing populations of P. solenopsis in the field, and therefore could be used as biological agents. Accurate identification of the associated parasitoids is the critical step to assess their potential role in biological control. In this study, we facilitated the identification of the parasitoid composition of P. solenopsis using an integrated approach of species delimitation, combining morphology with molecular data. Eighteen Hymenoptera parasitoid species belonging to 11 genera of four families are recognized based on morphological examination and molecular species delimitation of the mitochondrial cytochrome c oxidase 1 (COI) gene and the 28S rDNA using the automatic barcode gap discovery (ABGD) and the Bayesian Poisson tree processes model (bPTP). Among these species, eight species are primary parasitoids with Aenasius arizonensis (Girault) (Hymenoptera: Encyrtidae) being the dominant taxon, while the other 10 species are probably hyperparasitoids, with a prevalence of Cheiloneurus nankingensis Li & Xu (Hymenoptera: Encyrtidae). These results indicate that parasitoid wasps associated with P. solenopsis from China are diverse and the integrated taxonomic approach applied in this study could enhance the accurate identification of these parasitoids that should be assessed in future biological control programs.

Impact of the period of the day on mortality and major cardiovascular complications after vascular surgeries

European Heart Journal ◽

10.1093/ehjci/ehaa946.3213 ◽

2020 ◽

Vol 41 (Supplement_2) ◽

Author(s):

F.A.M Cardozo ◽

T Artioli ◽

B Caramelli ◽

D Calderaro ◽

P.C Yu ◽

...

Keyword(s):

Multivariable Analysis ◽

Total Mortality ◽

Mortality Rates ◽

Cardiovascular Complications ◽

Cardiac Complications ◽

Funding Source ◽

Confounding Variables ◽

Significant Difference ◽

One Year ◽

Night Period

Abstract Introduction Patients submitted to arterial vascular surgeries are at a high risk of postoperative cardiac and non-cardiac complications, therefore developing strategies to lower perioperative complications is essential to optimize outcomes for this subgroup. Recent studies have suggested that the period of the day in which surgeries are performed may influence postoperative major cardiovascular complications but there is still no evidence of this association in vascular surgeries. Purpose Our goal is to evaluate whether the period of the day in which surgeries are performed may influence mortality and cardiovascular outcomes in patients undergoing non-cardiac vascular procedures. Methods Patients who underwent non-cardiac vascular surgeries between 2012 and 2018 were prospectively included at our cohort. For this analysis, subjects were categorized into two groups: those who underwent surgery in the morning (7am - 12am) and those who underwent surgery in the afternoon/night (12:01pm - 6:59am). The primary endpoints were to compare the incidence of major adverse cardiac events (MACE - acute myocardial infarction, acute heart failure, arrhythmias, and cardiovascular death) and total mortality between morning and afternoon/night surgeries within 30 days and one year. The secondary endpoint was the incidence of perioperative myocardial injury (PMI) in both groups. PMI was defined as an absolute elevation of high-sensitivity cardiac troponin T (hs-cTnT) concentrations ≥14ng/L. Multivariable analysis using Cox proportional regression (with Hazard Ratio – HR and Confidence Interval – 95% CI) was performed to adjust for confounding variables, including emergency and urgent surgeries. Results Of 1267 patients included, 1002 (79.1%) underwent vascular surgery in the morning and 265 (20.9%) in the afternoon/night. After adjusting for confounding variables, the incidence of MACE at 30 days was higher among those who underwent surgery in the afternoon/night period (37.4% vs 20.4% – HR 1.43, 95% CI: 1.10–1.85; p=0.008). Mortality rates were also elevated in the afternoon/night group (21.5% vs 9.9%, HR 1.59, 95% CI: 1.10–2.29; p=0.013). After one-year of follow-up the worst outcomes persisted in patients operated in the afternoon/night: higher incidence of MACE (37.7% vs 21.2%, HR 1.37, 95% CI: 1.06–1.78; p=0.017) and mortality (35.8% vs 17.6%, HR 1.72, 95% CI 1.31–2.27; p<0.001). There was no significant difference in the incidence of PMI between groups (p=0.8). Conclusions In this group of patients, being operated in the afternoon/night period was independently associated with increased mortality rates and incidence of MACE. Mortality and MACE at one year Funding Acknowledgement Type of funding source: Foundation. Main funding source(s): FAPESP - Fundação de Amparo a Pesquisa do Estado de São Paulo