A Review of White Mango Scale (Aulacaspis tubercularis Newstead; Hemiptera: Diaspididae) in Sub-Saharan Africa: Distribution, Impact and Management Strategies

Otieno, Hillary M. O.

doi:10.17582/journal.pjar/2021/34.1.227.238

Cited by 7 publications

(14 citation statements)

References 20 publications

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“…Aulacaspis tubercularis is a polyphagous invasive insect pest that has spread rapidly and has the potential to spread further causing huge damage to crops of economic importance including mango 1,2,14 . Although it is an important pest, studies on its biology and ecology are limited.…”

Section: Discussionmentioning

confidence: 99%

“…Since 2010, A. tubercularis has received considerable attention in various countries as an emerging pest of mango due to its economic importance 11,13 . These countries include Spain, 14 Mexico, 11 Egypt, 15 Argentina, 16 Ethiopia, 17,18 India, China, Pakistan, 6 and South Africa 19 among others 1,4 . For instance, in Mexico, A. tubercularis is ranked as the second most damaging pest of mango after the fruit flies complex, which causes 33% of the fruits damage 11 .…”

Section: Introductionmentioning

confidence: 99%

“…The white mango scale, Aulacaspis tubercularis (Newstead) (Hemiptera: Diaspididae), is one of the most important insect pests threatening crop production, especially mango in many countries in the world. 1,2 It is a cryptogenic and polyphagous invasive species that is native to the Asian continent 3 but is currently distributed in over 72 countries in Africa, Asia, Europe, Oceania, and South and Central America. 2 It is believed that the spread of A. tubercularis occurred through the trade and transportation of plant materials such as fruit and seedlings.…”

Section: Introductionmentioning

confidence: 99%

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Predicting the habitat suitability of the invasive white mango scale,Aulacaspis tubercularis; Newstead, 1906 (Hemiptera: Diaspididae) using bioclimatic variables

Azrag

Mohamed

Ndlela

et al. 2022

Pest Management Science

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BACKGROUND: The white mango scale, Aulacaspis tubercularis (Hemiptera: Diaspididae), is an invasive pest that threatens the production of several crops of commercial value including mango. Though it is an important pest, little is known about its biology and ecology. Specifically, information on habitat suitability of A. tubercularis occurrence and potential distribution under climate change is largely unknown. In this study, we used four ecological niche models, namely maximum entropy, random forest, generalized additive models, and classification and regression trees to predict the habitat suitability of A. tubercularis under current and future [representative concentration pathways (RCPs): RCP4.5 and RCP8.5 of the year 2070] climatic scenarios, using bioclimatic variables. Models' performance was evaluated using the true skill statistic (TSS), the area under the curve (AUC), correlation (COR), and the deviance. RESULTS: All models sufficiently predicted the occurrence of A. tubercularis with high accuracy (AUC ≥ 0.93, TSS ≥ 0.81 and COR ≥ 0.77). The random forest algorithm had the highest accuracy among the four models (AUC = 0.99, TSS = 0.93, COR = 0.90, deviance = 0.26). Temperature seasonality (Bio4), mean temperature of the driest quarter (Bio9), and precipitation seasonality (Bio15) were the most important variables influencing A. tubercularis occurrence. Models' predictions showed that countries in east, south, and west Africa are highly suitable for A. tubercularis establishment under current conditions. Similarly,

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Predicting the habitat suitability of the invasive white mango scale,Aulacaspis tubercularis; Newstead, 1906 (Hemiptera: Diaspididae) using bioclimatic variables

Azrag

Mohamed

Ndlela

et al. 2022

Pest Management Science

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“…Life cycle development occurs in 35 -40 days in summer and 70 -85 days in winter (Northern Territory Government of Australia, 2019). In Ecuador, the life cycle was reported to last approximately 52 days in females and 36 in males (Otieno, 2021). The total developmental period of one generation in winter, spring and summer simulated conditions was 68.9, 52.5 and 42.7 days, respectively (Labuschagne, 1993).…”

Section: Adultmentioning

confidence: 99%

Pest categorisation of Aulacaspis tubercularis

Bragard¹,

Baptista²,

Chatzivassiliou³

et al. 2022

EFS2

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The EFSA Panel on Plant Health performed a pest categorisation of Aulacaspis tubercularis (Hemiptera: Diaspididae), the white mango scale, for the EU. A. tubercularis is a tropical species that originates from Asia but is now established in several tropical and subtropical regions throughout the world. It also occurs within the EU and is established in Italy, Portugal and Spain. A. tubercularis is not listed in Commission Implementing Regulation (EU) 2019/2072. It is polyphagous, feeding on plants in more than 37 genera in 23 families and is most frequently reported on mango (Mangifera indica). Indeed, it is considered one of the key pests of mango crops around the world. No evidence was found indicating damage to crops other than mango. A. tubercularis is established in southern Spain (Andalusia) with four overlapping generations and two population peaks, one in summer and another in autumn. Andalusia is the main mango producing area of the EU and A. tubercularis can cause losses through downgrading of fruit. The main natural dispersal stage is the first instar, which crawls over the host plant or may be dispersed further by wind and animals. Plants for planting and fruits provide potential pathways for further entry and spread. Climatic conditions and availability of host plants in southern EU countries are conducive for establishment. Phytosanitary measures are available to reduce the likelihood of further entry and further spread. A. tubercularis satisfies the criteria that are within the remit of EFSA to assess for it to be regarded as a potential Union quarantine pest.

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“…The stalk end of the fruit is shallowly sunken, and the apex is rounded [ 3 ]. Mangoes are a cash-crop yield due to their excellent adaptability to new reclaimed soil conditions [ 4 ], and ability to produce an acceptable yield under irrigation water farming settings with restricted availability [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrogel Improved Growth and Productive Performance of Mango Trees under Semi-Arid Condition

Alshallash

Sharaf

Hamdy

et al. 2022

Gels

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Nowadays, the production of new mango cultivars is increased in many countries worldwide. The soil application of hydrogel represents a novel approach in the fruit trees industry. This investigation aims to study the effect of adding hydrogel (as soil conditioner) on the growth and yield of Shelly cv. mango trees. The experimental groups were assigned to a control group and three other treated groups, including 250, 500, or 750 g hydrogel∙tree−1. The results demonstrated that all applications of hydrogel composite had higher vegetative growth parameters, yield, and fruit quality characteristics of Shelly cv. mango trees compared to the control. The treatment of 750 g hydrogel∙tree−1 had higher values of vegetative growth parameters such as the leaf area, shoot length and tree canopy volume, compared to the control group and the other treatments. Similarly, higher values for yield and fruit quality were observed in the treatment of 750 g hydrogel∙tree−1. In conclusion, different amounts of hydrogel agent can improve the production and fruit quality of Shelly cv. mango trees in arid and semi-arid conditions in a dose-dependent manner.

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A Review of White Mango Scale (Aulacaspis tubercularis Newstead; Hemiptera: Diaspididae) in Sub-Saharan Africa: Distribution, Impact and Management Strategies

Cited by 7 publications

References 20 publications

Predicting the habitat suitability of the invasive white mango scale,Aulacaspis tubercularis; Newstead, 1906 (Hemiptera: Diaspididae) using bioclimatic variables

Predicting the habitat suitability of the invasive white mango scale,Aulacaspis tubercularis; Newstead, 1906 (Hemiptera: Diaspididae) using bioclimatic variables

Pest categorisation of Aulacaspis tubercularis

Hydrogel Improved Growth and Productive Performance of Mango Trees under Semi-Arid Condition

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