Cassava Production and Pest Management: Present and Potential Threats in a Changing Environment

Bellotti, Anthony C.; Campo, Beatriz Vanessa Herrera; Hyman, Glenn

doi:10.1007/s12042-011-9091-4

Cited by 86 publications

(114 citation statements)

References 83 publications

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“…We know of only one additional study predicting P. manihoti 's potential distribution, but based on correlative models [47]. This article complements the previous effort by parametrizing a mechanistic model (CLIMEX), using an integrative inductive-deductive model fitting approach.…”

Section: Discussionmentioning

confidence: 95%

The Cassava Mealybug (Phenacoccus manihoti) in Asia: First Records, Potential Distribution, and an Identification Key

Parsa

Kondo

Winotai³

2012

PLoS ONE

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Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae), one of the most serious pests of cassava worldwide, has recently reached Asia, raising significant concern over its potential spread throughout the region. To support management decisions, this article reports recent distribution records, and estimates the climatic suitability for its regional spread using a CLIMEX distribution model. The article also presents a taxonomic key that separates P. manihoti from all other mealybug species associated with the genus Manihot. Model predictions suggest P. manihoti imposes an important, yet differential, threat to cassava production in Asia. Predicted risk is most acute in the southern end of Karnataka in India, the eastern end of the Ninh Thuan province in Vietnam, and in most of West Timor in Indonesia. The model also suggests P. manihoti is likely to be limited by cold stress across Vietnam's northern regions and in the entire Guangxi province in China, and by high rainfall across the wet tropics in Indonesia and the Philippines. Predictions should be particularly important to guide management decisions for high risk areas where P. manihoti is absent (e.g., India), or where it has established but populations remain small and localized (e.g., South Vietnam). Results from this article should help decision-makers assess site-specific risk of invasion, and develop proportional prevention and surveillance programs for early detection and rapid response.

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Section: Discussionmentioning

confidence: 95%

The Cassava Mealybug (Phenacoccus manihoti) in Asia: First Records, Potential Distribution, and an Identification Key

Parsa

Kondo

Winotai³

2012

PLoS ONE

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“…and Cotesia sp. (PARRA & ZUCCHI, 1997;PARRA, 2002;BELLOTTI et al, 2012). This demonstrates that the parasitoid T. howardi has more time to locate and parasitize the host in the field, which is an important advantage, because, in the field conditions, parasitism alone is sufficient to prevent the continued cycle of the pest.…”

Section: Erinnyis Ello é Uma Das Principais Pragas Da Cultura Da Mandmentioning

confidence: 97%

“…parasitizing caterpillars and eggs of E. ello, respectively (BELLOTTI et al, 2012;BELLON et al, 2013). Pupal parasitoids have potential to E. ello control, but published reports are scarce (BELLOTTI et al, 1992 potential as an effective biological control method (PRASAD et al, 2007).…”

Section: Erinnyis Ello é Uma Das Principais Pragas Da Cultura Da Mandmentioning

confidence: 99%

Parasitism and biological aspects of Tetrastichus howardi (Hymenoptera: Eulophidae) on Erinnyis ello (Lepidoptera: Sphingidae) pupae

et al. 2015

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“…Among the generalist herbivores are a complex of non‐native mealybugs of differing host breadth, a group of native and non‐native red spider mites (Acari: Tetranychidae) and several cosmopolitan whitefly species (Hemiptera: Aleyrodidae), many of which are increasingly reported at heightened population levels . Other non‐natives, like the striped mealybug Ferrisia virgata (Cockerell), were introduced in SE Asia several decades ago, but only recently have been suspected to cause yield losses . Among the taxa endemic to Asia are several species of tetranychid mites and herbivores often associated with cassava crops such as white grubs or termites.…”

Section: The Cassava Pest and Disease Complexmentioning

confidence: 99%

Emerging pests and diseases of South‐east Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs

Graziosi

Minato

Álvarez

et al. 2016

Pest Management Science

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Cassava is a major staple, bio-energy and industrial crop in many parts of the developing world. In Southeast Asia, cassava is grown on >4 million ha by nearly 8 million (small-scale) farming households, under (climatic, biophysical) conditions that often prove unsuitable for many other crops. While SE Asian cassava has been virtually free of phytosanitary constraints for most of its history, a complex of invasive arthropod pests and plant diseases has recently come to affect local crops. We describe results from a region-wide monitoring effort in the 2014 dry season, covering 429 fields across five countries. We present geographic distribution and field-level incidence of the most prominent pest and disease invaders, introduce readily-available management options and research needs. Monitoring work reveals that several exotic mealybug and (red) mite species have effectively colonised SE Asia's main cassava-growing areas, occurring in respectively 70% and 54% of fields, at average field-level incidence of 27 ± 2% and 16 ± 2%. Cassava witches broom (CWB), a systemic phytoplasma disease, was reported from 64% of plots, at incidence levels of 32 ± 2%. Although all main pests and diseases are non-natives, we hypothesise that accelerating intensification of cropping systems, increased climate change and variability, and deficient crop husbandry are aggravating both organism activity and crop susceptibility. Future efforts need to consolidate local capacity to tackle current (and future) pest invaders, boost detection capacity, devise locally-appropriate integrated pest management (IPM) tactics, and transfer key concepts and technologies to SE Asia's cassava growers. Urgent action is needed to mobilise regional as well as international scientific support, to effectively tackle this phytosanitary emergency and thus safeguard the sustainability and profitability of one of Asia's key agricultural commodities. © 2016 Society of Chemical Industry.

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Cassava Production and Pest Management: Present and Potential Threats in a Changing Environment

Cited by 86 publications

References 83 publications

The Cassava Mealybug (Phenacoccus manihoti) in Asia: First Records, Potential Distribution, and an Identification Key

The Cassava Mealybug (Phenacoccus manihoti) in Asia: First Records, Potential Distribution, and an Identification Key

Parasitism and biological aspects of Tetrastichus howardi (Hymenoptera: Eulophidae) on Erinnyis ello (Lepidoptera: Sphingidae) pupae

Emerging pests and diseases of South‐east Asian cassava: a comprehensive evaluation of geographic priorities, management options and research needs

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