Influence of<i>Oecophylla longinoda</i>Latreille, 1802 (Hymenoptera: Formicidae) on Mango Infestation by<i>Bactrocera dorsalis</i>(Hendel) (Diptera: Tephritidae) in Relation to Senegalese Orchard Design and Management Practices

Diame, Lamine; Grechi, Isabelle; Rey, J-Y; Sane, Cheikh Amet Bassirou; Diatta, Paterne; Vayssieres, JF; Yasmine, A.; Bon, Hubert De; Diarra, Karamoko

doi:10.4001/003.023.0207

Cited by 19 publications

(11 citation statements)

References 36 publications

(2 reference statements)

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“…In particular studies, the presence of ants significantly reduced pest densities of leaf-footed bugs (Coreidae; Peng et al, 1999;Dwomoh et al, 2009), mirid bugs (Miridae; Peng et al, 1999;Ayenor et al, 2007;Dwomoh et al, 2009;Forbes and Northfield, 2017a), stink bugs (Pentatomidae; Peng et al, 1999;Hosetti and Rudresh, 2012) and fruit flies (Tephritidae;Van Mele et al, 2007;Adandonon et al, 2009;Migani et al, 2017) (Figure 4A). Particular studies reported reduced pest damage from weevils (Curculionidae; (Peng and Christian, 2007;Peng et al, 2014;Abdulla et al, 2016)), fruit flies (Peng and Christian, 2006;Diame et al, 2015;Abdulla et al, 2017), and mirid bugs (Peng et al, 1995(Peng et al, , 2014Peng and Christian, 2008;Olotu et al, 2013;Abdulla et al, 2015) in the presence of ants ( Figure 4C). Most studies focused on heteropteran, weevil, or fruit fly pests, with single studies focusing on density of leaf beetles (Chrysomelidae; average = −46.1%; Forbes and Northfield, 2017a) and thrips (Thripidae; average = −80.74%; Peng and Christian, 2004), and damage by snout moths (Pyralidae; average = −94.86%; Peng et al, 2011Peng et al, , 2014.…”

Section: Resultsmentioning

confidence: 99%

“…Ant treatments had significantly fewer pests and less pest damage than treatments without ants. Outliers are shown as white dots, while the solid black line indicates the median and the box shows the distribution of the dataset compiled from 25 studies (Peng et al, 1995(Peng et al, , 1999(Peng et al, , 2011(Peng et al, , 2012(Peng et al, , 2013(Peng et al, , 2014Sporleder and Rapp, 1998;Peng and Christian, 2004, 2005b, 2008Ayenor et al, 2007;Van Mele et al, 2007;Adandonon et al, 2009;Dwomoh et al, 2009;Hosetti and Rudresh, 2012;Olotu et al, 2013;Pierre and Idris, 2013;Abdulla et al, 2015Abdulla et al, , 2016Abdulla et al, , 2017Anato et al, 2015;Diame et al, 2015;Forbes and Northfield, 2017a).…”

Section: Discussionmentioning

confidence: 99%

“…Some honeydew producers can be vectors for plant viruses or other pathogens (e.g., Parrella et al, 2003;Dzahini-Obiatey et al, 2006;Tsai et al, 2010), with the potential to yield infections that harm plants. Because weaver ants tend a wide diversity of potential pathogen vectors this indirect facilitation of plant diseases could be widespread if overlooked; for example, a survey of O. smaragdina in tropical northern Australia revealed that ants were engaged in tropobiotic relationships (Peng et al, 1995(Peng et al, , 2011(Peng et al, , 2012(Peng et al, , 2014Sporleder and Rapp, 1998;Peng and Christian, 2006, 2008Ayenor et al, 2007;Van Mele et al, 2007;Adandonon et al, 2009;Dwomoh et al, 2009;Abdulla et al, 2015Abdulla et al, , 2016Abdulla et al, , 2017Anato et al, 2015;Diame et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

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Weaver Ants Provide Ecosystem Services to Tropical Tree Crops

2019

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Generalist predators bring a complex mix of beneficial and harmful effects to agroecosystems. When these predators feed on herbivorous pests, biological control is improved with the potential to increase crop yield. However, generalists often feed on predators, pollinators, and plants, which might worsen pest outbreaks and reduce fruit set. For example, weaver ants (Oecophylla smaragdina) are major predators of several key, economically-damaging pest insects of tropical fruit and nut crops. Yet the ants also attack other predatory arthropods and important pollinators, while tending trophobiont honeydew producers like mealybugs (Pseudococcidae) that are themselves pests. Finally, ants will supplement their diet with sugars from floral and extrafloral nectaries, a form of plant feeding that presumably carries a physiological cost to the plant. Here, across previously-published experimental studies that compared treatments where ants were present vs. excluded, we summarize the effects of weaver ants on beneficial and pest insects and tree-crop productivity. Our quantitative review revealed nearly ubiquitous benefits of Oecophylla ants for tropical agriculture. Treatments with ants present generally showed lower pest densities and damage from pest insects in the families Coreidae, Miridae, Pentatomidae, and Tephritidae. Pest reduction was seen on cacao (Theobroma cacao), cashew (Anacardium occidentale), and mango (Mangifera indica) trees. The single exception to these pest reductions occurred when ants facilitated the population growth of mealybugs and other honeydew producers. In general, we found that Oecophylla ants provided the valuable ecosystem service of natural pest control to a diversity of tropical tree crops. Despite the potential for the ants to harm other predators or pollinators, evidence for these ecosystem disservices was rare and other beneficial insects co-exist well with this group of ants. Our findings bolster the general finding that ant species that tend herbivores who are not themselves pests can provide broad-reaching benefits to plant productivity. More generally, our findings are consistent with the many cases where non-pest prey bolster densities of polyphagous predators with benefits for biological control despite some degree of plant feeding by the predators.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Weaver Ants Provide Ecosystem Services to Tropical Tree Crops

2019

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“…Van Mele et al (2007) reported that mango farmers who tolerated the vicious African Weaver Ant, Oecophylla longinoda (Latreille) (Hymenoptera: Formicidae), had better management of the invasive pest and subsequently harvested superior quality fruit. In trees where the weaver ant has nests, B. dorsalis activity is substantially reduced and infestation is curtailed (Diamé et al 2015). Ant effect is mainly attributed to both direct and indirect effects involving predatorprey interactions and olfaction (Migani et al 2017).…”

Section: Use Of Predatorsmentioning

confidence: 99%

Important alien and potential native invasive insect pests of key fruit trees in Sub-Saharan Africa: advances in sustainable pre- and post-harvest management approaches

2022

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Fruit production in Sub-Saharan Africa is of paramount importance both socially and economically. Millions of farmers derive livelihoods from mango, avocado, citrus, cashew, and coconut farming, but native and alien invasive species constrain production The region’s capacity to contain invasives is weak due to the absence of national and institutional support systems for early detection, containment, eradication, or management of the pests. Climate change is expected to play a huge role in the influx of more alien invasive species and the shift of ecological requirements of some native species. Though a fair share of pre-and post-management pest management techniques for several insect pests has been developed, adoption and adaptation of the options are limited. Data on economic and social implications are largely lacking, making it challenging to implement informed policy decisions. The existence of the “Strategy for Managing Invasive Species in Africa 2021–2030” promises a paradigm shift in the management of invasives, from reactive thinking to coordinated proactive approaches. The uncoordinated deployment of management measures in the region and the lack of funding, play a negative role in managing the pests effectively. Prospects for enhanced future research are wide, and efforts are currently being channeled to Area-Wide-Integrated Pest Management in a bottom-up approach with stakeholders owning the process. Participatory development of technologies is also taking centre stage, paving the way for increased adoption and adaptation. Postharvest technologies promise to provide the adequate phytosanitary assurance required by countries importing fruit from Sub-Saharan Africa.

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“…A solution has been implemented through the presence of the arboreal weaver ant Oecophylla longinoda Latreille (Hymenoptera: Formicidae) in large parts of Sub‐Saharan Africa, including Senegal. Indeed, this generalist predator exerts aggressive control over its territories, which include multiple host trees such as mango and citrus, reducing the fly pest densities through predation and repellence (Diamé et al, 2015; Vayssières et al, 2016; Way, 1954). As dominant generalist predators, weaver ants are however responsible for negative interactions towards beneficial organisms such as some pollinators (Tsuji et al, 2004), parasitoids (Migani et al, 2017; Tanga et al, 2015) and a lynx spider ( Oxyopes sp.)…”

Section: Introductionmentioning

confidence: 99%