Field assessment of the potentials of some plant-derived insecticide against damage caused by Leucinodes orbonalis on eggplant (Solanum gilo) at Umudike, Nigeria

Emeasor, K. C.; Nwahiri, Nneka Fidel; Enyiukwu, David Nwazuo

doi:10.23960/jhptt.12223-32

Cited by 1 publication

(2 citation statements)

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“…Mature fruits, shoots and leaves are used in stews and soups (Han et al., 2021 ). Roots, branches and leaves are used in herbal medicines (Emeasor et al., 2022 ; Han et al., 2021 ), as such the plant is of cultural significance and is used to welcome visitors (PROTA, 2021 as cited by Emeasor et al., 2022 ).…”

Section: Unquantified Pathwaysmentioning

confidence: 99%

“…( 2023 ) Leucinodes ‘orbonalis’ S. melongena , local cultivar Lagos, Nigeria 3%–13% 15%–19% Nwana ( 1992 ) Leucinodes ‘orbonalis’ S. aethiopicum gilo Umudike, SE‐Nigeria – 38.8%–52.2% fruits/plant (calculated from the data) Emeasor and Uwalaka ( 2018 ) Leucinodes ‘orbonalis’ S. aethiopicum , two Gilo varieties Umudike, SE‐Nigeria – 67.1% (control group) Emeasor et al. ( 2022 ) Leucinodes ‘orbonalis’ S. aethiopicum , three varieties Azaguié, Côte d'Ivoire – var. Djamba F1: 28.26%–82.67% (208/173 days after transplanting [DAT]); var.…”

Section: Biologmentioning

confidence: 99%

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Pest risk assessment of African Leucinodes species for the European Union

Bragard,

Baptista,

Chatzivassiliou

et al. 2024

EFS2

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Following a request from the European Commission, the EFSA Panel on Plant Health performed a quantitative risk assessment for the EU of African Leucinodes species (Lepidoptera: Crambidae), which are fruit and shoot borers, especially of eggplant type fruit. The assessment focused on (i) potential pathways for entry, (ii) distribution of infested imports within EU, (iii) climatic conditions favouring establishment, (iv) spread and (v) impact. Options for risk reduction are discussed, but their effectiveness was not quantified. Leucinodes spp. are widely distributed across sub-Saharan Africa but are little studied and they could be much more widespread in Africa than reported. Much African literature erroneously reports them as Leucinodes orbonalis which is restricted to Asia. The import of eggplant type fruit from sub-Saharan Africa consists of special fruit types and caters mostly to niche markets in the EU. The main pathway for entry is fruit of Solanum aethiopicum and exotic varieties of eggplant (S. melongena). CLIMEX modelling was used with two possible thresholds of ecoclimatic index (EI) to assess establishment potential. Climates favouring establishment occur mostly in southern Europe, where, based on human population, 14% of the imported produce is distributed across NUTS2 regions where EI ≥ 30; or where 23% of the produce is distributed where EI ≥ 15. Over the next 5 years, an annual median estimate of ~ 8600 fruits, originating from Africa, and infested with African Leucinodes spp. are expected to enter EU NUTS2 regions where EI ≥ 15 (90% CR ~ 570-52,700); this drops to ~ 5200 (90% CR ~ 350-32,100) in NUTS2 regions where EI ≥ 30. Escape of adult moths occurs mostly from consumer waste; considering uncertainties in pathway transfer, such as adult emergence, mate finding and survival of progeny, the annual median probability of a mated female establishing a founder population in NUTS regions where EI ≥ 15 was estimated to be 0.0078 (90% CR 0.00023-0.12125). This equates to a median estimate of one founder population ~ every 128 years (90% CR approximately one every 8-4280 years). Using an EI ≥ 30, the median number of founder populations establishing in the EU annually is 0.0048 (90% CR 0.0001-0.0739), equating to a median estimate of one founder population approximately every 210 years (90% CR approximately one every 14-7020 years). Under climate change for the period 2 of 57 |

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