Massive economic costs of biological invasions despite widespread knowledge gaps: a dual setback for India

Biological Invasions, Journal Year: 2022, Volume and Issue: 24(7), P. 2017 - 2039

Published: April 5, 2022

Abstract Biological invasions are one of the top drivers ongoing biodiversity crisis. An underestimated consequence is enormity their economic impacts. Knowledge gaps regarding costs produced by invasive alien species (IAS) pervasive, particularly for emerging economies such as India—the fastest growing economy worldwide. To investigate, highlight and bridge this gap, we synthesised data on IAS in India. Specifically, examine how distributed spatially, environmentally, sectorally, taxonomically, temporally, across introduction pathways; discuss Indian vary with socioeconomic indicators. We found that have cost between at least US$ 127.3 billion to 182.6 (Indian Rupees ₹ 8.3 trillion 11.9 trillion) over 1960–2020, these increased time. Despite massive recorded costs, most were not assigned specific regions, environments, sectors, types causal IAS, knowledge more pronounced India than rest world. When specifically assigned, maximum incurred West, South North India, insects semi-aquatic ecosystems; they mainly public social welfare sector, associated damages losses rather management expenses. Our findings indicate reported grossly underestimate actual especially considering expected given India’s population size, gross domestic product high numbers without costs. This analysis improves our negative impacts biological burden can represent its development. hope study motivates policymakers address socio-ecological issues launch a national invasion research programme, since growth will be accompanied greater global change.

Language: Английский

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Can ecological niche models be used to accurately predict the distribution of invasive insects? A case study of Hyphantria cunea in China

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(3)

Published: March 1, 2024

Abstract In recent decades, ecological niche models (ENMs) have been widely used to predict suitable habitats for species. However, invasive organisms, the prediction accuracy is unclear. this study, we employed most maximum entropy (MaxEnt) model and ensemble (EM) Biomod2 verified practical effectiveness of ENM in predicting distribution areas insects based on true occurrence Hyphantria cunea China. The results showed that when only limited data were used, two ENMs could not effectively H. , although use global can greatly improve ENMs. When analyzing same data, Biomod2's was significantly better than MaxEnt. For long‐term predictions, area habitat predicted by much greater area; short‐term improved. Under current conditions, China 118 × 10 4 km 2 which 59.32% moderately or highly habitat. Future climate change increase China, all scenarios exceeded 355 accounting 36.98% total land This study demonstrates provides a reference management

Language: Английский

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Potential Global Distribution of Paracoccus marginatus, under Climate Change Conditions, Using MaxEnt

Insects, Journal Year: 2024, Volume and Issue: 15(2), P. 98 - 98

Published: Feb. 1, 2024

The papaya mealybug, Paracoccus marginatus, is an invasive pest species found all over the world. It native to Mexico and Central America, but now present in more than 50 countries regions, seriously threatening economic viability of agricultural forestry industry. In current study, global potential distribution P. marginatus was predicted under future climatic conditions using MaxEnt. results model assessment indicated that area curve receiver operating characteristic ( ROC-AUC) 0.949, while TSS value 0.820. also showed three variables with greatest impact on were min temperature coldest month (bio6), precipitation wettest (bio13), quarter (bio19), corresponding contributions 46.8%, 31.1%, 13.1%, respectively. highly suitable areas mainly located tropical subtropical including South southern North Africa, Australia, Indian subcontinent, Southeast Asia. Under four climate scenarios 2050s 2070s, suitability will change very little. Moreover, 2070s increased compared climate. contrast, habitat increases from SSP370 SSP585 scenarios. study could provide a reference framework for control management mealybug other species.

Language: Английский

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Which SDM Model, CLIMEX vs. MaxEnt, Best Forecasts Aeolesthes sarta Distribution at a Global Scale under Climate Change Scenarios?

Insects, Journal Year: 2024, Volume and Issue: 15(5), P. 324 - 324

Published: May 1, 2024

A precise evaluation of the risk establishing insect pests is essential for national plant protection organizations. This accuracy crucial in negotiating international trade agreements forestry-related commodities, which have potential to carry and lead unintended introductions importing countries. In our study, we employed both mechanistic correlative niche models assess map global patterns establishment

Language: Английский

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Genetic insights into the first detection of Paracoccus marginatus (Hemiptera: Pseudococcidae) in Australia

Journal of Insect Science, Journal Year: 2025, Volume and Issue: 25(1)

Published: Jan. 1, 2025

Abstract Species spread in a new environment is often associated with founders’ effect, and reduced effective population size genetic diversity. However, diversity does not necessarily translate to low establishment potential. Paracoccus marginatus Williams Granara de Willink polyphagous pest that has invaded 4 continents around 34 years. It was first detected the Northern Territory, Australia July 2023. Following this, we collected 45 specimens from 20 suburbs across 3 regions. Using mitochondrial cytochrome oxidase I nuclear ribosomal RNA genes (18S 28S), examined molecular diagnostics robustness, diversity, haplotype network, demographics (Tajima D) of recently Australian population. We compared our samples publicly available sequences deposited on GenBank. All were suitable for diagnosis 100% identity score. For all genes, found nucleotide negative Tajima D newly P. population, suggesting recent single founder event by few individuals. Comparing study’s global showed Tajima’s D, despite at successfully South America, Africa, Asia, Oceania. Our study highlights role demographic life history traits species’ invasion success. provide baseline dataset detection Australia. Further analysis can insights into invasive adaptation novel environment.

Language: Английский

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Sex Pheromone of the Papaya Mealybug

Journal of Chemical Ecology, Journal Year: 2025, Volume and Issue: 51(1)

Published: Feb. 1, 2025

Sex pheromones of mealybugs are reported from more than 20 species and have generally been shown to be monoterpene alcohols esterified with short-chain carboxylic acids. Here, however, we discovered isolated an alcohol without acid moiety as a pheromone compound released adult females the papaya mealybug, Paracoccus marginatus. By means gas chromatography – mass spectrometry nuclear magnetic resonance spectroscopy analyses, structure was identified trans-2-(2-isopropenyl-1-methylcyclobutyl)ethanol, unique cyclobutene skeleton, commonly known fragranol. We then completely separated synthetic (±)-fragranol into each enantiomer by preparative high-performance liquid using chiral resolution column, (−)-(1S,2S)-fragranol definitely confirmed natural attract many males in field when used trap lure. (±)-Fragranol showed attractiveness comparable that pure (−)-(1S,2S)-enantiomer. This study provides not only useful information for monitoring management P. marginatus but also interesting exception underlining great diversity mealybug structures.

Language: Английский

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Resource limitation determines realized thermal performance of consumers in trophodynamic models

Ecology Letters, Journal Year: 2022, Volume and Issue: 25(10), P. 2142 - 2155

Published: Aug. 27, 2022

Recent work has demonstrated that changes in resource availability can alter a consumer's thermal performance curve (TPC). When resources decline, the optimal temperature and breadth of also leading to greater risk warming than predicted by static TPCs. We investigate effect on coupled consumer-resource dynamics, focusing potential for consumer TPC extinction risk. Coupling dynamics generally reduces decline exacerbate effects via due reduction top-down control when consumers near limits their curve. However, if are more sensitive warming, TPCs be reshaped declining resources, increased Our elucidates role bottom-up regulation determining extent which density

Language: Английский

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Smallholder farmers’ knowledge, attitudes and practices towards biological control of papaya mealybug in Kenya

CABI Agriculture and Bioscience, Journal Year: 2023, Volume and Issue: 4(1)

Published: June 15, 2023

Abstract Background Farmer perceptions are highly important in influencing on-farm pest management decision-making. Biological control is extremely sustainable the smallholder production context, but Sub Saharan Africa (SSA) few attempts using this method for arthropod pests have been successful, with one of key reasons cited as poor involvement farming communities and extension dissemination information. Although farmers’ knowledge attitudes hugely successful implementation biological control, they often disregarded. Papaya mealybug ( Paracoccus marginatus ) (PMB) has rapidly spread established suitable areas across Kenya becoming a serious pest. The objective study to determine knowledge, practices towards control; willingness reduce their chemical pesticide use; levels support classical initiative PMB management. Methods Household surveys were conducted covering 383 households (148 women) four papaya producing counties alongside informant interviews eight agents thirty agro-dealers, focus group discussions. Results some farmers demonstrated awareness concept lacked experience technical from or agro-dealers. Reasons not included inadequate concerns over efficacy safety. Farmers expressed high interest willing use help conserve, establishment natural enemies. County, perception safe, training IPM gender all significant factors determining control. Conclusions Previously, attention paid farmer participation which resulted limited success developing countries. With next step engage impacted by PMB. By building capacity, plan that will release agent, Acerophagus papayae , long-term, possible.

Language: Английский

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Distribution and invasion risk assessments of Chrysodeixis includens (Walker, [1858]) (Lepidoptera: Noctuidae) using CLIMEX

International Journal of Biometeorology, Journal Year: 2021, Volume and Issue: 65(7), P. 1137 - 1149

Published: April 12, 2021

Language: Английский

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Pest categorisation of Paracoccus marginatus

EFSA Journal, Journal Year: 2023, Volume and Issue: 21(3)

Published: March 1, 2023

Abstract The EFSA Panel on Plant Health performed a pest categorisation of Paracoccus marginatus (Hemiptera: Sternorrhyncha: Pseudococcidae), the papaya scale, for EU. It is native to Central America and since 1990s, it has spread rapidly in mainly tropical areas Caribbean, islands Indian Pacific Oceans, Africa southern Asia. Large populations were detected northern Israel 2016. not been reported within listed Annex II Commission Implementing Regulation (EU) 2019/2072. reproduces sexually there are up 11 generations per year India. estimated minimum, optimum maximum temperature thresholds adult females 13.9, 28.4 32.1°C, respectively. First-instar nymphs may move neighbouring plants by crawling, or be passively dispersed wind, hitchhiking clothing, equipment animals. highly polyphagous, feeding 172 genera 54 families. an important custard apple (Annona spp.), (Carica papaya) Hibiscus spp. also feeds wide range cultivated EU such as eggplant (Solanum melongena), avocado (Persea americana), citrus (Citrus cotton (Gossypium hirsutum), grapevine (Vitis vinifera), guava (Psidium guajava), mango (Mangifera indica), passionfruit (Passiflora edulis), pomegranate (Punica granatum), pepper (Capsicum annuum) tomato lycopersicum). Plants planting, fruits, vegetables cut flowers main potential pathways entry P. into Climatic conditions warmest Cyprus, Greece, Italy Spain, where host occur, would likely allow this species successfully establish spread. Reductions yield quality some hosts including Annona spp., anticipated if establishment occurs. Phytosanitary measures available reduce likelihood meets criteria that remit assess regarded Union quarantine pest.

Language: Английский

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