The invasive mosquito Aedes japonicus japonicus is spreading in northeastern Italy

Montarsi, Fabrizio; Martini, Simone; Michelutti, Alice; Rold, Graziana Da; Mazzucato, Matteo; Qualizza, Davide; Gennaro, D. Di; Fant, Marcella Di; Pont, Marco Dal; Palei, Manlio; Capelli, Gioia

doi:10.1186/s13071-019-3387-x

Cited by 36 publications

(29 citation statements)

References 36 publications

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“…High mean temperature of the warmest quarter is supposed to be a limiting factor, probably shaping the southernmost distribution limits of this species in Europe, where at the same time, higher abundances of the thermophilic competitor species Ae. albopictus are known . Although temperature is considered the key factor for determining the potential range of Ae.…”

Section: Methodsmentioning

confidence: 99%

“…albopictus are known. 29 Although temperature is considered the key factor for determining the potential range of Ae. j. japonicus, precipitation variables made a high contribution to habitat suitability models for Ae.…”

Section: Climatic Conditionsmentioning

confidence: 99%

“…j. japonicus was the third non-native mosquito species recorded, 23 and since its first detection in the early 2000s, the species has been observed to expand its range and new records are reported continuously. [24][25][26][27][28][29][30][31][32] A niche unfilling within the new ranges in Europe and North America is very likely for Ae. j. japonicus due to the short time since its first detection on both continents.…”

Section: Introductionmentioning

confidence: 99%

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Global occurrence data improve potential distribution models for Aedes japonicus japonicus in non‐native regions

Cunze

Kochmann

Klimpel

2020

Pest Management Science

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BACKGROUND There is great interest in modelling the distribution of invasive species, particularly from the point of view of management. However, distribution modelling for invasive species using ecological niche models (ENMs) involves multiple challenges. Owing to the short time span since the introduction or arrival of a non‐indigenous species and the associated dispersal limitations, applying regular ENMs at an early stage of the invasion process may result in an underestimation of the potential niche in the new ranges. This topic is dealt with here using the example of Aedes japonicus japonicus, a vector competent mosquito species for a number of diseases. RESULTS We found high niche unfilling for the species' non‐native range niches in Europe and North America compared with the native range niche, which can be explained by the early stage of the invasion process. Comparing four different ENMs based on: (i) the European and (ii) the North American non‐native range occurrence data, (iii) (derived) native range occurrence data, and (iv) all available occurrence data together, we found large differences in the projected climatic suitability, with the global data model projecting larger areas with climatic suitability. CONCLUSION ENM in biological invasions can be challenging, especially when distribution data are only poorly available. We suggest one possible way to project climatic suitability for Aedes j. japonicus despite poor data availability for the non‐native ranges and missing occurrences from the native range. We discuss aspects of the lack of information and the associated implications for modelling. © 2020 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Section: Methodsmentioning

confidence: 99%

Section: Climatic Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Global occurrence data improve potential distribution models for Aedes japonicus japonicus in non‐native regions

Cunze

Kochmann

Klimpel

2020

Pest Management Science

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“…albopictus. These species have a habitat preference for small man-made containers that are naturally prey-limited [12,[56][57][58], and this preference has been a driving feature of their expansion through urban areas [59,60].…”

Section: Introductionmentioning

confidence: 99%

Biological control of Aedes mosquito larvae with carnivorous aquatic plant, Utricularia macrorhiza

et al. 2020

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Background: Biological controls with predators of larval mosquito vectors have historically focused almost exclusively on insectivorous animals, with few studies examining predatory plants as potential larvacidal agents. In this study, we experimentally evaluate a generalist plant predator of North America, Utricularia macrorhiza, the common bladderwort, and evaluate its larvacidal efficiency for the mosquito vectors Aedes aegypti and Aedes albopictus in no-choice, laboratory experiments. We sought to determine first, whether U. macrorhiza is a competent predator of container-breeding mosquitoes, and secondly, its predation efficiency for early and late instar larvae of each mosquito species. Methods: Newly hatched, first-instar Ae. albopictus and Ae. aegypti larvae were separately exposed in cohorts of 10 to field-collected U. macrorhiza cuttings. Data on development time and larval survival were collected on a daily basis to ascertain the effectiveness of U. macrorhiza as a larval predator. Survival models were used to assess differences in larval survival between cohorts that were exposed to U. macrorhiza and those that were not. A permutation analysis was used to investigate whether storing U. macrorhiza in laboratory conditions for extended periods of time (1 month vs 6 months) affected its predation efficiency. Results: Our results indicated a 100% and 95% reduction of survival of Ae. aegypti and Ae. albopictus larvae, respectively, in the presence of U. macrorhiza relative to controls within five days, with peak larvacidal efficiency in plant cuttings from ponds collected in August. Utricularia macrorhiza cuttings, which were prey-deprived, and maintained in laboratory conditions for 6 months were more effective larval predators than cuttings, which were maintained prey-free for 1 month. Conclusions: Due to the combination of high predation efficiency and the unique biological feature of facultative predation, we suggest that U. macrorhiza warrants further development as a method for larval mosquito control.

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“…atropalpus were reported as highly invasive species in Europe and are competent vectors for numerous human and animal pathogens [8]. These aedine species invaded several European countries like Switzerland [9], Germany [10], Austria [2], France [11] and Italy [12]. The establishment of these Aedes species in Europe participated to the emergence of autochthonous human cases of dengue and chikungunya [13,14].…”

Section: Introductionmentioning

confidence: 99%

Identification of Aedes mosquitoes by MALDI-TOF MS biotyping using protein signatures from larval and pupal exuviae

Nebbak

Alméras

2020

Parasites Vectors

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Background: Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) biotyping is an innovative strategy, applied successfully for the identification of numerous arthropod families including mosquitoes. The effective mosquito identification using this emerging tool was demonstrated possible at different steps of their life-cycle, including eggs, immature and adult stages. Unfortunately, for species identification by MS, the euthanasia of the mosquito specimen is required. Methods:To avoid mosquito euthanasia, the present study assessed whether aedine mosquitoes could be identified by MALDI-TOF MS biotyping, using their respective exuviae. In this way, exuviae from the fourth-instar and pupal stages of Aedes albopictus and Aedes aegypti were submitted to MALDI-TOF MS analysis.Results: Reproducible and specific MS spectra according to aedine species and stage of exuviae were observed which were objectified by cluster analyses, composite correlation index (CCI) tool and principal components analysis (PCA). The query of our reference MS spectra database (DB) upgraded with MS spectra of exuviae from fourth-instar larvae and pupae of both Aedes species revealed that 100% of the samples were correctly classified at the species and stage levels. Among them, 93.8% (135/144) of the MS profiles reached the threshold log score value (LSV > 1.8) for reliable identification. Conclusions:The extension of reference MS spectra DB to exuviae from fourth-instar and pupal stages made now possible the identification of mosquitoes throughout their life-cycle at aquatic and aerial stages. The exuviae presenting the advantage to avoid specimen euthanasia, allowing to perform complementary analysis on alive mosquitoes.

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The invasive mosquito Aedes japonicus japonicus is spreading in northeastern Italy

Cited by 36 publications

References 36 publications

Global occurrence data improve potential distribution models for Aedes japonicus japonicus in non‐native regions

Global occurrence data improve potential distribution models for Aedes japonicus japonicus in non‐native regions

Biological control of Aedes mosquito larvae with carnivorous aquatic plant, Utricularia macrorhiza

Identification of Aedes mosquitoes by MALDI-TOF MS biotyping using protein signatures from larval and pupal exuviae

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