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63 results for “Harmonia axyridis”
Fig. 2 in Expansion of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) to European part of Russia in 2018 - 2020
Fig. 2. The main color morphs: À – f. succinea (Saransk); B – f. conspicua (Saransk); C – f. succinea (Baikovo); D – f. succinea (Baikovo); E – f. spectabilis (Yalga); F – f. succinea (Yalga).
Figure 1 in First record of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) from Montenegro
Figure 1. Left: The locality where Harmonia axyridis has been found in Montenegro: Ravnjak, Mojkovac Municipality. Right: Harmonia axyridis specimen observed in Ravnjak, Mojkovac Municipality. Photos: Aleksandra Gligorović
Fig. 2. Linear regression models showing the relationship between Aphis citricola and Harmonia axyridis abundance. A in Behavioral responses of Aphis citricola (Hemiptera: Aphididae) and its natural enemy Harmonia axyridis (Coleoptera: Coccinellidae) to non-host plant volatiles
Fig. 2. Linear regression models showing the relationship between Aphis citricola and Harmonia axyridis abundance. A: Catnip (Nepeta cataria) + French marigold (Tagetes patula), B: ageratum (Ageratum houstonianum) + French marigold, C: catnip + ageratum, and D: native vegetation.
Fig. 6 in Behavioral responses of Aphis citricola (Hemiptera: Aphididae) and its natural enemy Harmonia axyridis (Coleoptera: Coccinellidae) to non-host plant volatiles
Fig. 6. Typical chromatograms obtained from headspace collections of volatiles from French marigold (Tagetes patula) (B) and catnip (Nepeta cataria) (C). A, air control.
Fig. 9 in Behavioral responses of Aphis citricola (Hemiptera: Aphididae) and its natural enemy Harmonia axyridis (Coleoptera: Coccinellidae) to non-host plant volatiles
Fig. 9. An Aphis citricola infestation model showing the effects of aromatic plant volatiles. Solid arrows refer to positive effects. Dotted lines refer to negative effect. The thickness of the arrows indicates the magnitude of the effects. The model includes data from this study and the studies by Song et al. (2013) and Chen et al (2014).
Fig. 8 in Behavioral responses of Aphis citricola (Hemiptera: Aphididae) and its natural enemy Harmonia axyridis (Coleoptera: Coccinellidae) to non-host plant volatiles
Fig. 8. Response of Harmonia axyridis adults to 12.5 μL/L, 25 μL/L, and 50 μL/L 1:1 mixed D-limonene and terpinolene afer 60 min. A: No aphids; B: aphids present. The numbers of asterisks represent the level of significance: ** highly significant (P <0.01); * significant (P <0.05); n.s. no significant difference.
Fig. 5 in Behavioral responses of Aphis citricola (Hemiptera: Aphididae) and its natural enemy Harmonia axyridis (Coleoptera: Coccinellidae) to non-host plant volatiles
Fig. 5. Differences in the number of Harmonia axyridis adults responding to French marigold (Tagetes patula) (A) and catbip (Nepeta cataria) (B) afer 60 min. T: Apple trees + aromatic plants; CK: apple trees. Aphids removed: aphids introduced for 2 h and then removed. The numbers of asterisks represent the level of significance: * significant (P <0.05); n.s. no significant difference.
Fig. 7 in Behavioral responses of Aphis citricola (Hemiptera: Aphididae) and its natural enemy Harmonia axyridis (Coleoptera: Coccinellidae) to non-host plant volatiles
Fig. 7. Differences in the number Harmonia axyridis adults in response to 12.5 μL/L, 25 μL/L, and 50 μL/L D-limonene (A, B) and terpinolene (C, D) afer 60 min. A, C: No aphids;B, D: aphids present.The numbers of asterisks represent the level of significance:** highly significant (P <0.01);* significant (P <0.05);n.s. no significant difference.
Fig. 3 in Behavioral responses of Aphis citricola (Hemiptera: Aphididae) and its natural enemy Harmonia axyridis (Coleoptera: Coccinellidae) to non-host plant volatiles
Fig. 3. Linear regression models showing the relationship in the ratio of Harmonia axyridis abundance to Aphis citricola abundance with sampling years. A: Catnip (Nepeta cataria) + French marigold (Tagetes patula), B: ageratum (Ageratum houstonianum) + French marigold, C: catnip + ageratum, and D: native vegetation.
Fig. 2 in Effect of different diets on biology, reproductive variables and life and fertility tables of Harmonia axyridis (Pallas) (Coleoptera, Coccinellidae)
Fig. 2. Survival probability (lx), expressed in percentage, and specific fertility (mx) expressed as average number of eggs per day of Harmonia axyridis (Pallas, 1773) fed on Brevicoryne brassicae Linnaeus, 1758. Temperature 25 ± 1 ◦C, 70 ± 10% RU and humidity and 12:12 h L:D.
Fig. 1 in Effect of different diets on biology, reproductive variables and life and fertility tables of Harmonia axyridis (Pallas) (Coleoptera, Coccinellidae)
Fig. 1. Survival probability (lx), expressed in percentage, and specific fertility (mx) expressed as average number of eggs per day of Harmonia axyridis (Pallas, 1773) fed on Cinara atlantica (Wilson, 1919). Temperature 25 ± 1 ◦C, 70 ± 10% RU and humidity and 12:12 h L:D.
Fig. 3 in Effect of different diets on biology, reproductive variables and life and fertility tables of Harmonia axyridis (Pallas) (Coleoptera, Coccinellidae)
Fig. 3. Survival probability (lx), expressed in percentage, and specific fertility (mx) expressed as average number of eggs per day of Harmonia axyridis (Pallas, 1773) fed on Anagasta kuehniella (Zeller, 1879). Temperature 25 ± 1 ◦C, 70 ± 10% RU and humidity and 12:12 h L:D.
Figure 1 in Insectum non grata: the harlequin ladybird, Harmonia axyridis (Pallas, 1773) (Coleoptera, Coccinellidae) in Turkey
Figure 1. New and published records of Harmonia axyridis from Turkey and neighboring countries. The number of localities on the map explains in the text.
Figure 5 in Insectum non grata: the harlequin ladybird, Harmonia axyridis (Pallas, 1773) (Coleoptera, Coccinellidae) in Turkey
Figure 5. Seasonality of Harmonia axyridis in Turkey according to new records (93 records from 62 localities). 60 54
Figure 3 in Insectum non grata: the harlequin ladybird, Harmonia axyridis (Pallas, 1773) (Coleoptera, Coccinellidae) in Turkey
Figure 3. Distribution of all models, nonstatistically significant models, and selected models in terms of the user's predefined criteria. Table 1. Performance statistics for the best models selected on the user's predefined criteria.
Figure 1 in Leptoglossus occidentalis (Heteroptera: Coreidae) and Harmonia axyridis (Coleoptera: Coccinellidae), two new invasive alien species for insect fauna of Macedonia
Figure 1. The finding sites of Leptoglossus occidentalis Heidemann (triangle) and Harmonia axyridis (Pallas) (point) in Macedonia.
Figure 2 in Leptoglossus occidentalis (Heteroptera: Coreidae) and Harmonia axyridis (Coleoptera: Coccinellidae), two new invasive alien species for insect fauna of Macedonia
Figure 2. The western conifer seed bug, Leptoglossus occidentalis Heidemann found on Pinus nigra at Prilep Lake.
Figure 1 in Asymmetric intraguild predation of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) on a native Coccinellidae guild
Figure 1 Egg predation response ratio (mean ± se) estimates of 4th instar larvae (L4) and adults showing the predation rates difference between groups with and without an extra food source. Values below one mean that predation rates are higher when an extra food source is absent.
Responses of avian predators to polymorphic harlequin ladybird (Harmonia axyridis)
<p><span>Harlequin ladybird (<em>Harmonia axyridis</em>) shows high level of colour polymorphism. Particular forms differ in their colour combination, pattern and abundance.</span></p> <p><span>We tested the willingness of native, wild-caught passerines to attack and eat particular forms. We predicted that those forms that are more abundant in the wild are better protected, as they are more familiar to the predators. We compared the forms <em>novemdecimsignata</em> and <em>spectabilis</em>, which represent 97 % of individuals in the wild population, but importantly differ in their visual appearance (mostly orange vs. mostly black). Further, we examined three intermediate forms: <em>axyridis</em>, which is very scarce in the wild, and two forms not occurring in the wild – originating from laboratory breedings: <em>suturalis</em> and <em>aninkae</em>. As predators, we used great tit (<em>Parus major</em>), which is very aversive towards ladybirds, and tree sparrow (<em>Passer montanus</em>), which is quite willing to attack and even eat ladybirds. We compared their responses to particular ladybird forms, with artificially brown-painted ladybird to test for the effect of visual signal.</span></p> <p><span>We showed that both bird species attacked all forms of ladybird equally and usually very scarcely. The brown-painted <em>novemdecimsignata</em> form was attacked more often, showing that the visual appearance prevents birds from attacking any conspicuous colour combination. Sparrows tended to eat the attacked ladybirds of forms <em>novemdecimsignata</em>,<em> spectabilis </em>and brown painted. Scarce <em>axyridis</em> form and laboratory forms were very well protected from the attack, very likely due to neophobia.</span></p>
Fig. 4 in Multicoloured Asian lady beetle (Harmonia axyridis (Pallas, 1773)) (Coleoptera: Coccinellidae) for the first time in the fauna of Latvia
Fig. 4. Imago of Harmonia axyridis (Pall.)
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