scholarly journals Interactions of ants with native and invasive lady beetles and the role of chemical cues in intraguild interference

Chemoecology ◽  
2021 ◽  
Author(s):  
Roman Bucher ◽  
Laura M. Japke ◽  
Ayse Gül Ünlü ◽  
Florian Menzel
Keyword(s):  
Chemical Cues ◽  
Harmonia Axyridis ◽  
Species Recognition ◽  
Lady Beetle ◽  
Lasius Niger ◽  
Beetle Species ◽  
Beetle Elytra ◽  
Lady Beetles ◽  
Ant Aggression

AbstractThe predator-predator naïveté hypothesis suggests that non-native predators benefit from being unknown to native predators, resulting in reduced intraguild interference with native predators. This novelty advantage should depend on the ability of native predators to recognize cues of non-native predators. Here, we compared ant aggression and lady beetle reaction in four native and the invasive lady beetle species Harmonia axyridis. In addition, we tested whether lady beetle cuticular hydrocarbons (CHCs) are involved in species recognition, which might explain naïveté if the invasive species has a specific CHC profile. To this end, we conducted behavioral assays confronting two native ant species with both living lady beetles and lady beetle elytra bearing or lacking CHCs of different lady beetle species. Finally, we characterized CHC profiles of the lady beetles using GC–MS. In general, the aggression of Lasius niger was more frequent than that of Myrmica rubra and L. niger aggression was more frequent towards most native lady beetle species compared to H. axyridis. The removal of CHCs from lady beetle elytra reduced aggression of both ant species. If CHCs of respective lady beetle species were added on cue-free elytra, natural strength of L. niger aggression could be restored. CHC analyses revealed a distinct cue composition for each lady beetle species. Our experiments demonstrate that the presence of chemical cues on the surface of lady beetles contribute to the strength of ant aggression against lady beetles. Reduced aggression of L. niger towards H. axyridis and reduced avoidance behavior in H. axyridis compared to the equally voracious C. septempunctata might improve the invasive lady beetle’s access to ant-tended aphids.

scholarly journals Competition for Aphid Prey between Different Lady Beetle Species in a Laboratory Arena

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Christy Leppanen ◽  
Andrei Alyokhin ◽  
Serena Gross
Keyword(s):  
Native Species ◽  
Harmonia Axyridis ◽  
Coccinella Septempunctata ◽  
Lady Beetle ◽  
Macrosiphum Euphorbiae ◽  
Beetle Species ◽  
Lady Beetles ◽  
Aphid Prey ◽  
Aphid Consumption ◽  
Asymmetric Interactions

Direct competition for aphid prey (Hemiptera: Aphididae) was evaluated between and among several lady beetle species (Coleoptera: Coccinellidae). The behavior of three native (Coccinella trifasciata, Coleomegilla maculata,andHippodamia convergens) and four nonnative (Coccinella septempunctata,Harmonia axyridis,Hippodamia variegata,andPropylea quatuordecimpunctata) lady beetles was observed in laboratory arenas. The beetles were kept alone, paired with conspecifics or paired with heterospecifics, and presented with potato aphids (Macrosiphum euphorbiae).Harmonia axyridiswas the most successful aphid predator in our study, being able to find aphids more quickly and consume more of them compared to most other lady beetle species. It was also by far the most aggressive of the tested species.Coccinella septempunctata, C. trifasciata,andC. maculatagenerally followedH. axyridisin aphid consumption. Prey discovery, consumption, and aggressive behaviors were dependent on which species were present in the arena. Except for the generally superiorH. axyridis, there was no obvious dominance hierarchy among the other tested species and no dichotomy between the native and non-native species. Asymmetric interactions between lady beetle species may affect their abilities to coexist in the same habitat.

scholarly journals Limited Transmission of the Ectoparasitic FungusHesperomyces virescensbetween Lady Beetles

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Ted E. Cottrell ◽  
Eric W. Riddick
Keyword(s):  
Harmonia Axyridis ◽  
Horizontal Transmission ◽  
Coccinella Septempunctata ◽  
Lady Beetle ◽  
Coleomegilla Maculata ◽  
Beetle Species ◽  
Target Species ◽  
Lady Beetles ◽  
Aphidophagous Lady Beetles ◽  
Bodily Contact

The ectoparasitic fungusHesperomyces virescensThaxter (Ascomycota: Laboulbeniales) commonly infects the invasive lady beetleHarmonia axyridis(Pallas) and several other aphidophagous lady beetles in North America and Europe. We tested the hypothesis that bodily contact between adults of different lady beetle species supports horizontal transmission ofH. virescens. We used laboratory assays to determine whetherH. axyridisorOlla v-nigrum(Mulsant) harboringH. virescens(i.e., source beetles) transmit the fungus to noninfected target beetlesH. axyridis,O. v-nigrum,Coccinella septempunctataL.,Coleomegilla maculata(De Geer), orHippodamia convergensGuerin-Meneville. Results indicate that intraspecific transmission (i.e., for the source beetlesH. axyridisandO. v-nigrum) was common but interspecific transmission (i.e., from sourceH. axyridisorO. v-nigrumto target species) was low. Interspecific transmission occurred at low rates fromH. axyridisto bothC. septempunctataandO. v-nigrumand fromO. v-nigrumto bothC. septempunctataandH. convergens. Based upon our laboratory assays of forced pairings/groupings of source and target beetles, we predict that horizontal transmission ofH. virescensbetween species of aphidophagous coccinellids is possible but likely rare.

scholarly journals Review of lady beetles in the Cycloneda germainii species complex (Coleoptera; Coccinellidae: Coccinellinae: Coccinellini) with descriptions of new and unusual species from Chile and surrounding countries

Zootaxa ◽  
2006 ◽  
Vol 1311 (1) ◽  
pp. 13 ◽  
Author(s):  
GUILLERMO GONZÁLEZ ◽  
NATALIA J. VANDENBERG
Keyword(s):  
New Species ◽  
Species Complex ◽  
Lady Beetle ◽  
Valid Species ◽  
Beetle Species ◽  
Lady Beetles ◽  
Three New Species

A complex of lady beetle species including Cycloneda germainii (Crotch) is reviewed and seven valid species recognized, including C. germainii, C. eryngii (Mulsant), C. sicardi (Brèthes), C. boliviana (Mulsant), and three new species, C. lacrimosa González & Vandenberg, n. sp., C. disconsolata Vandenberg & González, n. sp., and C. patagonica González & Vandenberg, n. sp.

Fly Catcher Effect in Harmonia axyridis (Pallas)? No Attraction to Lady Beetle Images on Flight Traps

2007 ◽  
Vol 42 (4) ◽  
pp. 496-500 ◽  
Author(s):  
Christine A. Nalepa
Keyword(s):  
Harmonia Axyridis ◽  
Field Tests ◽  
Lady Beetle ◽  
Migratory Flight ◽  
Significant Difference ◽  
Lady Beetles ◽  
Harmonia Axyridis Pallas

Field tests were conducted to determine if, at the conclusion of their autumn migratory flight, Harmonia axyridis (Pallas) are attracted to and preferentially alight on targets covered with the printed images of lady beetles. There was no significant difference in the number of beetles that landed on targets bearing depictions of coccinellids compared with the number that landed on blank, white controls. Results suggest that commercial traps that rely on images of lady beetles to attract incoming coccinellids are of little practical value.

scholarly journals Compatibility of selected biorational pesticides with the predatory arthropods in brinjal ecosystem

2017 ◽  
Vol 15 (2) ◽  
Author(s):  
T Islam ◽  
G Das
Keyword(s):  
Harmonia Axyridis ◽  
Wolf Spider ◽  
Lady Beetle ◽  
Wolf Spiders ◽  
Asian Lady Beetle ◽  
Lady Beetles ◽  
Mortality Percentage ◽  
Harmonia Axyridis Pallas ◽  
Predatory Arthropods ◽  
Significant Mortality

Susceptibility of three predatory arthropods namely Asian lady beetle, Harmonia axyridis (Pallas), lynx spider, Lycosa pseudoannulata (Boescriberg and Strand), and wolf spider, Oxyopes javanus (Thorell) to four commonly used biorational molecules viz. buprofezin, spinosad, emamectin benzoate and abamectin were determined in a brinjal ecosystem. Biorational pesticides were applied singly and in some selected combinations and their toxicity on the predators was recorded up to three sprayings in a confined habitat. Buprofezin caused no significant mortality of predators (2.87%, 0.32%, 0.96% mean mortality per spray of Asian lady beetle, lynx spider, and wolf spider respectively) and was found most compatible among the biorational molecules. However, other three tested molecules were found highly toxic for all predatory natural enemies when applied singly or in combination with buprofezin. Spinosad was most toxic for Asian lady beetles (21.84% mean mortality per spray) and lynx spiders (15.32 % mean mortality per spray) whereas abamectin (17.78% mean mortality per spray) for wolf spiders. It was observed that the number of spraying was very crucial and had a proportionate relationship with the mortality percentage of predators. Based on this study it is suggested that buprofezin could be considered to incorporate safely in the IPM program for brinjal pest management.J. Bangladesh Agril. Univ. 15(2): 234-238, December 2017

scholarly journals Evaluation of compounds for repellency of the multicoloured Asian lady beetle (Coleoptera: Coccinellidae) in vineyards

2021 ◽  
pp. 1-12
Author(s):  
Erik Glemser ◽  
Wendy McFadden-Smith ◽  
Jean-Philippe Parent
Keyword(s):  
Harmonia Axyridis ◽  
Field Trials ◽  
Lady Beetle ◽  
Short Term ◽  
Wine Quality ◽  
Testing Period ◽  
Pine Oil ◽  
Asian Lady Beetle ◽  
Lady Beetles ◽  
Reduce Risk

Abstract The multicoloured Asian lady beetle, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae), has become a pest in North American vineyards during harvest due to its adverse effects on wine quality. This study evaluated alternative products that may be suitable for use in vineyards as repellents to the beetle. Products were screened as repellent for multicoloured Asian lady beetle in short-term laboratory trials. Thirteen products significantly reduced the number of beetles on grapes, Vitis vinifera (Vitaceae). Products that showed a 50% or greater repellency were evaluated for residual repellency 24, 48, and 72 hours after application. In these trials, pine oil was highly repellent at each testing period, whereas the repellency of most other products decreased over time. Eight repellent compounds were evaluated in field trials in commercial vineyards that had high multicoloured Asian lady beetle populations. The number of beetles on vines was counted 2–6 and 24–28 hours after application. In the field, the most effective repellents overall were Biobenton and Buran, which reduced the number of multicoloured Asian lady beetles by 39 and 34%, respectively. The discovery of new repellents of multicoloured Asian lady beetle provides an opportunity to improve management of the pest in vineyards and to reduce risk of wine taint without using broad-spectrum insecticides.

Assemblage structure and altitudinal distribution of lady beetles (Coleoptera, Coccinellidae) in the mountain spruce forests of Pol’ana Mountains, the West Carpathians

Biologia ◽  
2007 ◽  
Vol 62 (5) ◽  
Author(s):  
Diana Selyemová ◽  
Peter Zach ◽  
Danka Némethová ◽  
Ján Kulfan ◽  
Miroslav Úradník ◽  
...  
Keyword(s):  
Altitudinal Gradient ◽  
Coccinella Septempunctata ◽  
Lady Beetle ◽  
Beetle Species ◽  
Altitudinal Distribution ◽  
The West ◽  
Lower Altitude ◽  
Spruce Forests ◽  
Lady Beetles ◽  
West Carpathians

AbstractIn two successive years we recorded a total of 3,636 individuals and 17 species of adult lady beetles (Coleoptera, Coccinellidae) in the spruce forests of Pol’ana Mts (the West Carpathians) at altitudes ranging from 600 m to 1,300 m a.s.l. Four lady beetle species were documented as predominating (dominance of abundance > 5%) over the study period. They were the following: Aphidecta obliterata (1,828 individuals and 50.3%), Coccinella septempunctata (634 individuals and 17.4%), Adalia conglomerata (594 individuals and 16.3%) and Anatis ocellata (279 individuals and 7.7%). The assemblages of lady beetles differed among the areas and also between the years. The season revealed neglegible effect on distribution of lady beetles, whereas the effect of altitude was more pronounced. A. conglomerata preferred the areas at lower altitude (600–725 m) to those at middle (900–925 m) and/or upper altitude (1,250–1,300 m). In contrast, A. obliterata and C. septempuctata were most abundant in the area at middle altitude. The altitudinal location of area partly explained the variability in abundance of lady beetles. The first ordination axis constructed by means of correspondence analysis (CA) represented an altitudinal gradient and accounted for 19.4% of the total variance of the species data. The great proportion of lady beetle species not typically associated with spruce and/or other coniferous trees than spruce (70.6%, n = 17) may be explained by an ecotonal effect.

The Multicolored Asian Lady Beetle (Coleoptera: Coccinellidae): Orientation to Aggregation Sites

2000 ◽  
Vol 35 (2) ◽  
pp. 150-157 ◽  
Author(s):  
C. A. Nalepa ◽  
K. A. Kidd ◽  
D. I. Hopkins
Keyword(s):  
Chemical Cues ◽  
Harmonia Axyridis ◽  
Lady Beetle ◽  
Aggregation Pheromones ◽  
Mail Order ◽  
Contact Chemoreception ◽  
Asian Lady Beetle ◽  
Multicolored Asian Lady Beetle ◽  
Harmonia Axyridis Pallas ◽  
Over Time

Several studies were conducted to determine the cues used by the lady beetle Harmonia axyridis (Pallas) when orienting to aggregation sites in autumn: (1) artificial shelters modeled after those commercially available in mail order catalogues were baited with live adults and hung on the outside of buildings known from past years to be aggregation sites, (2) differential arrival of the two sexes at overwintering sites was examined by collecting and sexing the beetles alighting on buildings at two points in time during the aggregation period, and (3) the distribution of overwintering H. axyridis among beehives was determined in ten apiaries. Results indicate no preference for the artificial shelters and no orientation to the conspecifics within them. Sex ratios of beetles arriving at aggregation sites were consistent over time in two of the three sites examined. During winter, adult H. axyridis were non-randomly distributed among physically similar beehives. We conclude that there is little evidence for volatile aggregation pheromones and suggest that the chemical cues that mediate the final stages of aggregation behavior in H. axyridis may be based on contact chemoreception with conspecifics or the feces and residues that persist in aggregation sites from previous years.

scholarly journals Functional response of Harmonia axyridis preying on Acyrthosiphon pisum nymphs: the effect of temperature

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yasir Islam ◽  
Farhan Mahmood Shah ◽  
Xu Rubing ◽  
Muhammad Razaq ◽  
Miao Yabo ◽  
...  
Keyword(s):  
Functional Response ◽  
High Performance ◽  
Acyrthosiphon Pisum ◽  
Harmonia Axyridis ◽  
Effect Of Temperature ◽  
Functional Responses ◽  
Aphid Control ◽  
Host Aphid ◽  
Predator Foraging

AbstractIn the current study, we investigated the functional response of Harmonia axyridis adults and larvae foraging on Acyrthosiphon pisum nymphs at temperatures between 15 and 35 °C. Logistic regression and Roger’s random predator models were employed to determine the type and parameters of the functional response. Harmonia axyridis larvae and adults exhibited Type II functional responses to A. pisum, and warming increased both the predation activity and host aphid control mortality. Female and 4th instar H. axyridis consumed the most aphids. For fourth instar larvae and female H. axyridis adults, the successful attack rates were 0.23 ± 0.014 h−1 and 0.25 ± 0.015 h−1; the handling times were 0.13 ± 0.005 h and 0.16 ± 0.004 h; and the estimated maximum predation rates were 181.28 ± 14.54 and 153.85 ± 4.06, respectively. These findings accentuate the high performance of 4th instar and female H. axyridis and the role of temperature in their efficiency. Further, we discussed such temperature-driven shifts in predation and prey mortality concerning prey-predator foraging interactions towards biological control.

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