scholarly journals Differences in oviposition initiation and sites of lady beetles, Coccinella septempunctata bruckii MULSANT and Harmonia axyridis (PALLAS) (Coleoptera:Coccinellidae) in the field.

1987 ◽  
Vol 31 (3) ◽  
pp. 253-254 ◽  
Author(s):  
Keiichi TAKAHASHI
Keyword(s):  
Harmonia Axyridis ◽  
Coccinella Septempunctata ◽  
Lady Beetles ◽  
Harmonia Axyridis Pallas

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 First record of Coccinella septempunctata algerica (Coleoptera, Coccinellidae) as host of Dinocampus coccinellae (Hymenoptera, Braconidae, Euphorinae) in Algeria

2021 ◽  
pp. 65-72
Author(s):  
L. Aitaider ◽  
A. Meriem ◽  
S. Doumandji
Keyword(s):  
Harmonia Axyridis ◽  
Coccinella Septempunctata ◽  
First Record ◽  
Dinocampus Coccinellae ◽  
Hippodamia Variegata ◽  
Harmonia Axyridis Pallas

This study was conducted in fields in the Boumerdes region near Algiers, Algeria between April and September 2019. Two species of Coccinellini, Coccinella septempunctata algerica (Kovàr, 1977) and Hippodamia variegata (Goeze, 1777) were recorded as hosts of the parasitoid Dinocampus coccinellae (Schrank, 1802). The percentage of parasitism observed during the sampling was low. Our results suggest that D. coccinellae is not well adapted to Harmonia axyridis (Pallas, 1773). This work shows that the parasitoid has a greater preference for C. septempunctata algerica than for H. variegata (16.7 % versus 2.2 % of parasitism). Given the low percentage of parasitism due to D. coccinellae, it does not seem that this parasitoid is able to reduce the effectiveness of biocontrol by ladybeetles. This is the first published record of Dinocampus coccinellae as a parasitoid of C. septempunctata algerica in Algeria.

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 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 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

Aphid (Homoptera: Aphididae) Management in Alfalfa by Spring Grazing with Cattle

1997 ◽  
Vol 32 (3) ◽  
pp. 332-341 ◽  
Author(s):  
G. D. Buntin ◽  
J. H. Bouton
Keyword(s):  
Acyrthosiphon Pisum ◽  
Harmonia Axyridis ◽  
Coccinella Septempunctata ◽  
Growth Cycle ◽  
Pea Aphid ◽  
Early Application ◽  
Large Plot ◽  
Small Plot ◽  
Harmonia Axyridis Pallas ◽  
Aphid Populations

The effect of continuous, intensive grazing by cattle on aphid populations was examined in the first growth cycle of ‘Alfagraze’ and ‘Apollo’ alfalfa which are tolerant and not tolerant to grazing, respectively. Populations were almost entirely pea aphid, Acyrthosiphon pisum (Harris). The effect of grazing on aphid populations was examined in small plot exclusion studies in 1991 and 1992, and the effects of grazing and use of an early insecticide application with ≤7 day grazing restriction were examined in large plot exclusion trials in 1993 and 1994. Grazing reduced aphid populations by 66% to 90% when numbers exceeded ~1 aphid per stem. Populations were not significantly reduced by grazing when numbers did not exceed 1 per stem. Permethrin reduced aphid numbers for up to 7 wks and was more effective than carbofuran. Effects of grazing were similar regardless of insecticide usage. Coccinellid beetle populations in 1993 and 1994 were composed of Coccinella septempunctata L., Harmonia axyridis (Pallas), and Coleomegilla maculata DeGeer. Coccinellid numbers were much lower in grazed than ungrazed plots when aphid numbers were reduced by grazing in 1993, but were not greatly affected by grazing in 1994 when aphid numbers were low. Coccinellid numbers paralleled trends in aphid numbers. Continuous, intensive grazing or the early application of an insecticide at a low rate followed by grazing were effective approaches for suppressing pea aphid in alfalfa.

scholarly journals Incorporating a Sorghum Habitat for Enhancing Lady Beetles (Coleoptera: Coccinellidae) in Cotton

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
P. G. Tillman ◽  
T. E. Cottrell
Keyword(s):  
Harmonia Axyridis ◽  
Insect Pests ◽  
Coccinella Septempunctata ◽  
Grain Sorghum ◽  
Coleomegilla Maculata ◽  
Hippodamia Convergens ◽  
Trap Crop ◽  
Lady Beetles ◽  
On Farm ◽  
The Impact

Lady beetles (Coleoptera: Coccinellidae) prey on insect pests in cotton. The objective of this 2 yr on-farm study was to document the impact of a grain sorghum trap crop on the density of Coccinellidae on nearby cotton.Scymnusspp.,Coccinella septempunctata(L.),Hippodamia convergensGuérin-Méneville,Harmonia axyridis(Pallas),Coleomegilla maculata(De Geer),Cycloneda munda(Say), andOlla v-nigrum(Mulsant) were found in sorghum over both years. Lady beetle compositions in sorghum and cotton and in yellow pyramidal traps were similar. For both years, density of lady beetles generally was higher on cotton with sorghum than on control cotton. Our results indicate that sorghum was a source of lady beetles in cotton, and thus incorporation of a sorghum habitat in farmscapes with cotton has great potential to enhance biocontrol of insect pests in cotton.

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