scholarly journals Dietary complementation across life stages in the polyphagous lady beetle Coleomegilla maculata

2007 ◽  
Vol 0 (0) ◽  
pp. 071115163010001-??? ◽  
Author(s):  
J.P. Michaud ◽  
J.L. Jyoti
Keyword(s):  
Lady Beetle ◽  
Coleomegilla Maculata ◽  
Life Stages ◽  
Dietary Complementation

scholarly journals Characterizing the adult and larval transcriptome of the multicolored Asian lady beetle,Harmonia axyridis

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2098 ◽  
Author(s):  
Lindsay A. Havens ◽  
Matthew D. MacManes
Keyword(s):  
Harmonia Axyridis ◽  
Color Polymorphism ◽  
Lady Beetle ◽  
Life Stages ◽  
Transcriptome Data ◽  
Evolutionary Processes ◽  
Critical Information ◽  
Asian Lady Beetle ◽  
Multicolored Asian Lady Beetle

The reasons for the evolution and maintenance of striking visual phenotypes are as widespread as the species that display these phenotypes. While study systems such asHeliconiusandDendrobatidaehave been well characterized and provide critical information about the evolution of these traits, a breadth of new study systems, in which the phenotype of interest can be easily manipulated and quantified, are essential for gaining a more general understanding of these specific evolutionary processes. One such model is the multicolored Asian lady beetle,Harmonia axyridis, which displays significant elytral spot and color polymorphism. Using transcriptome data from two life stages, adult and larva, we characterize the transcriptome, thereby laying a foundation for further analysis and identification of the genes responsible for the continual maintenance of spot variation inH. axyridis.

Effect of cotton genotypes on numbers of adult lady beetles (Coleoptera: Coccinellidae)

1987 ◽  
Vol 108 (3) ◽  
pp. 687-689
Author(s):  
H. L. Bhardwaj ◽  
J. B. Weaver
Keyword(s):  
Control Measure ◽  
Heliothis Zea ◽  
Lady Beetle ◽  
Coleomegilla Maculata ◽  
Cotton Pests ◽  
Calcium Arsenate ◽  
Lady Beetles ◽  
Cotton Genotypes ◽  
Small Container ◽  
Cotton Fields

Predatory arthropods can play an important role in the natural control of cotton pests, including bollworms (Heliothis zea Boddie and H. virescens F.). Smith & Fontenot (1942) reported that widespread use of calcium arsenate in cotton fields reduced the number of coccinellids, which resulted in increased damage by pests. Ewing & Ivy (1943) confined several predacious insects collected from cotton (individually in jelly glasses fitted with slightly moistened blotting paper) and supplied them daily with eggs deposited by insectary-reared bollworm moths. The maximum number of eggs destroyed in a day by a single adult of the convergent lady beetle (Hippodama convergent Guerin-Meneville) was 275. Adults of another species of lady beetle (Coleomegilla fuscilabris Muls.) frequently consumed all the eggs given them, an adult on average consuming 22 eggs per day. All the 12 species of predacious insects found in cotton fields survived on bollworm eggs. Whitcomb & Bell (1964) showed that the three most common lady beetles in cotton fields in Arkansas were: (1) spotted lady beetles (Coleomegilla maculata De Geer), (2) convergent lady beetles, and (3) ninespotted lady beetles (Ciccinella novemnotata Herbst). They recorded 24 species of lady beetles, all feeding on lepidopterous eggs including those of bollworms. Many of these predators were captured while feeding on small bollworm larvae. Van den Bosch & Kagen (1966) proposed guidelines for the mass releases of convergent lady beetle adults as a pest control measure in cotton. Lingren, Ridgway & Jones (1968) reported from small-container experiments that adult females of convergent lady beetles consumed an average of 129·9 bollworm eggs per day.

scholarly journals Laboratory Evaluation of the Toxicity of Proteus, Pymetrozine, Deltamethrin, and Pirimicarb on Lady Beetle Hippodamia Variegata (Goeze) (Col.: Coccinellidae)

2013 ◽  
Vol 53 (2) ◽  
pp. 143-147 ◽  
Author(s):  
Ali Almasi ◽  
Qodrat Sabahi ◽  
Khalil Talebi ◽  
Ardavan Mardani
Keyword(s):  
Lady Beetle ◽  
Laboratory Evaluation ◽  
Life Stages ◽  
Randomized Design ◽  
Significant Difference ◽  
Class 1 ◽  
Hippodamia Variegata ◽  
Toxicity Level ◽  
Completely Randomized Design ◽  
Sublethal Concentrations

Abstract The implementation of an Integrated Pest Management (IPM) program requires selecting and using chemicals which are least harmful to natural enemies. In this study, the acute toxicity of the recommended field concentration of four conventional insecticides was evaluated in reference to the different life stages (L3, L4 and adult) of the variegated lady beetle Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae). The evaluated insecticides were Proteus, pymetrozine, deltamethrin, and pirimicarb. A completely randomized design (CRD) with four replications was used as the experimental design. The means were separated by the least significant difference (LSD). The mortalities of those predators treated with the field recommended concentrations of various insecticides, were significantly different. Proteus showed strong toxicity toward the different life stages of the predator. However, pymetrozine and pirimicarb caused less than a 50% mortality. Based on the lethal concentration (LC50) values at 24 h after treatment, the adult predator was the most susceptible to proteus, followed by deltamethrin, pymetrozine, and pirimicarb values of 35.977, 358.757, 915.667, and 2616.113. Based on sublethal concentrations (LC30), these values were 22.718, 261.957, 569.879, and 1521.424. Based on International Organization of Biological Control (IOBC) classification, the insecticides pirimicarb and pymetrozine were both categorized as having a Class 1 toxicity level (harmless), deltamethrin as having a Class 2 level (slightly harmful), and Proteus, a Class 4 toxicity level (harmful).

scholarly journals PERENNIAL LEGUME GROUND COVERS INCREASE BENEFICIAL ARTHROPODS AND SUPPLY NITROGEN IN PECAN ORCHARDS

HortScience ◽  
1994 ◽  
Vol 29 (7) ◽  
pp. 739e-739
Author(s):  
A. Shiferaw ◽  
M.W. Smith ◽  
R.D. Eikenbary ◽  
Don C. Arnold
Keyword(s):  
Trifolium Pratense ◽  
Cynodon Dactylon ◽  
Coccinella Septempunctata ◽  
Red Clover ◽  
Ground Cover ◽  
Lady Beetle ◽  
Bermuda Grass ◽  
Coleomegilla Maculata ◽  
Beneficial Arthropods ◽  
Tree Canopies

Perennial legumes ground covers were evaluated in pecan (Carya illinoinensis) orchards to supply nitrogen and increase beneficial arthropods. Ground covers were `Kenland' red clover (Trifolium pratense), `Louisiana S-1' white clover (Trifolium repens), a mixture of these two legumes, or bermuda grass (Cynodon dactylon), each in 5 ha plots. Nitrogen was applied at 0-200 kg·ha-1 N in 50 kg intervals to bermuda grass plots, and was omitted on the legumes. Aphids feeding on the legumes attracted lady beetles; however, lady beetle populations in the tree canopies were not affected by ground cover treatment. The most abundant lady beetle species in legumes were Coleomegilla maculata lengi (77%) and Coccinella septempunctata (13%); whereas, dominant species in tree canopies were Coleomegilla maculata lengi (33%). Olla v-nigrum (20%). Cycloneda munda (18%) and Coccinella septempunctata (15%). Several other beneficial arthropods were sampled in legumes and tree canopies. Aphid populations feeding on pecans were low (peak population ≈ 2 aphids/leaf), and not affected by ground cover treatment. Legumes supplied the equivalent of applying 68-156 kg·ha-1 N.

scholarly journals A System for Harvesting Eggs from the Pink-Spotted Lady Beetle

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Margaret L. Allen ◽  
Eric W. Riddick
Keyword(s):  
Methyl Salicylate ◽  
Oviposition Behavior ◽  
Lady Beetle ◽  
Coleomegilla Maculata ◽  
Textured Surface ◽  
Destructive Sampling ◽  
Egg Cannibalism ◽  
Synchronous Development ◽  
Predatory Insect ◽  
Chemical Attractant

We describe a system for harvesting eggs from a predatory insect, the pink-spotted lady beetle,Coleomegilla maculataDe Geer (Coleoptera: Coccinellidae). Adult beetles placed in square, transparent containers that included oviposition substrates hanging from the top of the cage deposited eggs on the materials provided. We harvested eggs from these substrates in quantities sufficient for either destructive sampling or synchronous development of larvae. We evaluated effects of crowding inside cages; effects of a chemical attractant on oviposition behavior; egg cannibalism. Females preferred a textured surface rather than a smooth, waxy one for laying eggs. Crowding inhibited oviposition of beetles. Presence of a chemical attractant (methyl salicylate) did not significantly improve oviposition. This paper describes an inexpensive system for harvesting eggs fromC. maculata. Refinement of this system should improve oviposition and reduce cannibalism.

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 Characterizing the Adult and Larval Transcriptome of the Multicolored Asian Lady Beetle, Harmonia axyridis

2015 ◽  
Author(s):  
Lindsay A Havens ◽  
Matthew D MacManes
Keyword(s):  
Harmonia Axyridis ◽  
Color Polymorphism ◽  
Lady Beetle ◽  
Life Stages ◽  
Transcriptome Data ◽  
Evolutionary Processes ◽  
Critical Information ◽  
Asian Lady Beetle ◽  
Multicolored Asian Lady Beetle

The reasons for the evolution and maintenance of striking visual phenotypes are as widespread as the species that display these phenotypes. While study systems such as Heliconius and Dendrobatidae have been well characterized and provide critical information about the evolution of these traits, a breadth of new study systems, in which the phenotype of interest can be easily manipulated and quantified, are essential for gaining a more general understanding of these specific evolutionary processes. One such model is the multicolored Asian lady beetle, Harmonia axyridis, which displays significant elytral spot and color polymorphism. Using transcriptome data from two life stages, adult and larva, we characterize the transcriptome, thereby laying a foundation for further analysis and identification of the genes responsible for the continual maintenance of spot variation in H. axyridis.

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