scholarly journals Biology and fertility life table of Eriopis connexa, Harmonia axyridis and Olla v-nigrum (Coleoptera: Coccinellidae)

2015 ◽  
Vol 75 (4) ◽  
pp. 969-973 ◽  
Author(s):  
L. C. F. Zazycki ◽  
R. E. S. Semedo ◽  
A. Silva ◽  
A. Z. Bisognin ◽  
O. Bernardi ◽  
...  
Keyword(s):  
Biological Control ◽  
Population Growth ◽  
Life Table ◽  
Reproductive Performance ◽  
Harmonia Axyridis ◽  
Oviposition Period ◽  
Biological Control Agents ◽  
Biological Cycle ◽  
Eriopis Connexa ◽  
Harmonia Axyridis Pallas

Abstract The coccinellids Eriopis connexa (Germar), Harmonia axyridis (Pallas) and Olla v-nigrum (Mulsant) are important natural biological control agents. The purpose of this paper was to study the biology and create a fertility life table of these three coccinellid species. For the biology study, 50 insects/species were used and kept in groups of 10 in glass vials (2300cm3). For the three species studied, the viability of the total cycle varied from 45 to 50%. O. v-nigrum was the species which presented the longest oviposition period. However, H. axiridis demonstrated the best reproductive performance and ability of population growth in each generation. In conclusion, the use of commercially obtained pollen and A. kuenhiella eggs enables the development of coccinellids E. connexa, H. axyridis and O. v-nigrum under laboratory conditions, since the insects completed their biological cycle and originated adults with good reproductive performance.

scholarly journals The life cycle of Neotropical ground beetle, Abaris basistriata (Coleoptera: Carabidae) reared on different substrates

2017 ◽  
Vol 78 (3) ◽  
pp. 457-463 ◽  
Author(s):  
C. L. Barbosa-Andrade ◽  
F. J. Cividanes ◽  
S. T. S. Matos ◽  
D. J. Andrade
Keyword(s):  
Biological Control ◽  
Life Cycle ◽  
Ground Beetle ◽  
Carabid Beetle ◽  
Oviposition Period ◽  
Biological Control Agents ◽  
Agricultural Pests ◽  
Biological Cycle ◽  
The Third ◽  
Eggs And Larvae

Abstract Carabids are recognized worldwide as biological control agents of agricultural pests. The objective was to compare the life cycle of Abaris basistriata Chaudoir (Coleoptera: Carabidae) on three substrates: soil, fine vermiculite, or paper napkins. The biological cycle of A. basistriata presented different durations in soil and paper. The viability of eggs and larvae survival of the first and second instars were similar on all three substrates, while the third instar and pupa in the soil presented higher survival when compared with vermiculite and paper. The soil substrate was more favorable for the longevity of the carabid beetle. Abaris basistriata showed a shorter pre-oviposition period and a higher oviposition and post-oviposition period in the soil. Fecundity and fertility were higher when A. basistriata was reared on soil. The soil was most favorable substrate for rearing of A. basistriata in the laboratory. This information may make this species useful for the biological control.

scholarly journals Lethal and Sublethal Effects of Chlorpyrifos on Biological Traits and Feeding of the Aphidophagous Predator Harmonia axyridis

Insects ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 491
Author(s):  
Muhammad Asim Rasheed ◽  
Muhammad Musa Khan ◽  
Muhammad Hafeez ◽  
Jing Zhao ◽  
Yasir Islam ◽  
...  
Keyword(s):  
Biological Control ◽  
Population Growth ◽  
Harmonia Axyridis ◽  
Sublethal Effects ◽  
Developmental Period ◽  
Intrinsic Rate Of Increase ◽  
Biological Traits ◽  
Biological Control Agents ◽  
Sublethal Concentrations ◽  
Third Instar Larvae

Except of pest control, insecticides have shown adverse effects on natural enemies as well. Thus, risk assessment of pesticides for biological control agents is critical for effective use in integrated pest management (IPM) schemes. In the present study, the lethal and sublethal effects of chlorpyrifos, a commonly used insecticide that may negatively affect biological control agents, were evaluated on a non-target predator, the Asian ladybeetle Harmonia axyridis. Previous studies have reported on lethal concentrations, but the effects of sublethal concentrations remain unclear. Lethal and sublethal concentrations of chlorpyrifos were applied to third instar larvae of H. axyridis, and different growth and developmental parameters were measured. Treatment with LC10 (4.62 mg a.i. L−1) significantly shortened the developmental period of third instar larvae, whereas it significantly prolonged those of fourth instar larvae and pupa. Treatment with LC30 (9.59 mg a.i. L−1) significantly increased the larval and pupal developmental period compared with that of the control, whereas feeding potential, female fecundity, and adult longevity significantly decreased after LC10 and LC30 treatment. The pre-oviposition period significantly increased compared with that of the control. Population growth parameters, the finite (λ) and intrinsic rate of increase (r) and the net reproductive rate (R0), decreased following exposure to sublethal concentrations of chlorpyrifos. According to the results, the use of chlorpyrifos in IPM schemes requires further research because even sublethal concentrations of this insecticide were harmful to H. axyridis population growth.

scholarly journals Invasion history of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) in Ecuador

2020 ◽  
Author(s):  
Diego F. Cisneros-Heredia ◽  
Emilia Peñaherrera-Romero
Keyword(s):  
Biological Control ◽  
Harmonia Axyridis ◽  
Economic Impacts ◽  
Invasion History ◽  
Museum Specimens ◽  
Agricultural Pest ◽  
Harlequin Ladybird ◽  
The World ◽  
History Of ◽  
Harmonia Axyridis Pallas

AbstractHarmonia axyridis is a ladybird extensively used around the world for biological control of agricultural pest. However, it has become invasive in several countries, producing negative ecological and socio-economic impacts. Herein, we review the invasion history of the Harlequin Ladybird Harmonia axyridis (Pallas, 1773) in Ecuador. Although first reported in Ecuador in 2012, museum specimens date back to 2004 and it is currently established across the country, especially along the Andean region. Due to its invasive nature, further studies are urgently needed to evaluate possible impacts of H. axyridis on the Ecuadorian biodiversity and agroindustry.

scholarly journals Holistic approach to control Melolontha spp. in organic strawberry plantations

2020 ◽  
Vol 10 (S1) ◽  
pp. 13-22
Author(s):  
Eligio Malusá ◽  
Małgorzata Tartanus ◽  
Ewa M. Furmanczyk ◽  
Barbara H. Łabanowska
Keyword(s):  
Biological Control ◽  
Entomopathogenic Fungi ◽  
Predictive Models ◽  
Holistic Approach ◽  
Biological Control Agents ◽  
Light Traps ◽  
Biological Cycle ◽  
Effective Reduction ◽  
Different Strains ◽  
Root Feeding

AbstractTo achieve an effective reduction of the damage by root feeding grubs of Melolontha spp. in organic strawberry plantations, we have tested an approach targeting different stages of the insect’s biological cycle. Adult beetles were caught by using light traps or by manual shaking off trees associated to the monitoring of cockchafer swarm flights supported by forecasts models. Phytosanitary pre-crops and the application of biological control agents were tested against the larvae. The three predictive models utilized to forecast the period of emergence of the cockchafer were suitable to support the deployment of the light traps before the adults’ swarm flights. Traps positioned at 4-m height were more effective in attracting the beetles than those kept at 2-m height. Buckwheat in mixtures with either a mustard or leguminous species used as pre-crops was able to reduce the population of grubs, and considering also its capacity in solubilizing recalcitrant phosphorous sources should enter in a rotation with strawberry or any other crop susceptible to grubs damage. The distribution of two different strains of entomopathogenic fungi resulted in a reduction of the damage to plants due to the cockchafer grubs’ activity, even though the efficacy resulted to be dependent on environmental and agronomic factors, including the kind of formulation used. It is concluded that to assure a sufficient level of control of Melolontha spp. in organic strawberry plantations, it is necessary to integrate several methods that are targeting the different biological stages of the insect and are based on different kinds of practices.

Growth patterns of the ladybird (Harmonia axyridis Pallas) relative to variations in population genetics

1995 ◽  
Vol 16 (1) ◽  
pp. 35-38 ◽  
Author(s):  
R. P. Kuang ◽  
N. N. Xiao
Keyword(s):  
Population Genetics ◽  
Population Growth ◽  
Growth Rates ◽  
Harmonia Axyridis ◽  
Growth Parameters ◽  
Growth Patterns ◽  
The Other ◽  
Ladybird Beetle ◽  
Harmonia Axyridis Pallas

AbstractDifferences in population growth among four variation types of the ladybird beetle, Harmonia axyridis Pallas, namely succinea, conspicua, spectabilis and aulica, were investigated using various growth parameters. The variation types showed three growth patterns from the intrinsic growth rates (rm), with rates of 0.093–0.099 (for conspicua and aulica), 0.073 (for succinea) and 0.040 (for spectabilis). The growth rates of these patterns were realised in different ways. Spectabilis differed from the other three types in the age and per cent distribution of the specific period to the rm values.

scholarly journals Parasitism of Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) by Strongygaster brasiliensis (Towsend) (Diptera: Tachinidae)

2018 ◽  
Vol 11 (1) ◽  
pp. 49-51 ◽  
Author(s):  
Camila Fediuk de Castro-Guedes ◽  
Rodrigo de Vilhena Perez Dios ◽  
Lúcia Massutti de Almeida
Keyword(s):  
Biological Control ◽  
Exotic Species ◽  
Natural Enemies ◽  
Harmonia Axyridis ◽  
Northeast Asia ◽  
First Record ◽  
Harmonia Axyridis Pallas

Abstract. Harmonia axyridis (Pallas) is a Coccinellidae species originating from northeast Asia and used in biological control of aphids. As an exotic species is very important to know its natural enemies. Thus, this paper provides the first record of Strongygaster brasiliensis (Towsend)(Diptera: Tachinidae) parasitizing H. axyridis in Southern Brazil.Parasitismo de Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) por Strongygaster brasiliensis (Towsend)(Diptera: Tachinidae)Resumo. Harmonia axyridis (Pallas) é uma espécie de Coccinellidae originária do Nordeste da Ásia e utilizada como agente de controle biológico de afídeos. Como é uma espécie invasora é muito importante conhecer seus inimigos naturais. Dessa forma, este trabalho fornece o primeiro registro de Strongygaster brasiliensis (Towsend)(Diptera: Tachinidae) parasitando H. axyridis no sul do Brasil.

Effects of delayed mating on the reproductive biology of the vine mealybug, Planococcus ficus (Hemiptera: Pseudococcidae)

2017 ◽  
Vol 108 (2) ◽  
pp. 263-270 ◽  
Author(s):  
A. Lentini ◽  
A. Mura ◽  
E. Muscas ◽  
M.T. Nuvoli ◽  
A. Cocco
Keyword(s):  
Population Growth ◽  
Life Table ◽  
Growth Rates ◽  
Oviposition Period ◽  
Population Doubling ◽  
Population Doubling Time ◽  
Life Table Parameters ◽  
Planococcus Ficus ◽  
Population Growth Rates ◽  
Vine Mealybug

AbstractThe effect of increasing mating delay on the reproductive performance and population growth rates of the vine mealybug, Planococcus ficus (Signoret) (Hemiptera: Pseudococcidae), was investigated under laboratory conditions. Virgin females were mated at 1, 3, 5, 7, 14, 21 and 28 days after emergence and reproductive and life table parameters were estimated. The pre-oviposition period (number of days between mating and the onset of oviposition) significantly decreased in females mated within 7 days, whereas females mated at older ages showed equivalent pre-oviposition periods (<4 days). The length of the oviposition period did not vary with increasing age at mating. Female longevity significantly increased in females mated at 21 and 28 days, as a consequence of a longer pre-reproductive period. Fecundity and sex ratio were not affected by the female age at mating, whereas fertility was higher in mealybugs mated at older ages. Additional field observations highlighted that young and old virgin females were equally able to attract males, as both mated on the same day as the field release. Mating delay also affected the life table parameters of P. ficus, as the intrinsic and finite rates of increase did not differ in mealybugs mated within 7 days and significantly decreased in females mated at older ages. The mean generation time and the population doubling time were overall similar in females mated at 1–7 days, and increased significantly in females that experienced longer mating delays. In terms of the mating disruption control of P. ficus, our findings indicate that this method would be effective if mating is delayed >7 days, as shorter delays in mating did not reduce the population growth rates.

scholarly journals Morfologia dos Coccinellini (Coleoptera: Coccinellidae) Depositados na Coleção Entomológica dos Campos Gerais do Paraná, Ponta Grossa, Paraná

2012 ◽  
Vol 5 (2) ◽  
pp. 146-163 ◽  
Author(s):  
Julianne Milléo ◽  
Willian Vanderlei Meira
Keyword(s):  
Comparative Analysis ◽  
Harmonia Axyridis ◽  
Hippodamia Convergens ◽  
Eriopis Connexa ◽  
Harmonia Axyridis Pallas

Foi realizada uma análise comparativa com base na morfologia detalhada do exoesqueleto e genitália do adulto de oito espécies de Coccinellini: Coleomegilla quadrifasciata (Schönherr, 1808); Cycloneda sanguinea (Linnaeus, 1763); Cycloneda pulchella (Klug, 1829); Eriopis connexa (Germar, 1824); Harmonia axyridis (Pallas, 1773); Hippodamia convergens (Guérin, 1842); Neocalvia anastomozans (Crotch, 1874); Olla v-nigrum (Mulsant, 1866). É apresentado uma chave de identificação, diagnose para cada espécie com a descrição de novos caracteres, além do registro das plantas nas quais foram coletadas. Morphology of the Coccinellini (Coleoptera, Coccinellidae) deposited in the Coleção Entomológica dos Campos Gerais do Paraná, Ponta Grossa, Paraná Abstract. A comparative analysis was carried out based on the detailed morphology of exoskeleton and genitalia of the adult of eight species of the Coccinellini: Coleomegilla quadrifasciata (Schönherr, 1808); Cycloneda sanguinea (Linnaeus, 1763); Cycloneda pulchella (Klug, 1829); Eriopis connexa (Germar, 1824); Harmonia axyridis (Pallas, 1773); Hippodamia convergens (Guérin, 1842); Neocalvia anastomozans (Crotch, 1874); Olla v-nigrum (Mulsant, 1866). A dichotomic key, diagnoses for the species with description of new characters and records of the plants in which it was collected, are added.

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