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.

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.

scholarly journals FIRST RECORD OF HARMONIA AXYRIDIS (PALLAS, 1773) (COLEOPTERA: COCCINELLIDAE) FROM MONTENEGRO

2016 ◽  
Vol 6 ◽  
pp. 40-41
Author(s):  
Aleksandra Gligorović ◽  
Halil Ibrahimi ◽  
Bogić Gligorović
Keyword(s):  
Harmonia Axyridis ◽  
First Record ◽  
First Time ◽  
Harmonia Axyridis Pallas

In this paper the alien coccinellid Harmonia axyridis (Pallas, 1773) is reported for the first time for Montenegro.

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 Seasonal dynamics of: the pea aphid, Acyrthosiphon pisum (Harris), its natural enemies the seven spotted lady beetle Coccinella septempunctata Linnaeus and variegated lady beetle Hippodamia variegata Goeze, and their parasitoid Dinocampus coccinellae (Schrank)

2015 ◽  
Vol 55 (4) ◽  
pp. 421-428 ◽  
Author(s):  
Safura Soleimani ◽  
Hossein Madadi
Keyword(s):  
Acyrthosiphon Pisum ◽  
Coccinella Septempunctata ◽  
Aphid Species ◽  
Lady Beetle ◽  
Pea Aphid ◽  
Beetle Species ◽  
Dinocampus Coccinellae ◽  
Parasitism Rates ◽  
Hippodamia Variegata ◽  
Aphid Populations

Abstract Two important lady beetle species commonly found in alfalfa fields in Iran are the variegated lady beetle Hippodamia variegata Goeze and the seven spotted lady beetle Coccinella septempunctata (Linnaeus, 1758) (Coleoptera: Coccinellidae). These two species attack many aphid species including the pea aphid, Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae). In this study, the seasonal population changes of A. pisum, H. variegata, C. septempunctata and the parasitoid, Dinocampus coccinellae (Schrank) (Hymenoptera: Braconidae) were studied in alfalfa fields in the 2012 and 2013 seasonal periods. The highest ladybird densities were noted on July 5, 2012 and on September 6, 2013 (17.2±2.8 and 13.4±1.6) individuals per 20 sweeps, respectively. Parasitism rates by D. coccinellae ranged from approximately 3 to 6% in two subsequent years, respectively. Parasitism was higher early in the growing season. Most parasitised ladybirds were females. There was no significant relationship between the temperature and relative humidity with pea aphid populations, although the aphid populations declined during the hot summer period. In contrast, the relationship between temperature and the H. variegata population was significant and positive in both years of the study. It has been shown that these lady beetle species have a major role in reducing the pea aphid populations in alfalfa fields. Due to the relatively low percentage of field parasitism by D. coccinellae, this parasite might not reduce the biocontrol efficiency of lady beetle species.

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