scholarly journals Biological control of Brevicoryne brassicae by release of Coccinella septempunctata on Alfalfa plant, Medicago sativa

2016 ◽  
Vol 9 (2) ◽  
pp. 171-178
Author(s):  
Habeeb. M. , Al-Solami ◽  
Khalid M. Al-Ghamdi ◽  
Ashraf A. H. Mangoud ◽  
Jazem A. Mahyoub
Keyword(s):  
Biological Control ◽  
Medicago Sativa ◽  
Coccinella Septempunctata ◽  
Brevicoryne Brassicae ◽  
Alfalfa Plant

The Status of Coccinella septempunctata L. and its Varieties divaricata Oliv. and confusa Wied.

1962 ◽  
Vol 94 (12) ◽  
pp. 1341-1343 ◽  
Author(s):  
V. Sudha Rao
Keyword(s):  
Biological Control ◽  
Coccinella Septempunctata ◽  
Silver Fir ◽  
Eastern Himalayas ◽  
North West ◽  
The North ◽  
Large Numbers ◽  
The Status ◽  
Commonwealth Institute ◽  
Indian Station

A survey was recently undertaken by the author with Dr. V. P. Rao, Entomologist-in-charge, Indian Station, Commonwealth Institute of Biological Control, Bangalore, India, for natural enemies of Adelges spp. attacking silver fir (Abies spp.) and spruce (Picea spp.) in the North-West and Eastern Himalayas. In the course of this survey it was found that the coccinellids Coccinella septem-punctata L., C. septempunctata L. var. divaricata Oliv. and C. septempunctata L. var. confusa Wied, were three of the most common predators of Adelges spp. in both these areas. With a view to sending laboratory-reared material to Canada for trial against Adelges piceae Ratz., which is a serious pest there, large numbers of these Coccinellids were collected in the fir and spruce forests to provide breeding material.

scholarly journals Natural Entomophages of Brevicoryne Brassicae (L.) (Hemiptera: Aphididae) in Uzbekistan

2019 ◽  
Vol 11 (4) ◽  
pp. 42
Author(s):  
Kahramon B. Razzakov ◽  
Ikram. I. Abdullaev ◽  
Ko’pal O. Saparboev ◽  
Mavluda M. Allaberganova
Keyword(s):  
Coccinella Septempunctata ◽  
Early Spring ◽  
Brevicoryne Brassicae ◽  
Episyrphus Balteatus ◽  
Cabbage Aphid ◽  
Reproductive Ability ◽  
Chrysopa Carnea ◽  
Biological Effectiveness ◽  
Cabbage Aphids ◽  
Phenological Phases

In our studies phenological phases of cabbage aphids Brevicoryne brassicae (L.) were studied. The influence of external factors (humidity and temperature) was studied under laboratory conditions. The maximum reproductive ability of cabbage aphids was noted in spring and autumn. Some of the parthenogenetic aphids gave about 82 larvae. The daily reproductive ability of aphids was 3-5, and the maximum 5-11. When studying the reproductive ability of parthenogenetic aphids, this indicator was slightly lower than that of the wingless aphids (average 28, maximum 51). The overall development of cabbage aphid seeds averaged 7–9 days in summer and 12–21 days in early spring and autumn. The importance and bioecological features of Metamorphus corollae (F.), Episyrphus balteatus (De Geer, 1776), Syrphus vitripennis (Meigen, 1822), Scaeva pyrastri (L.) Coccinella septempunctata (L.) and Adonia variegata (G.), Chrysopa carnea Steph. with natural control of the cabbage aphid were studied. Studying the biological effectiveness of a simple golden-eyed fly in relation to the cabbage bug, efficiencies were observed at a ratio of II-year-old larvae of simple golden-eyed and cabbage bug in a ratio of 1:5 and 1:10. For 4 day old gold-eyed eggs, this efficiency was observed when the ratio with cabbage bug was 1:1 on the 17th day of the experiment.

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