Selitrichodes neseri n. sp., a new parasitoid of the eucalyptus gall wasp Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae: Tetrastichinae)

Zootaxa ◽  
2012 ◽  
Vol 3333 (1) ◽  
pp. 50 ◽  
Author(s):  
JANINE KELLY ◽  
JOHN LA SALLE ◽  
MARLENE HARNEY ◽  
GUDRUN DITTRICH-SCHRÖDER ◽  
BRETT HURLEY
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent ◽  
Biological Control Agents ◽  
Gall Wasp ◽  
Eucalyptus Plantations ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp

Selitrichodes neseri Kelly & La Salle n. sp. (Hymenoptera: Eulophidae: Tetrastichinae), is described as a parasitoid of the inva-sive eucalyptus gall wasp Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae: Tetrastichinae), which is causingsubstantial damage particularly in commercial Eucalyptus plantations. Selitrichodes neseri was originally collected in Australiain 2010 when searching for biological control agents of L. invasa. It has since been reared in quarantine in South Africa where it is being evaluated for release as a biological control agent of L. invasa.

Biology and host preference of Selitrichodes neseri: A potential biological control agent of the Eucalyptus gall wasp, Leptocybe invasa

2014 ◽  
Vol 78 ◽  
pp. 33-41 ◽  
Author(s):  
Gudrun Dittrich-Schröder ◽  
Marlene Harney ◽  
Stefan Neser ◽  
Tanya Joffe ◽  
Samantha Bush ◽  
...  
Keyword(s):  
Biological Control ◽  
Host Preference ◽  
Biological Control Agent ◽  
Control Agent ◽  
Gall Wasp ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp

scholarly journals A new parasitoid of the Erythrina Gall Wasp, Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae)

Zootaxa ◽  
2009 ◽  
Vol 2083 (1) ◽  
pp. 19-26 ◽  
Author(s):  
JOHN LA SALLE ◽  
Mohsen Ramadan ◽  
BERNARR R. KUMASHIRO
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent ◽  
Gall Wasp

Aprostocetus exertus La Salle (Hymenoptera: Eulophidae: Tetrastichinae) is described as a parasitoid of the invasive Erythrina Gall Wasp, Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae: Tetrastichinae). The description is based on material originally collected in Tanzania and South Africa. This species is described because of its potential as a biological control agent against the Erythrina Gall Wasp.

scholarly journals Biological control of eucalyptus Gall wasp, Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae) in Punjab, India

2020 ◽  
Vol 5 (2) ◽  
pp. 105-113
Author(s):  
Mohd. Yousuf ◽  
Sudhir Singh ◽  
Mohsin Ikram ◽  
Salman Khan
Keyword(s):  
Biological Control ◽  
Type Species ◽  
Biological Control Agents ◽  
Gall Wasp ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp

In this investigation, biological control of eucalyptus Gall wasp, Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae) in Punjab, India was investigated. The genus Leptocybe Fisher & La Salle (Hymenoptera: Eulophidae) was founded with its type species, L. invasa from Israel in 2004. Adult wasps of L. invasa   induce galls on the shoots and midribs of leaves of Eucalyptus sp. and also damage nursery seedlings and young plantations. In the present study, survey was carried out from the year 2012 to 2014, on gall wasp infestation in different eucalyptus growing areas of Punjab. Observations  revealed  that  eucalyptus  growing  areas  in  Punjab were  under  the threat  of  attack  by  gall  wasp,  L. invasa.  During the present study, biological control agents Megastimus viggianii and Quadrastichus mendeli have been successfully applied in the gall infested areas of Punjab, from 2012 to 2017, where infestation of gall wasp was regularly decreased and came below 10 % by July, 2017. Consequently, Eucalyptus gall forming insect L. invasa has been controlled successfully by applying the biological control through releasing the parasitoids (Megastimus viggianii and Quadrastichus mendeli), in Punjab, India.

scholarly journals Taxonomy, biology, and efficacy of two Australian parasitoids of the eucalyptus gall wasp, Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae: Tetrastichinae)

Zootaxa ◽  
2008 ◽  
Vol 1910 (1) ◽  
pp. 1-20 ◽  
Author(s):  
IL-KWON KIM ◽  
ZVI MENDEL ◽  
ALEXEY PROTASOV ◽  
DANIEL BLUMBERG ◽  
JOHN LA SALLE
Keyword(s):  
Biological Control ◽  
Control Program ◽  
Biological Control Agents ◽  
Gall Wasp ◽  
Fast Tracking ◽  
New Synonyms ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp ◽  
Honey Solution ◽  
Tracking Behavior

Two species of Tetrastichinae (Hymenoptera: Eulophidae) from Australia are described as parasitoids of Leptocybe invasa Fisher & La Salle: Quadrastichus mendeli Kim & La Salle sp.nov. and Selitrichodes kryceri Kim & La Salle sp. nov. These parasitoids were introduced to Israel as part of a biological control program to counter the severe levels of damage caused by L. invasa to Eucalyptus plantations throughout the Mediterranean Basin. The biology of these species, as well as their potential as biological control agents, is discussed. Both species are now successfully established in Israel. The parasitoids were collected from L. invasa galls on 3–4 year old Eucalyptus tereticornis trees in central west Queensland, between Gympie and Hervey Bay, and on the Atherton Tableland. Both species are small (about 1 mm in length), solitary, and apparently ectoparasitic wasps. S. kryceri is biparental whereas Q. mendeli is uniparental. Maximum survival (~ 6 days at 25°C) for both species was obtained when they were fed with honey solution. S. kryceri and Q. mendeli successfully parasitized approximately 2.2 and 2.5 gall units per day, respectively. Both species developed on both young and mature host larvae. L. invasa may be considered as an early colonizer of regenerated young stands in Australia, which may imply that its parasitoids will display a similar fast-tracking behavior with respect to their host in its invasive range. The generic status of Selitrichodes is reinstated, with Epomphaloides and Zagrammosomoides placed as new synonyms of Selitrichodes.

scholarly journals Mechanistically Compatible Mixtures of Bacterial Antagonists Improve Biological Control of Fire Blight of Pear

2011 ◽  
Vol 101 (1) ◽  
pp. 113-123 ◽  
Author(s):  
V. O. Stockwell ◽  
K. B. Johnson ◽  
D. Sugar ◽  
J. E. Loper
Keyword(s):  
Biological Control ◽  
Plant Disease ◽  
Fire Blight ◽  
Biological Control Agent ◽  
Field Trials ◽  
Control Agent ◽  
Extracellular Protease ◽  
Peptide Antibiotics ◽  
Biological Control Agents ◽  
Control Activity

Mixtures of biological control agents can be superior to individual agents in suppressing plant disease, providing enhanced efficacy and reliability from field to field relative to single biocontrol strains. Nonetheless, the efficacy of combinations of Pseudomonas fluorescens A506, a commercial biological control agent for fire blight of pear, and Pantoea vagans strain C9-1 or Pantoea agglomerans strain Eh252 rarely exceeds that of individual strains. A506 suppresses growth of the pathogen on floral colonization and infection sites through preemptive exclusion. C9-1 and Eh252 produce peptide antibiotics that contribute to disease control. In culture, A506 produces an extracellular protease that degrades the peptide antibiotics of C9-1 and Eh252. We hypothesized that strain A506 diminishes the biological control activity of C9-1 and Eh252, thereby reducing the efficacy of biocontrol mixtures. This hypothesis was tested in five replicated field trials comparing biological control of fire blight using strain A506 and A506 aprX::Tn5, an extracellular protease-deficient mutant, as individuals and combined with C9-1 or Eh252. On average, mixtures containing A506 aprX::Tn5 were superior to those containing the wild-type strain, confirming that the extracellular protease of A506 diminished the biological control activity of C9-1 and Eh252 in situ. Mixtures of A506 aprX::Tn5 and C9-1 or Eh252 were superior to oxytetracycline or single biocontrol strains in suppressing fire blight of pear. These experiments demonstrate that certain biological control agents are mechanistically incompatible, in that one strain interferes with the mechanism by which a second strain suppresses plant disease. Mixtures composed of mechanistically compatible strains of biological control agents can suppress disease more effectively than individual biological control agents.

Invaded habitat incompatibility affects the suitability of the potential biological control agent Listronotus sordidus for Sagittaria platyphylla in South Africa

2018 ◽  
Vol 28 (5) ◽  
pp. 468-485 ◽  
Author(s):  
Grant D. Martin ◽  
Julie A. Coetzee ◽  
Mellissa Lloyd ◽  
Sinoxolo E. Nombewu ◽  
Mpilonhle S. Ndlovu ◽  
...  
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent

Stagonospora atriplicis. [Descriptions of Fungi and Bacteria].

2005 ◽  
Author(s):  
T. V. Andrianova
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Czech Republic ◽  
New Zealand ◽  
Geographical Distribution ◽  
Biological Control Agent ◽  
Control Agent ◽  
Allenrolfea Occidentalis ◽  
Syzygium Guineense

Abstract A description is provided for Stagonospora atriplicis, a potential biological control agent of Atriplex and Chenopodium weeds. Information is included on the disease caused by the organism, its transmission, geographical distribution (Kenya, South Africa, Zimbabwe, Canada, USA, Colombia, Cyprus, Georgia, Kyrgyzstan, Russia, Australia, New Zealand, Austria, Belgium, Bulgaria, Czech Republic, Estonia, France, Germany, UK, Hungary, Italy, Latvia, Romania, Sweden, Ukraine and Hawaii) and hosts (Allenrolfea occidentalis, Atriplex spp., Chenopodium spp. and Syzygium guineense).

Nematode Control of Silverleaf Nightshade (Solanum elaeagnifolium); a Biological Control Pilot Project

Weed Science ◽  
1986 ◽  
Vol 34 (S1) ◽  
pp. 33-34 ◽  
Author(s):  
Paul E. Parker
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Pilot Project ◽  
Control Agent ◽  
Biological Control Agents ◽  
Insect Larvae ◽  
Parasitic Worm ◽  
Solanum Elaeagnifolium ◽  
Larval Insect ◽  
Wood Boring

The use of nematodes as biological control agents has been met with skepticism, partly due to the newness of the approach and also to the potential difficulties of using a parasitic worm as a control organism. Most of the attention directed towards nematodes as biological control agents has been focused on several species that act as insect parasites. Considerable headway has been achieved with several of these parasites, especially with those parasitic on wood-boring insect larvae. The insect gallery of wood-boring larvae provides an optimum microclimate for the nematode to survive and seek out its larval insect host. A system where this strategy has proved successful involves the use of the insect parasitic nematodeNeoaplectana carpocapsaeWeiser as a biological control agent for carpenterworms (Prionoxystus robinaePeck) in fig (Ficus cariaL.) orchards in California (6). Similar systems are being developed both here and abroad with the same nematode or a closely related genus or species. Many of these systems show promise (5).

scholarly journals First Report of Phragmidium violaceum Infecting Himalaya and Evergreen Blackberries in North America

2005 ◽  
Vol 6 (1) ◽  
pp. 25 ◽  
Author(s):  
N. Osterbauer ◽  
A. Trippe ◽  
K. French ◽  
T. Butler ◽  
M. C. Aime ◽  
...  
Keyword(s):  
South Africa ◽  
Biological Control ◽  
New Zealand ◽  
North America ◽  
Biological Control Agent ◽  
Control Agent ◽  
First Report ◽  
Official Report

Phragmidium violaceum occurs on several species of Rubus, including R. armeniacus, R. fruticosus agg., and R. laciniatus, in Europe, South Africa, Iran, and Iraq, and has been introduced as a biological control agent for invasive blackberries in Australia, New Zealand, and Chile. To our knowledge, this is the first official report of P. violaceum infecting Himalaya and evergreen blackberries in North America. Accepted for publication 16 September 2005. Published 23 September 2005.

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