First Record for the Biological Control Agent Rhinocyllus conicus (Coleoptera: Curculionidae) in a Threatened Native Thistle, Cirsium hillii (Asteraceae), in Wisconsin, U.S.A

2008 ◽  
Vol 119 (1) ◽  
pp. 90-95 ◽  
Author(s):  
Scott A. Sauer ◽  
Kate L. Bradley
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
First Record ◽  
Control Agent ◽  
Rhinocyllus Conicus

Is Phasmarhabditis papillosa (Nematoda: Rhabditidae) a possible biological control agent against the Spanish slug, Arion vulgaris (Gastropoda: Arionidae)?

Nematology ◽  
2020 ◽  
pp. 1-9
Author(s):  
Žiga Laznik ◽  
Ivana Majić ◽  
Stanislav Trdan ◽  
Antoinette P. Malan ◽  
Annika Pieterse ◽  
...  
Keyword(s):  
Biological Control ◽  
Laboratory Experiments ◽  
Biological Control Agent ◽  
First Record ◽  
Control Agent ◽  
Molecular Techniques ◽  
Parasitic Nematodes ◽  
Arion Vulgaris ◽  
Potential Use

Summary In the period from August to October 2018, 140 specimens of the Spanish slug, Arion vulgaris, were collected from Podbrezje, Slovenia. Slugs were dissected and examined for the presence of parasitic nematodes within the cadavers. Identification of the nematodes was conducted using morphological and molecular techniques and confirmed the presence of Phasmarhabditis papillosa. This is the first record of P. papillosa from the mollusc host, A. vulgaris. Laboratory experiments aimed at testing the efficacy of P. papillosa against A. vulgaris were conducted using nematodes grown in vivo. Nematodes were applied at concentration rates of 50, 100 and 200 nematodes slug−1, respectively. Three weeks following treatment, the mortality of slugs was confirmed in all treatments (50 nematodes slug−1, 37.4 ± 2.7%; 100 nematodes slug−1, 48.4 ± 2.7%; 200 nematodes slug−1, 50.6 ± 2.7%). However, the pathogenesis of P. papillosa was observed first in the treatments with the lowest nematode dose at 4 days after treatments, while a decrease in the feeding behaviour of slugs was noted first in the treatments with the highest nematode dose. Future opportunities for the potential use of P. papillosa as a biological control agent against slugs are discussed. This is the first report of P. papillosa from Slovenia, and of its virulence against A. vulgaris.

First Discovery of the Family Tanaostigmatidae (Hymenoptera: Chalcidoidea) from China with a Description of a New Gall-Making Species Utilizing Kudzu Leaves

2004 ◽  
Vol 39 (2) ◽  
pp. 275-280 ◽  
Author(s):  
Yang Zhong-qi ◽  
Sun Jiang-hua ◽  
James P. Pitts
Keyword(s):  
Biological Control ◽  
New Species ◽  
Second Generation ◽  
Biological Control Agent ◽  
First Record ◽  
Control Agent ◽  
The Family ◽  
Two Generations ◽  
A New Species

A new species of Tanaostigmodes (Hymenoptera: Chalcidoidea, Tanaostigmatidae) is described from China—Tanaostigmodes puerariae sp. nov. This is the first record of this family in China. This new species has potential as a biological control agent for control of kudzu, Pueraria lobate, in the U. S., because its preference for making leaf galls on kudzu. It was determined that the wasp has two generations per year, with the second generation overwintering as mature larvae in the gall on leaves that have dropped to the ground. Normally, only one wasp was found per gall, and a single kudzu leaf could have as many as 20 to 50 galls on its surface.

First record of Phasmarhabditis papillosa (Nematoda: Rhabditidae) in South Africa, and its virulence against the invasive slug, Deroceras panormitanum

Nematology ◽  
2017 ◽  
Vol 19 (9) ◽  
pp. 1035-1050 ◽  
Author(s):  
Annika Pieterse ◽  
Louwrens R. Tiedt ◽  
Antoinette P. Malan ◽  
Jenna L. Ross
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Additional Data ◽  
Biological Control Agent ◽  
First Record ◽  
Control Agent ◽  
Infective Juvenile ◽  
Mitochondrial Cytochrome ◽  
African Continent ◽  
Significant Mortality

Worldwide interest in Phasmarhabditis originates from the successful commercialisation of P. hermaphrodita as a biological control agent against molluscs in Europe. To date, P. hermaphrodita has not been isolated from South Africa and, therefore, the formulated product may not be sold locally. During a survey for mollusc-associated nematodes, P. papillosa was dissected from the slug, Deroceras reticulatum, collected from George, South Africa. The nematode was identified using a combination of morphological, morphometric, molecular and phylogenetic techniques. Virulence tests were conducted which demonstrated that P. papillosa caused significant mortality to the European invasive slug Deroceras panormitanum. Additional data are provided in the morphometrics of the infective juvenile and in the molecular identification, using the mitochondrial cytochrome c oxidase subunit I (cox1) gene. This is the first report of P. papillosa from the African continent and of its virulence against D. panormitanum.

scholarly journals First record of Ooencyrtus pallidipes (Ashmead) (Hymenoptera: Encyrtidae) parasitizing eggs of Erionota torus Evans (Lepidoptera: Hesperiidae) in India

2017 ◽  
Vol 30 (4) ◽  
pp. 217 ◽  
Author(s):  
Ankita Gupta ◽  
Sharana Basappa
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
First Record ◽  
Control Agent ◽  
Percent Parasitism ◽  
Egg Parasitism ◽  
Gregarious Parasitoid ◽  
First Time

The banana skipper <em>Erionota torus</em> Evans has recently emerged as a serious pest of banana. In the present study for the first time egg parasitism of <em>E. torus</em> by <em>Ooencyrtus pallidipes</em> (Ashmead), a gregarious parasitoid, is reported from India. The natural percent parasitism observed was 80−82% in the banana field located at Komanal, Shivamogga district, Karnataka. Since this parasitoid has served as an effective biological control agent for <em>E. torus</em> in Mauritius and Taiwan, possibilities are there that it can establish as a potential biological control agent in India as well.

Effects of Mowing or SprayingCarduus thoermerionRhinocyllus conicus

1991 ◽  
Vol 5 (3) ◽  
pp. 628-631 ◽  
Author(s):  
Philip W. Tipping
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent ◽  
Growth Stages ◽  
Full Bloom ◽  
Rhinocyllus Conicus

In 1988, mowing C.thoermerionce at the bud stage, twice at the bud stage, or once at early bloom of the primary inflorescences, eliminated emergence ofRhinocyllus conicus, a weevil introduced as a biological control agent. Mowing at full bloom reduced weevil survival by 78.8%, whereas mowing at senescence had no effect. In 1989, mowing at full bloom or senescence did not affect weevil survival. Dicamba applied at the full bloom or senescence stage did not affectR. conicussurvival, whereas hexazinone reducedR. conicussurvival when applied at all growth stages.

scholarly journals First record of Ooencyrtus pallidipes (Ashmead) (Hymenoptera: Encyrtidae) parasitizing eggs of Erionota torus Evans (Lepidoptera: Hesperiidae) in India

2017 ◽  
Vol 30 (4) ◽  
pp. 217
Author(s):  
Ankita Gupta ◽  
Sharana Basappa
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
First Record ◽  
Control Agent ◽  
Percent Parasitism ◽  
Egg Parasitism ◽  
Gregarious Parasitoid ◽  
First Time

The banana skipper <em>Erionota torus</em> Evans has recently emerged as a serious pest of banana. In the present study for the first time egg parasitism of <em>E. torus</em> by <em>Ooencyrtus pallidipes</em> (Ashmead), a gregarious parasitoid, is reported from India. The natural percent parasitism observed was 80−82% in the banana field located at Komanal, Shivamogga district, Karnataka. Since this parasitoid has served as an effective biological control agent for <em>E. torus</em> in Mauritius and Taiwan, possibilities are there that it can establish as a potential biological control agent in India as well.

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