Studies on the rustProspodium tuberculatum, a new classical biological control agent released against the invasive alien weedLantana camarain Australia. 2. Host range

2006 ◽  
Vol 35 (3) ◽  
pp. 321 ◽  
Author(s):  
S. E. Thomas ◽  
C. A. Ellison ◽  
A. J. Tomley
Keyword(s):  
Biological Control ◽  
Host Range ◽  
Biological Control Agent ◽  
Classical Biological Control ◽  
Control Agent

Physiological Host Range of Trissolcus Mitsukurii, A Candidate Biological Control Agent of Halyomorpha Halys

2021 ◽  
Author(s):  
Lucrezia Giovannini ◽  
Giuseppino Sabbatini-Peverieri ◽  
Leonardo Marianelli ◽  
Gabriele Rondoni ◽  
Eric Conti ◽  
...  
Keyword(s):  
Biological Control ◽  
Host Range ◽  
Biocontrol Agent ◽  
Biological Control Agent ◽  
Classical Biological Control ◽  
Egg Parasitoid ◽  
Control Agent ◽  
Egg Load ◽  
Halyomorpha Halys ◽  
Stink Bug

Abstract The invasive stink bug Halyomorpha halys is a severe agricultural pest of worldwide importance, and chemical insecticides are largely sprayed for the control of its populations. Negative impacts and several failures in chemical pest management led to consider classical biological control as one of the most promising methods in a long-term perspective. The Asian egg parasitoid Trissolcus japonicus is the main candidate biocontrol agent of H. halys, but more recently a second Asian egg parasitoid, Trissolcus mitsukurii, is getting attention after adventive populations were found on H. halys egg masses in Europe. Before recommending the use of T. mitsukurii for biological control of H. halys, a risk analysis is necessary and therefore here we present the first study on the fundamental physiological host range of this parasitoid in Europe. Tests conducted with T. mitsukurii on different hemipterans, using three different experimental designs, revealed a broad physiological host range, comparable with the host range displayed by T. japonicus under similar laboratory conditions. Specifically, in addition to its coevolved host H. halys, T. mitsukurii successfully parasitized the majority of tested pentatomid species and one scutellerid, although with highly variable emergence rates. Host egg sizes positively affected parasitoid size and female egg load. Further studies, testing more complex systems that involve olfactory cues from host and host plants, will simulate different aspects of the parasitoid host location behavior under field conditions, allowing in-depth evaluation of the possible risks associated with the use of T. mitsukurii as a biocontrol agent of H. halys.

scholarly journals Limited host range in the idiobiont parasitoid Phymasticus coffea, a prospective biological control agent of the coffee pest Hypothenemus hampei in Hawaii

2021 ◽  
Author(s):  
Fazila Yousuf ◽  
Peter A. Follett ◽  
Conrad P. D. T. Gillett ◽  
David Honsberger ◽  
Lourdes Chamorro ◽  
...  
Keyword(s):  
Biological Control ◽  
Native Species ◽  
Biological Control Agent ◽  
Classical Biological Control ◽  
Environmental Safety ◽  
Control Agent ◽  
Hypothenemus Hampei ◽  
Parasitism Rate ◽  
Limited Host Range ◽  
Parasitoid Development

AbstractPhymastichus coffea LaSalle (Hymenoptera:Eulophidae) is an adult endoparasitoid of the coffee berry borer, Hypothenemus hampei (Ferrari) (Coleoptera:Curculionidae:Scolytinae), which has been introduced in many coffee producing countries as a biological control agent. To determine the effectiveness of P. coffea against H. hampei and environmental safety for release in Hawaii, we investigated the host selection and parasitism response of adult females to 43 different species of Coleoptera, including 23 Scolytinae (six Hypothenemus species and 17 others), and four additional Curculionidae. Non-target testing included Hawaiian endemic, exotic and beneficial coleopteran species. Using a no-choice laboratory bioassay, we demonstrated that P. coffea was only able to parasitize the target host H. hampei and four other adventive species of Hypothenemus: H. obscurus, H. seriatus, H. birmanus and H. crudiae. Hypothenemus hampei had the highest parasitism rate and shortest parasitoid development time of the five parasitized Hypothenemus spp. Parasitism and parasitoid emergence decreased with decreasing phylogenetic relatedness of the Hypothenemus spp. to H. hampei, and the most distantly related species, H. eruditus, was not parasitized. These results suggest that the risk of harmful non-target impacts is low because there are no native species of Hypothenemus in Hawaii, and P. coffea could be safely introduced for classical biological control of H. hampei in Hawaii.

Physiological host range of Trissolcus mitsukurii, a candidate biological control agent of Halyomorpha halys in Europe

2021 ◽  
Author(s):  
Lucrezia Giovannini ◽  
Giuseppino Sabbatini-Peverieri ◽  
Leonardo Marianelli ◽  
Gabriele Rondoni ◽  
Eric Conti ◽  
...  
Keyword(s):  
Biological Control ◽  
Host Range ◽  
Biological Control Agent ◽  
Control Agent ◽  
Halyomorpha Halys

scholarly journals Biological and Host Range Characteristics of Lysathia flavipes (Coleoptera: Chrysomelidae), a Candidate Biological Control Agent of Invasive Ludwigia spp. (Onagraceae) in the USA

Insects ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 471
Author(s):  
Angelica M. Reddy ◽  
Paul D. Pratt ◽  
Brenda J. Grewell ◽  
Nathan E. Harms ◽  
Ximena Cibils-Stewart ◽  
...  
Keyword(s):  
Biological Control ◽  
Host Range ◽  
Plant Species ◽  
Biocontrol Agent ◽  
Biological Control Agent ◽  
Control Agent ◽  
Native Plant ◽  
Native Plant Species ◽  
The Usa ◽  
Physical And Chemical

Exotic water primroses (Ludwigia spp.) are aggressive invaders in aquatic ecosystems worldwide. To date, management of exotic Ludwigia spp. has been limited to physical and chemical control methods. Biological control provides an alternative approach for the management of invasive Ludwigia spp. but little is known regarding the natural enemies of these exotic plants. Herein the biology and host range of Lysathia flavipes (Boheman), a herbivorous beetle associated with Ludwigia spp. in Argentina and Uruguay, was studied to determine its suitability as a biocontrol agent for multiple closely related target weeds in the USA. The beetle matures from egg to adult in 19.9 ± 1.4 days at 25 °C; females lived 86.3 ± 35.6 days and laid 1510.6 ± 543.4 eggs over their lifespans. No-choice development and oviposition tests were conducted using four Ludwigia species and seven native plant species. Lysathia flavipes showed little discrimination between plant species: larvae aggressively fed and completed development, and the resulting females (F1 generation) oviposited viable eggs on most plant species regardless of origin. These results indicate that L. flavipes is not sufficiently host-specific for further consideration as a biocontrol agent of exotic Ludwigia spp. in the USA and further testing is not warranted.

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