Host utilization, reproductive biology, and development of the larval parasitoid Tetrastichus planipennisi as influenced by temperature: Implications for biological control of the emerald ash borer in North America

2018 ◽  
Vol 125 ◽  
pp. 50-56
Author(s):  
Jian J. Duan ◽  
Jonathan M. Schmude ◽  
Xiao-Yi Wang ◽  
Timothy J. Watt ◽  
Leah S. Bauer
Keyword(s):  
Biological Control ◽  
North America ◽  
Reproductive Biology ◽  
Emerald Ash Borer ◽  
Larval Parasitoid ◽  
Tetrastichus Planipennisi ◽  
Host Utilization

Phenology of Emerald Ash Borer (Coleoptera: Buprestidae) and Its Introduced Larval Parasitoids in the Northeastern United States

2019 ◽  
Vol 113 (2) ◽  
pp. 622-632 ◽  
Author(s):  
Michael I Jones ◽  
Juli R Gould ◽  
Hope J Mahon ◽  
Melissa K Fierke
Keyword(s):  
United States ◽  
New York ◽  
Biological Control ◽  
North America ◽  
Russian Far East ◽  
Far East ◽  
Emerald Ash Borer ◽  
Life Cycles ◽  
Agrilus Planipennis ◽  
Larval Parasitoids

Abstract Biological control offers a long-term and sustainable option for controlling the destructive forest pest emerald ash borer (EAB), Agrilus planipennis Fairmaire, in North America. Three larval parasitoids, Spathius agrili Yang (Hymenoptera: Braconidae), Tetrastichus planipennisi Yang (Eulophidae), and Spathius galinae Belokobylskij & Strazanac, have been introduced to North America from the native range of EAB (northeastern Asia). While T. planipennisi appears to be persisting where it has been introduced in northern United States, S. agrili failed to establish in northeastern states. The more recently identified parasitoid S. galinae was recovered from the Russian Far East and climate matching suggests it should be suited for release in colder climates. We collected data on the phenology of EAB and its introduced larval parasitoids from colonies established in an insectary, growth chambers, and field-caged trees in Syracuse, New York to determine whether asynchrony between parasitoids and EAB or climate could impact establishment and persistence. Phenological data indicated EAB has one and 2-yr life cycles in New York, with parasitoid-susceptible EAB larvae available spring to fall for parasitism. Insectary and growth chamber studies indicated S. galinae and T. planipennisi were synchronous with EAB phenology, and field studies suggested both species could overwinter in northeastern climates. Spathius agrili was asynchronous with EAB phenology and climate, emerging when fewer parasitoid-susceptible EAB larvae were available and temperatures were not optimal for survival. Our results suggest S. galinae and T. planipennisi are suited for biological control of EAB at the northern limits of its range in North America.

scholarly journals Parasitoid Guilds ofAgrilusWoodborers (Coleoptera: Buprestidae): Their Diversity and Potential for Use in Biological Control

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Philip B. Taylor ◽  
Jian J. Duan ◽  
Roger W. Fuester ◽  
Mark Hoddle ◽  
Roy Van Driesche
Keyword(s):  
Biological Control ◽  
North America ◽  
Host Plants ◽  
Emerald Ash Borer ◽  
Agrilus Planipennis ◽  
Native Parasitoids ◽  
The Family ◽  
The Usa ◽  
Egg Parasitism ◽  
Hymenopteran Parasitoids

Literature studies in North America (US and Canada), Europe, and Asia (particularly Russia, China, Japan, and the Korean peninsula) were reviewed to identify parasitoid guilds associated withAgriluswoodborers. There are at least 12 species of hymenopteran parasitoids attacking eggs ofAgrilusbeetles and 56 species (36 genera), attackingAgriluslarvae infesting various host plants in North America, Asia, and Europe. While most of the egg parasitoids (9 species) belong to the family Encyrtidae, a majority of the larval parasitoids are members of five families: Braconidae (24 species/11 genera), Eulophidae (8 species/4 genera), Ichneumonidae (10 species/9 genera), and Eupelmidae (6 species/5 genera). The highest rate ofAgrilusegg parasitism (>50%) was exerted by encyrtid wasps (4 species) in North America, Asia, and Europe. In contrast, the highest rate ofAgriluslarval parasitism (>50%) was caused by species in two genera of braconids:Atanycolus(North America) andSpathius(Asia), and one eulophid genus,Tetrastichus(Asia and Europe). Reported rate ofAgriluslarval parasitism ichneumonids was frequent in North America, but generally low (<1%). Potential for success in biological control of emerald ash borer (Agrilus planipennisFairmaire) in the USA with North American native parasitoids and old-association Asian parasitoids is discussed.

scholarly journals Host Overwintering Phenology and Climate Change Influence the Establishment of Tetrastichus planipennisi Yang (Hymenoptera: Eulophidae), a Larval Parasitoid Introduced for Biocontrol of the Emerald Ash Borer

2020 ◽  
Vol 113 (6) ◽  
pp. 2641-2649
Author(s):  
Juli R Gould ◽  
Melissa L Warden ◽  
Benjamin H Slager ◽  
Theresa C Murphy
Keyword(s):  
Climate Change ◽  
United States ◽  
Biological Control ◽  
Emerald Ash Borer ◽  
Control Program ◽  
The United States ◽  
Agrilus Planipennis ◽  
Climate Change Scenarios ◽  
Ongoing Research ◽  
Tetrastichus Planipennisi

Abstract Emerald ash borer, Agrilus planipennis Fairmaire (Coleoptera: Buprestidae), is one of the most serious forest pests in the United States. Ongoing research indicates that establishment of larval parasitoids depends upon the season-long availability of host stages susceptible to parasitism. We monitored emerald ash borer overwintering stages at 90 sites across 22 states to: 1) produce a model of the percentage of emerald ash borer overwintering as non-J larvae; 2) link that model to establishment of Tetrastichus planipennisi; and 3) explore changes to our model under climate change scenarios. Accumulated growing degree days (GDD) is an important predictor of the proportion of emerald ash borer overwintering as non-J larvae (1–4 instar larvae under the bark; available to parasitoids emerging in spring) versus J-larvae (fourth-instar larvae in pupal chambers in the outer wood; unavailable to parasitoids). From north to south, the availability of non-J emerald ash borer larvae in the spring decreases as accumulated GDD increases. In areas where the model predicted &gt;46–75%, &gt;30–46%, &gt;13–30%, or ≤13% of emerald ash borer overwintering as non-J larvae, the probability of establishment of T. planipennisi was 92%, 67%, 57%, and 21%, respectively. We determined that 13% of emerald ash borer overwintering as non-J larvae was the lowest threshold for expected T. planipennisi establishment. Additional modeling predicts that under climate change, establishment of T. planipennisi will be most affected in the Central United States, with areas that are currently suitable becoming unsuitable. Our results provide a useful tool for the emerald ash borer biological control program on how to economically and successfully deploy emerald ash borer biological control agents.

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