Conspecific pheromone extracts enhance entomopathogenic infectivity
Entomopathogenic nematodes (EPNs) provide economic control of various insect pests. However, field efficacy can be inconsistent. The ability of a nematode to find and infect (invade) a host insect is critical to successful pathogenesis. Thus, behaviors including dispersal and infectivity play import...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sciendo
2019-01-01
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| Series: | Journal of Nematology |
| Subjects: | |
| Online Access: | https://doi.org/10.21307/jofnem-2019-082 |
| _version_ | 1811159281599250432 |
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| author | Shapiro-Ilan David I. Kaplan Fatma Oliveira-Hofman Camila Schliekelman Paul Alborn Hans T. Lewis Edwin E. |
| author_facet | Shapiro-Ilan David I. Kaplan Fatma Oliveira-Hofman Camila Schliekelman Paul Alborn Hans T. Lewis Edwin E. |
| author_sort | Shapiro-Ilan David I. |
| collection | DOAJ |
| description | Entomopathogenic nematodes (EPNs) provide economic control of various insect pests. However, field efficacy can be inconsistent. The ability of a nematode to find and infect (invade) a host insect is critical to successful pathogenesis. Thus, behaviors including dispersal and infectivity play important roles in improving efficacy. Previously, we discovered that EPN-infected host substances enhance nematode dispersal. Later we found that a mixture of pheromones in the infected host induced dispersal and improved EPN efficacy. In this study, we determined if dispersal-inducing pheromone extracts also increase nematode infectivity (the propensity to invade a host insect). Two nematode species, Steinernema carpocapsae and Steinernema feltiae, and two insect hosts, Galleria mellonella and Diaprepes abbreviatus, were tested. We discovered that conspecific dispersal pheromone extracts of each EPN species enhanced infectivity. These results indicate that the utility of dispersal pheromone extracts for enhancing EPN activity and biocontrol efficacy is improved not only due to increased nematode movement, but also due to increased host infection. |
| first_indexed | 2024-04-10T05:38:22Z |
| format | Article |
| id | doaj.art-f12458a99ca7468fb296d1e920236086 |
| institution | Directory Open Access Journal |
| issn | 2640-396X |
| language | English |
| last_indexed | 2024-04-10T05:38:22Z |
| publishDate | 2019-01-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Journal of Nematology |
| spelling | doaj.art-f12458a99ca7468fb296d1e9202360862023-03-06T16:52:21ZengSciendoJournal of Nematology2640-396X2019-01-015111510.21307/jofnem-2019-082Conspecific pheromone extracts enhance entomopathogenic infectivityShapiro-Ilan David I.0Kaplan Fatma1Oliveira-Hofman Camila2Schliekelman Paul3Alborn Hans T.4Lewis Edwin E.5USDA-ARS, Southeastern Fruit and Tree Nut Research Lab, Byron, GA 31008 USAPheronym, Inc., Davis, CA 95618 USAUSDA-ARS, Southeastern Fruit and Tree Nut Research Lab, Byron, GA 31008 USADepartment of Statistics, University of Georgia, Athens, GA USAUSDA-ARS CMAVE, Gainesville, FL 32608 USADepartment of Entomology, Plant Pathology and Nematology, University of Idaho, Moscow, ID 83844 USAEntomopathogenic nematodes (EPNs) provide economic control of various insect pests. However, field efficacy can be inconsistent. The ability of a nematode to find and infect (invade) a host insect is critical to successful pathogenesis. Thus, behaviors including dispersal and infectivity play important roles in improving efficacy. Previously, we discovered that EPN-infected host substances enhance nematode dispersal. Later we found that a mixture of pheromones in the infected host induced dispersal and improved EPN efficacy. In this study, we determined if dispersal-inducing pheromone extracts also increase nematode infectivity (the propensity to invade a host insect). Two nematode species, Steinernema carpocapsae and Steinernema feltiae, and two insect hosts, Galleria mellonella and Diaprepes abbreviatus, were tested. We discovered that conspecific dispersal pheromone extracts of each EPN species enhanced infectivity. These results indicate that the utility of dispersal pheromone extracts for enhancing EPN activity and biocontrol efficacy is improved not only due to increased nematode movement, but also due to increased host infection.https://doi.org/10.21307/jofnem-2019-082biological controlentomopathogenic nematodeinfectivitypheromonesteinernema |
| spellingShingle | Shapiro-Ilan David I. Kaplan Fatma Oliveira-Hofman Camila Schliekelman Paul Alborn Hans T. Lewis Edwin E. Conspecific pheromone extracts enhance entomopathogenic infectivity Journal of Nematology biological control entomopathogenic nematode infectivity pheromone steinernema |
| title | Conspecific pheromone extracts enhance entomopathogenic infectivity |
| title_full | Conspecific pheromone extracts enhance entomopathogenic infectivity |
| title_fullStr | Conspecific pheromone extracts enhance entomopathogenic infectivity |
| title_full_unstemmed | Conspecific pheromone extracts enhance entomopathogenic infectivity |
| title_short | Conspecific pheromone extracts enhance entomopathogenic infectivity |
| title_sort | conspecific pheromone extracts enhance entomopathogenic infectivity |
| topic | biological control entomopathogenic nematode infectivity pheromone steinernema |
| url | https://doi.org/10.21307/jofnem-2019-082 |
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