Differential development times of galls induced by Leptocybe invasa (Hymenoptera: Eulophidae) reveal differences in susceptibility between two Eucalyptus clones
| Autor: | Carlos Henrique Oliveira Lima, Wagner L. Araújo, Renata Carvalho da Silva, Renato de Almeida Sarmento, Glória Pinto, Amadeu M.V.M. Soares, Maíra Ignacio Sarmento |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Oviposition Wasps Hymenoptera digestive system 01 natural sciences Host-Parasite Interactions fluids and secretions Plant Tumors Botany Plant defense against herbivory Gall Animals Eucalyptus Eulophidae biology Host (biology) fungi digestive oral and skin physiology Gall wasp General Medicine biology.organism_classification digestive system diseases Clone Cells 010602 entomology Insect Science Female PEST analysis Leptocybe invasa Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Pest management scienceREFERENCES. 77(2) |
| ISSN: | 1526-4998 |
| Popis: | BACKGROUND The significance of morphological responses of hosts on susceptibility against gall-inducing insects is relatively unknown, especially in planted forests. Here, we investigate the temporal morphological responses (gall development) induced by the invasive gall wasp Leptocybe invasa and the subsequent insect development in two Eucalyptus clones. RESULTS Our results identified a novel stage of gall development, not previously reported, termed here 'brownish ring'. In both hosts similar gall development stages were observed. Although L. invasa oviposited in both clones, comparison of external morphological traits of galls over time revealed a differential response in the number of galls between clones. Comparison of the developmental time of each gall and insect stage between clones suggests that plant defense mechanisms against L. invasa are activated shortly after oviposition by the wasp, yet before gall formation. CONCLUSION Gall number is an important parameter that should be used to measure host susceptibility among Eucalyptus clones. To the best of our knowledge, this is the first study showing differential morphological responses induced by a galling insect, even before gall formation, revealing differences in susceptibility between different plant hosts. These findings provide insight into the use of early stages of gall formation by L. invasa to prevent invasion and establishment of this pest. |
| Databáze: | OpenAIRE |
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