Field distribution patterns of pests are asymmetrically affected by the presence of other herbivores

Autor: A.A. Paz Neto, José Wagner da Silva Melo, Arne Janssen, Debora B. Lima, M. G. C. Gondim Júnior
Přispěvatelé: Evolutionary and Population Biology (IBED, FNWI)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Bulletin of Entomological Research, 110(5), 611-619. Cambridge University Press
ISSN: 0007-4853
Popis: Because plant phenotypes can change in response to attacks by herbivores in highly variable ways, the distribution of herbivores depends on the occurrence of other herbivore species on the same plant. We carried out a field study to evaluate the co-occurrence of three coconut pests, the mitesAceria guerreronis(Acari: Eriophyidae),Steneotarsonemus concavuscutum(Acari: Tarsonemidae) and the mothAtheloca bondari(Lepidoptera: Pyralidae). The eriophyid miteAc. guerreronisis the most important coconut pest around the world, whereasS. concavuscutumandAt. bondariare economically important only in some areas along the Brazilian coast. A previous study suggested that the necrosis caused byAc. guerreronisfacilitates the infestation ofAt. bondarilarvae. Because all three species infest the area under the perianths on coconuts andS. concavuscutumalso causes necrosis that could facilitateAt. bondari, we evaluated the co-occurrence of all three species. We found that the occurrence ofAt. bondariwas positively associated withAc. guerreronis, but negatively associated withS. concavuscutum. In addition, the two mite species showed negative co-occurrence.Atheloca bondariwas found on nuts of all ages, but more on nuts that had fallen than on those on the trees, suggesting that nuts infested byAt. bondaritend to fall more frequently. We discuss the status ofAt. bondarias a pest and discuss experiments to test the causes of these co-occurrence patterns.
Databáze: OpenAIRE