@misc{10481/73649,
year = {2022},
month = {2},
url = {http://hdl.handle.net/10481/73649},
abstract = {So far the limited knowledge about the diet of omnivores and generalist predators in
olive groves has not allowed the clarification of their role as natural enemies. Stable
isotope (δN15 and δC13) analysis is a useful tool for predicting the trophic position of
a high number of species, the variety of basal resources and the flux of energy in the
food web. We have explored the possible consumers of two important pests in the
olive grove: adults of Prays oleae Bern (Lepidoptera: Praydidae) during its anthophagous
generation and the pupae of Bactrocera oleae (Rossi) (Diptera: Tephritidae). In addition,
we have included in the study the adult instar of the secondary pest Euphyllura
olivina (Costa) (Hemiptera: Psyllidae). These arthropods were clustered in isotopic
groups according to their similarities in δN15 and δC13 content assuming that, in this
case, they shared similar feeding habits. Using this criterion, we obtained eight isotopically
different groups of predators and eleven groups of phytophagous insects.
We have used Bayesian mixing models in order to identify the potential predators
of the different pests included in our study and the proportion that each pest occupied
in the diet of the identified predators. Different taxa of spiders and Anthocoris
nemoralis (Fabricius) (Hemiptera: Anthocoridae) have emerged as potential predators
of B. oleae. Moreover, Gnaphosidae (Araneae) showed suitable isotopic characteristics
to be identified as potential predator of P. oleae and A. nemoralis has been confirmed
as a predator of E. olivina. The presence of E. olivina as an abundant resource encourages
the settlement of natural enemies in olive orchards which feed on this secondary
pest, but are also ready to feed on any insect outbreak, for example P. oleae.},
organization = {European Commission	B-AGR-338-UGR20	
Instituto de Salud Carlos III},
organization = {Spanish Government
European Commission	AGL2009-09878},
organization = {Consejeria de Transformacion Economica, Industria, Conocimiento y Universidades de la Junta de Andalucia	B-AGR-338-UGR20},
publisher = {Wiley},
keywords = {Bactrocera oleae},
keywords = {Euphyllura olivina},
keywords = {Food web},
keywords = {Prays oleae},
keywords = {Predators},
title = {Understanding the trophic relationships amongst arthropods in olive grove by δN15 and δC13 stable isotope analysis},
doi = {10.1111/jen.12986},
author = {Morente, Marina and Ruano Díaz, Francisca Del Carmen},
}