Biocontrol Science and Technology (2020) 30, 339-350
M. Cristofaro, G. Roselli, F. Marini, E. de Lillo, R.U. Petanovic, B. Vidovic, M. Augé and B.G. Rector (2020)
Open field evaluation of Aculodes altamurgensis, a recently described eriophyid species associated with medusahead (Taeniatherum caput-medusae)
Biocontrol Science and Technology 30 (4), 339-350
Abstract: Medusahead (Taeniatherum caput-medusae, Poales: Poaceae) is an annual grass native to central Asia and the Mediterranean region. It is a noxious, invasive weed in much of western North America. As such, it is the target of a classical biological control programme established by USDA-ARS. During explorations carried out in 2014 a new species of eriophyid mite, Aculodes altamurgiensis de Lillo and Vidovic, 2018 (Acari: Eriophyidae), was discovered on medusahead in southern Italy; it was also collected from medusahead in Bulgaria, Serbia, Turkey, and Iran in subsequent years. In the field A. altamurgensis has consistently been associated with the target weed while never having been detected from sympatric grass (Poales: Poaceae) species (e.g. Stipa austroitalica, Avena sativa, Triticum durum, T. aestivum), suggesting that A. altamurgensis is highly specific to medusahead. An open-field host-specificity test was carried out in Rome, Italy in 2016 in which an Italian population of A. altamurgensis was infested onto 11 different grass genotypes, including five crop species and five different populations of medusahead (two from Italy and three populations that are invasive in the USA). The results supported the previous observations that A. altamurgiensis is highly specific to medusahead and merits further evaluation as a candidate for biological control of this invasive grass. However, the Italian population of A. altamurgiensis showed variable colonisation rates on different medusahead populations, indicating that populations of A. altamurgiensis from other regions should also be tested to determine if they can colonise medusahead at more uniformly high rates, particularly on the targeted invasive populations in the USA.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Francesca Marini, Radmila U. Petanovic, Matthew Auge, Brian G. Rector
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection
non-target effects/fate in environm.
