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Chionaspis heterophyllae; Leucopis; Margarodidae; Pinus; biodiversity; biological control; biological control agents; egg production; fecundity; females; honey; insects; life history; pests; phenology; sex ratio; tree health; Australia; Greece
Abstract:
... Neoleucopis kartliana Tanasijtshuk (Diptera, Chamaemyiidae) is the most abundant predator of the giant pine scale (GPS), Marchalina hellenica (Hemiptera, Margarodidae) in Greece. GPS is native to Greece and Turkey, where it is not considered a pest of Pinus spp., but a valuable resource for pine honey production. However, its introduction to new areas leads to high population densities of the scal ...
... Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) is an endemic species of East Asia; it was introduced into Europe in 2007. It has a wide range of hosts as it feeds on over 170 host plant species and significantly impacts crop production. In Greece, H. halys causes significant losses in the production of kiwi, peaches, and green beans; thus, control of this species (including biological control) ...
Centaurea solstitialis; Eustenopus villosus; Larinus; biological control; climate; data analysis; insects; invasive species; plants (botany); steppes; California; Greece; Washington (state)
Abstract:
... A 2-year field study (2014–2015) was conducted to determine the levels of Eustenopus villosus (Boheman) and Larinus curtus (Hochhut) infestation and seed consumption of the invasive plant Centaurea solstitialis L. (Asteraceae: Cardueae) in the steppe of southeastern Washington, USA, a marine-modified continental macroclimate. Mature terminal C. solstitialis flowerheads were collected and dissected ...
... Marchalina hellenica is a sap sucking scale insect endemic to the Aegean basin and it has been introduced to several regions in Greece and Turkey to increase pine honey production. It is also considered as a pest since heavy infestation may leave the host trees vulnerable to secondary pests. An understanding of its natural predators would facilitate planning biocontrol programs. Although there are ...
Agricultural Research Service; Bromus tectorum subsp. tectorum; Stenodiplosis; biological control; biological control agents; genes; grasses; midges; mitochondria; mitochondrial DNA; new species; parasites; phylogeny; taxon descriptions; Bulgaria; Eurasia; Greece; North America
Abstract:
... Cheatgrass is an annual grass species from Eurasia that has become invasive in much of western North America. It has been implicated in recent increases in the frequency, size, and intensity of wildfires, contributing to severe economic, environmental, and social destruction. In order to reduce this damage, the USDA-ARS established a classical biological control program against cheatgrass. In 2018 ...
... In- and out-breeding depressions are commonly observed phenomena in sexually reproducing organisms with a patchy distribution pattern, and spatial segmentation and/or isolation of groups. At the genetic level, inbreeding depression is due to increased homozygosity, whereas outbreeding depression is due to inferior genetic compatibility of mates. Optimal outbreeding theory suggests that intermediat ...
Aganaspis; Bactrocera oleae; Ceratitis capitata; Olea europaea; biological control agents; cultivars; endoparasitoids; females; field experimentation; figs; fruit flies; fruit size; fruits; imagos; insect infestations; insect larvae; instars; laboratory experimentation; magnesium oxide; olives; parasitism; wasps; Greece
Abstract:
... The olive fruit fly Bactrocera oleae (Rossi) (Diptera: Tephritidae) is the major pest of olives worldwide. The figitid wasp, Aganaspis daci (Hymenoptera: Figitidae), is a larval-prepupal endoparasitoid of fruit fly species, and it was found to successfully parasitize medfly larvae in field-infested figs in Greece. To assess the potential of A. daci as a biological control agent against B. oleae, w ...
Dimitrios N. Avtzis; Umar K. Lubanga; Greg K. Lefoe; Raelene M. Kwong; Nikoleta Eleftheriadou; Anneliza Andreadi; Stephen Elms; Richard Shaw; Marc Kenis
... The giant pine scale, Marchalina hellenica Gennadius (Hemiptera: Marchalinidae), is a sap-sucking insect native to South-East Europe that was recently introduced in Australia where it threatens the pine forestry industry. To initiate a classical biological control programme, a literature review and field surveys were carried out in Greece to investigate the natural enemy complex of the scale. Whil ...
... Three Diorhabda spp. tamarisk beetles (Coleoptera: Chrysomelidae) were established in Texas from 2003 to 2010 for biological control of tamarisk (Tamarix spp.): Mediterranean tamarisk beetles, D. elongata (Brullé) from Greece, also established in New Mexico; subtropical tamarisk beetles, D. sublineata (Lucas) from Tunisia; and larger tamarisk beetles, D. carinata (Faldermann) from Uzbekistan. More ...
... Hippodamia variegata is one of the most abundant ladybird species in Greece, preying on several aphid species and other arthropods, of which many are pests of cultivated plants. Imidacloprid, a neonicotinoid insecticide, is commonly used for controlling sucking insects; at the same time, however, it can cause various sub-lethal effects on non-target organisms. The development of IPM programs again ...
... Biological control of agricultural pests relies on knowledge of agroecosystem functionality, particularly when affected by the use of mass‐produced biological agents. Incorporating pre‐ and/or post‐release information such as genetic diversity and structure on these agents using molecular‐based approaches could advance our knowledge of how they perform in agroecosystems. We evaluated the populatio ...
... Sweet chestnut (Castanea sativa Mill.) is an important tree for Greece. The invasive fungus Cryphonectria parasitica, which causes chestnut blight, was first found in Central Greece in 1963. It has since spread all over the country, significantly reducing the national annual nut production. The increasing decline of forests and orchards due to the disease led to a project in 1995, which aimed at s ...
... Several isolates of Parietaria mottle virus (PMoV), a member of the genus Ilarvirus, have been described that affect tomato plants. These isolates, named PMoV‑T, cause rings and a bright necrotic mosaic on young leaves that progresses to necrosis of the leaves, stem and apex. Fruits of affected plants display corky rings and brown patches, which develop into ridges with necrotic scars. The virus h ...
... Silverleaf nightshade (Solanum elaeagnifolium, Cav.) is one of the important invasive plant species in Mediterranean Basin countries. Over the last 60 years, this plant has gone from a few accidental introductions to near monospecific populations in many areas of the Mediterranean Basin (in particular Greece and Morocco). Recent findings from Lebanon show that the invasion is ongoing. Solanum elae ...
... Research on the relationship of the olive agroecosystem biodiversity with farm management and environment is limited, despite the importance of olive production for Mediterranean countries. In this study, we assumed less intensified olive orchard management to enhance soil arthropod community, and farm management and environmental factors to be important drivers shaping it. Soil arthropods were mo ...
... Evaluation of Puccinia crupinae, the causal agent of a rust disease on common crupina (Crupina vulgaris), for biological control is described. Susceptibility of accessions of common crupina that represent both varieties of the target from the five populations in the United States indicate that the disease has potential to control common crupina, but differences were noted between accessions on the ...
... Canada thistle (Cirsium arvense) is one of the worst weeds in temperate areas of the world. A rust fungus, Puccinia punctiformis, was first proposed as a biological control agent for C. arvense in 1893. The rust causes systemic disease which ultimately kills C. arvense plants. In 2013 it was demonstrated in four countries, that inoculation of C. arvense rosettes in the fall with ground telia-beari ...
... Halyomorpha halys was accidentally introduced into Switzerland around 2004 and has recently spread to several additional areas in Europe, with established populations documented in France, Italy, Greece and Hungary. To test whether generalist egg parasitoids of European Pentatomidae have the potential to control H. halys, and whether these could be as effective as their related Asian species, sent ...
... Chestnut blight caused by Cryphonectria parasitica has been one of the major reasons for the decline of chestnut cultivation in Greece over the last 50 years. A previous detailed study of the vc types of the fungus has revealed only four vc types in the entire country, those of EU‐1, EU‐2 and EU‐10 with the dominant being EU‐12 counting for 88% of the isolates. As the loss in orchard trees reached ...
Araneae; Coleoptera; Collembola; Formicidae; agroecological zones; arthropod communities; biogeochemical cycles; biological control; community structure; management systems; olives; orchards; ordination techniques; pest control; production technology; soil arthropods; Crete; Greece
Abstract:
... Soil arthropods were monitored seasonally for one year, in conventional, organic, and integrated olive orchards, located in hilly and plain agroecological zones. A “functional” group of taxa was defined with respect to provision of biological pest control and nutrient cycling services. Comparisons between a) management systems and b) agroecological zones were performed in terms of total abundance, ...
... Canada thistle (Cirsium arvense, CT) is one of the worst weeds in temperate areas of the world. The rust fungus Puccinia punctiformis was first proposed as a biological control agent for CT in 1893. The rust causes systemic disease, is specific to CT, and is in all countries where CT is found. Despite a 120-year lapse since biological control with the rust was proposed, establishment of epiphytoti ...
Castanea; Cryphonectria parasitica; biological control; coppicing; forests; fungi; horticulture; human resources; inoculum; orchards; silvicultural practices; tree age; viruses; Greece
Abstract:
... Since 1963 when chestnut blight was recorded for the first time in Greece, the disease has spread into all 29 chestnut growing prefectures. As a result the national, annual chestnut production was reduced from 18,000 tons in the 1960s to 11,000 tons in 2005. A project for the application of biological control on a nationwide scale was funded and implemented during the period 2007-2009. Hypovirulen ...
... Russian thistle (Salsola tragus, tumbleweed, RT) is a problematic invasive weed in the United States (U.S.) and is a target of biological control efforts. The facultative saprophytic fungus Colletotrichum salsolae (CS) kills RT plants in greenhouse tests and is specific to Salsola spp., which are not native in the U.S. However, the effectiveness of CS in controlling RT has not been previously demo ...
Aceria; Carthamus tinctorius; Centaurea diffusa; Centaurea solstitialis; Cynara cardunculus; annual weeds; artichokes; biological control; biological control agents; bolting; feeds; field experimentation; growth retardation; host plants; host specificity; laboratory experimentation; leaves; mites; Bulgaria; Greece; Italy; Mediterranean region; Turkey (country); United States
Abstract:
... Centaurea solstitialis (yellow starthistle, Asteraceae) is an invasive annual weed in the western USA that is native to the Mediterranean Region and is a target for classical biological control. Aceria solstitialis is an eriophyid mite that has been found exclusively in association with Ce. solstitialis in Italy, Greece, Turkey and Bulgaria. The mite feeds on leaf tissue and damages bolting plants ...
Acarophenacidae; Gynaikothrips ficorum; biological control; new species; Greece
Abstract:
... Adactylidium gynaikothripsin. sp. belonging to the family Acarophenacidae, found in Greece associated with Gynaikothrips ficorum (Marchal), is described and illustrated. A key of the world species of genus Adactylidium is given. The new species may have potential importance in the biological control of this thrip species. ...
... Puccinia jaceae var. solstitialis is an autoecious rust fungus that is native to areas of Afro-Eurasia with a Mediterranean climate. An isolate collected near Sivas, Turkey was released for classical biological control of yellow starthistle (YST), which is an invasive alien weed in California, USA. The fungus has been released throughout California, but long-term establishment rates are generally ...
... Originally from tropical Asia, the Red Palm Weevil (RPW Rhynchophorus ferrugineus (Olivier)) is the most dangerous and deadly pest of many palm trees, and there have been reports of its recent detection in France, Greece and Italy. At present, emphasis is on the development of integrated pest management based on biological control rather than on chemical insecticides, however the success of both s ...
USDA; biological control; ecosystems; farmers; funding; herbicide resistance; indigenous species; international cooperation; invasive species; mycoherbicides; natural enemies; new order; organic production; plant pathogens; rangelands; scientists; turkeys; weed control; weeds; Greece; Russia; Tunisia; United States
Abstract:
... In the U.S., introduced invasive weeds have catastrophic effects on agricultural, aquatic, rangeland, riparian, and natural ecosystems. In the latter three ecosystems the only economically feasible means for controlling these weeds is often classical biological control through the introduction of natural enemies, including plant pathogens, from areas where the weed species are native and naturally ...
... The Mediterranean corn borer, Sesamia nonagrioides (Lefebvre) (Lepidoptera: Noctuidae), is a major pest of maize in the Mediterranean area. Transgenic Bt maize expressing the Cry1Ab toxin from the bacterium Bacillus thuringiensis can effectively control this pest. The characterization of S. nonagrioides population structure, at a large geographical scale, would provide some insight in decision mak ...
P. M. J. Brown; T. Adriaens; H. Bathon; J. Cuppen; A. Goldarazena; T. Hägg; M. Kenis; B. E. M. Klausnitzer; I. Kovář; A. J. M. Loomans; M. E. N. Majerus; O. Nedved; J. Pedersen; W. Rabitsch; H. E. Roy; V. Ternois; I. A. Zakharov; D. B. Roy
Aphidoidea; Harmonia axyridis; biological control; biological control agents; invasive species; Asia; Belgium; Czech Republic; Denmark; France; Great Britain; Greece; Italy; Netherlands; North America; Portugal; Spain; Sweden
Abstract:
... Native to Asia, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) is considered an invasive alien ladybird in Europe and North America, where it was widely introduced as a biological control agent of aphids and coccids. In Europe, H. axyridis was sold by various biological control companies from 1995 in France, Belgium and the Netherlands, and was also intentionally released in at least nine ...
... Castanea sativa, one of the most precious forest trees in Greece, is affected by the spread of chestnut blight all over the country. Identification and mapping of the vegetative compatibility (vc) types of the fungus Cryphonectria parasitica was carried out and the occurrence of hypovirulence was checked. In 11 chestnut populations distributed all over Greece, 627 isolates were obtained and their ...
... The effect of volatiles from cv. Isabella (Vitis labrusca) on the growth of Botrytis cinerea was tested in vitro and in situ, in the latter case on 'Roditis' grapes (V. vinifera), at various temperatures. The goal of the research was to determine whether the volatiles emitted by Isabella grapes could be effective biocontrol agents of Botrytis cinerea. The closed Mariotte system was used as a bioas ...
... Verticillium dahliae antagonistic endorhizosphere bacteria were selected from root tips of tomato plants grown in solarized soils. Fifty-three out of the 435 selected bacterial isolates were found to be antagonistic against V. dahliae and several other soilborne pathogens in dual cultures. Significant biocontrol activity against V. dahliae in glasshouse trials was demonstrated in three of 18 evalu ...
... The root galling index and the densities of eggs in roots and juveniles in soil of the root-knot nematode Meloidogyne javanica (Treub) Chitwood on tomato, and the effect of these on crop yield were assessed in greenhouse experiments applying various treatments at two different sites in Crete, Greece. Tomato crops were grown for four cycles by rotating nematode-resistant (first and third spring cro ...
... Selected isolates of Cladosporium tenuissimum were tested for their ability to inhibit in vitro aeciospore germination of the two-needle pine stem rusts Cronartium flaccidum and Peridermium pini and to suppress disease development in planta. The antagonistic fungus displayed a number of disease-suppressive mechanisms. Aeciospore germination on water agar slides was reduced at 12, 18, and 24 h when ...
... Thistles of the genus Onopordum (Asteraceae: Cardueae) have become serious weed problems in parts of Australia and North America following introduction from their native Eurasian ranges, and are the target of a biological control programme in Australia. This paper analyses the results of three separate surveys of insects feeding and breeding on thistles of the genus Onopordum in the Mediterranean ...