bluuebunny/crossref_metadata_2025_split huggingface dataset:
Duration of life-cycle of three parasitic hymenoptera on Saissetia oleαe (Bernard) growing on two different host plants.
Authors: Macropodi M.V. 
Published: November 2017

In this work the duration of the life-cycle of Metaphycus helvolus (Comp.) (parasite mainly on the third stage), Μetaphycus affinis stanley (Comp.) (parasite mainly on the third stage) and Μetaphycus lounsburyi (How.) (parasite mainly on the fourth stage) (Hymenoptera: Encyrtidae) on S. οleae, developed on different substrates, i.e. potato sprouts and plants of Nerium oleander, under laboratory conditions was determined. Among the Hymenoptera parasitizing S. oleae on Corfu, M, helvolus and M. lounsburyi, are of particular importance M. affinis stanley was introduced in Corfu in 1976 and despite the fact that the population of S. οleae in the release area was practically eliminated from other factors shortly after the release of the parasite, there is evidence that the parasite was finally established. The above parasites can be successfully reared on S. οleae developed both on potato sprouts and Nerium oleander. The study was carried out at 23±1°C, 65-70% R.H. and 12 hours of artificial light per day. For each species, 3 potato sprouts and three plants of Nerium oleander in pots infested with S. οleae were placed in each 60X30X40 cm cage. The host insects were oviposited in by adult parasites introduced into the cages and left there for two days. The number of emerging adult parasites in each cage was recorded daily (a total number of adults emerged per cage varied from 23 to 195) and the time taken for 50% emergence was calculated from the correlation equation by plotting the cumulative percentage of adults emerged against time. For M. helvolus the mean duration time of the life cycle was estimated to be 19.4 days on scales developed on potato sprouts and 15.1 days on scales developed on N. oleander. For M. affinis stanley the relevant estimates were 18.8 days and 23.4 days, respectively, while for M. lounsburvi the estimates were 21.3 and 18.6 days, respectively. For M. helvolus and M. lounsburyi the duration of the life cycle was shorter when the host insect developed on Nerium plants than on potato sprouts. For M. affinis stanley the reverse was true. These differences show the effect of the host of S. oleae on the time of development of the parasites, possibly reflecting the differences of the scale insect developed on different hosts as food quality for the parasites.
Effectiveness of Bacillus thuringiensis Berliner var. kurstaki on the grape berry moth Lobesia botrana Den. and Shiff. (Lepidoptera, Tortricidae) under field and laboratory conditions in Crete
Authors: Roditakis Ν.Ε. 
Published: November 2017

The effectiveness of Bacillus thuringiensis Berliner var. kurstaki (Dipel Abbot Lab.) against the grape berry moth (Lobesia botrana Den. & Shiff.) was evaluated under laboratory and field conditions. Under laboratory conditions (24±0.5°C, 55±5% r.h., 2,000 Lux, and 16 hours light daily) B. thuringiensis was compared to triflumuron and methomyl on egg hatching and shallow entries per grape berry. B. thuringiensis had no effect on egg hatching while methomyl and triflumuron had ovicidal action. Shallow entries per grape berry were 0.9-1, 0, 0 and 4.55 for B. thuringiensis, triflumuron, methomyl and control, respectively. Under field conditions, using as criteria for the timing of sprays: a. pheromone and food trap catches and b. visual counting of egg laying and a threshold of 20-30 eggs/100 grapes, two applications of B. thuringiensis at Kastelli Pediados in 1981 and four at Peza in 1982 were made both at the 2nd and 3rd flights. Its effectiveness was 96-100% and 92% at Kastelli Pediados and 73-75% at Peza.
The genus Brevipalpus in Greece (Acari: Tenuipalpidae)
Authors: Hatzinikolis E.N. 
Published: November 2017

The genus Brevipalpus from Greece is revised and a key to 18 species is provided, with illustrations of the nymphs. Twelve species were formerly recorded: B. atalantae (Hatzinikolis), B. californicus (Banks), B. chalkidicus (Hatzinikolis), B. hellenicus (Hatzinikolis and Kolovos), B. lewisi McGregor, B. macedonicus (Hatzinikolis), B. obovatus Donnadieu, B. oicac Baker, B. olearius Sayed, B. olivicola (Pegazzano and Castagnoli), B. phoenicis (Geijskes) and B. russulus (Boisduval). The following six species are now recorded for the first time from Greece: B. cuneatus (Canestrini and Fanzago), B. essigi Baker, B. filium Baker, B. mallorquensis Pritchard and Baker, B. pini Baker and B. sayedi Baker. A review of hosts, distribution and economic importance is presented for each species.
Panonychus citri (MacGregor) (Tetranychidae) and Eriophyes medicaginis K. (Eriophyidae): Two important phytophagous mites recorded for the first time in Greece
Authors: Emmanouel N.G. , Papadoulis G.TH. 
Published: November 2017

Panonychus cirri (MacGregor) one of the most important phytophagous mites in many parts of the world, has been collected from citrus trees in various localities of county Preveza, Heperos, Greece. This mite has been, possibly, introduced to Greece via Albania. Another phytophagous mite, Eriophyes medicaginis Keifer, well known to cause witches’ broom on alfalfa, has been collected from Medicago saliva L. in the counties Attiki and Boiotia of central Greece. In a two year study on arthropods associated with alfalfa at the Kopafs region of Boiotia, E. medicaginis was found to be constant and recedent in both years. High population densities were observed during the period mid-September to mid-March.
Induction of dormancy in Lobesia botrana by long day and high temperature conditions
Authors: Tzanakakis Μ. Ε. , Savopoulou-Soultani Μ. , Oustapassidis C. S. , Verras S.C. , Hatziemmanouel Η. 
Published: November 2017

Lobesia botrana (Denis and Schiffermueller) (Lepidoptera: Tortricidae) is known to enter a facultative autumnohibernal diapause-mediated dormancy in the pupal stage, when the embryonic and early larval stages are exposed to short-day photo-periods. Yet, in a laboratory stock originating from northern Greece and reared for years on an artificial larval diet, dormancy occurred also under a long-day photo-period. When the eggs were incubated at 30oC in the dark or at 26 oC under the natural daylength of August in northern Greece, and the larvae grew at L:D 16:8 and 25-26 oC, but not 20 oC, a substantial percentage of the pupae entered dormancy. This dormancy seems to be diapause-mediated. It is not known whether it is a typical summer diapause.
Host specificity of Aceria centaureae (Nalepa), a candidate for biological control of Centaurea dίffusa De Lamarck
Authors: Sobhian R. , Katsouannos Β. Ι. , Kashefi J. 
Published: November 2017

Filed collected rosettes or twigs of Centaurea diffusa De Lamarck, infested by the gall mite Aceria centaureae, were fixed onto appropriately grown and planted test plants of ten different species in the area of Thessaloniki, Greece, in 1985 and 1986. The test plants were inspected for presence of galls and mites a few to several days after their contact with the infested twigs. Gall formation occurred on all of the Centaurea diffusa test plants, either of Greek or U.S. origin, and on some of the Centaurea solstitialis, L. test plants. No galls or other mite damage could be found on the other test plants, which were Carthamus tinctorius L. (safflower), Cirsiton creticion (De Lamarck) D’Urville, of local origin and six Cirsium species of U.S. origin, i.e. cymosum (Greene) J. T. Howell, occidentals (Nutt) Jeps., pastoris Howell, andersonii (Gray) Petrak, brevistylum Crong; and undulation (Nutt.) Spreng. These results suggest that A. centaureae most probably has a very restricted host plant range, feeding only on weedy Centaurea spp. Thus the mite should be considered as a possible candidate for biological control of diffuse knapweed in the U.S.A. and Canada.
Development and reproduction of Lobesia botrana on vine and olive inflorescences
Authors: Savopoulou- Soultani Μ. , Stavridis D.G. , Tzanakakis Μ.Ε. 
Published: November 2017

Grape vine (Vilis vinifera F.) inflorescences were caged in a bag of organdy in the field, and artificially infested with 15 neonate larvae of Lohesia botrana (Denis and Schiffermueller) (Lepidoptera: Tortricidae). Olive twigs, each bearing 5 pairs of inflorescences were caged likewise. In laboratory experiments 15 neonate larvae were placed in each Petri dish containing one vine inflorescence or an olive twig bearing two pairs of inflorescences. Three stages of inflorescence development were used, an early, an intermediate and a late one. Larvae, pupae and adults were maintained at L:D 16:8 and 24″:22°C. In the field, when comparing inflorescences of the earliest developmental stage, the rate of larval development was significantly faster on olive than on vine inflorescences. In the laboratory, when comparing inflorescences of similar developmental stages, the rate of larval development on olive inflorescences was significantly faster than that on vine inflorescences. Pupae of both sexes were significantly heavier on olive inflorescences in all the cases in the laboratory, but in only some cases in the field. In the field the number of eggs per female and the coefficient of multiplication of the insect’s population from generation to generation were greater on olive (102.6 and 3.8 respectively) than on vine inflorescences (81.7 and 2.9). In the laboratory, the respective values were 118.5 and 12.3 on olive, and 90.2 and 4.9 on vine inflorescences. In two-choice tests in the laboratory, vine inflorescences were preferred for oviposition to olive inflorescences and to vine or olive leaves. In no-choice tests, vine leaves, vine inflorescences, olive leaves and olive inflorescences in the least advanced stage, were all equally accepted for oviposition.
Effect of Methoprene on larval and cocoon weight, ovariole length, egg number and fecundity of Bombyx mori L
Authors: Magadum S.B. , Hooli Μ.Α. , Magdum V.B. 
Published: November 2017

The effect of Methoprene on larval and cocoon weight, ovariole length, egg number and fecundity of BombYx mori (Polyvoltine Pure Mysore breed) was stu­died. Methoprene at 2.75,4.0 and 8.0 pg!ml dilutions was topically applied/sprayed on silkworm larvae repeatedly at 36h in 3rd, 4th and 5th stadium, at 48h in 4th and 5th stadium and singly at 72h in 5th stadium. Of the various dosages used, the repeated applications of 2.75 pg/ml at 36h in 3rd, 4th and 5th stadium of silkworm larvae resulted in significant increase in larval weight, cocoon weight, ovariole length, ovariole egg number and fecundity when compared to untreated controls.
Seasonal abundance of Acyrthosiphon pisum (Harris) (Homoptera: Aphididae) and Therioaphis trifolii (Monell) (Homoptera: Gal1aphididae) on lucerne in Central Greece
Authors: Lykouressis D.P. , Polatsidis CH. Ρ. 
Published: November 2017

Acyrthosiphon pisum (Harris) and Therioaphis trifolii (Monell) were the most abundant aphid species on lucerne at Kopais, Co. Boiotia in central Greece from April 1984 to November 1986. Population fluctuations for A. pisum showed two peaks, the first during April-May and the second in November. Low numbers or zero were found during summer and till mid October as well as during winter and March. The abundance of this species during the year agrees generally with the effects of prevailing temperatures in the region on aphid development and reproduction. T. trifolii also showed two population peaks but at different periods. The first occurred in July and the second from mid September to mid October. The first peak was higher than the second. The sharp decline in population densities that occurred in early August and lasted till mid September is not accounted for by adverse climatic conditions, but natural enemies and/or other limiting factors are possibly respon­sible for that population reduction. Numbers were zero from December till March, while they kept at low levels during the rest of spring and part of June as well as from mid October till the end of November.
Distribution en Grece des genres Archanara et Nonagria
Authors: Galichet P.F. , Tsitsipis J.A. , Alexandri Μ.Ρ. 
Published: November 2017

Quatre prospections faunistiques (1985-1988-1989-1990) on ete realises dans les biotopes humides de la Thrace au Peloponnese: des larves d’ Archanara geminipuncta ont ete collectees dans les roselieres depuis le delta de l’Evrous jusqu’en Grece centrale et occidentale dans 12 stations sur 15. Les especes A. sparganii et N. typhae on ete retrouvees dans le typhetum, depuis le delta de l’Evrous jusqu’a Salonique puis dans l’ile d’Eubιe et le nord du Peloponnese pour la seconde. L’espece A. dissoluta fut collectee en 1 seul exemplaire. La limite meridionale de ces especes en Grece centrale ne parait pas tres eloignιe du 39eme parallele. Leurs distributions sont discutees en fonction des temperatures maximales estivales. Un parasitoοde commun aux 4 especes phytophages, Lydella thompsoni (Diptera: Tachinidae) a ete egalement observe.
Flight Period of Phαenops knoteki and Acαnthocinus reticulαtus
Authors: Markalas S. 
Published: November 2017

The flight period of Phaenops knoteki (Coleoptera: Buprestidae) was extended front the end of May until the middle of August and Chat one of Acanthocinus reticulatus (Coleoptera, Cerambycidae) front middle of June until middle of September.
Sites and Time of Oviposition of Euphyllura phillyreae Foerster on Olive Trees and οon Phillyrea latifolia
Authors: Prophretou-Athanasiadou D.A. , Tzanakakis M.E 
Published: November 2017

The distribution of eggs of Euphyllura phillyreae Foerster (Homoptera: Aphalaridae) was recorded on twigs of olive trees and of Phillyrea latifolia L. in various locations of the Thessaloniki and Halkidiki prefectures of coastal northern Greece. On olive, the first eggs were observed in the last ten days of March and oviposition was intensified and became abundant only when the apical bud and the axillary leaf and flower buds started to swell. Eggs were laid mostly on swollen buds and on developing inflorescences. Oviposition preference was related to the stage of development of a bud and not to its location on the olive twig. On swollen leaf buds, most eggs were laid on the inner (upper) surface of the middle (second) pair of developing leaves, and fewer on the inner surface of the outer (first) pair and on the innermost (third) pair of leaves. On Phillyrea, eggs were deposited much earlier than on olive, on developing inflorescences. In choice and no-choice laboratory experiments, more eggs were laid on olive twigs bearing developing inflorescences, fewer eggs on twigs bearing only swollen terminal or axillary buds, and no eggs at all on twigs with only fully developed leaves of the previous year.
Effect of SSP – 11 on Weight and Tissue Composition of 4th Instar Larvae of Silkworm, Bombyx mori
Authors: Υenkata Rami Reddy K. , Sashindran Nair K. , Magadum S. Β. , Datta R. Κ. 
Published: November 2017

The anti-juvenoid, SSP-11 ((E) 4-chloro-a, a, a-trifluro-N [ 1 (1 H-imidazole- 1 –y1)- 2-propoxy ethylyledene] O, toludine) was used to induce trimoulters from tetramoulter larvae of the silkworm, Bombyx mori (race NB7). The compound was fed for two days through an artificial diet at the concentration of 200 ppm to newly ecdysed 4th stadium larvae. Body and silkgland fresh weight were recorded daily in the 4th larval stadium and protein profiles of haemolymph, fat body and silkgland were determined at the end of the stadium. In larvae treated with SSP-11, feeding period in stadium 4 was prolonged by 3-4 days and 80-85% of the larvae started to spin as trimoulters. Eight and thirty fold increases in the larval body and silkgland weights respectively were the result of SSP-11. Further, total proteins, total carbohydrates, glycogen and nucleic acid (DNA & RNA) also increased. The activity levels of alanine aminotransferase and aspartate aminotransferasc increased significantly than in the control indicating increased mobilization of aminoacids into transamination activities.
The Use of Chemicals with Specific Mode of Action in an Integrated Control Program on Eggplant for the Greenhouse Whitefly, Triαleurodes vαporαriorum
Authors: Abdalla Safel Dawla , Michelakis S. 
Published: November 2017

In the unheated plastic greenhouses of Crete, the control of the greenhouse whitefly Trialeurodes vaporariorum Westwood using chemicals is usually needed during winter time. The systemic insecticide Vydate when applied as soil granules at the highest dose (2g/plant), gave protection for young eggplants against whitefly for a period of 5 weeks. Experiment with different chemicals showed that the new insect growth regulator Nomolt, is fairly effective in controlling the greenhouse whitefly when used in combination with Actellic. It gave equally good results when compared with a mixture of Applaud and Actellic.
The effect of C6- to CIO- fatty acids on larval growth and survival of the olive fruit fly Bactrocera oleae (Diptera: Tephritidae)
Authors: Manoukas A. G. 
Published: November 2017

The effects of caproic (C6), amino caproic (C6), caprylic (C8) and cupric (CIO) acid on larval performance of the olive fruit fly, Bactrocera oleae (Gmelin) (Diptera: Tephritidae) were investigated. The acids were added to an artificial larval diet at four different concentration levels, during the mixing of its ingredients. Eggs obtained from a colony of olive fruit flies were placed on these diets and on the control. caproic acid depressed significantly egg hatchability, larval survival and larval weight at the dietary level of 0.05 and 0.1 %. In addition, it did not permit eggs to hatch at the level of 0.2%. On the contrary, aminocaproic acid did not depress any of the parameters recorded up to the level of 0.2%. The levels of 0.4 to 1.6% depressed larval survival larval growth and pupal weight and the level of 3.2% did not permit larvae to survive. caprylic acid depressed significantly hatchability, larval survival and number of pupae/g diet at the level of 0.0125% and gave no pupae at the level of 0.1%. Finally cupric acid depressed egg hatchability, larval survival and larval weight from the level of 0.05% and gave no pupae at the level of 0.2%, Adult emergence was not affected by any of the acids tested.
Entomopathogens of Anαcridium αegyptium L. in Crete
Authors: Roditakis Ν. Ε. , Kollaros D. , Legakis Α. 
Published: November 2017

The entomopathogenic fungus Beauveria bassiana (Bals.) Vuil. was recorded for the first time on Anacridium aegyptium L. in Crete. The insects were fed on pieces of leaf subjected to a serial dilution of spores over three to four orders of magnitute. Comparative studies on the virulence of B. bassiana (I 91612 local isolate) and Metarhizium anisopliae var. acridum (IMI 330189 standard isolate of IIBC) showed that M. anisopliae var. acridum was more virulent than B. bassiana at a conidial concentration lower or equal to 106 per ml while they were similarly virulent on first stage nymphs at 107 conidia per ml.
The decision to delivery interval in emergency caesarean sections: Impact of anaesthetic technique and work shift
Authors: Hein Anette , Thalen David , Eriksson Ylva , Jakobsson Jan G. 
Published: November 2017

Background: One important task of the emergency anaesthesia service is to provide rapid, safe and effective anaesthesia for emergency caesarean sections (ECS). A Decision to Delivery Interval (DDI) <30 minutes for ECS is a quality indicator for this service. The aim of this study was to assess the DDI and the impact of chosen anaesthetic technique (general anaesthesia (GA), spinal anaesthesia (SPA) with opioid supplementation, or “top-up” of labour epidural analgesia (tEDA) with local anaesthesia and fentanyl mixture) and work shift for ECS at Danderyds Hospital, Sweden. Methods: A retrospective chart review of ECS at Danderyds Hospital was performed between January and October 2016. Time between decision for CS, start of anaesthesia, time for incision and delivery, type of anaesthetic technique, and time of day, working hours or on call and day of week, Monday – Friday, and weekend was compiled and analysed. Time events are presented as mean ± standard deviation. Non-parametric tests were used. Results: In total, 135 ECS were analysed: 92% of the cases were delivered within 30 minutes and mean DDI for all cases was 17.3±8.1 minutes. GA shortened the DDI by 10 and 13 minutes compared to SPA and tEDA (p<0.0005). DDI for SPA and tEDA did not differ. There was no difference in DDI regarding time of day or weekday. Apgar <7 at 5’ was more commonly seen in ECS having GA (11 out of 64) compared to SPA (2/30) and tEDA (1/41) (p<0.05). Conclusion: GA shortens the DDI for ECS, but the use of SPA as well as tEDA with opioid supplementation maintains a short DDI and should be considered when time allows. Top-up epidural did not prolong the DDI compared to SPA. The day of week or time of ECS had no influence on the anaesthesia service as measured by the DDI.
Rising Prices Under Declining Preferences: The Case of the U.S. Print Newspaper Industry
Authors: Pattabhiramaiah Adithya , Sriram S. , Sridhar Shrihari 
Published: November 2017

Between 2006 and 2011, daily print newspapers in the United States lost 20% of their paid subscribers, partly because of the increasing availability of alternative sources of news, such as free content provided on newspaper websites and by news aggregators such as Yahoo. However, contrary to the expectation that firms respond to softening demand by lowering prices, newspapers increased subscription prices by 40%–60% during this period. In this paper, we explain and quantify the factors responsible for these price increases. We calibrate models of readership and advertising demand using data from a top-50 U.S. regional print newspaper. Conditional on these demand models, we calibrate the newspaper’s optimal pricing equations and assess whether the increases in subscription prices are mainly rationalized by (a) the decline in overall reader willingness to pay (WTP) in the presence of heterogeneity among subscribers, which rendered it optimal for the newspaper to focus on the high WTP readers, or (b) the newspaper’s reduced incentive to subsidize readers at the expense of advertisers, because of softening demand for newspaper advertising. We find that the decline in the ability of the newspaper to subsidize readers by extracting surplus from advertisers explains most of the increase in subscription prices. Of the three available subscription options (daily, weekend, and Sunday only), subscription prices increased more steeply for the daily option, a pattern consistent with the view that newspapers are driving away low valuation weekday readers while preserving Sunday readership and the corresponding ad revenues. Thus, our research augments theoretical propositions in two-sided markets by providing a formal empirical approach to unraveling the relative importance of the roles played by agents on the subsidy and demand sides in determining prices. Data and the online appendix are available at https://doi.org/10.1287/mksc.2017.1060 .