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  • 1
    Online Resource
    Online Resource
    Aphid Parasites (Hymenoptera, Aphidiidae) of the Central Asian Area. (1979)
    Dordrecht :Springer Netherlands,
    Details
    Keywords: Aphidiidae-Asia, Central. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (125 pages)
    Edition: 1st ed.
    ISBN: 9789400996373
    URL: https://ebookcentral.proquest.com/lib/geomar/detail.action?docID=6863976
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Chromatographic properties of macroporous copolymers of 2-hydroxyethyl methacrylate and ethylene dimethacrylate
    Amsterdam : Elsevier
    Journal of Chromatography A 79 (1973), S. 99-105 
    Details
    ISSN: 0021-9673
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0021-9673(01)85278-X
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Chromatographic properties of macroporous copolymers of 2-hydroxyethyl methacrylate and ethylene dimethacrylate
    Amsterdam : Elsevier
    Journal of Chromatography A 79 (1973), S. 99-105 
    Details
    ISSN: 0021-9673
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0021-9673(01)85278-X
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Bounds on food web connectance (reply) (1980)
    [s.l.] : Nature Publishing Group
    Nature 285 (1980), S. 591-592 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] REJMNEK AND STARy REPLY- Pimm is right to suppose that the number of predators and prey per species may be independent of the number of species in the community (or, more precisely, there is a constant mean number of edges per vertex in diagrams of food webs). Unfortunately, this fact can hardly be ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/285591b0
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Connectance in real biotic communities and critical values for stability of model ecosystems (1979)
    [s.l.] : Nature Publishing Group
    Nature 280 (1979), S. 311-313 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A decade ago, most ecologists firmly believed that increased ecosystem complexity (both the number of species and the number of interactions) would lead to greater ecosystem stability. For example, Odum3 suggested that "Higher diversity, then, means longer food chains and more cases of symbiosis ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/280311a0
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Routine alfalfa (Medicago sativa) cutting program and its influence on pea aphid (Acyrthosiphon pisum Harris) populations (1970)
    Springer
    Oecologia 5 (1970), S. 374-379 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary 1. Cutting does not influence the general features of the pea aphid population trends on alfalfa. 2. Cutting significantly influences host plant conditions. 3. By affecting host-plant conditions, cutting may partially influence aphid population density on alfalfa. 4. The plant growth is not always coincident with the increase of aphid numbers. 5. Migration of aphids from alfalfa could have basic disruptive effects on the alfalfa field ecosystem in some years. 6. Routine alfalfa cutting may be partially responsible for a slight increase of the disruptive effect caused to the alfalfa ecosystem stability through mass-migration of aphids. 7. Mass-migration of aphids could possibly negatively influence even the strip-cutting program in certain years, if this program is applied under Central European conditions. 8. Multilateral control approach should be followed. Strip-farming or intercropping of perennial and annual crops should be studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00815501
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Natural enemy spectrum ofAphis spiraephaga (Hom.: Aphididae), an exotic immigrant aphid in Central Europe (1995)
    Springer
    BioControl 40 (1995), S. 29-34 
    Details
    ISSN: 1573-8248
    Keywords: Aphis spiraephaga ; parasitoid ; predator ; ant ; natural enemies ; biological control ; Central Europe
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé L'aire de répartition d'Aphis spiraephaga Müller, puceron originaire d'Asie Centrale, s'est étendue vers l'ouest et a atteint l'Europe centrale probablement avant 1956. Ce puceron est présent maintenant dans tous les pays européens. Les recherches menées en République tchèque, principalement entre 1991 et 1993, ont permis de montrer que ce puceron est attaqué par un complexe d'ennemis naturels comprenant à la fois des parasitoïdes (Aphelinidae, Aphidiidae) et des prédateurs (Anthocoridae, Chrysopidae, Hemerobiidae, Cantharidae, Coccinellidae, Chamaemyidae, Itonididae, Syrphidae). Tous les ennemis naturels ont été identifiés à l'espèce. La présence conjointe de fourmis (Lasius sp.) est fréquemment observée.A. spiraephaga est aussi utilisé avec succès comme hôte-relais de deux parasitoïdes récemment introduits comme auxiliaires (Aphidius colemani Viereck,Lysiphlebus testaceipes Cresson).
    Notes: Abstract Aphis spiraephaga Müller, an aphid of Central Asian origin, dispersed west-wards and reached Central Europe probably before 1956. It now occurs in most European countries. Research undertaken in the Czech Republic mainly in 1991–1993, revealed that the aphid is attacked by a variety of natural enemies, including both parasitoids (Aphelinidae, Aphidiidae) and predators (Anthocoridae, Chrysopidae, Hemerobiidae, Cantharidae, Coccinellidae, Chamaemyidae, Itonididae, Syrphidae). All the natural enemies were identified to species. Attendance by ants (Lasius sp.) was common.A. spiraephaga was also successfully utilised as a new alternate host of two newly introduced parasitoid biocontrol agents (Aphidius colemani Viereck,Lysiphlebus testaceipes (Cresson).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372678
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  • 8
    Electronic Resource
    Electronic Resource
    Aphid parasitoids [Hym.: Aphidiidae, Aphelinidae] from the Yemen Arab Republic (1982)
    Springer
    BioControl 27 (1982), S. 105-108 
    Details
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Quatre espèces de parasitoides provenant de 10 espèces de pucerons nuisibles aux cultures ont été identifiées en Republique Arabe du Yemen.Aphidisu colemani Viereck est l'espèce clé qui comprend la plupart de ces pucerons comme hôtes. La faune de ces parasitoides ressemble étroitement à celle de la région éthiopienne, avec quelques pénétrations d'éléments méditerranéens.
    Notes: Abstract Four parasitoid species on 10 aphid pests have been established in the Yemen Arab Republic. Aphidius colemani Viereck is the key species that includes most of the pest aphid species in its host range. The parasitoid fauna resembles closely that of the Ethiopian region, with some penetration of the Mediterranean elements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02371943
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  • 9
    Electronic Resource
    Electronic Resource
    Some aphid parasites [Hym., Aphidiidae] from Spain (1973)
    Springer
    BioControl 18 (1973), S. 287-290 
    Details
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Trois espèces d'Aphidiides nouvelles pour la faune de l'Espagne sont signalées:Aphidius hieraciorum Starý,Lysiphlebus hispanus Starý, sp. nov. etTrioxys curvicaudus Mackauer.L. hispanus sp. nov. est décrit et illustré; son hôte (unProtaphis vivant surArtemisia) est classé dans le sous-genreAbsinthaphis Remaud., subg. nov. dont la diagnose est donnée.
    Notes: Abstract This paper is a result of identification of aphid parasite material occasionally collected by Prof.G. Remaudière in Spain. Among the four species recognized, three are new to Spain (·) and one of them is a new species of the genusLysiphlebus (L. hispanus Starý). The host of the new species belongs to a new suggenus ofProtaphis: Absinthaphis Remaud. restricted to some steppe species ofArtemisia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02371476
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  • 10
    Electronic Resource
    Electronic Resource
    Lysiphlebus testaceipes, an introduced aphid parasitoid in portugal [Hym.: Aphidiidae] (1988)
    Springer
    BioControl 33 (1988), S. 403-412 
    Details
    ISSN: 1573-8248
    Keywords: Lysiphlebus testaceipes ; Aphis citricola ; aphid parasitoids ; continental Portugal ; Lysiphlebus testaceipes ; Aphis. citricola ; parasitoïdes de puceron ; Portugal continental
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Lysiphlebus testaceipes (Cresson) est un parasitoïde exotique introduit dans le Sud de la France depuis 1973–74, qui a progressivement envahi l'Italie et l'Espagne. Sa présence dans le Sud du Portugal a été signalée en 1985, surAphis nerii Boyer de Fonscolombe. En 1986, il s'étend vers le Nord et on a signalé ce parasitoïde sur plusieurs hôtes, notammentAphis chloris Koch,Aphis citricola van der Goot,Aphis fabae Scopoli,Aphis frangulae Kaltenbach,Aphis gossypii Glover,A. nerii, Aphis parietariae Theobald,Aphis sedi Kaltenbach,Toxoptera aurantii (Boyer de Fonscolombe). En Méditerranée c'est la première fois qu'on rapporte le complet développement et un parasitisme considérable deL. testaceipes surA. citricola. Jusqu'ici on avait observé uniquement un développement incomplet et un pourcentage de parasitisme négligeable (Italie). La liste des hôtes et le développement deL. testaceipes mettent en évidence l'enrichissement du polymorphisme génétique des nouvelles populations. Les relations deL. testaceipes avec les parasitoïdes indigènes indiquent une dominance croissante du parasitoïde exotique.
    Notes: Abstract Lysiphlebus testaceipes (Cresson), an exotic parasitoid species introduced in 1973–74 into southern France and subsequently widespread over the whole mediterranean France, Italy and Spain has become established even in Portugal since 1985. It was found on the southern coast of Portugal parasitizingAphis nerii Boyer de Fonscolombe. In 1986 it spread towards the North, its host range expanded and now includesAphis chloris Koch,Aphis citricola van der Goot,Aphis fabae Scopoli,Aphis frangulae Kaltenbach,Aphis gossypii Glover,A. nerii, Aphis parietariae Theobald,Aphis sedi Kaltenbach,Toxoptera aurantii (Boyer de Fonscolombe). The proved complete development and a high parasitization ofL. testaceipes onA. citricola is the 1st case in the whole Mediterranean, from where only incomplete development and a negligible percentage of parasitization (Italy) have been reported. Both the host range composition and development ofL. testaceipes indicate an increase of genetic polymorphism in the established populations. Interspecific relations ofL. testaceipes and the indigenous parasitoid species indicate an increasing dominance of the exotic biocontrol agent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02373176
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