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  Subjects -> BIOLOGY (Total: 3126 journals)
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BIOTECHNOLOGY (236 journals)                  1 2 | Last

Showing 1 - 200 of 239 Journals sorted alphabetically
3 Biotech     Open Access   (Followers: 8)
Advanced Biomedical Research     Open Access  
Advances in Bioscience and Biotechnology     Open Access   (Followers: 16)
Advances in Genetic Engineering & Biotechnology     Hybrid Journal   (Followers: 7)
Advances in Regenerative Medicine     Open Access   (Followers: 2)
African Journal of Biotechnology     Open Access   (Followers: 6)
Algal Research     Partially Free   (Followers: 11)
American Journal of Biochemistry and Biotechnology     Open Access   (Followers: 66)
American Journal of Bioinformatics Research     Open Access   (Followers: 7)
American Journal of Polymer Science     Open Access   (Followers: 32)
Anadolu University Journal of Science and Technology : C Life Sciences and Biotechnology     Open Access  
Animal Biotechnology     Hybrid Journal   (Followers: 8)
Annales des Sciences Agronomiques     Full-text available via subscription  
Applied Biochemistry and Biotechnology     Hybrid Journal   (Followers: 43)
Applied Biosafety     Hybrid Journal  
Applied Food Biotechnology     Open Access   (Followers: 3)
Applied Microbiology and Biotechnology     Hybrid Journal   (Followers: 64)
Applied Mycology and Biotechnology     Full-text available via subscription   (Followers: 4)
Arthroplasty Today     Open Access   (Followers: 1)
Artificial Cells, Nanomedicine and Biotechnology     Hybrid Journal   (Followers: 1)
Asia Pacific Biotech News     Hybrid Journal   (Followers: 2)
Asian Journal of Biotechnology     Open Access   (Followers: 9)
Asian Pacific Journal of Tropical Biomedicine     Open Access   (Followers: 2)
Australasian Biotechnology     Full-text available via subscription   (Followers: 1)
Banat's Journal of Biotechnology     Open Access  
BBR : Biochemistry and Biotechnology Reports     Open Access   (Followers: 5)
Beitr?ge zur Tabakforschung International/Contributions to Tobacco Research     Open Access   (Followers: 2)
Bio-Algorithms and Med-Systems     Hybrid Journal   (Followers: 2)
Bio-Research     Full-text available via subscription   (Followers: 3)
Bioactive Materials     Open Access   (Followers: 1)
Biocatalysis and Agricultural Biotechnology     Hybrid Journal   (Followers: 4)
Biocybernetics and Biological Engineering     Full-text available via subscription   (Followers: 5)
Bioethics UPdate     Hybrid Journal   (Followers: 1)
Biofuels     Hybrid Journal   (Followers: 11)
Biofuels Engineering     Open Access   (Followers: 1)
Biological & Pharmaceutical Bulletin     Full-text available via subscription   (Followers: 4)
Biological Cybernetics     Hybrid Journal   (Followers: 10)
Biomarkers and Genomic Medicine     Open Access   (Followers: 3)
Biomarkers in Drug Development     Partially Free   (Followers: 1)
Biomaterials Research     Open Access   (Followers: 4)
BioMed Research International     Open Access   (Followers: 4)
Biomédica     Open Access  
Biomedical and Biotechnology Research Journal     Open Access  
Biomedical Engineering Research     Open Access   (Followers: 6)
Biomedical Glasses     Open Access  
Biomedical Reports     Full-text available via subscription  
BioMedicine     Open Access  
Biomedika     Open Access  
Bioprinting     Hybrid Journal   (Followers: 1)
Bioresource Technology Reports     Hybrid Journal   (Followers: 1)
Bioscience, Biotechnology, and Biochemistry     Hybrid Journal   (Followers: 21)
Biosensors Journal     Open Access  
Biosimilars     Open Access   (Followers: 1)
Biosurface and Biotribology     Open Access  
Biotechnic and Histochemistry     Hybrid Journal   (Followers: 1)
BioTechniques : The International Journal of Life Science Methods     Full-text available via subscription   (Followers: 28)
Biotechnologia Acta     Open Access   (Followers: 1)
Biotechnologie, Agronomie, Société et Environnement     Open Access   (Followers: 2)
Biotechnology     Open Access   (Followers: 6)
Biotechnology & Biotechnological Equipment     Open Access   (Followers: 4)
Biotechnology Advances     Hybrid Journal   (Followers: 33)
Biotechnology and Applied Biochemistry     Hybrid Journal   (Followers: 44)
Biotechnology and Bioengineering     Hybrid Journal   (Followers: 154)
Biotechnology and Bioprocess Engineering     Hybrid Journal   (Followers: 5)
Biotechnology and Genetic Engineering Reviews     Hybrid Journal   (Followers: 13)
Biotechnology and Health Sciences     Open Access   (Followers: 1)
Biotechnology and Molecular Biology Reviews     Open Access   (Followers: 2)
Biotechnology Annual Review     Full-text available via subscription   (Followers: 5)
Biotechnology for Biofuels     Open Access   (Followers: 10)
Biotechnology Frontier     Open Access   (Followers: 2)
Biotechnology Journal     Hybrid Journal   (Followers: 16)
Biotechnology Law Report     Hybrid Journal   (Followers: 4)
Biotechnology Letters     Hybrid Journal   (Followers: 34)
Biotechnology Progress     Hybrid Journal   (Followers: 40)
Biotechnology Reports     Open Access  
Biotechnology Research International     Open Access   (Followers: 1)
Biotechnology Techniques     Hybrid Journal   (Followers: 10)
Biotecnología Aplicada     Open Access  
Bioteknologi (Biotechnological Studies)     Open Access  
BIOTIK : Jurnal Ilmiah Biologi Teknologi dan Kependidikan     Open Access  
Biotribology     Hybrid Journal   (Followers: 1)
BMC Biotechnology     Open Access   (Followers: 16)
Cell Biology and Development     Open Access  
Chinese Journal of Agricultural Biotechnology     Full-text available via subscription   (Followers: 4)
Communications in Mathematical Biology and Neuroscience     Open Access  
Computational and Structural Biotechnology Journal     Open Access   (Followers: 2)
Computer Methods and Programs in Biomedicine     Hybrid Journal   (Followers: 8)
Copernican Letters     Open Access   (Followers: 1)
Critical Reviews in Biotechnology     Hybrid Journal   (Followers: 20)
Crop Breeding and Applied Biotechnology     Open Access   (Followers: 3)
Current Bionanotechnology     Hybrid Journal  
Current Biotechnology     Hybrid Journal   (Followers: 4)
Current Opinion in Biomedical Engineering     Hybrid Journal   (Followers: 1)
Current Opinion in Biotechnology     Hybrid Journal   (Followers: 56)
Current Pharmaceutical Biotechnology     Hybrid Journal   (Followers: 9)
Current Research in Bioinformatics     Open Access   (Followers: 12)
Current Trends in Biotechnology and Chemical Research     Open Access   (Followers: 3)
Current trends in Biotechnology and Pharmacy     Open Access   (Followers: 8)
EBioMedicine     Open Access  
Electronic Journal of Biotechnology     Open Access  
Entomologia Generalis     Full-text available via subscription  
Environmental Science : Processes & Impacts     Full-text available via subscription   (Followers: 4)
Experimental Biology and Medicine     Hybrid Journal   (Followers: 3)
Folia Medica Indonesiana     Open Access  
Food Bioscience     Hybrid Journal  
Food Biotechnology     Hybrid Journal   (Followers: 9)
Food Science and Biotechnology     Hybrid Journal   (Followers: 8)
Frontiers in Bioengineering and Biotechnology     Open Access   (Followers: 6)
Frontiers in Systems Biology     Open Access   (Followers: 2)
Fungal Biology and Biotechnology     Open Access   (Followers: 2)
GM Crops and Food: Biotechnology in Agriculture and the Food Chain     Full-text available via subscription   (Followers: 1)
GSTF Journal of BioSciences     Open Access  
HAYATI Journal of Biosciences     Open Access  
Horticulture, Environment, and Biotechnology     Hybrid Journal   (Followers: 11)
IEEE Transactions on Molecular, Biological and Multi-Scale Communications     Hybrid Journal   (Followers: 1)
IET Nanobiotechnology     Hybrid Journal   (Followers: 2)
IIOAB Letters     Open Access  
IN VIVO     Full-text available via subscription   (Followers: 4)
Indian Journal of Biotechnology (IJBT)     Open Access   (Followers: 2)
Indonesia Journal of Biomedical Science     Open Access   (Followers: 2)
Indonesian Journal of Biotechnology     Open Access   (Followers: 1)
Indonesian Journal of Medicine     Open Access  
Industrial Biotechnology     Hybrid Journal   (Followers: 17)
International Biomechanics     Open Access  
International Journal of Bioinformatics Research and Applications     Hybrid Journal   (Followers: 13)
International Journal of Biomechatronics and Biomedical Robotics     Hybrid Journal   (Followers: 4)
International Journal of Biomedical Research     Open Access   (Followers: 2)
International Journal of Biotechnology     Hybrid Journal   (Followers: 5)
International Journal of Biotechnology and Molecular Biology Research     Open Access   (Followers: 3)
International Journal of Biotechnology for Wellness Industries     Partially Free   (Followers: 1)
International Journal of Environment, Agriculture and Biotechnology     Open Access   (Followers: 5)
International Journal of Functional Informatics and Personalised Medicine     Hybrid Journal   (Followers: 4)
International Journal of Medicine and Biomedical Research     Open Access   (Followers: 1)
International Journal of Nanotechnology and Molecular Computation     Full-text available via subscription   (Followers: 3)
International Journal of Radiation Biology     Hybrid Journal   (Followers: 4)
Iranian Journal of Biotechnology     Open Access  
ISABB Journal of Biotechnology and Bioinformatics     Open Access  
Italian Journal of Food Science     Open Access   (Followers: 1)
JMIR Biomedical Engineering     Open Access  
Journal of Biometrics & Biostatistics     Open Access   (Followers: 3)
Journal of Bioterrorism & Biodefense     Open Access   (Followers: 6)
Journal of Petroleum & Environmental Biotechnology     Open Access   (Followers: 1)
Journal of Advanced Therapies and Medical Innovation Sciences     Open Access  
Journal of Advances in Biotechnology     Open Access   (Followers: 5)
Journal Of Agrobiotechnology     Open Access  
Journal of Analytical & Bioanalytical Techniques     Open Access   (Followers: 7)
Journal of Animal Science and Biotechnology     Open Access   (Followers: 4)
Journal of Applied Biomedicine     Open Access   (Followers: 2)
Journal of Applied Biotechnology     Open Access   (Followers: 2)
Journal of Applied Biotechnology Reports     Open Access   (Followers: 2)
Journal of Applied Mathematics & Bioinformatics     Open Access   (Followers: 5)
Journal of Biologically Active Products from Nature     Hybrid Journal   (Followers: 1)
Journal of Biomaterials and Nanobiotechnology     Open Access   (Followers: 6)
Journal of Biomedical Photonics & Engineering     Open Access  
Journal of Biomedical Practitioners     Open Access  
Journal of Bioprocess Engineering and Biorefinery     Full-text available via subscription  
Journal of Bioprocessing & Biotechniques     Open Access  
Journal of Biosecurity Biosafety and Biodefense Law     Hybrid Journal   (Followers: 3)
Journal of Biotechnology     Hybrid Journal   (Followers: 64)
Journal of Biotechnology and Strategic Health Research     Open Access  
Journal of Chemical and Biological Interfaces     Full-text available via subscription   (Followers: 1)
Journal of Chemical Technology & Biotechnology     Hybrid Journal   (Followers: 9)
Journal of Chitin and Chitosan Science     Full-text available via subscription   (Followers: 1)
Journal of Colloid Science and Biotechnology     Full-text available via subscription  
Journal of Commercial Biotechnology     Full-text available via subscription   (Followers: 6)
Journal of Crop Science and Biotechnology     Hybrid Journal   (Followers: 3)
Journal of Essential Oil Research     Hybrid Journal   (Followers: 2)
Journal of Experimental Biology     Full-text available via subscription   (Followers: 25)
Journal of Genetic Engineering and Biotechnology     Open Access   (Followers: 5)
Journal of Ginseng Research     Open Access  
Journal of Industrial Microbiology and Biotechnology     Hybrid Journal   (Followers: 17)
Journal of Integrative Bioinformatics     Open Access  
Journal of Medical Imaging and Health Informatics     Full-text available via subscription  
Journal of Molecular Biology and Biotechnology     Open Access  
Journal of Molecular Microbiology and Biotechnology     Full-text available via subscription   (Followers: 11)
Journal of Nano Education     Full-text available via subscription  
Journal of Nanobiotechnology     Open Access   (Followers: 4)
Journal of Nanofluids     Full-text available via subscription   (Followers: 1)
Journal of Organic and Biomolecular Simulations     Open Access  
Journal of Plant Biochemistry and Biotechnology     Hybrid Journal   (Followers: 4)
Journal of Science and Applications : Biomedicine     Open Access  
Journal of the Mechanical Behavior of Biomedical Materials     Hybrid Journal   (Followers: 12)
Journal of Trace Elements in Medicine and Biology     Hybrid Journal   (Followers: 1)
Journal of Tropical Microbiology and Biotechnology     Full-text available via subscription  
Journal of Yeast and Fungal Research     Open Access   (Followers: 1)
Marine Biotechnology     Hybrid Journal   (Followers: 4)
Meat Technology     Open Access  
Messenger     Full-text available via subscription  
Metabolic Engineering Communications     Open Access   (Followers: 4)
Metalloproteinases In Medicine     Open Access  
Microbial Biotechnology     Open Access   (Followers: 9)
MicroMedicine     Open Access   (Followers: 3)
Molecular and Cellular Biomedical Sciences     Open Access   (Followers: 1)
Molecular Biotechnology     Hybrid Journal   (Followers: 13)
Molecular Genetics and Metabolism Reports     Open Access   (Followers: 3)
Nanobiomedicine     Open Access  
Nanobiotechnology     Hybrid Journal   (Followers: 2)
Nanomaterials and Nanotechnology     Open Access  
Nanomedicine and Nanobiology     Full-text available via subscription  
Nanomedicine Research Journal     Open Access  

        1 2 | Last

Journal Cover
Entomologia Generalis
Journal Prestige (SJR): 0.395
Citation Impact (citeScore): 1
Number of Followers: 0  
 
  Full-text available via subscription Subscription journal
ISSN (Print) 0171-8177
Published by Schweizerbart Science Publishers Homepage  [20 journals]
  • Preface to August Wilhelm Steffan
    • Abstract: Preface to August Wilhelm SteffanPaulus, Hannes F.
      Entomologia Generalis, (2018), p. 175 - 176
      PubDate: Fri, 10 Aug 2018 00:00:00 +000
       
  • August Wilhelm Steffan (1933 – 2016)
    • Abstract: August Wilhelm Steffan (1933 – 2016)Schlüter, Thomas
      Entomologia Generalis, (2018), p. 177 - 196
      PubDate: Fri, 10 Aug 2018 00:00:00 +000
       
  • The Phenomenon of Metathetely, formerly known as Prothetely, in
           Raphidioptera (Insecta: Holometabola: Neuropterida)**
    • Abstract: The Phenomenon of Metathetely, formerly known as Prothetely, in Raphidioptera (Insecta: Holometabola: Neuropterida)**Aspöck, Horst; Abbt, Viktoria; Aspöck, Ulrike; Gruppe, Axel
      Entomologia Generalis, (2018), p. 197 - 230AbstractFor completion of their life cycle, most snakefly species require two years, some only one, and others (at least single specimens) three years or more. In most species, the larvae of the final stage hibernate in a state of quiescence, pupate in spring and emerge as adults shortly thereafter. Hibernation starts when the temperature decreases, thus inducing quiescence in the larva. If the temperature decrease is withheld during the last hibernation, the larvae remain active and usually continue to molt, but will not pupate successfully in spring. Moreover, most of them will die prematurely and prior to that will often develop considerable pathomorphological alterations of the eyes, sometimes also the antennae, some develop wing pads and occasionally even pathomorphological modifications of the last abdominal segments. Until now, this phenomenon in Raphidioptera has been inaccurately referred to as “prothetely”; however, in reality, it represents “metathetely”.The degree and duration of lower temperatures in winter that are required for a normal pupation after hibernation have been presumed to be different among the species. So far, no standardized experiments have been carried out to clarify this. Here, we report on results of chilling the final larval stage of three species – Phaeostigma (Ph.) notata (Fabricius), Raphidia (R.) mediterranea (H. Aspöck, U. Aspöck & Rausch), and Mongoloraphidia (M.) sororcula (H. Aspöck & U. Aspöck) – from +20 °C to +4 °C for 4, 8, 12, 16, and 20 weeks. As expected considerable differences between the species were found: M. sororcula, which occurs in a region with markedly continental climate with a very cold winter, requires the longest period of chill for a normal metamorphosis. R. mediterranea, which occurs in Mediterranean areas with only short cold periods, needs only short periods of chilling for successful development and normal pupation. Ph. notata, which is distributed in large parts of extramediterranean Europe, necessitates a distinctly greater chilling than R. mediterranea, but less than M. sororcula. At any rate, a +4°C chilling for 20 weeks is sufficient to prevent metathetely in all species.Each metathetelously affected individual, even those from the same species, differs in some detail from all others. Presumably, these pathomorphological alterations are the result of an unsuccessful pupation, rather than an early appearance of imaginal characters. Thus, it is appropriate to term the phenomenon “metathetely” rather than “prothetely”. The physiological background of pathomorphological alterations due to withholding the chill is still entirely unknown.Various forms of metathetely in the three species are shown in 28 figures.The decrease of temperature as a precondition of pupation or – generally spoken – of normal and successful metamorphosis of snakeflies is convincingly correlated with the distribution of extant Raphidioptera in the world.
      PubDate: Fri, 10 Aug 2018 00:00:00 +000
       
  • Insect flight patterns in the natural environment – a retrospective
    • Abstract: Insect flight patterns in the natural environment – a retrospectiveNachtigall, Werner
      Entomologia Generalis, (2018), p. 243 - 259AbstractThe author summarizes and reviews a series of twenty-one papers published between 1992 and 2005 in Entomologia Generalis. To this end, he has compiled video anayses that have pointed out new behavioral patterns.
      PubDate: Fri, 10 Aug 2018 00:00:00 +000
       
  • Pollinators as isolation mechanisms: field observations and field
           experiments regarding specificity of pollinator attraction in the genus
           Ophrys (Orchidaceae und Insecta, Hymenoptera, Apoidea)
    • Abstract: Pollinators as isolation mechanisms: field observations and field experiments regarding specificity of pollinator attraction in the genus Ophrys (Orchidaceae und Insecta, Hymenoptera, Apoidea)Paulus, Hannes F.
      Entomologia Generalis, (2018), p. 261 - 316AbstractIt is demonstrated that the biological species concept of the genus Ophrys corresponds to the general concepts of Ernst Mayr. On the example of two closely related forms of the fusca group in Andalucia, it is shown how to handle the different criteria of the biospecies concept. One is the high specifity of attraction of a male bee followed by a complex pseudocopulation behaviour which enables the correct pollen transfer within the species. The high specifity is caused by a highly remarkable imitation of the sexual pheromones of the mimicked female of the pollinator. Sexual pheromones of animals act as intraspecific signals which result in attractions of only males of the same species. Exactly this specific behaviour is triggered by the Ophrys flower, too. Thus the pollinator male is attracted only to those flowers which have the correct mixture of the pheromone molecules. To further ensure success the pollinating males also select other characters of the Ophrys flower as labellum size, colour, labellum hair characters, phenology and possibly habitat selections etc. In the sexual reproduction behaviour of the male insect acts as pregamic isolation mechanisms for the given Ophrys like for their own female.We were successful in confirming the high specifity of the pollination mechanisms in numerous field experiments, mainly choice experiments, this in contrast o the statements of Hennecke & Munzinger (2013). They had argued that there were many different pollinator species listed in the literature for a given Ophrys species. However, they did not critically assess the reliability of these citations. For this, they would have had to ctitically read the primary literature and not only the secondary quotations like in Delforge (2005, 2016) or others. Therefore, they rehashed many of the old mistakes concerning wrong identifications of the bees or even the Ophrys taxons which had long been corrected. Especially a mixture of old and actual names of the same species in different combinations is annoying and seems to demonstrate that the authors are not really fit in the nomenclature of Ophrys and their pollinators. This is demonstrated by some examples, which are very confusing without knowledge of the bees. For example, these authors did not realize that a 3–4 mm bee (Andrena hesperia) could not serve as a pollinator of a 20 mm labellum of a large Ophrys omegaifera species.However, there are some cases with more than one pollinator. Besides the main pollinator the others I call them “secondary pollinators” which in those cases we could check their pollination contribution in the population is very weak. In many cases, these secondary visitors are mainly pollinaria thieves because they are only attracted and try to copulate. However, they seem learn very quickly that Ophrys is not a true female and will never visit another flower of this kind. In some quantitative field experiments (with Eucera nigrescens/longicornis on Ophrys holosericea) we could confirm this hypothesis.The conclusion of the two authors that Ophrys species are not species-specific regarding sexual attractivity does not correspond to our field experiments regarding olfactory compound investigations in biotests, and does not agree with the molecular data of population biology and with the genetic analyses.The other proof the authors used in their argumentations are the supposed frequency of hybrids. But this is also a spurious argument. Hybrids are only frequent in literature and not in nature. In places frequently visited by orchid enthusiasts, the number of observed “hybrids” is conspicuously high, which may indicate “hand pollination”.The aim of the two authors has been to reduce the many species within Ophrys because they cannot be discriminated. Consequently, they try to establish a simplified classification system without any biological background. A complete anthropomorphic typological systematic like the “Index of accepted plant names” is issued by Kew Gardens. However, this is in the 21st century, 150 years after Darwin, a kind of middle age taxonomy. They use a quite typological morphospecies concept like in the book of Pederson & Faurhold (2007). This does not fit with nature. If you pay attention to the different criteria of the biospecies concept within the genus Ophrys you will recognise the many species which the genus makes so interesting.A critical list of the known specific pollinators of the genus Ophrys is given as an appendix.
      PubDate: Fri, 10 Aug 2018 00:00:00 +000
       
  • Functional morphology and evolution of the flight apparatus of Libelloides
           (Neuroptera: Ascalaphidae)
    • Abstract: Functional morphology and evolution of the flight apparatus of Libelloides (Neuroptera: Ascalaphidae)Pfau, Hans Klaus
      Entomologia Generalis, (2018), p. 317 - 352AbstractThe mechanics of the different skeleto-muscular systems of the flight apparatus of Libelloides (Neuroptera, Ascalaphidae) is described. The muscles 1) drive the tergal arching and up and down movements (wing stroke power muscles), 2) alter the stroke plane, 3) rotate and twist the wing on its longitudinal axis (pronation, supination), 4) modify a “symmetrical click mechanism” and 5) adjust the wing stroke velocity and amplitude.Several muscles show combinations of different functions: The strong basalar muscles use a modified mechanics of the basalares to move the wing frontally into the flight position, during flight they alter the stroke plane in antagonistic relation to the subalar muscles (downstroke) and axillary 3 muscles (upstroke). – The muscles of the axillary 3 support (in addition) the upstroke directly and pronate the wing. – The mesothoracic muscle of the laterophragma combines a weak upstroke- with a strong pronation-effect. The latter is initiated by a rotation of the laterophragma on a posterior pleural wing process and transmitted via intermediate sclerites (axillaries 4) into the wing (laterophragma-axillary 4-system). – The subalar muscles are direct downstroke muscles and additionally supinate the wing and steepen the stroke plane.A muscle of the axillary 4 of the mesothorax is considered as a monofunctional, stroke-independent supinator of the downstroke. It is capable of enlarging the aerodynamic angle of attack and enhancing the generated aerodynamic force.Differences between meso- and metathorax are described. The metathoracic system is smaller in size and placed more obliquely, its basic wing stroke plane is less steep and there are fewer options for an adjustment of pronation, supination and stroke plane.The evolution of certain characters is retraced within the Neuropterida. The enlargement of the pronation-supination range of the forewing by evolution of the laterophragma-axillary 4-system, and the subsequent transformation of a tergopleural muscle into an efficient wing-supinator, are evaluated as essential for the outstanding flight abilities of the Ascalaphidae.
      PubDate: Fri, 10 Aug 2018 00:00:00 +000
       
  • Functional morphology of the mesothoracic flight apparatus of Apis
           mellifera (Hymenoptera: Apidae)
    • Abstract: Functional morphology of the mesothoracic flight apparatus of Apis mellifera (Hymenoptera: Apidae)Pfau, Hans Klaus
      Entomologia Generalis, (2018), p. 353 - 373AbstractThe wingstroke mechanism of Apis mellifera constitutes a synthoracic kinematic chain mechanism, which is convergent with the superficially similar mechanism of Calliphora erythrocephala. A strongly modified tergal arching mechanism is characterized by the fact that frontally and caudally of the marginal tergal incision situated sections of the tergum cooperate in an optimized levering of the wing via the axillary 1 and (stalked) axillary 2. Both possible types of wingstroke-bistability (parascutal and symmetrical click mechanism) are lacking.Specific relative movements between axillary 1 and axillary 2 – considered responsible for “automatic” pronation and supination movements at the turning points of the wingstroke – are not possible because of the presence of a transverse hinge joint between axillary 1-base and axillary 2+axillary 1-hook.Whereas the basalar system is able to extend the wing into the flight position and to flatten the stroke plane during the downstroke (without downstroke or pronation function), the axillary 3-system combines the four functions upstroke, pronation, stroke plane flattening and wing-flexion.Different parts (foremost the axillary lever, axillary 3, axillary 4 and subalare) are integrated in a complicated system for the adjustment of the angle of attack of the wing via the alteration of a Z-profile: at the upper turning point of the wingstroke a fast reduction of the Z (pronation) by the axillary lever-muscle is postulated, whereas the aerodynamical angle of attack is adjustable separately during up and downstroke by muscles of the axillary 3 and subalare.
      PubDate: Fri, 10 Aug 2018 00:00:00 +000
       
  • Eocene insects from a Maar Lagerstätte at Mahenge, northern Tanzania
    • Abstract: Eocene insects from a Maar Lagerstätte at Mahenge, northern TanzaniaSchlüter, Thomas
      Entomologia Generalis, (2018), p. 375 - 392AbstractThe Eocene Lagerstätte of Mahenge in north-east Tanzania represents an extinct ecosystem of a former volcanic crater lake (maar), which is a unique window into the past early Cenozoic freshwater and terrestrial ecosystems of sub-Saharan Africa. Apart from numerous fossil fishes and plants, till now only few insects have been discovered at Mahenge, which are here in an overview presented. It has to be noted that compared to other deposits of similar origin Mahenge has yielded only very few insect fossils, possibly due to the specific environmental conditions during the taphonomic processes of their sedimentation.
      PubDate: Fri, 10 Aug 2018 00:00:00 +000
       
  • The invasive brown marmorated stink bug (Halyomorpha halys) is now
           widespread in Hungary
    • Abstract: The invasive brown marmorated stink bug (Halyomorpha halys) is now widespread in HungaryVétek, Gábor; Károlyi, Balázs; Mészáros, Ádám; Horváth, Dávid; Korányi,, Dávid
      Entomologia Generalis, (2018), p. - AbstractThe brown marmorated stink bug, Halyomorpha halys (Stål, 1855 ) (Hemiptera: Pentatomidae), is native to East Asia and was first detected in Europe in 2004 in Switzerland. In Hungary, it was first recorded in the capital, Budapest, in 2013. Halyomorpha halys is an invasive polyphagous species, which is able to cause severe damage to a wide range of crops, and it is also considered an urban pest in America and Europe. By 2018, the status of H. halys as an agricultural pest causing major damage to cultivated plants in Hungary has been confirmed only by a single study carried out in 2016 at a farm located in Budapest. In the past few years, the pest has received significant media coverage in Hungary due to the increasing nuisance problems. However, detailed and reliable information on its spread were still missing. Therefore, in 2016, an extensive survey was initiated to obtain data on the distribution of H. halys in the country. This study was primarily based on the use of citizen science, which was completed with information requests from the members of professional organizations as well as active data collection by the authors. The results of this first extensive survey revealed the wide distribution of H. halys in Hungary, with mass occurrence of the species at several locations throughout the country, especially in the region of Budapest. These data highlight the rapid dispersal of H. halys and call for attention to the threat the pest poses to Hungarian plant production.
      PubDate: Wed, 01 Aug 2018 00:00:00 +000
       
  • Host plants of the polyphagous grape berry moth Lobesia botrana during
           larval stage modulate moth egg quality and subsequent parasitism by the
           parasitoid Trichogramma cacoeciae
    • Abstract: Host plants of the polyphagous grape berry moth Lobesia botrana during larval stage modulate moth egg quality and subsequent parasitism by the parasitoid Trichogramma cacoeciaeThiery, Denis; Desneux, Nicolas
      Entomologia Generalis, (2018), p. - AbstractThe European grapevine moth Lobesia botrana is the main pest in viticulture, and recently extended its area to South and North America. Biological control by egg parasitoids is a current issue, which may help achieving pesticide use reduction in grapes. We hypothesized that the host plant bearing the larvae of this polyphagous moth species could affect the egg quality produced by the adults with consequences on the egg parasitism by the egg parasitoid Trichogramma cacoeciae Marchal. Larval food of agar based supplemented with different host berries or flowers has been proposed to L. botrana larvae. Berries of two grape cultivars, Cabernet Franc and Sauvignon, and flowers of three host plants of L. botrana, Olive tree (Olea europea), privet (Ligustrum vulgare) and tansy (Tanacetum vulgare), have been offered to larvae during their entire development, and eggs laid were exposed to T. cacoeciae females under laboratory controlled conditions. Results indicated an influence of the food offered to L. botrana larvae on the parasitism rate of their eggs by T. cacoeciae females. The rearing medium containing Sauvignon berries led to host eggs significantly less parasitized than those produced by L. botrana females raised on the other plants. Moreover, the percentage of aborted L. botrana eggs also differed and was the highest with the media containing Sauvignon berries. Our results suggest that host plant compounds ingested by the larvae could be stored in the eggs and affect their quality or viability. Finally, we observed that the presence of T. cacoeciae females significantly increased by two fold the percentage of aborted eggs compared to eggs with no female in the control treatment. Implications of these results in the biological control of L. botrana by Trichogramma species are discussed, especially for vineyards planted with different grape cultivars or surrounded by different vegetation.
      PubDate: Wed, 01 Aug 2018 00:00:00 +000
       
 
 
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