Correspondence of environmental tolerances with leaf and branch attributes for six co-occurring species of broadleaf evergreen trees in northern California

 For the angiosperm dominants of northern California’s mixed evergreen forests, this study compares the display of photosynthetic tissue within leaves and along branches, and examines the correspondence between these morphological attributes and the known environmental tolerances of these species. Measurements were made on both sun and shade saplings of six species: Arbutus m e n z i e s i i (Ericaceae), C h r y s o l e p i s c h r y s o p h y l l a (Fagaceae), L i t h o c a r p u s d e n s i f l o r u s (Fagaceae), Quercus c h r y s o l e p i s (Fagaceae), Quercus w i s l i z e n i i (Fagaceae), and Umbellularia c a l i f o r n i c a (Lauraceae). All species had sclerophyllous leaves with thick epidermal walls, but species differed in leaf specific weight, thickness of mesophyll tissues and in the presence of a hypodermis, crystals, secretory idioblasts, epicuticular deposits, and trichomes. The leaves of Arbutus were 2 – 5 times larger than those of C h r y s o l e p i s, L i t h o c a r p u s and Umbellularia and 4 – 10 times larger than those of both Quercus species. Together with differences in branch architecture, these leaf traits divide the species into groups corresponding to environmental tolerances. Shade-tolerant C h r y s o l e p i s, L i t h o c a r p u s, and Umbellularia had longer leaf lifespans and less palisade tissue, leaf area, and crown mass per volume than the intermediate to intolerant Arbutus and Quercus. Having smaller leaves, Quercus branches had more branch mass per leaf area and per palisade volume than other species, whereas Arbutus had less than other species. These differences in display of photosynthetic tissue should contribute to greater growth for Quercus relative to the other species under high light and limited water, for Arbutus under high light and water availability, and for C h r y s o l e p i s, L i t h o c a r p u s, and Umbellularia under limiting light levels. Accepted: 22 March 1996     

Taxonomic review of the genus Lymantria (Lepidoptera: Erebidae: Lymantriinae) in Korea

A taxonomic review of the Korean Lymantria Hübner, 1819 was conducted. A total of nine species of five subgenera with two unrecorded species are listed: Lymantria (Porthetria) dispar Linnaeus 1758, L. (P.) xylina Swinhoe 1903, L. (Lymantria) monacha (Linnaeus 1758), L. (L.) minomonis Matsumura 1933 (new to Korea), L. (L.) similis monachoides Schintlimeister 2004 (new to Korea), L. (L.) lucescens (Butler 1881), L. (Nyctria) mathura Moore 1865, L. (Collentria) fumida Butler 1877, and L. (Spinotria) bantaizana Matsumura 1933. Lymantria (Lymantria) minomonis and L. (L.) similis monachoides are newly added to the Korean fauna. Lymantria (L.) minomonis was found only on Bogildo Island of Jeollanam‐do in the southern part of Korea, and L. (L.) similis monachoides was collected in central Korea. Lymantria (Porthetria) xylina and L. (Collentria) fumida were not examined in this study, and it is considered that the previous records were due to misidentification or they are only distributed in the northern part of the Korean Peninsula. We provide diagnoses of two unrecorded species and adult habitus and genitalia photos of the Korean Lymantria species.     

Community based natural resource management in Zimbabwe: the experience of CAMPFIRE

Communal Areas Management Programme for Indigenous Resources (CAMPFIRE) is a long-term programmatic approach to rural development that uses wildlife and other natural resources as a mechanism for promoting devolved rural institutions and improved governance and livelihoods. The cornerstone of CAMPFIRE is the right to manage, use, dispose of, and benefit from these resources. Between 1989 and 2006, CAMPFIRE income, mostly from high valued safari hunting, totalled nearly USD 30 million, of which 52 allocated to sub-district wards and villages for community projects and household benefits. Whilst a number of assumptions underlying the success of CAMPFIRE as an innovative model for CBNRM have yet to be met, CAMPFIRE confirms the concept that devolving responsibility and accountability for natural resource management can be highly effective for the collective and participatory management of such resources. Elephant numbers in CAMPFIRE areas have increased and buffalo numbers are either stable or decreased slightly during the life of the programme. However, offtake quotas for these two species have increased with a concomitant decline in trophy quality. Although the amount of wildlife habitat diminished after 1980, following the commencement of CAMPFIRE the rate of habitat loss slowed down and in some specific instances was even reversed. More recently there has been increased pressure on habitats and other natural resources as a consequence of deteriora

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30 million, of which 52% was allocated to sub-district wards and villages for community projects and household benefits. Whilst a number of assumptions underlying the success of CAMPFIRE as an innovative model for CBNRM have yet to be met, CAMPFIRE confirms the concept that devolving responsibility and accountability for natural resource management can be highly effective for the collective and participatory management of such resources. Elephant numbers in CAMPFIRE areas have increased and buffalo numbers are either stable or decreased slightly during the life of the programme. However, offtake quotas for these two species have increased with a concomitant decline in trophy quality. Although the amount of wildlife habitat diminished after 1980, following the commencement of CAMPFIRE the rate of habitat loss slowed down and in some specific instances was even reversed. More recently there has been increased pressure on habitats and other natural resources as a consequence of deteriorating socio-economic conditions in the country. Where devolution has been successful, promising results have been achieved and the recent acceptance and implementation of direct payments to communities is probably the most significant development since 2000. That this has happened can be attributed to CAMPFIRE enabling communities to maximize their roles within the existing set of rules, and by so doing, allowing these rules to be challenged. Donor (73%) and government (27%) investments into the programme amounted to 35 million during the period 1989 to 2003. Since 2003 however, donor funding has been reduced to <$600,000 over the past 5 years.     

Weitere Untersuchungen an xenoplastischen Neuralchimären von Triton und Bombinator

Ohne ZusammenfassungVerzeichnis der Abkürzungen Ao Aorta - Asp Arteria spinalis ventralis - Aw Aortenwurzel - Bg Bindegewebe - Bl Blut - Bo Bombinator pachypus - Ch Chorda - Deg Degeneration - En Entoderm - Ep Ependym - Fm Fasermasse - Fmv Fissura mediana ventralis - Fpl Flügelplatte - Gl Glaesner-Stadium - Gpl Grundplatte - Hch Hypochorda - I Implantat - iZ internunciale Zellmasse - Km Kernmasse - M motorische Wurzelzelle - My Myotom - Nb Neuralbogen - PM Pollister-Moore-Stadium - Pyk Kernpyknose - Rv Ramus ventralis - Spgl Spinalganglion - Sy Sympathicus - Tr Triton alpestris - V4 4. Hirnventrikel - Vg Vornierengang - W Wirt - Zk Zentralkanal - IX–X-Wurz Wurzel des Glossopharyn-geus-Vagus-Komplexes     

Mycorrhizae from Denali National Park and Preserve,Alaska

 Roots of 40 taxa of higher plants (Pteridophyta, Spermatophyta) from two alpine study sites in Denali National Park and Preserve in central Alaska were examined for their mycorrhizal colonization. We observed ectomycorrhizae on six species: Betula nana, Salix reticulata, Salix polaris, Salix arctica, Polygonum viviparum, and Dryas octopetala. Seven taxa, Cassiope tetragona, Empetrum nigrum, Ledum palustre subsp. decumbens, Ledum palustre subsp. groenlandicum, Loiseleuria procumbens, Vaccinium uliginosum and Vaccinium vitis–idaea (all Ericales), had ericoid mycorrhizae. One species, Arctostaphylos alpina, formed a typical arbutoid mycorrhiza. Two species (Sibbaldia procumbens and Aconitum delphinifolium) showed well-developed VA mycorrhizae, whereas three species of plants (Lycopodium clavatum, Silene acaulis and Oxytropis scammaniana) had vesicles, but no arbuscules. The roots of 11 other plants (Lycopodium clavatum, Lycopodium selago, Silene acaulis, Gentiana algida, Lupinus arcticus, Oxytropis scammaniana, Pedicularis langsdorffii, Pedicularis capitata, Pedicularis verticillata, Artemisia sp. and Carex bigelowii) had a variety of intracellular colonizations which are referred to as dark septate fungi. No mycorrhizae were found on 12 other plants: Equisetum arvense, Equisetum variegatum, Lycopodium alpinum, Polygonum bistorta, Saxifraga hieracifolia, Saxifraga hirculus, Astragalus alpinus, Pedicularis kanei, Petasites frigidus, Carex podocarpa, Carex microchaeta and Poa arctica. A possible ecological role of dark septate fungi is discussed. Accepted: 4 August 1995     

Antifungal activity of essential oils against three vegetative-compatibility groups of <Emphasis Type="Italic">Verticillium dahliae</Emphasis>

The antifungal activities of volatile phase effects of essential oils from Origanum onites, O. syriacum, O. minutiflorum, O. vulgare, O, marjorana, Thymus vulgaris, T. serpyllum, Rosmarinus officinalis, Salvia officinalis and Micromeria fruticosa were evaluated for their ability to inhibit growth of three vegetative compatibility groups (VCGs) of Verticillium dahliae. Carvacrol was the main component of O. onites, O. minutiflorum and O. vulgare essential oils, while γ-terpinene was the main component of O. syriacum. P-cymene and thymol were the dominant component of T. vulgaris and T. serpyllum. β- thujone and l-camphor were the main component of S. officinalis. Polegone and isomenthone were the dominant components of M. fruticosa essential oil. Based on the in vitro test, the degree of fungistatical effects can be ranked in the following order of inhibition: O. syriacum = O. onites = O. minutiflorum = O. vulgare = T. vulgaris > T. serpyllum > M. fruticosa > S. officinalis = O. marjorana > R. officinalis. The essential oils of S. officinalis, O. marjorana and R. officinalis displayed moderate antifungal activity, that increased with increasing concentrations. Among the VCGs, VCG2A and VCG4B were found to be highly sensitive to the essential oils. The essential oils of O. syriacum, O. onites, O. minutiflorum, O. vulgare and T. vulgaris were the most efficacious, demonstrating strong antifungal activity against all of the tested VCGs of V. dahliae at relatively low concentrations and they could find practical application as natural fungicides in the prevention and protection of plants from V. dahliae infections.     

Geschlechtliche organisation,fortpflanzungsverhalten und ursachen der sexuellen vermehrung von Stenostomum sthenum nov. spec. (Turbellaria,Catenulida)

Certain temperatures and H-Ion concentrations are necessary for the development of male and female reproductive organs. The differentiation of the reproductive system from undifferentiated cells conforms precisely with data on other species of Stenostomum.

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Abkürzungen in den Abbildungen b Bindegewebszelle - c Cilien - cy Cytoplasma - d Darm - de Ductus ejaculatorius - dl Darmlumen - do Dotter - dr Drüsenzellen - lr Lÿckenraum - m Mundöffnung - n Nucleolus - np Nephroporus - o Ovar - p männlicher Genitalporus - pa parenchymatischer Raum - pf periembryonale Flüssigkeit - dse dorsale Epidermis - e dorsolaterale Epidermis - ed extraembryonaler Dotter - ee Epidermiseinstülpung - eh Epidermis +Hautmuskelschlauch - em Embryo - ex Exkretvakuole - f Freßzelle - g Gehirn - ga Gehirnanlagen - gr Granula - h Hautmuskelschlauch - hz Hüzllzelle - kl Versehlußkegel/Klebkegel - in indifferente Zelle - k Kern - kdr Klebdrüsenzelle(n) - kk kollabierter Kanal - kö Körnerkolbenzelle - kp Kopulationsorgan - ku Kufen - kw Körperwand - l Lichtsinnesorgan - li Linsenkörper - lk lichtbrechende Konkremente im Darmgewebe - ph Pharynx - phr Pharynxregion - pr Zentralkanal des Protonephridialsystems - ps Präspermatide - pu Punktfeld - q Zellquartett - r Riechgruben - rh Rhombuszellenband - rhb Rhabditen - rm Radiärmuskelzelle - rhs Rhabditenschleim - rs resorbierende Darmzelle(n) - s Schale - sc Spermatocyten - se Sekretgang - t Tastborste - ta Auflösungsprodukte des Hodens - te Hoden - to Terminalorgane(e) - tz Teilungszone - v Vakuole - w vermutliches Rudiment des weiblichen Genitalporus     

Phylogenetic systematics of the Empis (Coptophlebia) hyalea-group (Insecta: Diptera: Empididae)

Six clades are inferred from a phylogenetic analysis including 42 species belonging to the Empis (Coptophlebia) hyalea‐group. These clades are named as follows: E. (C.) acris, E. (C.) aspina, E. (C.) atratata, E. (C.) hyalea, E. (C.) jacobsoni and E. (C.) nahaeoensis. The presence of two dorsal more or less developed epandrial projections is considered autapomorphic for the E. (C.) hyalea‐group in addition to two characters previously found to support the monophyly of this group (presence of an unsclerotized zone in the middle of labella and epandrium unpaired). Amongst the cladistically analysed species, 24 are newly described [ E. ( C. ) acris , E. ( C. ) aspina , E. ( C. ) cameronensis , E. ( C. ) duplex , E. ( C. ) incurva , E. ( C. ) inferiseta , E. ( C. ) kuaensis , E. ( C. ) lachaisei , E. ( C. ) lamellalta , E. ( C. ) lata , E. ( C. ) loici , E. ( C. ) longiseta , E. ( C. ) mengyangensis , E. ( C. ) menglunensis , E. ( C. ) missai , E. ( C. ) nimbaensis , E. ( C. ) padangensis , E. ( C. ) parvula , E. ( C. ) projecta , E. ( C. ) pseudonahaeoensis , E. ( C. ) submetallica , E. ( C. ) urumae , E. ( C. ) vitisalutatoris and E. ( C. ) woitapensis ], five are reviewed [E. (C.) hyalea Melander, E. (C.) jacobsoni De Meijere, E. (C.) ostentator Melander, E. (C.) sinensis Melander and E. (C.) thiasotes Melander] and 13 were recently described in two previous papers. Two additional species, E. (C.) abbrevinervis De Meijere and E. (C.) multipennata Melander, are also reviewed but not included in the cladistic analysis since they are only known from the female. A lectotype is designated for E. (C.) jacobsoni. A key is provided to the six clades of the E. (C.) hyalea‐group as well as to species of each clade. A catalogue of the E. (C.) hyalea‐group, including 72 species, is given. The taxonomic status of 25 additional species mainly described by Bezzi and Brunetti, from the Oriental and Australasian regions, is discussed. The E. (C.) hyalea‐group is firstly recorded from the Palaearctic Region and Australia. Finally, the distribution and the habitats of the species compared with their phylogeny suggest a possible relationship between the diversification of the group and forest fragmentations during the Quaternary. © 2005 The Linnean Society of London, Zoological Journal of the Linnean Society, 2005, 145 , 339–391.     

Food attraction and population growth of fungivorous nematodes with different fungi

Food attraction of the fungivorous nematodes Aphelenchus avenae and Aphelenchoides spp. to seven fungal species (Pyrenochaeta lycopersici, Botrytis cinerea, Rhizoctonia solani strains AG 3 and AG 2‐1, Verticillium dahliae, Pochonia bulbillosa, Mortierella hyalina and Trichoderma harzianum) was determined on agar plates by counting the number of test nematodes present on the mycelium of each fungus 24 h after inoculation. Population growth of A. avenae and Aphelenchoides spp. on five of the seven fungi included in the attraction test (P. lycopersici, R. solani strain AG 3, V. dahliae, P. bulbillosa and T. harzianum) was also determined on agar plates by counting nematode numbers every week during a 6‐week period. A. avenae and Aphelenchoides spp. were attracted to all the fungi tested. A. avenae was preferentially attracted to V. dahliae (P < 0.0001), and Aphelenchoides spp. did not show any preference except for low attraction to R. solani. A. avenae and Aphelenchoides spp. reproduced on all fungal species tested. After 6 weeks of incubation, the highest number of nematodes was found on P. lycopersici and P. bulbillosa, while the lowest number occurred on R. solani for A. avenae and on T. harzianum for Aphelenchoides spp. The suitability of a fungus as a host was not clearly related to the attraction to that fungus.     

Studien an panorpa communis L.

Ohne ZusammenfassungErklärung der Ahkürzungen AccB Akzessorische Borsten - GuG Gulargrube - Acoi Antacoila - GuN Gularnaht - Acor Antacoria - GuRg Gularregion - Acl Anteclypeus - Hcd Hypoeondylus - AcxS Antecoxalstück - Hph Hypopharynx - Ant Antenne - HphSp Hypopharyngealspange - Antr Antennaria - LP Labilapalpus - BSp Basalspange - LTd Labialsehne - Bant Basantenna - L Labium - Bmd Basimandibula - Lb Labium - Bd Body - Lac Lacinia - Cd Cardo - LtOc Lateralocellus - Cl Clypeus - Md Mandibel - ClLbN Clypeo-Labralnaht - Mx Maxille - CN Coronalnaht - MxP Maxillarpalpus - Cpten Corpotentorium - MxS Maxillarsehne - DA Dorsaler Arm - Mn Mentum - Ecd Epicondylus - Mnten Metatentorium - Eph Epipharynx - MO Medianocellus - Eph Td Epipharyngealsehne - MuGN Midigularnaht - EphSk Epipharyngealsklerite - Occ Occiput - EphSp Epipharyngealspange - OccFo Oceipitalforamen - Ext Extensor - OccN Occipitalnaht - Faz Fazettenauge - Odt Odontoideum - Fr Frons - ORg Ocularregion - FrG Frontalgrube - OW Ocularwulst - FrN Frontalnabt - Ppf Papifer - FrS Frontalstück - Ppg Palpiger - FrCIN Fronto-Clypealnaht - Pd Pedicellus - Fun Funiculus - Ph Pharynx - Ga Galea - Pcl Postelypeus - Ge Gena - Pcoi Postcoila - GeN Genalnaht - Pge Postgena - Gg Grundglied - Prcoi Precoila - Gu Gula - Prten Pretentorium - Prsth Prostheca - SZ Sinneszäpfchen - Pa Punktauge - Spd Speieheldrüse - Rtr Retractor - SpdM Speicheldrüsenmündung - Sc Scapes - St Stipes - SB Sinnesborsten - Sbmn Submentum - SG Sinnesgruben - Suten Supratentorium - SK Sinneskolben - VA Ventraler Arm - SS Sinnesstiftchen - V _x Vertex     

西藏蕨类植物新记录

报道了中国西藏自治区蕨类植物新记录2属,即粉叶蕨属(Pityrogramma)和肋毛蕨属(Ctenitis),以及新记录15种1变种——疏叶卷柏(Selaginella remotifolia)、粉叶蕨(Pityrogramma calomelanos)、云南网藤蕨(Lomagramma yunnanensis)、灰绿耳蕨(Polystichum scariosum)、高大复叶耳蕨(Arachniodes gigantea)、兆洪鳞毛蕨(Dryopteris wuzhaohongii)、亮鳞肋毛蕨(Ctenitis subglandulosa)、高山蹄盖蕨(Athyrium silvicola)、卵果双盖蕨(Diplazium ovatum)、肉刺双盖蕨(D.simile)、瘤羽假毛蕨(Pseudocyclosorus tuberculifer)、耳羽钩毛蕨(Cyclogramma auriculata)、尖嘴蕨(Lepisorus mucronatus)、黑鳞瓦韦(L.sordidus)、喙叶假瘤蕨(Selliguea rhynchophylla)和灰茎节肢蕨(Arthromeris himalayensis var.niphoboloides)。该文还对墨脱鳞盖蕨(Microlepia medogensis)的分类学处理提出了新的建议。凭证标本保存在上海辰山植物标本馆(CSH)。     

Beiträge zur kenntnis von gyrinus natator substriatus steph. I. Lebensweise und entwicklung. II. Der sehapparat

Ohne ZusammenfassungZeichenerklärung Aa Augenanlage - Abs Abdominalsegment 1–6 - äG äußeres Ganglion - Ak Augenkapsel - Akb Augenkapselbildungszellen - ä.Kr. Äeßere Kreuzung - Bm Basalmembran - Bz. Basalzelle - Dv Dorsalverfalzung - El Elytre - Fe Femur - Fg Fettgewebe - GZ Ganglienzellen - GMZ Ganglienmutterzellen - HBH hinterer Bildungsherd - HC hintere Coxa - HPZ Hauptpigmentzellen - Hy Hypodormis - HZ Stützzellen - Z Imaginalscheibe - i.G. inneres Ganglion - i.Kr. innere Kreuzung - K Kornea - KK Kristallkegel - KKZ Kristallkegelzellen - KZ Korneagenzellen - LH Lamellenhaare - MC mittlere Coxa - MG mittleres Ganglion - Neur Neuroblast - Nf Nervenfaser - N.opt. Nervus opticus (Nervenbündelschict) - NPZ Nebenpigmentzellen - N.st. Nervus stemmaticus - o.A. oberes Auge - P. Punkte auf den Elytren mit Chitinzapfen - Ph Phagozyten - R. Rhabdom - Ret Retinula - RZK Retinulazellkerne - Ret.Z. Retinulazellen - r.f. Musculus rotator femuris - rud. St. rudimentäre Stemmata - SZ Sehzellen - S.V. seitliche Verfalzung - Ta 1–4 Tarsus 1–4 - Ti Tibia - Ti.T. Tibialtasche - Tr. Trachee - u.A. Unteres Auge - V.C. vordere Coxa - VBH vorderer Bildungsherd - Z Zuwachszone - ZG Zellgrenze     

Monographic der Gattungen Hesionides Friedrich und Microphthalmus Mecznikow (Polychaeta,Hesionidae)

Comparative studies of the genera Hesionides and Microphthalmus have produced a lot of results to anatomy, ecology, life history, locomotion and systematics (3 new species) of polychaetes. The small shape of the body, adhesive anal lobes, neuropods working like legs, aberrant complicated sexual organs, shape of the sperms, formation of spermatophores, development in cocoons, seasonal migrations etc. are considered as adaptations to the extreme environmental factors of sandy biotopes.

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Abkürzungen in den Abbildungen a Auge - ac Acicula - al Anallappen - äö äußere Öffnung - aws apikaler Wimperschopf - bm Bauchmark - bl Blastoporus - bs Borstensack - d Darm - dam Darmmuskulatur - do Dorsalcirrus - ddz Darmdrüsenzelle - de Ductus ejaculatorius - dez drüsige Epidermiszelle - dg dorsales Blutgefäß - dgl Ductus glandularis - dlm dorsale Längsmuskulatur - dm Ductus muscularis - dme dorsales Mesenterium - drm dorsale Ringmuskulatur - drs Drüsensekrete - dt dorsaler Tentakel - dvm Dorsoventralmuskulatur - dz Drüsenzellen - ef Epidermisfalte - ei Ei - eko Endstück des Kopulationsorgans (Penis) - eog eosinophiles Gewebe ep Epidermis - ev Epidermisvakuolen - gd Gonodukt - gdga großer Drüsengang - gre Gregarine - gso Genitalsinnesorgan - gsp gespeicherte Spermien - h Haken - heb heterogomphe Borste - hm Hautmuskelschlauch - hph hinterer Pharynxabschnitt - la Lakune - lm Längsmuskulatur - lvm latero-ventrale Langsmuskulatur - lw Längsam schlagende Wimper - lz lamellenförmige Zunge - m Muskel - mb Muskelband - mbl Muskelblase - mes Mesoderm - mfz mittlere Faltungszone - mm Muskelmantel - mnop Muskulatur des Notopodiums - ms Mittelstück - mt medianer Tentakel - mu Mundoffnung - mvm medio-ventrale L:angsmuskulatur - k Kopf - kdga kleiner Drüsengang - ke Kern - ko Kopulationsorgan - ku Kutikula - n Nephridium - nei nicht zur Ablage gelangendes Ei - nep Neuropodium - ng Netzgewebe im Coelom - nop Notopodium - npg Neuropilemmasse des Gehirns - oe Oesophagus - öm männliche Geschlechtsöffnung - örcg Öffnung des receptaculären Gewebes (Vaginalporus) - öw weibliche Geschlechtsöffnung - p Penis - pam Parapodienmuskulatur - ph Pharynx - pha Pharynxauskleidung - phk Pharynxkappe - php Pharynxpapille - plm Plasmamantel - pH Penisnerv - pp Penispapille - prm Penisretraktormuskel - pro Protraktor - ps Parapodiensegment - py Pygidium - ra rudimentäres Auge - ram Radiärmuskulatur - ramz radiäre Muskelzelle - rcg receptaculäres Gewebe - rcs Receptaculum seminis - ret Retraktor - rim Ringmuskulatur - rpf roter Pigmentfleck - s Schwanz - sb Sägeborsten - sh Sinneshärchen - sho Schlundhöhle - sk Schlundkommissur - sn Saugnapf - sp Spermien - spgs Spermiogenesestadien - sph Sphinkter - stp Spermatophore - ssw schnell schlagende Wimper - sw Schlundwandung - ur Uriten - vc Ventralcirrus - ver Verdauungstrakt - vs Vesicula seminalis - wb Wimperbuschel - we Wimperepithel - wk Wimperkranz - wt Wimpertrichter - zy Zytophore     

Intra-H-2 recombination in the mouse

Serological characterization of threeK-S interval recombinant strains, TBR2 (H-2 ^at2 ), TBR3 (H-2 ^at3 ) and AIR1 (H-2 ^a2 ) was performed using anti-H-2, Ia, Ss and Slp antisera. The data presented here reveal that the crossover events in both TBR2 and TBR3 occurred between theI-A andI-E subregions. In both cases, theH-2K andI-A subregions were derived from theH-2 ^t1 chromosome, while theI-E, S andH-2D regions were derived from theH-2 ^b chromosome (K ^s A ^k E ^b S ^b D ^b ). TheH-2 ^a2 chromosome resulted from a crossover event between theH-2 ^a1 andH-2 ⁱ⁹ chromosomes. Ia and Ss typing of AIR1 suggested that theK toI-E regions originated fromH-2 ^a1 and theS andD regions originated fromH-2 ⁱ⁹ (K ^k A ^k E ^k S ^b D ^d ).     

Intensity of nitrification in soil as a function of time and soil moisture

Proceeding from three previously derived expressions for the intensity of nitrification in soil as a function of time (logΣN=K.logt+q), as a function of incubation moisture (logΣN=A.pF _i+B), as a function of initial moisture (logΣN=C.pF _v+D), it was shown that the nitrification intensity as a function of time and of moisture can be expressed by the bilinear function log ΣN=a.pF _i.logT+b.pF _i+c.logt+d; as a function of time and of initial moisture by the bilinear function logΣ=N=a.pF _v.logt+b.pF _v+c.logt+d; as a function of initial and incubation moisture by the bilinear function log ΣN=a.pF _ipF _v+b.pF _i+c.pF _v+d. The intensity of nitrification as a function of time, incubation moisture and initial moisture may be expressed by the multilinear function log ΣN=a.pF _i.pF _v.logt+b.pF _i.pF _v+c.pF _i.logt+d.pF _v.logt+e .pF _i+f.pF _v=g.logt+h. This function is valid for all the incubation moistures lying between pF _i 3.0 and 4.0 and for all initial moistures between 3.5 and 5.9 provided that the incubation temperature remains constant.     

Interpretation of gas residence time distributions in large airlift tower loop reactors

Gas-residence time distribution (RTD) response curves measured in a 23 m high pilot plant airlift tower loop reactor, which consisted of a riser, a special downcomer construction and at the top of the riser a large head. The measurements were evaluated by means of a deterministic dispersion model, which yielded the following particular parameters for the riser, downcomer and the head: Gas-Bo numbers, gas-mean residence times, gas holdups, liquid velocities, gas and liquid circulation times as well as a fraction of the large and small bubbles in a model medium (water) and during cultivation of baker's yeast.List of Symbols A cross section - Bo Bodenstein number - Bo _d (= l _d w _G,d /D _d ) - Bo _h (= l _h w _G,h /D _h ) - Bo _r (= l _r w _G,r /D _r ) - D longitudinal dispersion coefficient - E gas holdup - E(t) RTD-density function - L, l length parameter - q fraction of the gas throughput which is not recirculated (approximately equal to fraction of the large bubbles) - r fraction of the throughput which is recirculated (approximately equal to the fraction of the small bubbles) - t _c circulation time - t _cL liquid circulation time - t _c,L ^* liquid circulation time calculated from the measured w _Ld in the downcomer - V ^h hydrodynamical calculated gas-liquid volume - V _d ^h (=V _d+0.75/2 V _k ) - V _k ^h =(0.25V _k ) - V _r ^h = (V _r+0.75/2 V _k ) - V _L liquid volume - V _G dispersed gas volume - V _G ^* gas throughput at the gas distributor (given in m³/h) under standard conditions, 1 bar and 25°C) - V _G,d ^* gas throughput in downcomer (=V _G ^* ) - V _G,h ^* gas throughput in head (=V _G ^* ) - V _G,r ^* gas throughput in riser (V _G ^* (1+) - w _g gas velocity - w _G,rel relative gas velocity with respect to the liquid velocity w _L - w _G,d gas velocity in the downcomer (=w _G,rel –w _Ld ) - w _G,h gas velocity in the head (=w _G,rel ) (since wLh = o) - w _G,r gas velocity in the riser (=w _G,rel +w _Lr ) - w _L liquid velocity - w _L,d liquid velocity in the downcomer measured with mass flow meter - w _sg ·w _SL superficial gas and liquid velocities - first moment of the response curve - mean residence time Indices d downcomer - G gas phase - h head - L liquid phase - r riser - h hydrodynamic (upper position) Dedicated to the 65th birthday of Proffessor Fritz Wagner.The authors gratefully acknowledge the financial support by the Krupp Industrietechnik, Grevenbroich and the support of Pleser Co, Darmstadt. H. M. Rüffer thanks the Verband der Chemischen Industrie for a Fond der Chemie scholarship, and W. Liwei thanks the government of Lower Saxony for a graduate scholarship.     

Über den blutkreislauf der ephemeriden

Ohne ZusammenfassungErklärung der Zeichen an den Abbildungen A Antenne - a A Außenast der Tracheenkieme - bg F bindegewebige Fasern - bg S bindegewebiges Septum - Bl Blutkörperchen - bl A blind endigender Abschnitt des Blutraumes - BM Beugemuskulatur - BR Blutraum - BR c Blutraum, zentraler - BR cf Blutraum, zentrifugaler - BR cp Blutraum, zentripetaler - BR l Blutraum, lateraler - BR o Blutraum, oberer - BR v Blutraum, vorderer - C Cuticula - cf caudal vorspringende Falte - c G caudate Gefäße - Co Coxa - D Darmtraktus - d A 1 dorsale Ampulle Mesothorax - d A 2 dorsale Ampulle Metathorax - F Fettkörper - Fa Facettenauge - Fe Femur - Fl Flügel - Fl M Flügelmuskeln - Fls Flügelscheiden - FM Flugmuskulatur - G Gonade - Go Ganglion cerebrate - Go Ganglion opticum - Hy Hypodermis - HA Hinterrandader des Flügels - iA Innenast der Tracheenkieme - I h hintere Insertion der Membran - I v vordere Insertion der Membran - L Labrum - Lac Blutlacune - Li h hintere Ostienlippe - Li v vordere Ostienlippe - Lm Längsmuskulatur - Lu gefäßartiges Lumen - M Membran - m A mesenterienartige Aufhängung des Räckengefäßes - Me A äußere Membran der Herzwandung - Me I innere Membran der Herzwandung - Mss Muskelschicht - Mu Muskulatur - Mu qu querverlaufender Muskel - N Nervensystem bzw. Nerv - O Ostie - O vordere Ostien - O h hintere Ostien - Oc l laterale Ocelle - Oc m mediane Ocelle - Oe Ösophagus - PD Pericardialdiaphragma - PK Palméenscher Körper - Rgf Rückengefäß - S Sehne - SK Schwanzkammer - SM Streckmuskulatur - SO Sinnesorgan - sV schildartige Verbreiterung - Ta Tarsus - Te Tentorium - Th D thorakales Diaphragma - Ti Tibia - Tr Trachee - Tr K Tracheenkieme - Tro Trochanter - Tv H hinteres Taschenventil - Tv V vorderes Taschenventil - V Verdickung - VL Ventillippe - V vermutete Ventileinrichtung - Z Zellanhäufung     

Die mit der ausbildung des frontauges zusammenhängenden postembryonalen entwicklungsvorgänge im lobus opticus einiger ephemeridenmännchen

Ohne ZusammenfassungErklärung der Abkürzuugen äBh äuBerer Bildungsherd - äKs äuBere Kornerschicht - äKs ₁ äuBere Kornerschicht der Lamina ganglionaris - äKs ₂ äuBere Kornerschicht der Medulla externa - äKs ₃ äuBere Kornerschicht der Medulla interna - BmT Basalmembran des Turbanauges - Bz Blutzellen - Cf Commissuralfasern der Medulla interns - Che Chiasma externum - Chf Chiasmafasern - Chi Chiasma internum - Com Commissur - Dlg Deuterolamina ganglionaris - Dme Deuteromedulla externa - Dmi Deuteromedulla interna - F Frontauge - Fa Frontanteil des Auges - Gz Ganglienzellen - gGz große Ganglienzellen - iBh innerer Bildungsherd - iKs innere Kornerschicht - iKs ₁ innere Kornerschicht der Lamina ganglionaris - iKs ₂ innere Kornerschicht der Medulla externa - iKs ₃ innere Kornerschicht der Medulla interna - Lg Lamina ganglionaris - Md Mitteldarm - Me Medulla externa - Mi Medulla internal - Mt Mitose - Mt ₁ Mitose, aus der Neuroblasten hervorgehen - Mt ₂ Mitose, aus der Urganglienzellen hervorgehen - Mt ₃ Mitose, aus der Ganglienzellen hervorgehen - Nb Nervenbündel - Nbl Neuroblast - NbS Nervenbündel des Seitenauges - NbT Nervenbündel des Turbanauges - Ng Neuroglia - NLg Neuroblasten der Lamina ganglionaris - Nom Neurommatidium - Nst Neuroblastenstreifen zwischen Medulla externa and Medulla interna. bzw. Deuteromedulla externa und interna - Oc Ocellus - Osg Oberschlundganglion - P Pigment - Pr Protocerebrum - PS Pigmentschicht des Seitenauges - S Seitenauge - Sa Seitenanteil des Auges - Sb Sehfaserbündel, ins Protocerebrum ziehend - Stz Stützzelle - T Turbanauge - Ta Turbanaugenanlage - Tr Trachee - Trk Tracheenkern - Ugz Urganglienzelle - Usg Unterschlundganglion - Vd Vorderdarm