Alimentary canal of fifth instar larvae of Lymantria dispar (Lepidoptera: Erebidae, Lymatriinae)

Here, the alimentary canal of fifth instar larvae of the gypsy moth (Lymantria dispar) was re-investigated with light microscopy (LM), and for the first time with laser scanning confocalmicroscopy (LSCM) and scanning electronmicroscopy (SEM). We describe morphological characteristics and provide morphometric data. Well-developed dilator muscles and Malpighian bladders suggest a high capacity for food propulsion, excretion, absorption, and detoxification. The epithelium of the alimentary canal of L. dispar is histologically simple and that of the midgut is composed of columnar, goblet, and regenerative cells. Particular arrangement of the intima of crop with a central ventral region recalling a ladder and numerous folds was detected, indicating the capability for a large increase in volume to store food. Numerous spinules were observed on the cuticular intima of pylorus and spinules of a different type were observed on the pyloric valve, and these might assist in propelling the feces.

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Alimentary canal of the lesser house fly, Fannia canicularis (Linnaeus) (Diptera: Fanniidae)

Entomologica Fennica ◽

10.33338/ef.7866 ◽

2013 ◽

Vol 24 (1) ◽

pp. 35-42

Author(s):

Yi-Ou Chen ◽

Dong Zhang ◽

Qi-Ke Wang

Keyword(s):

Alimentary Canal ◽

Morphological Characteristics ◽

House Fly ◽

Malpighian Tubules ◽

Morphometric Data ◽

Long Time ◽

Swarming Behavior ◽

First Time ◽

Fannia Canicularis

The alimentary canal of Fannia canicularis was studied intensively for the first time, highlighting the description of morphological characteristics and providing detailed morphometric data. Two pairs of Malpighian tubules with considerably different length were found which has been rarely documented for Calyptratae flies before. Furthermore, stout cardia and sinewy crop of the samples were ob- served and supposed to be responsible for the energy needed to support the long- time swarming behavior of the species.

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The First Record of Parthenitae and Cercariae of Plagiorchis Multiglandularis (Trematoda, Plagiorchiidae) in Lymnaea Stagnalis in Ukraine

Vestnik Zoologii ◽

10.2478/vzoo-2018-0030 ◽

2018 ◽

Vol 52 (4) ◽

pp. 289-294

Author(s):

E. P. Zhytova

Keyword(s):

Lymnaea Stagnalis ◽

Morphological Characteristics ◽

First Record ◽

Morphometric Data ◽

Diagnostic Characters ◽

Plagiorchis Elegans

Abstract Parthenitae and cercariae of Plagiorchis. multiglandularis Semenov, 1927 are recorded in Lymnaea stagnalis (Linnaeus, 1758) for the fi rst time in Ukraine; their morphological characteristics are specifi ed. Diagnostic characters of P. multiglandularis parthenitae and cercariae found in Ukrainian Polissia are compared with those from other regions. To confi rm the validity of the species, a comparison of the morphometric data of this trematode larvae with the cercariae of Plagiorchis elegans (Rudolphi, 1802) Braun, 1902, found in molluscs L. stagnalis, L. ralustris and L. corvuses, was performed. It was determined that P. multiglandularis cercariae diff er from those of P. elegans in size and position of the penetration glands.

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Influence of Metal Substitution on the Pressure-Induced Phase Change in Flexible Zeolitic Imidazolate Frameworks

10.26434/chemrxiv.7108706.v1 ◽

2018 ◽

Author(s):

C. Michael McGuirk ◽

Tomče Runčevski ◽

Julia Oktawiec ◽

Ari Turkiewicz ◽

mercedes K. taylor ◽

...

Keyword(s):

Phase Change ◽

Single Crystal ◽

Gas Adsorption ◽

High Capacity ◽

Phase Changes ◽

Zeolitic Imidazolate Frameworks ◽

Metal Substitution ◽

Heat Management ◽

Metal Organic ◽

First Time

Metal–organic frameworks that display step-shaped adsorption profiles arising from discrete pressure-induced phase changes are promising materials for applications in both high-capacity gas storage and energy-efficient gas separations. The thorough investigation of such materials through chemical diversification, gas adsorption measurements, and in situ structural characterization is therefore crucial for broadening their utility. We examine a series of isoreticular, flexible zeolitic imidazolate frameworks (ZIFs) of the type M(bim)2 (SOD; M = Zn (ZIF-7), Co (ZIF-9), Cd (CdIF-13); bim– = benzimidazolate), and elucidate the effects of metal substitution on the pressure-responsive phase changes and the resulting CO2 and CH4 step positions, pre-step uptakes, and step capacities. Using ZIF-7 as a benchmark, we reexamine the poorly understood structural transition responsible for its adsorption steps and, through high-pressure adsorption measurements, verify that it displays a step in its CH4 adsorption isotherms. The ZIF-9 material is shown to undergo an analogous phase change, yielding adsorption steps for CO2 and CH4 with similar profiles and capacities to ZIF-7, but with shifted threshold pressures. Further, the Cd2+ analogue CdIF-13 is reported here for the first time, and shown to display adsorption behavior distinct from both ZIF-7 and ZIF-9, with negligible pre-step adsorption, a ~50% increase in CO2 and CH4 capacity, and dramatically higher threshold adsorption pressures. Remarkably, a single-crystal-to-single-crystal phase change to a pore-gated phase is also achieved with CdIF-13, providing insight into the phase change that yields step-shaped adsorption in these flexible ZIFs. Finally, we show that the endothermic phase change of these frameworks provides intrinsic heat management during gas adsorption.

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Nanostructured intermetallic InSb as a high-capacity and high-performance negative electrode for sodium-ion batteries

Sustainable Energy & Fuels ◽

10.1039/d1se00386k ◽

2021 ◽

Author(s):

Irshad Mohammad ◽

Lucie Blondeau ◽

Eddy Foy ◽

Jocelyne Leroy ◽

Eric Leroy ◽

...

Keyword(s):

Intermetallic Compound ◽

High Performance ◽

High Capacity ◽

Negative Electrode ◽

Sodium Ion ◽

Sodium Ion Batteries ◽

Negative Electrodes ◽

First Time

Following the trends of alloys as negative electrodes for Na-ion batteries, the sodiation of the InSb intermetallic compound was investigated for the first time. The benefit of coupling Sb with...

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First instar larvae of endemic Australian Miltogramminae (Diptera: Sarcophagidae)

Scientific Reports ◽

10.1038/s41598-020-80139-x ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Krzysztof Szpila ◽

Kinga Walczak ◽

Nikolas P. Johnston ◽

Thomas Pape ◽

James F. Wallman

Keyword(s):

Laser Scanning ◽

Instar Larva ◽

Laser Scanning Microscopy ◽

Confocal Laser ◽

Maxillary Palpus ◽

Larval Morphology ◽

First Instar ◽

Morphological Differences ◽

Thoracic And Abdominal ◽

First Time

AbstractThe first instar larva of a species of the Australian endemic genus Aenigmetopia Malloch is described for the first time, along with the first instar larvae of three other Australian species representing the genera Amobia Robineau-Desvoidy and Protomiltogramma Townsend. Larval morphology was analysed using a combination of light microscopy, confocal laser scanning microscopy and scanning electron microscopy. The following morphological structures are documented: pseudocephalon, antennal complex, maxillary palpus, facial mask, modifications of thoracic and abdominal segments, anal region, spiracular field, posterior spiracles and details of the cephaloskeleton. Substantial morphological differences are observed between the three genera, most notably in the labrum and mouthhooks of the cephaloskeleton, sensory organs of the pseudocephalon, spinulation, sculpture of the integument and form of the spiracular field. The first instar larval morphology of Aenigmetopia amissa Johnston, Wallman, Szpila & Pape corroborates the close phylogenetic affinity of Aenigmetopia Malloch with Metopia Meigen, inferred from recent molecular analysis. The larval morphology of Amobia auriceps (Baranov), Protomiltogramma cincta Townsend and Protomiltogramma plebeia Malloch is mostly congruent with the morphology of Palaearctic representatives of both genera.

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Infection of human CD34+ progenitor cells with Bartonella henselae results in intraerythrocytic presence of B henselae

Blood ◽

10.1182/blood-2004-12-4670 ◽

2005 ◽

Vol 106 (4) ◽

pp. 1215-1222 ◽

Cited By ~ 56

Author(s):

Tanja Mändle ◽

Hermann Einsele ◽

Martin Schaller ◽

Diana Neumann ◽

Wichard Vogel ◽

...

Keyword(s):

Progenitor Cells ◽

Laser Scanning ◽

Bartonella Henselae ◽

Bacterial Pathogen ◽

Erythroid Differentiation ◽

Laser Scanning Microscopy ◽

Confocal Laser ◽

Facs Analysis ◽

Human Cd34 ◽

First Time

Abstract Although there is evidence that endothelial cells are important targets for human pathogenic Bartonella species, the primary niche of infection is unknown. Here we elucidated whether human CD34+ hematopoietic progenitor cells (HPCs) internalize B henselae and may serve as a potential niche of the pathogen. We showed that B henselae does not adhere to or invade human erythrocytes. In contrast, B henselae invades and persists in HPCs as shown by gentamicin protection assays, confocal laser scanning microscopy (CLSM), and electron microscopy (EM). Fluorescence-activated cell sorting (FACS) analysis of glycophorin A expression revealed that erythroid differentiation of HPCs was unaffected following infection with B henselae. The number of intracellular B henselae continuously increased over a 13-day period. When HPCs were infected with B henselae immediately after isolation, intracellular bacteria were subsequently detectable in differentiated erythroid cells on day 9 and day 13 after infection, as shown by CLSM, EM, and FACS analysis. Our data provide, for the first time, evidence that a bacterial pathogen is able to infect and persist in differentiating HPCs, and suggest that HPCs might serve as a potential primary niche in Bartonella infections.

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Découverte d’une nouvelle population de Rhithrogena delphinensis Sowa & Degrange, 1987, dans le massif des Arves, et compléments à la description de la larve (Ephemeroptera, Heptageniidae)

Bulletin de la Société entomologique de France ◽

10.32475/bsef_2218 ◽

2021 ◽

Vol 126 (4) ◽

pp. 401-420

Author(s):

Bertrand Launay ◽

Julien Barnasson ◽

Juliette Becquet ◽

Michel Brulin ◽

Sophie Cauvy-Fraunie ◽

...

Keyword(s):

Drainage Basin ◽

Morphological Characteristics ◽

Western Alps ◽

Coi Gene ◽

Morphological Description ◽

Base Pairs ◽

Northern Flank ◽

Ecological Requirements ◽

First Time ◽

Existing Data

Discovery of a new population of Rhithrogena delphinensis Sowa & Degrange, 1987, in the Arves Massif, and additions to the morphological description of the larva (Ephemeroptera, Heptageniidae). Rhithrogena delphinensis, described originally on the basis of four larvae from the Western Alps, south of the Arves Massif and from the northern flank of the Ecrins Massif, had not been captured again since 1986. Here, we report the discovery of a new population from river Arvan, whose drainage basin is located between the Grandes Rousses Massif and the northern flank of the Arves Massif. This newly discovered population seems abundant in numbers, and reveals the particular ecological requirements of the species as well as its dependence on glacier fed or nival streams. The morphological characteristics of the larvae are described in detail, and illustrated by photographs. The variability of some of the proposed identification criteria is discussed, and a key to the identification of the Rhithrogena species from the alpestris group of the Western Alps, to which R. delphinensis belongs, is provided. Finally, a portion of 658 base pairs of the COI gene of R. delphinensis is sequenced for the first time and compared to already existing data on the alpestris group in the Western Alps.

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A High Capacity, Room Temperature, Hybrid Flow Battery Consisting of Liquid Na-Cs Anode and Aqueous NaI Catholyte

Batteries ◽

10.3390/batteries4040060 ◽

2018 ◽

Vol 4 (4) ◽

pp. 60 ◽

Cited By ~ 1

Author(s):

Caihong Liu ◽

Leon Shaw

Keyword(s):

Room Temperature ◽

Electrochemical Impedance ◽

Coulombic Efficiency ◽

High Capacity ◽

High Energy ◽

Flow Battery ◽

Membrane Interfaces ◽

Number Of Cycles ◽

Novel Concept ◽

First Time

In this study, we have proposed a novel concept of hybrid flow batteries consisting of a molten Na-Cs anode and an aqueous NaI catholyte separated by a NaSICON membrane. A number of carbonaceous electrodes are studied using cyclic voltammetry (CV) for their potentials as the positive electrode of the aqueous NaI catholyte. The charge transfer impedance, interfacial impedance and NaSICON membrane impedance of the Na-Cs ‖ NaI hybrid flow battery are analyzed using electrochemical impedance spectroscopy. The performance of the Na-Cs ‖ NaI hybrid flow battery is evaluated through galvanostatic charge/discharge cycles. This study demonstrates, for the first time, the feasibility of the Na-Cs ‖ NaI hybrid flow battery and shows that the Na-Cs ‖ NaI hybrid flow battery has the potential to achieve the following properties simultaneously: (i) An aqueous NaI catholyte with good cycle stability, (ii) a durable and low impedance NaSICON membrane for a large number of cycles, (iii) stable interfaces at both anode/membrane and cathode/membrane interfaces, (iv) a molten Na-Cs anode capable of repeated Na plating and stripping, and (v) a flow battery with high Coulombic efficiency, high voltaic efficiency, and high energy efficiency.

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Coronary artery myogenic response in a genetic model of hypertrophic cardiomyopathy

AJP Heart and Circulatory Physiology ◽

10.1152/ajpheart.00606.2002 ◽

2002 ◽

Vol 283 (6) ◽

pp. H2244-H2249 ◽

Cited By ~ 10

Author(s):

Henrik H. Petersen ◽

Jonathan Choy ◽

Brian Stauffer ◽

Farzad Moien-Afshari ◽

Christian Aalkjaer ◽

...

Keyword(s):

Transgenic Mouse ◽

Genetic Model ◽

Morphological Characteristics ◽

Myogenic Tone ◽

Chain Gene ◽

Myogenic Response ◽

Cardiac Phenotype ◽

First Time ◽

Pressure Myograph ◽

Intravascular Pressure

Hypertrophic cardiac myopathy (HCM) is the leading cause of mortality in young athletes. Abnormalities in small intramural coronary arteries have been observed at autopsy in such subjects. The walls of these intramural vessels, especially in the ventricular septum, are thickened, and the lumen frequently appears narrowed. Whether these morphological characteristics have functional correlates is unknown. We studied coronary myogenic tone in a transgenic mouse model of HCM that has mutations in the cardiac α-myosin heavy chain gene. This transgenic mouse has a cardiac phenotype that resembles that occurring in humans. We examined the possible vascular contributions to the pathology of HCM. Septal arteries from 3- and 11-mo-old wild-type (WT) and transgenic (TG) mice were studied on a pressure myograph. The myogenic response to increased intravascular pressure in older animals was significantly reduced [maximal constriction: 32 ± 4% (TG) and 46 ± 4% (WT), P < 0.05]. After inhibition of endothelin receptors with bosentan, both WT and TG mice had similar increases in myogenic constriction. The sensitivity to exogenous endothelin was significantly reduced in TG mice, suggesting that the reduced myogenic constriction in HCM was due to reduced receptor sensitivity. In conclusion, we show for the first time that 1) myogenic tone in the coronary septal artery of the mouse is regulated by a basal release of endothelin, and 2) pressure-induced myogenic activation is attenuated in HCM, possibly consequent to a reduction in endothelin responsiveness. The associated reduction in coronary vasodilatory reserve may increase susceptibility to ischemia and arrhythmias.

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Reproduction and population structure of the sea cucumber Holothuria tubulosa in the Dardanelles Strait, Turkey

Mediterranean Marine Science ◽

10.12681/mms.1360 ◽

2015 ◽

Vol 17 (1) ◽

pp. 47 ◽

Cited By ~ 3

Author(s):

H. DERELİ ◽

S. TÜRK ÇULHA ◽

M. ÇULHA ◽

B. H. ÖZALP ◽

A. A. TEKİNAY

Keyword(s):

Population Density ◽

Gonadosomatic Index ◽

Morphological Characteristics ◽

Environmental Parameters ◽

Population Characteristics ◽

High Positive Correlation ◽

Mediterranean Populations ◽

Reproductive Patterns ◽

First Time ◽

The Relationship

In this study, Holothuria tubulosa Gmelin 1791 was investigated from April 2013 to March 2014 in the Dardanelles Strait, to outline the morphological characteristics, reproductive patterns and the relationship between population characteristics and environmental parameters. Between 15 and 30 individuals of this species were sampled monthly from three stations. There was a negative allometry between length and weight, being gutted weight the most reliable measurement for this species. Reproductive patterns of the species were identified the first time for Turkish coasts. By macroscopic examination of the gonads, smallest sizes (gutted length) were measured as 8.4 and 8.1 cm for female and male, respectively. Sex ratio was calculated as 1: 1.1 with differences between seasons. The reproduction of sea cucumbers occurred between August and September after Gonadosomatic Index (GSI) values reached their maximum in July. The species was found down to 10 m depth with a population density of 0.21 / m2, which was rather low compared to previously reported values for Mediterranean populations of this species. There was a high positive correlation between population density and GSI of the species. The highest population density was observed where the largest sea grass meadows are found.

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