REARING THE BLACK HORNED TREE CRICKET, OECANTHUS NIGRICORNIS (ORTHOPTERA: GRYLLIDAE)

1979 ◽  
Vol 111 (6) ◽  
pp. 709-712 ◽  
Author(s):  
Paul D. Bell
Keyword(s):  
Relative Humidity ◽  
Second Generation ◽  
Egg Diapause ◽  
Unit Effort ◽  
Male Tree ◽  
Tree Cricket ◽  
Rearing Conditions ◽  
Oecanthus Nigricornis ◽  
First Time

AbstractBlack horned tree crickets, Oecanthus nigricornis (Walker), were continuously reared for the first time in the laboratory. Optimum rearing conditions per unit effort involved 2 months at −5 °C to terminate egg diapause, and subsequent incubation of eggs from infested raspberry cane segments at 27 °C and 45% relative humidity. Eggs began hatching in 2 weeks, and second generation eggs were obtained within 2.5 months. The best survival from egg to adult was 55%. The possibility that male tree crickets provide a nutritional investment in their progeny is discussed.

Multimodal communication by the black-horned tree cricket, Oecanthus nigricornis (Walker) (Orthoptera: Gryllidae)

1980 ◽  
Vol 58 (10) ◽  
pp. 1861-1868 ◽  
Author(s):  
Paul D. Bell
Keyword(s):  
Adult Male ◽  
Courtship Song ◽  
Multimodal Communication ◽  
Conspecific Male ◽  
Male Scent ◽  
Male Tree ◽  
Tree Cricket ◽  
Oecanthus Nigricornis ◽  
Vibratory Signals

Adult male tree crickets, Oecanthus nigricornis (Walker), employ acoustic, olfactory, and vibratory signals during mating. Females were attracted significantly (p < 0.001) to the conspecific courtship song and to conspecific male scent. Males had 63, 39, and 0% copulation success in normal, waxed-over metanotal gland, and nonsinger groups respectively. Males provide the females with metanotal glandular products and a subsequently ingested spermatophore. Females appear to select mates on the males' ability to communicate these nutritional investment capabilities.

scholarly journals Oecanthus salvii sp. nov. (Orthoptera: Gryllidae: Oecanthinae): A new tree cricket species from Modoc County in northeast California

2020 ◽  
Vol 29 (1) ◽  
pp. 91-99
Author(s):  
Nancy Collins ◽  
Ken R. Schneider
Keyword(s):  
New Species ◽  
Species Group ◽  
Tree Cricket ◽  
Subgenital Plate ◽  
The Common ◽  
Oecanthus Nigricornis ◽  
A New Species

A new species of Oecanthus is described from extreme northeast California. Oecanthus salviisp. nov. is currently known only from Lake Annie in Modoc County, California, and occurs on sagebrush (Artemisia) and rabbitbrush (Ericameria). It has the narrow tegmina, antennal markings, metanotal gland configuration, and trilling song found in the Oecanthus nigricornis species group. Song details and morphology, including the shape of the subgenital plate and copulatory blades, are provided in this paper. This new species has been given the common name of sage tree cricket.

scholarly journals Second-Generation Manganese(III) Porphyrins Bearing 3,5-Dichloropyridyl Units: Innovative Homogeneous and Heterogeneous Catalysts for the Epoxidation of Alkenes

Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 967 ◽  
Author(s):  
Neves ◽  
Rebelo ◽  
Faustino ◽  
Neves ◽  
Simões
Keyword(s):  
Heterogeneous Catalysts ◽  
Second Generation ◽  
Supported Catalyst ◽  
Catalytic Efficiency ◽  
Major Product ◽  
Aqueous Hydrogen Peroxide ◽  
Tert Butyl Hydroperoxide ◽  
Merrifield Resin ◽  
Catalytic Cycles ◽  
First Time

The synthesis, characterisation and homogeneous catalytic oxidation results of two manganese(III) porphyrins of the so-called second-generation of metalloporphyrin catalysts, containing one or four 3,5-dichloropyridyl substituents at the meso positions are reported for the first time. The catalytic efficiency of these novel manganese(III) porphyrins was evaluated in the oxidation of cyclooctene and styrene using aqueous hydrogen peroxide as the oxidant, under homogeneous conditions. High conversions were obtained in the presence of both catalysts, obtaining the corresponding epoxide as the major product. The asymmetric metalloporphyrin, chloro[5,10,15-tris(2,6-dichlorophenyl)-20-(3,5-dichloropyridin-4-yl)porphyrinate]manganese(III), CAT-4, evidences a similar activity to that obtained with the well-known and highly efficient second-generation metalloporphyrin catalyst, chloro[5,10,15,20-tetrakis(2,6-dichlorophenyl)porphyrinate]manganese(III), CAT-2. CAT-4 was covalently attached onto Merrifield resin and 3-bromopropylsilica supports. The solid materials obtained were characterized by several techniques including diffuse reflectance, UV—VIS spectrophotometry, SEM and XPS. The catalytic results for the oxidation of cyclooctene and styrene using the immobilized catalysts are also presented. The Merrifield-supported catalyst showed to be very efficient, leading to five catalytic cycles in the oxidation of cyclooctene, using tert-butyl hydroperoxide as the oxidant.

scholarly journals Outcomes with sequential FLT3-inhibitor-based therapies in patients with AML

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Musa Yilmaz ◽  
Mansour Alfayez ◽  
Courtney D. DiNardo ◽  
Gautam Borthakur ◽  
Tapan M. Kadia ◽  
...  
Keyword(s):  
Overall Survival ◽  
Phase Ii ◽  
Median Overall Survival ◽  
Second Generation ◽  
Single Agent ◽  
Response Rates ◽  
Flt3 Inhibitor ◽  
Flt3 Inhibitors ◽  
First Time

Abstract Background Second-generation FLT3-inhibitors (FLT3i) demonstrated single-agent composite CR rates (CRc) of 45–55% in patients with relapsed/refractory (R/R) FLT3-mutated AML in phase II/III trials. However, > 85% of patients treated were prior FLT3i naïve. The response rates to sequential FLT3i exposure remain poorly defined. Methods We retrospectively reviewed patients with FLT3-mutated AML between November 2006 and December 2019. Results In frontline patients treated with a FLT3i (cohort 1), the CRc rates and median overall survival (OS) with the first (n = 56), second (n = 32), and third FLT3i-based (n = 8) therapy were 77%, 31%, and 25%, and 16.7 months, 6.0 months, and 1.4 months, respectively. In patients receiving a FLT3i-based therapy for the first time in a R/R AML setting (cohort 2), the CRc rates and median OS were 45%, 21%, and 10%, and 7.9 months, 4.0 months, and 4.1 months with the first (n = 183), second (n = 89), and third/fourth (n = 29) FLT3i-based therapy, respectively. In cohort 1, CRc rates with single-agent FLT3i (n = 21) versus FLT3i-based combinations (n = 19) in second/third sequential FLT3i exposures were 19% versus 42%, respectively. In cohort 2, the CRc rates with single-agent FLT3i (n = 82) versus FLT3i-based combinations (n = 101) in first FLT3i exposure were 34% versus 53%, respectively, and those with single-agent FLT3i (n = 63) versus FLT3i-based combinations (n = 55) in second/third/fourth sequential FLT3i exposures were 13% versus 25%, respectively. Conclusion CRc rates drop progressively with sequential exposure to FLT3i’s in FLT3-mutated AML. In all settings, CRc rates were higher with FLT3i-based combinations compared with single-agent FLT3i therapy in similar FLT3i exposure settings.

Drying technology of mesquite pods (Prosopis laevigata) and microstructural insights

2020 ◽  
Vol 122 (9) ◽  
pp. 2953-2963
Author(s):  
Sadoth Sandoval Torres ◽  
Daniel Lopez Cravioto ◽  
Juan Rodríguez Ramírez ◽  
Lilia L. Méndez Lagunas ◽  
Luis Gerardo Barriada Bernal ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Moisture Content ◽  
Food Industry ◽  
Characteristic Curve ◽  
Drying Process ◽  
Sem Images ◽  
Content Type ◽  
Milling Operation ◽  
Drying Technology ◽  
First Time

PurposeMesquite pods offer a high nutritional content; A flour can be produced from them; nevertheless, the moisture content makes the milling process difficult. Then, before the milling operation a drying process must be implemented, but drying technology must be studied in order to characterise the process and identify the effect of drying temperature on the magnitude of drying rate.Design/methodology/approachProsopis Laevigata pods were collected in Oaxaca (Southern of Mexico) and they were dried. Three stages of maturity were identified and pods in the stage three of maturity were dried by forced convection. The internal structure of the pods was analyzed by scanning electron microscopy (SEM). The pods were dried in a tunnel dryer at 40, 50, 60 and 70° C, 10% relative humidity and air velocity of 2.6 m/s. From experimental data, a lumped analysis was conducted for drying.FindingsWe found that the internal microstructure of this material is a limiting factor for moisture migration. In order to reduce the moisture content in the pods, a minimum air temperature of 60° C must be applied. The characteristic drying curve shows a good agreement with the experimental drying kinetics. The nutritional composition (carbohydrates, sugar and protein) of pods reveals important applications for the food industry.Practical implicationsThe mesquite pods are important ethnic foods. In order to obtain flour, the drying of pods is mandatory. Drying must be applied in stage three of maturity which can be identified based on color changes and moisture content. The moisture content affects the performance of milling operation, then a minimum drying temperature of 60° C and low relative humidity must be applied. SEM images show the complex microstructure of the pods which hinders the moisture diffusion. The drying characteristic curve was deduced for the first time; it helps to understand the drying behavior of pods. The chemical composition of mesquite pods reveals interesting applications for the food industry. The methodology for drying is useful for researchers and producers.Originality/valueMezquite pods is an interesting ethnic food for people with celiac disease. This is the first time a research paper describes the drying process at detail. The SEM images, the convective drying operation and the characteristic curve are presented for the first time. The information will be useful for the industry and academia.

A Review of the Ion Beam Assisted Deposition Researches towards Industrialization for the Second Generation High Temperature Superconducting Wire Fabrication

2013 ◽  
Vol 745-746 ◽  
pp. 225-232 ◽  
Author(s):  
Feng Feng ◽  
Ti Ming Qu ◽  
Kai Shi ◽  
Rong Xia Huang ◽  
Wei Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Second Generation ◽  
Ion Beam ◽  
Buffer Layers ◽  
Metallic Substrates ◽  
High Temperature Superconducting ◽  
Ion Beam Assisted Deposition ◽  
Wire Fabrication ◽  
First Time ◽  
Ybco Superconducting Films

on beam assisted deposition (IBAD) is an important technique to fabricate the second generation high temperature superconducting (2G HTS) wires. Among the fabrication routes of 2G HTS long wires, IBAD route achieved the best performance in recent years. IBAD was adopted in this field in 1991 to obtain biaxially textured buffer layers, which helped to deposit high quality YBCO superconducting films on metallic substrates for the first time. Series of experimental and industrial researches on IBAD were carried out by many groups worldwide. And in the researches lasting for over two decades, the focused material for IBAD was changed from Yttria-Stabilized Zirconia (YSZ), Gd2Zr2O7 (GZO) to MgO. In this paper, the research progresses and the main achievements were briefly reviewed.

OPPORTUNISTIC FEEDING BY THE FEMALE TREE CRICKET, OECANTHUS NIGRICORNIS (ORTHOPTERA: GRYLLIDAE)

1980 ◽  
Vol 112 (4) ◽  
pp. 431-432 ◽  
Author(s):  
Paul D. Bell
Keyword(s):  
Mating Behavior ◽  
Copulatory Behavior ◽  
Mating Strategy ◽  
Male Courtship ◽  
Female Reproduction ◽  
Tree Cricket ◽  
Female Tree ◽  
Oecanthus Nigricornis ◽  
Opportunistic Feeding

Intruding Oecanthus nigricornis (Walker) females stole nutritional glandular secretions from males engaged in post-copulatory behavior with their mates. This mating strategy may enhance female reproduction.Mating behavior of Oecanthus spp. begins with elaborate male courtship involving vibratory, acoustic, and olfactory signalling. The female mounts the male, with copulation occurring soon after. During courtship and after copulation the female remains mounted and is provided with male metanotal glandular secretions. These nutritional secretions and the consumed spermatophore increase reproduction (Bell 1979; in press).

Female Choice for an Indicator of Male Size in the Song of the Black-Horned Tree Cricket, Oecanthus nigricornis (Orthoptera: Gryllidae: Oecanthinae)

Evolution ◽  
1996 ◽  
Vol 50 (6) ◽  
pp. 2400 ◽  
Author(s):  
William D. Brown ◽  
Julie Wideman ◽  
Maydianne C. B. Andrade ◽  
Andrew C. Mason ◽  
Darryl T. Gwynne
Keyword(s):  
Female Choice ◽  
Male Size ◽  
Tree Cricket ◽  
Oecanthus Nigricornis
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