Fecundity, Number of Diapause Eggs, and Egg Size of Successive Generations of the Blackheaded Fireworm (Lepidoptera: Tortricidae) on Cranberries

1993 ◽  
Vol 22 (4) ◽  
pp. 818-823 ◽  
Author(s):  
Sheila M. Fitzpatrick ◽  
James T. Troubridge
Keyword(s):  
Egg Size ◽  
Blackheaded Fireworm ◽  
Successive Generations

Through the Lens of Gurdjieff

2016 ◽  
Vol 11 (1) ◽  
pp. 36-52
Author(s):  
Michael Pittman
Keyword(s):  
Participant Observation ◽  
Field Research ◽  
Spiritual Transformation ◽  
Spiritual Practice ◽  
Asia Minor ◽  
Eastern Asia ◽  
The Caucasus ◽  
Successive Generations ◽  
Spiritual Conversation

G. I. Gurdjieff (c.1866–1949) was born in Gyumri, Armenia and raised in the Caucasus and eastern Asia Minor. He also traveled extensively throughout Turkey to places of pilgrimage and in search of Sufi teachers. Through the lens of Gurdjieff’s notion of legominism, or the means by which spiritual teachings are transmitted from successive generations, this article explores the continuing significance of spiritual practice and tradition and the ways that these forms remain relevant in shaping contemporary trends in spirituality. Beginning with Gurdjieff’s use of legominism, the article provides reflection on some early findings done in field research in Turkey— through site visits, interviews and participant-observation—conducted in the summers of 2014 and 2015. The aim of the project is both to meet individuals and groups, particularly connected to Sufism, that may have some contact with the influences that Gurdjieff would have been familiar with, and to visit some of the sites that were part of Gurdjieff’s early background and which served to inform his work. Considerations of contemporary practices include the view of spiritual transmission, and practices of pilgrimage, prayer and sohbet, or spiritual conversation, in an ongoing discourse about spiritual transformation.

Editorial

2013 ◽  
Vol 1 (2) ◽  
pp. 1-3
Author(s):  
João José Pinto Ferreira ◽  
Anne-Laure Mention ◽  
Marko Torkkeli
Keyword(s):  
Economic Development ◽  
Education Research ◽  
Research And Development ◽  
Research Integrity ◽  
Academic Community ◽  
Human Knowledge ◽  
Academic Institutions ◽  
Current State ◽  
State Of Research ◽  
Successive Generations

The expansion of human knowledge in all areas is largely the outcome of the activity of academic institutions and the result of their mission to contribute to the cultural, intellectual and economic development of the society, involving education, research and university extension activities. For many years, the academic community has been organizing itself in all different ways to respond to current and future needs, ensuring research integrity and recognition, and building on successive generations of peers to validate and support the launching and development of novel research streams. We owe the current state of research and development of our society to generations of scholars and scientists that have brought all of us here.(...)

Effects of Predation and Trophic Conditions on the Reproduction of Tylototriton verrucosus (Caudata: Salamandridae) in Darjeeling

2011 ◽  
Vol 4 (2) ◽  
pp. 163-169 ◽  
Author(s):  
Ritwik Dasgupta
Keyword(s):  
Frequency Distribution ◽  
Primary Productivity ◽  
Egg Size ◽  
Zooplankton Abundance ◽  
Trophic Conditions ◽  
Size Frequency Distribution ◽  
Size Frequency ◽  
High Predation ◽  
Hatchling Size ◽  
Predation Rates

The facts that small hatchlings emerged from small eggs laid under high predation levels prevailing at the lower altitudes of distribution of this species in Darjeeling while larger hatchlings emerged from larger eggs laid under lower levels of predation at higher altitudes, show that predation is not selected for large egg and initial hatchling size in this salamandrid species. Metamorphic size was small under high predation rates because this species relied on crypsis for evading predators. Egg and hatchling size are related inversely to levels of primary productivity and zooplankton abundance in lentic habitats. Hatchling sizes are related positively to egg size and size frequency distribution of zooplankton. Small egg and small hatchling size have been selected for at the lower altitudes of distribution of this salamandrid in Darjeeling because predation rates increased in step with improvement in trophic conditions at the lower altitudes.

Familial And Constitutional Moderate Bleeding Disorder Associated With Defective Platelet Cyclo-Oxygenase

1981 ◽  
Author(s):  
C Lecrubier ◽  
F Fouque ◽  
M Chignard ◽  
M H Horellou ◽  
J Conard ◽  
...  
Keyword(s):  
Autosomal Dominant ◽  
Atp Release ◽  
Rabbit Aorta ◽  
Total Radioactivity ◽  
Bleeding Disorder ◽  
Similar Extent ◽  
Synthetase Deficiency ◽  
Successive Generations ◽  
Second Wave ◽  
Rule Out

Three family members from two successive generations showed a moderate bleeding disorder. The bleeding times (Duke and Ivy-Borchgrevink) were both constantly prolonged. Platelet aggregation induced by ADP and adrenaline showed no second wave; collagen at low to moderate concentrations failed to aggregate and release ATP whereas higher amounts aggregated and released. Aggregation and release due to thrombin, ristocetin and synthetic epoxy derivatives (U 44069 and U 46619) were normal. Arachidonate (A.A.) was inactive and was not converted into thromboxane (TX) A2 activity evaluated on the rabbit aorta strip. The patient’s platelets did not respond to A.A. when PRP from an aspirin treated control was added. Platelet phospholipids (PL) were labelled by 14C - A.A. before stimulation by thrombin (T). Radioactivity of the PL of the propositus' platelets was affected with T to a similar extent as 5 laboratory controls, indicating that the phospholipase activity was not impaired. In contrast, no TXB2 was found: 0.9 p. cent as compared to 6 p. cent of total radioactivity in controls.Our data suggest a deficit in cyclo-oxygenase particularly since the levels of PGE2, PGF2a and PGD2 were within the limits of detection. These results seem to rule out the possibility of a TX-synthetase deficiency with excessive production of anti-aggregating PGs. This study suggests that transmission is autosomal dominant and confirms that cyclo-oxygenase is not needed for aggregation and ATP-release by high amounts of collagen.

scholarly journals Latitudinal Variation in Ayu Egg Size

1993 ◽  
Vol 59 (12) ◽  
pp. 2087-2087 ◽  
Author(s):  
Kei'ichiroh Iguchi
Keyword(s):  
Egg Size ◽  
Latitudinal Variation

scholarly journals Hurry-up and hatch: selective filial cannibalism of slower developing eggs

2008 ◽  
Vol 4 (2) ◽  
pp. 160-162 ◽  
Author(s):  
Hope Klug ◽  
Kai Lindström
Keyword(s):  
Egg Size ◽  
Adaptive Strategy ◽  
Filial Cannibalism ◽  
Sand Goby ◽  
Pomatoschistus Minutus ◽  
Fitness Consequences

Filial cannibalism (the consumption of one's own offspring) is thought to represent an adaptive strategy in many animals. However, little is known about the details of which offspring are consumed when a parent cannibalizes. Here, we examined patterns of within-brood filial cannibalism in the sand goby ( Pomatoschistus minutus ). Males spawned sequentially with two females, and we asked whether males cannibalized selectively with regard to egg size or the order in which eggs were received. Males preferentially consumed the larger eggs of the second female they spawned with. Because larger eggs took longer to hatch, and because female 2's eggs were up to 1 day behind those of female 1, such preferential cannibalism might allow males to decrease the time spent caring for the current brood and re-enter the mating pool sooner. More work is needed to understand the fitness consequences of such selective cannibalism.

scholarly journals Adult body growth and reproductive investment vary markedly within and across Atlantic and Pacific herring: a meta-analysis and review of 26 stocks

2021 ◽  
Author(s):  
Thassya C. dos Santos Schmidt ◽  
Doug E. Hay ◽  
Svein Sundby ◽  
Jennifer A. Devine ◽  
Guðmundur J. Óskarsson ◽  
...  
Keyword(s):  
Egg Size ◽  
Meta Analysis ◽  
Reproductive Investment ◽  
Body Growth ◽  
Clupea Harengus ◽  
Pacific Herring ◽  
Atlantic Herring ◽  
Additional Information ◽  
Trade Offs ◽  
Investment In Reproduction

AbstractLife-history traits of Pacific (Clupea pallasii) and Atlantic (Clupea harengus) herring, comprising both local and oceanic stocks subdivided into summer-autumn and spring spawners, were extensively reviewed. The main parameters investigated were body growth, condition, and reproductive investment. Body size of Pacific herring increased with increasing latitude. This pattern was inconsistent for Atlantic herring. Pacific and local Norwegian herring showed comparable body conditions, whereas oceanic Atlantic herring generally appeared stouter. Among Atlantic herring, summer and autumn spawners produced many small eggs compared to spring spawners, which had fewer but larger eggs—findings agreeing with statements given several decades ago. The 26 herring stocks we analysed, when combined across distant waters, showed clear evidence of a trade-off between fecundity and egg size. The size-specific individual variation, often ignored, was substantial. Additional information on biometrics clarified that oceanic stocks were generally larger and had longer life spans than local herring stocks, probably related to their longer feeding migrations. Body condition was only weakly, positively related to assumingly in situ annual temperatures (0–30 m depth). Contrarily, body growth (cm × y−1), taken as an integrator of ambient environmental conditions, closely reflected the extent of investment in reproduction. Overall, Pacific and local Norwegian herring tended to cluster based on morphometric and reproductive features, whereas oceanic Atlantic herring clustered separately. Our work underlines that herring stocks are uniquely adapted to their habitats in terms of trade-offs between fecundity and egg size whereas reproductive investment mimics the productivity of the water in question.

scholarly journals Microstructure and Properties of TiAl-Based Alloys Melted in Graphite Crucible

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 669
Author(s):  
Wojciech Szkliniarz ◽  
Agnieszka Szkliniarz
Keyword(s):  
Coefficient Of Thermal Expansion ◽  
Graphite Crucible ◽  
Strength Properties ◽  
Operating Conditions ◽  
Vacuum Induction Furnace ◽  
Intermetallic Alloys ◽  
Plastic Properties ◽  
Similar Chemical ◽  
Crucible Furnace ◽  
Successive Generations

This paper presents the chemical and phase composition, microstructure, and selected properties both at room temperature and at the temperature corresponding to the expected operating conditions of three successive generations of TiAl-based alloys (Ti-47Al-2W-0.5Si, Ti-45Al-8Nb-0.5(B,C), and Ti-45Al-5Nb-2Cr-1Mo-0.5(B,C)-0.2Si) melted in a vacuum induction furnace with high-density isostatic pressed graphite crucibles. The obtained results of mechanical and physical properties of the produced alloys were compared to the properties of reference alloys with similar chemical composition and melted in a cold copper crucible furnace. The effect of increased carbon content in the produced alloys due to the degradation of the graphite crucible during melting is higher strength properties, lower plastic properties, higher coefficient of thermal expansion, and improved creep resistance. It was shown that the proposed technology could be successfully used in the production of different generation TiAl-based intermetallic alloys.

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