scholarly journals Analysis of the Microsatellite Variation in the Common Hybrid Between Russian Sturgeon (Acipenser Gueldenstaedtii Brandt and Ratzeburg, 1833) and Siberian Sturgeon (Acipenser Baerii Brandt, 1869) from Aquaculture

2013 ◽  
Vol 15 (2) ◽  
pp. 117-124
Author(s):  
Sergiu Georgescu ◽  
Oana Canareica ◽  
Andreea Dudu ◽  
Marieta Costache
Keyword(s):  
Microsatellite Loci ◽  
Common Species ◽  
Nuclear Markers ◽  
Microsatellite Variation ◽  
Acipenser Baerii ◽  
Entire Genome ◽  
Acipenser Gueldenstaedtii ◽  
The Common ◽  
High Level ◽  
Individual Locus

ABSTRACT Sturgeons such as Acipenser baerii and Acipenser gueldenstaedtii are the most common species farm raised worldwide in aquaculture, because of the dwindling natural sources of caviar and meat. Also, these species can easily participate in the formation of an intraspecific hybrid with a great potential for growth in aquaculture. Microsatellites are nuclear markers consisting of short repetitive sequence, dispersed across the entire genome with characteristics such as relatively small size and high level of polymorphism. The aims of the present study were to optimize a protocol for microsatellite multiplexing and analysis of genetic diversity in hybrid sturgeons farmed in Romania. Genomic DNA was isolated from fins, and four pairs of primers were designed to amplify microsatellite loci: LS 19, LS 68, Aox 9, and Aox 45. Amplification of the microsatellite loci was carried out in one 3-Plex reaction for LS 19, LS 68, and Aox 9, and monoplex reaction for Aox 45. For an individual locus we obtained four alleles for Aox 45, eleven alleles for Aox 9, six alleles for LS 68, and eight alleles for LS 19. The results will be applied to test the broodstocks at Romanian hatcheries and to increase the efficiency of breeding.

scholarly journals INFLUENCE OF SURFAGON INJECTIONS ON BIOCHEMICAL COMPOSITION OF BLOOD AND STRUCTURAL TRANSFORMATIONS OF OVARIES IN HYBRID FEMALES OF RUSSIAN STURGEON × LENA STURGEON (ACIPENSER GUELDENSTAEDTII BRANDT, 1833 × ACIPENSER BAERII BRANDT, 1869) IN RECIRCULATED AQUACULTURE SYSTEMS

2018 ◽  
pp. 117-131
Author(s):  
Marina Nikolaevna Sorokina ◽  
Petr Petrovich Geraskin ◽  
Vadim Grigoriev ◽  
Anisia Victorovna Dubovskaya ◽  
Olga Aleksandrovna Levina ◽  
...  
Keyword(s):  
Structural Transformations ◽  
Synthetic Analog ◽  
Acipenser Baerii ◽  
Hormonal Stimulation ◽  
Low Level ◽  
Modifying Factors ◽  
Acipenser Gueldenstaedtii ◽  
Biochemical Status ◽  
High Level ◽  
And Control

The article focuses on the special trend in technology of fish reproduction - use of a recirculated aquaculture system that allows creating optimum hydrological and hydrochemical parameters for a certain fish species regardless of the environmental conditions. Nevertheless, in the course of developing the new modifying factors of the environment (simulated conditions) the common orientation of a metabolism or separate biochemical reactions, in particular, generative exchange can be broken. It has been stated that dynamics of biochemical indexes of blood and urine characterizes intensity and orientation of generative exchange and allows to estimate possibility of structural transformations of fish ovaries. The analysis of the influence of a synthetic analog of hormone luliberin - surfagon on hybrid females of Russian × Lena sturgeon ( Acipenser guldenstadtii Brandt, 1833 × Аcipenser baerii Brandt , 1869) characterized by low fatness has revealed the stimulation of metabolic processes. During the research a low level of protein (16.0-28.0 g/l) under the influence of surfagon has increased by 35.0-38.0%. At the same time, throughout all experiment a high level of beta lipoproteins was observed in fishes of both pilot and control groups. Under the preparation impact the level of beta lipoproteins increased by 58.0% and 61.0% after injecting 0.2 mkg/kg and 2.0 mkg/kg of surfagon, respectively. The similar tendency was observed in the course of study of the hormones predecessor - cholesterol. Under the influence of surfagon in various doses there has been registered its increase from 1.3 g/l to 2.2-2.3 g/l. Thus, the surfagon injected groups of fish demonstrated a particular type of the biochemical status and reacted to hormonal stimulation under the low level of financial and energy resources. At the same time, histologic research hasn’t revealed cardinal changes in gonad morphology.

Negotiations over Accounting Issues: The Congruency of Audit Partner and Chief Financial Officer Recalls

2005 ◽  
Vol 24 (s-1) ◽  
pp. 171-193 ◽  
Author(s):  
Michael Gibbins ◽  
Susan A. McCracken ◽  
Steven E. Salterio
Keyword(s):  
Negotiation Process ◽  
Chief Financial Officers ◽  
Chief Financial Officer ◽  
Relative Importance ◽  
Common Elements ◽  
Contextual Features ◽  
Large Numbers ◽  
The Common ◽  
High Level ◽  
Two Sides

Much of what takes place in auditor-client management negotiations occurs in unobservable settings and normally does not result in publicly available archival records. Recent research has increasingly attempted to probe issues relating to accounting negotiations in part due to recent events in the financial world. In this paper, we compare recalls from the two sides of such negotiations, audit partners, and chief financial officers (CFOs), collected in two field questionnaires. We examine the congruency of the auditors' and the CFOs' negotiation recalls for all negotiation elements and features that were common across the two questionnaires (detailed analyses of the questionnaires are reported elsewhere). The results show largely congruent recall: only limited divergences in recall of common elements and features. Specifically, we show a high level of congruency across CFOs and audit partners in the type of issues negotiated, parties involved in resolving the issue, and the elements making up the negotiation process, including agreement on the relative importance of various common accounting contextual features. The analysis of the common accounting contextual features suggests that certain contextual features are consistently important across large numbers of negotiations, whether viewed from the audit partner's or the CFO's perspective, and hence may warrant future study. Finally, the comparative analysis allows us to identify certain common elements and contextual features that may influence both audit partners and CFOs to consider the accounting negotiation setting as mainly distributive (win-lose).

Caged-electron States and Split-electron States in Endohedral Alkali C60

2021 ◽  
Author(s):  
yifan yang ◽  
Lorenz S Cederbaum
Keyword(s):  
State Of The Art ◽  
Electronic States ◽  
Electron States ◽  
The Common ◽  
High Level

The low-lying electronic states of neutral X@C60(X=Li, Na, K, Rb) have been computed and analyzed by employing state-of-the-art high level many-electron methods. Apart from the common charge-separated states, well known...

Marine tube-dwelling diatoms of eastern Canada: descriptions, checklist, and illustrated key

1984 ◽  
Vol 62 (4) ◽  
pp. 778-794 ◽  
Author(s):  
Christopher S. Lobban
Keyword(s):  
New Species ◽  
Northwest Territories ◽  
Common Species ◽  
Bay Of Fundy ◽  
Eastern Canada ◽  
Lawrence Estuary ◽  
The Common ◽  
Living Material ◽  
St Lawrence Estuary ◽  
A New Species

From a study of living materials and specimens in several regional herbaria, a list has been drawn up of all the common and several of the rarer tube-dwelling diatoms of eastern Canada. Descriptions, illustrations of living material and acid-cleaned valves, and a key to the species are provided. Most specimens were from the Atlantic Provinces and the St. Lawrence estuary, but a few were from the Northwest Territories. By far the most common species is Berkeleya rutilans. Other species occurring commonly in the Quoddy Region of the Bay of Fundy, and sporadically in space and time elsewhere, arc Navicula delognei (two forms), Nav. pseudocomoides, Nav. smithii, Haslea crucigera, and a new species, Nav.rusticensis. Navicula ramosissima and Nav. mollis in eastern Canada are usually found as scattered cohabitants in tubes of other species. Nitzschia tubicola and Nz. fontifuga also occur sporadically as cohabitants.

Ba-, Si- and vacancy-rich phlogopites from the talc-bearing sulfide ore deposit of La Creuse, Beaujolais, France

2018 ◽  
Vol 82 (5) ◽  
pp. 1187-1210
Author(s):  
Marie-Lola Pascal ◽  
Michel Fonteilles ◽  
Véronique Tournis ◽  
Benoît Baptiste ◽  
Jean-Louis Robert ◽  
...  
Keyword(s):  
Goodness Of Fit ◽  
Monoclinic Space Group ◽  
Excess Charge ◽  
Formula Unit ◽  
X Ray Diffraction ◽  
Ore Deposit ◽  
Sulfide Ore ◽  
The Common ◽  
The Stability ◽  
High Level

ABSTRACTBa-rich and Si-rich phlogopites occur in the talc-bearing rocks of the La Creuse sulfide ore deposit in Beaujolais, France. They form a group of compositions completely separated from the common Al-rich phlogopites that occur in the surrounding talc-free metasiltites and metarhyolites, with higher Ba and Mg and lower Al contents. The Ba-rich phlogopites have a relatively narrow compositional range (0.24 to 0.80 Ba per formula unit, for 44 valencies) with high and constant Si (5.8 atoms per formula unit, apfu) and Mg + Fe (5.6 apfu), probably buffered by the presence of talc. Compared to low-Al phlogopites from talc-free rocks, the excess charge introduced by the BaK–1 substitution is compensated by interlayer vacancies. Such a high level of interlayer vacancy (0.56 pfu), related to the talc-producing metasomatic conditions, is essential for the stability of this special group of Ba-rich and Si-rich phlogopites.Single crystal X-ray diffraction analyses were performed. Ba-rich and Si-rich phlogopite is monoclinic, space group C2/m, (R = 5.31%) with a = 5.3185(5), b = 9.2136(9), c = 10.1349(11) Å and β = 100.131(11)°. The occupancies of Mg/Fe and K/Ba were refined exploring different vacancies. The solutions giving the best R factor (4.77%) and goodness-of-fit (1.06) are obtained with 15% < vacancy < 40% at the interlayer site.

scholarly journals Ecology of sandflies (Diptera: Psychodidae) in a restricted focus of cutaneous leishmaniasis en Northern Venezuela: I. Description of the study area, catching methods and species composition

1987 ◽  
Vol 82 (1) ◽  
pp. 119-124 ◽  
Author(s):  
M. Dora Feliciangeli
Keyword(s):  
Species Composition ◽  
Cutaneous Leishmaniasis ◽  
Relative Abundance ◽  
Rare Species ◽  
Common Species ◽  
Term Study ◽  
Phlebotomine Sandfly ◽  
Phlebotomine Sandflies ◽  
The Common ◽  
Catching Methods

A study on the ecology of phlebotomine sandfly fauna in a restricted focus of cutaneous leishmaniasis in northern Venezuela was undertaken in order to investigate the species responsible for the transmission. The study area and catching methods for phlebotomine sandflies are described. A total of 9,061 females and 1,662 males were collected during a year-term study. 12 species of Lutzomya and 1 species of Brumptomya sp. were identified. Absolute and relative abundance and ocurrence for each species were determined. The rel ative occurrence allowed to distinguish the common species, viz. L. panamensis, L. ovallesi, L. gomezi, L. tinidadensis, L. atroclavata, L. cayennensis, L. shannoni and L. olmeca bicolor from the rare species vis., L. punctigeniculata, L. rangeliana, L. evansi and L. dubitans. General comments on the species composition of the sandfly fauna in this locality are made.

scholarly journals Helminth fauna of Microtus cf. arvalis (Rodentia, Cricetidae) in Russia and adjacent countries

2020 ◽  
Vol 21 (5) ◽  
Author(s):  
NADEZHDA Yu. KIRILLOVA ◽  
Alexander Kirillov ◽  
ALEXANDER B. RUCHIN ◽  
MAXIM V. TRUKHACHEV
Keyword(s):  
Common Vole ◽  
Common Species ◽  
Final Host ◽  
Helminth Fauna ◽  
Helminth Species ◽  
Research Areas ◽  
The Common ◽  
Common Voles ◽  
Paratenic Hosts ◽  
Parasitic Worms

Abstract. Kirillova NYu, Kirillov AA, Ruchin AB, Trukhachev MV. 2020. Helminth fauna of Microtus cf. arvalis (Rodentia, Cricetidae) in Russia and adjacent countries. Biodiversitas 21: 1961-1979. The helminth fauna of voles of the Microtus cf. arvalis group is reviewed focusing on the Russian fauna and that of adjacent territories. In total, 61 helminth species have been recorded in these rodents: Trematoda-14, Cestoda-21, Nematoda-25, Acanthocephala-1. The diversity of the helminth community of the common vole is due to the wide species range and abundance of this rodent. M. arvalis is the final host for most of the parasites recorded from this host species. Only 10 cestodes and trematodes species use common voles as intermediate and paratenic hosts. The core of this voles’ helminth fauna is formed by common species that parasitize many different rodent species. The helminth fauna of the common vole has been most intensively studied in Russia, where 45 species of parasitic worms have been recorded in rodents. The similarity of the helminth fauna of the common vole from different study regions is determined by both the geographical proximity of the research areas and the broad distribution of most of the M. cf. arvalis helminth species.

scholarly journals From Driverless Dilemmas to More Practical Common-Sense Tests for Automated Vehicles

2020 ◽  
Author(s):  
Julian De Freitas ◽  
Bryant Walker Smith ◽  
Andrea Censi ◽  
Luigi Di Lillo ◽  
Sam E. Anthony ◽  
...  
Keyword(s):  
Common Sense ◽  
Autonomous Systems ◽  
Driving Behavior ◽  
Automated Vehicles ◽  
Everyday Lives ◽  
The Common ◽  
High Level ◽  
First Time ◽  
Trolley Dilemmas ◽  
Relevant Component

For the first time in history, automated vehicles (AVs) are being deployed in populated environments. This unprecedented transformation of our everyday lives demands a significant undertaking: endowing complex autonomous systems with ethically acceptable behavior. We outline how one prominent, ethically-relevant component of AVs—driving behavior—is inextricably linked to stakeholders in the technical, regulatory, and social spheres of the field. Whereas humans are presumed (rightly or wrongly) to have the ‘common sense’ to behave ethically in new driving situations beyond a standard driving test, AVs do not (and probably should not) enjoy this presumption. We examine, at a high level, how to test the common sense of an AV. We start by reviewing discussions of ‘driverless dilemmas’, adaptions of the traditional ‘trolley dilemmas’ of philosophy that have sparked discussion on AV ethics but have limited use to the technical and legal spheres. Then, we explain how to substantially change the premises and features of these dilemmas (while preserving their behavioral diagnostic spirit) in order to lay the foundations for a more practical and relevant framework that tests driving common sense as an integral part of road rules testing.

scholarly journals “Open” Category Unmanned Aerial Systems Harmonized Standards and Requirements Complex

2019 ◽  
Vol 25 (3) ◽  
pp. 74-80
Author(s):  
Andon Andonov
Keyword(s):  
Aviation Safety ◽  
Global Scale ◽  
Civil Aviation ◽  
Critical Conditions ◽  
Unmanned Aerial Systems ◽  
Unmanned Systems ◽  
The Common ◽  
High Level ◽  
The Military ◽  
Aerial Systems

Abstract The steadily increasing use of unmanned aerial systems (UAS) is an important factor for the military and civil aviation safety on a global scale. One of the critical conditions for the efficient functioning of the European aviation safety system is the establishment and implementation in practice of a comprehensive regulatory framework for the use of unmanned systems in the Common European Airspace. The aviation authorities and industry strive to introduce a set of rules and requirements that adequately and flexibly guarantee a high level of safety without limiting the development of the UAS market. This article proposes a set of standards that should be met by “Open” category UAS with the intention to execute operations in the European airspace.

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