scholarly journals Inter-sexual multimodal communication during mating in wild geladas: the leading role of females

2021 ◽  
Author(s):  
Anna Zanoli ◽  
Marco Gamba ◽  
Alban Lemasson ◽  
Ivan Norscia ◽  
Elisabetta Palagi

Abstract Female primates can emit vocalizations associated with mating that can function as honest signals of fertility. Here, we investigated the role of mating calls and visual signals in female geladas Theropithecus gelada. Since females have a central role in the gelada society and seem to solicit sexual interactions, we answered whether they emit vocalizations in conjunction with gazing to increase mating success probability. Before and during copulations, females can emit pre-copulation calls and copulation calls. For the first time, we identified a new female vocalization emitted at the final stage of copulations (end-copulation call), possibly marking the occurrence of ejaculation. We found that longer pre-copulation call sequences were followed by both prolonged copulations and the presence of end-copulation calls thus suggesting that females use pre-copulation calls to ensure successful copula completion. Moreover, we found that different combinations of female vocal types and gazing had different effects on male vocal behavior and motivation to complete the copula. The analysis of the vocal and visual signals revealed a complex inter-sexual multimodal chattering with the leading role of females in the signal exchange. Such chattering, led by females, modulates male sexual arousal, thus increasing the probability of the copula success.

2019 ◽  
Vol 484 (2) ◽  
pp. 238-242
Author(s):  
N. A. Semenova ◽  
P. E. Menshchikov ◽  
A. V. Manzhurtsev ◽  
M. V. Ublinskiy ◽  
T. A. Akhadov ◽  
...  

Intracellular concentrations of N acetyaspartate (NAA), aspartate (Asp) and glutamate (Glu) were determined for the first time in human brain in vivo, and the effect of severe traumatic brain injury on NAA synthesis in acute and late post-traumatic period was investigated. In MRI‑negative frontal lobes one day after injury Asp and Glu levels were found to decrease by 45 and 35%, respectively, while NAA level decreased by only 16%. A negative correlation between NAA concentration and the ratio of Asp/Glu concentrations was found. In the long-term period, Glu level returned to normal, Asp level remained below normal by 60%, NAA level was reduced by 65% relative to normal, and Asp/Glu ratio significantly decreased. The obtained results revealed leading role of the neuronal aspartate-malate shuttle in violation of NAA synthesis.


Behaviour ◽  
2014 ◽  
Vol 151 (6) ◽  
pp. 719-739 ◽  
Author(s):  
Vinícius Matheus Caldart ◽  
Samanta Iop ◽  
Sonia Zanini Cechin

Visual communication has evolved independently in several families of frogs and is complex in diurnal stream frogs. In addition to isolated visual and acoustic signals, some species may emit multimodal displays characterized by the association of these signals. Through the analysis of focal recordings obtained in situ in southern Brazil, we investigated the visual and multimodal communication in the diurnal stream frog Crossodactylus schmidti. We found a complex visual repertoire of nine signals used in intraspecific communication, of which the signal Both legs kicking was described for the first time. Males, females and juveniles emitted visual signals, but males had a larger repertoire and used most signals in agonistic interactions. The four most common visual signals, Toe flagging, Limb lifting, Body jerking and Running-jumping, were emitted predominantly upon rocks in the stream bed. The emission of isolated visual and acoustic signals, as well as audiovisual displays with simultaneous or temporally coupled components, demonstrates that the communication in C. schmidti is complex and that the multimodal displays may have different functions. We discuss the historical, behavioural, ecological factors which may have influenced the evolution of the visual repertoire of C. schmidti, and how the ritualization of derived activities similar to visual signals may have led to the evolution of part of the repertoire. This study provides novel results on visual and multimodal communication for the genus Crossodactylus and demonstrates that C. schmidti represents an appropriate model for studies of complex displays.


Author(s):  
O.V. Bulgakova ◽  
◽  
G.A. Toksabayeva ◽  
A.A. Aripova ◽  
A.Zh. Kausbekova ◽  
...  

Mitochondria are unique cell organoids that have their own mitochondrial DNA. They are involved in the regulation of many processes, such as cell survival, apoptosis, and cellular metabolism. It has long been known that mitochondria play a leading role in the mechanism of malignant transformation in the development of many neoplasms. Radon is a radioactive inert gas, is recognized as a carcinogen and, according to the World Health Organization, it is the second cause of lung cancer after smoking. Radon is found in soil, water and air in various concentrations. Radon migrates from the soil and rocks into the surrounding air, as a result of which it accumulates in poorly ventilated or closed rooms. Such areas represent the primary environment in which people are exposed to radioactive radon radiation. Radon penetrates through cracks in the Earth's crust and accumulates in the lower layers of the atmosphere. An increase in the concentration of radon in the air is observed in regions rich in uranium deposits, as well as near uranium mines. However, at the moment, the mechanisms of malignant transformation induced by radon are still not completely clear. In this review, we consider for the first time the most modern understanding of the role of mitochondria in the molecular and cellular effects of ionizing radiation, including radon. This kind of knowledge can be of great importance for improving the antitumor effectiveness of radiation therapy, as well as for reducing damage to healthy cells exposed to ionizing radiation and protecting the population living in an area potentially dangerous for radon manifestations.


2017 ◽  
pp. 81-90 ◽  
Author(s):  
Нина (Nina) Игоревна (Igorevna) Кащенко (Kashchenko) ◽  
Надежда (Nadezhda) Константиновна (Konstantinovna) Чирикова (Chirikova) ◽  
Даниил (Daniil) Николаевич (Nikolaevich) Оленников (Olennikov)

Spiraea L. is a genus of deciduous shrubs of Rosaceae family widespread on the territory of Eastern Siberia. As a result of the study of six Spiraea species growing on the Baikal region, it was shown that they characterized by a high content of phenolic compounds and their extracts had an inhibitory effect on α-amylase. The use of correlation analysis made it possible to reveal the leading role of flavonoids as carriers of the biological effect of extracts. The most active was the extract of S. salicifolia leaves with an IC50 value 69,30 μg/mL After fractionation and chromatographic separation of the extractive substances, 18 compounds were isolated from the ethyl acetate fraction of S. salicifolia and fifteen of them for the first time for the species, including trifolin, 6′′-O-caffeoyl-hyperoside, 6′′-O-caffeoyl-isoquercitrin, 6′′-O-caffeoyl-astragalin, 1-O-p-hydroxybenzoyl-6-O-p-coumaroyl-β-d-glucopyranoside, 3,4,5-tri-O-caffeoylquinic acid, isoramnetinin-3-O-β-d-glucopyranoside, tiliroside, isoramnetin-3-O-α-l-rhamnopyranoside, 1-O-cis-cinnamoyl-6-O-(2′-methylene-4′-hydroxybutyroyl)-β-d-glucopyranose, 1-О-(4′′-hydroxy-3′′-methylfurane-2′′-one)-6-О-trans-cinnamoyl-β-d-glucopyranose, 1-О-(4′′-hydroxy-3′′-methylfurane-2′′-one)-6-О-cis-cinnamoyl-β-d-glucopyranose, 6-tuliposide A and tulipalin A. The most active inhibitors of α-amylase were flavonoid caffeoyl glycosides with 6′′-O-caffeoyl-hyperoside as a most effective inhibitor with IC50 value 46.18 μg/mL. Latter compound determined the total anti-α-amylase effect of S. salicifolia. The content of 6′′-O-caffeoyl-hyperoside in leaves of S. salicifolia was 0,60-10,53 mg/g and flavonoids – 12,02-23,17 mg/g. This study demonstrated the fact that the acylated flavonoids of Spiraea are effective inhibitors of α-amylase.


Author(s):  
A. M. Panchenko ◽  
Yu. V. Timofeeva

For the first time, the findings of the comprehensive study of the contribution of military scientific libraries to the First All-Russia Congress of Libraries held on June 1-7, 1911, are published. The study was based on archival and prerevolutionary published sources. Four participation forms are distinguished: 1) preparation for the congress (leading role in various commissions organizational, preparatory commission for academic and special libraries, presidium of the section of public, academic and special libraries, as well as in the development of questionnaires for academic libraries); 2) work at the congress (speeches delivered by A. R. Voynich-Syanozhentsky and S. D. Maslovsky, discussions, chairing sections, secretarial responsibilities at the sections); 3) activity at the exhibition (presentations); 4) analysis and evaluation of the congress and its results. The study enabled to specify, systematize and significantly expand the knowledge of the role of military scientific libraries in preparation, organization and work of the First All-Russia Congress of Libraries. The historical experience of joint efforts of military and other library types evidences on the efficiency of such cooperation and the need to use it at the present stage.The findings will be useful for the professionals at military scientific and scientific libraries developing cooperation, as well as for researchers investigating into the history of military libraries, and organizers of library events, e.g. congresses, forums, congresses, symposia, assemblies.


2019 ◽  
Vol 7 ◽  
pp. 178-216
Author(s):  
Ivan Pater

The author analyzes works of Olgerd Ipolyt Bochkovskyi about such "awakeners" of the Czech national revival as František Palacký, František Ladislav Rieger, Jan Koubek, Karel Havlíček Borovský, Karel Havík Janophiles who were Slavophiles and in individual actions Russophiles, but at the same time really and correctly assessed the Ukrainian issue, for the first time brought it to an international forum. They supported the Ukrainians' language and rights in 1849 in the Austrian post-revolutionary parliament against Polish and Russian fraud, the independence of the Ukrainian people among the Slavs. The "awakeners" were against Russian claims to the Ukrainian Galicia, Bukovina and Transcarpathia, the anti-Ukrainian policy of tsarism, and defended the leading role of Ukraine in the final settlement of inter-Slavic relations. O. Bochkovskyi's journalistic activity in different European magazines is revealed. Special attention is paid to the coverage of the Ukrainian issue, the situation of Galician-Bukovynian Ukrainians, the national development of the Slavic peoples. The ideological influence of the notable Czech scientist, public and political figure Tomáš Garrigue Masaryk on the scientific way of Olgerd Bochkovskyi as a sociologist and nationalist is highlighted. In the works of O. Bochkovskyi, it was emphasized that T. Masaryk, before the war interpreted the Ukrainian question, based primarily on the real content and vitality of the Ukrainian movement. He emphasized the absolute undoubted right of Ukrainians to self-determination and political independence. It is noted that concerning the Ukrainian issue T. Masaryk had mainly political reasons. It is stated that O. Bochkovskyi proved T. Masaryk's warnings against Ukraine's independence during the war by recent history and the adjustment of life. The author singled out tactics and methods of the Czechoslovak liberation action as the top of T. Masaryk's nation-building art, a perfect example for Ukraine in further liberation directions, the guarantee of the future triumph of Ukrainian independence. Keywords: Olgerd Bochkovskyi, Tomáš Masaryk, Ukraine, Ukrainian issue, Ukrainians, Czechs, independence, statehood.


2021 ◽  
Vol 30 (6) ◽  
pp. 70-79
Author(s):  
E. E. Shishlova

In the article, on the basis of the culturological concept of the content of education as an adapted social experience, as well as the practice of its implementation in vocational training as purposeful and declared, the essence of its explicit, hidden and implicit components is differentiated for the first time. The leading role of the hidden content of education in the transmission of sociocultural values is revealed, which ensures the formation of the value-worldview characteristics of the personality of a competent graduate, capable of effective professional activity in the conditions of sociocultural transformations of the postindustrial era. The dynamic structure of the hidden education content is revealed, which includes communicative and subject components and which made it possible to determine the directions of its update by the sociocultural aspect. The update of the education content in the context of the growing role of the cultural factor in social development is realized through the sociocultural reflection of the transmitted social experience, for the development of which the diagnostic-forming methodology “My sociocultural values” has been developed. As a result of the update of the hidden education content by the sociocultural aspect, it is transformed into an implicit (updated hidden), which, while not being declared, but being adapted and purposeful in reflecting and translating sociocultural experience, improves the training of specialists in various directions and profiles, implements the leading principle of higher education.


Crisis ◽  
2016 ◽  
Vol 37 (2) ◽  
pp. 130-139 ◽  
Author(s):  
Danica W. Y. Liu ◽  
A. Kate Fairweather-Schmidt ◽  
Richard Burns ◽  
Rachel M. Roberts ◽  
Kaarin J. Anstey

Abstract. Background: Little is known about the role of resilience in the likelihood of suicidal ideation (SI) over time. Aims: We examined the association between resilience and SI in a young-adult cohort over 4 years. Our objectives were to determine whether resilience was associated with SI at follow-up or, conversely, whether SI was associated with lowered resilience at follow-up. Method: Participants were selected from the Personality and Total Health (PATH) Through Life Project from Canberra and Queanbeyan, Australia, aged 28–32 years at the first time point and 32–36 at the second. Multinomial, linear, and binary regression analyses explored the association between resilience and SI over two time points. Models were adjusted for suicidality risk factors. Results: While unadjusted analyses identified associations between resilience and SI, these effects were fully explained by the inclusion of other suicidality risk factors. Conclusion: Despite strong cross-sectional associations, resilience and SI appear to be unrelated in a longitudinal context, once risk/resilience factors are controlled for. As independent indicators of psychological well-being, suicidality and resilience are essential if current status is to be captured. However, the addition of other factors (e.g., support, mastery) makes this association tenuous. Consequently, resilience per se may not be protective of SI.


2019 ◽  
pp. 22-29
Author(s):  
Н. В. Фрадкіна

The purpose and tasks of the work are to analyze the contemporary Ukrainian mass culture in terms of its value and humanistic components, as well as the importance of cultural studies and Ukrainian studies in educational disciplines for the formation of a holistic worldview of modern youth.Analysis of research and publications. Scientists repeatedly turned to the problems of the role of spirituality in the formation of society and its culture. This problem is highlighted in the publications by O. Losev, V. Lytvyn, D. Likhachev, S. Avierintsev, M. Zakovych, I. Stepanenko and E. Kostyshyn.Experts see the main negative impact of mass culture on the quality approach, which determines mass culture through the market, because mass culture, from our point of view, is everything that is sold and used in mass demand.One of the most interesting studies on this issue was the work by the representatives of Frankfurt School M. Horkheimer and T. Adorno «Dialectics of Enlightenment» (1947), devoted to a detailed analysis of mass culture. Propaganda at all socio-cultural levels in the form is similar in both totalitarian and democratic countries. It is connected, according to the authors, with the direction of European enlightenment. The tendency to unify people is a manifestation of the influence of mass culture, from cinema to pop. Mass culture is a phenomenon whose existence is associated with commerce (accumulation in any form – this is the main feature of education), in general, the fact that it exists in this form is related to the direction of the history of civilization.Modern mass culture, with its externally attractive and easily assimilated ideas and symbols, appealing to the trends of modern fashion, becomes a standard of prestigious consumption, does not require intense reflection, allows you to relax, distract, not teach, but entertains, preaches hedonism as the main spiritual value. And as a consequence, there are socio-cultural risks: an active rejection of other people, which leads to the formation of indifference; cruelty as a character trait; increase of violent and mercenary crime; increase in the number of alcohol and drug addicts; anti-patriotism; indifference to the values of the family and as a result of social orphanhood and prostitution.Conclusions, perspectives of research. Thus, we can conclude that modern Ukrainian education is predominantly formed by the values of mass culture. Namely, according to the «Dialectic» by Horkheimer and Adorno, «semi-enlightenment becomes an objective spirit» of our modern society.It is concluded that only high-quality education can create the opposite of the onset of mass culture and the destruction of spirituality in our society. It is proved that only by realizing the importance of cultivating disciplines in the educational process and the spiritual upbringing of the nation, through educational reforms, humanitarian knowledge will gradually return to student audiences.Formation of youth occurs under the influence of social environment, culture, education and self-education. The optimal combination of these factors determines both the process of socialization itself and how successful it will be. In this context, one can see the leading role of education and upbringing. It turns out that the main task of modern education is to spread its influence on the development of spiritual culture of the individual, which eventually becomes a solid foundation for the formation of the individual. Such a subject requires both philosophical and humanitarian approaches in further integrated interdisciplinary research, since the availability of such research will provide the theoretical foundation for truly modern educational and personal development.


1991 ◽  
Vol 18 (3) ◽  
pp. 333-362 ◽  
Author(s):  
MADELEINE LY-TIO-FANE

SUMMARY The recent extensive literature on exploration and the resulting scientific advances has failed to highlight the contribution of Austrian enterprise to the study of natural history. The leading role of Joseph II among the neutral powers which assumed the carrying trade of the belligerents during the American War of Independence, furthered the development of collections for the Schönbrunn Park and Gardens which had been set up on scientific principles by his parents. On the conclusion of peace, Joseph entrusted to Professor Maerter a world-encompassing mission in the course of which the Chief Gardener Franz Boos and his assistant Georg Scholl travelled to South Africa to collect plants and animals. Boos pursued the mission to Isle de France and Bourbon (Mauritius and Reunion), conveyed by the then unknown Nicolas Baudin. He worked at the Jardin du Roi, Pamplemousses, with Nicolas Cere, or at Palma with Joseph Francois Charpentier de Cossigny. The linkage of Austrian and French horticultural expertise created a situation fraught with opportunities which were to lead Baudin to the forefront of exploration and scientific research as the century closed in the upheaval of the Revolutionary Wars.


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