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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
381

A perspectiva de uma antropologia behaviorista radical : cultura, variação, seleção e transmissão

Leugi, Guilherme Bergo 13 April 2012 (has links)
Made available in DSpace on 2016-06-02T20:13:13Z (GMT). No. of bitstreams: 1 4401.pdf: 609734 bytes, checksum: e16db36cf06bed5c04fb1af0dad2b54b (MD5) Previous issue date: 2012-04-13 / Universidade Federal de Sao Carlos / Since the early writings on Radical Behaviorism there has been analysis of what is commonly known as the cultural level of variation and selection. Over the past 25 years, approximately, with growing interest by the scientific community on the culture topic, as well as conceptual developments regarding behavioral contingency analogies for the cultural determination, studies on Selection by Consequences model specifically for the culture have gained prominence. Skinner textually defines culture in many different ways throughout his work; nevertheless we believe it was possible to analyze them and theoretically propose an alternative understanding, based on most general principles of Radical Behaviorism with special attention to this theory determinism, regarding the functional relations established among environment and human actions. We understand that it is possible to comprehend the cultural system of determination of behavior as related to the environment which is historically and socially produced, not only referring to sets of behaviors repeated over generations. Cultural practices, as a proposition, would be redefined as parts of the behavioral environment (in this case, comprehended as reinforcing cultural practices). We also believe that it was possible to define a schematic model of determination based on the environmental and historical aspects, which is expected to be comprehensive in relation to culturally determined behavior (whether those behaviors produced in groups or those emitted alone, but which still are socially build). After these analyzes, we took a quick foray into Anthropology attempting to establish ways for the methodological inclusion of ethnography in the field of behavioral study of the culture. The current work is intended as an interpretative possibility and has not, of course, exhausted the subject matter or completely solved the problem of environmental determination on culture. / Desde as primeiras formulações em Behaviorismo Radical estão presentes análises do que se conhece como nível cultural de variação e seleção. Nos últimos 25 anos, aproximadamente, com o interesse crescente da comunidade científica da área sobre o tema da cultura, bem como desenvolvimentos conceituais analógicos às contingências comportamentais para a determinação cultural, o estudo acerca Modelo de Seleção pelas Consequências especialmente para a cultura tem ganhado destaque. Skinner, contudo, define cultura de maneiras textualmente diferentes ao longo de suas obras, mas foi possível, ao analisá-las, propor teoricamente uma compreensão alternativa, que se pretende fundamentada nos princípios mais gerais do Behaviorismo Radical, com atenção especial ao determinismo presente nesta teoria, do ponto de vista das relações funcionais estabelecidas entre ações e ambiente. Entende-se que é possível compreender o sistema cultural de determinação de comportamento como relacionado ao ambiente produzido historicamente e socialmente e não somente a conjuntos de comportamentos repetidos ao longo de gerações. Práticas culturais seriam redefinidas, propositivamente, como parte do ambiente do comportamento (neste caso, compreendidas como práticas culturais reforçadoras), e acredita-se, também, que tenha sido possível definir um esboço de modelo de determinação, baseado em características ambientais e históricas que seja abrangente em relação ao comportamento determinado culturalmente (tanto aquele produzido nos grupos, quanto aquele emitido individualmente mas ainda sim socialmente construído). Ao fim destas análises, resumidas incursões ao campo da Antropologia foram feitas na direção de tentativamente abrir caminho para a inclusão metodológica, fundamentada, da etnografia para o estudo comportamental da cultura. O atual trabalho se propõe uma possibilidade interpretativa não tendo, certamente, esgotado o assunto ou encerrado a questão da determinação ambiental em cultura.
382

Biologický determinismus a rasismus v myšlení H. S. Chamberlaina / H.S.Chamberlain: visionary of biological realism.

VRÁNEK, Matěj January 2018 (has links)
The diploma thesis delay with H. S. Chamberlain's thinking as a representative of biological determinism and racism, which id presented in the context of modern progress of secular thinking. Thesis further describes eugenics as the outcome of this way of thinking, which is presented in it's theory and the practice of Nazi "racial hygiene", but also at present, where eugenics practice in a certain measure still persists, under other names only.
383

Amazônia ano 1000: territorialidade e conflito no tempo das chefias regionais / Amazonia year AD 1000: Territoriality and Conflict at the Time of the Regional Chiefdoms

Claide de Paula Moraes 13 June 2013 (has links)
Este trabalho apresenta os resultados de uma pesquisa em arqueologia que busca discutir o processo de ocupação humana no passado pré-colonial de uma área genericamente conhecida como Amazônia Central. Mais precisamente estamos tratando de evidências arqueológicas das proximidades da foz dos rios Negro e Solimões e do baixo rio Madeira, Estado do Amazonas, Brasil. Nosso objetivo se foca principalmente nas ocupações da era Cristã. A discussão é guiada pelas evidências de um período de ocupação classificado como fase Paredão, porém, o objetivo maior do trabalho é entender os processos que levaram ao surgimento, desenvolvimento e decadência das chefias regionais do período pré-colonial da Amazônia. Com base em pesquisas de levantamento, mapeamento e escavação de sítios arqueológicos nestas duas áreas e com o subsídio de um grande volume de pesquisas produzidas no Projeto Amazônia Central, buscamos entender o processo de formação dos sítios e estruturas arqueológicas, as particularidades de cada momento de ocupação e a interação entre os antigos habitantes desta região. Para lançar luz sobre um objetivo maior de entender processos regionais amplos, partimos de estudos intra-sítio e da tecnologia de produção de artefatos com análises tecnológicas e espaciais pormenorizadas. Amparados pelos resultados destas análises, buscamos dialogar com outros contextos onde os dados arqueológicos são ainda exploratórios. Com estas ferramentas tentaremos dialogar com trabalhos de outras regiões da Amazônia que versam sobre, densidade populacional, forma de assentamento, sistemas de assentamentos, conflito, disputa territorial, significado da variabilidade artefatual e modo de subsistência. Ao final saímos com algumas propostas alternativas para interpretar o significado da variabilidade tecnológica da cerâmica, da disputa por território, importância da agricultura e complexidade política por volta do ano 1000 DC. / This work presents the results of archaeological research aimed at debating the process of human occupation in the pre-Columbian past in an area generally referred to as the Central Amazon. More specifically, it contemplates archaeological evidence from the environs of the mouth of the Rivers Negro and Solimões (Amazon) as well as the lower Madeira, in the state of Amazonas, Brazil. Our principal focus is upon occupations of the Christian Era; the discussion is guided by evidence from a period of occupation defined as the Paredão phase. The greater aim of the work, however, is to understand processes that led to the emergence, development and decline of regional chiefdoms of the pre-colonial period in Amazonia. We seek to understand site and archaeological structure formation processes, the specificities of each moment of occupation and the interaction between peoples who lived in these areas based on survey, mapping and excavation of archaeological sites and upon a substantial volume of research conducted by members of the Central Amazon Project. Technological and detailed spatial analyses allowed us to study artefact production technology and intra-site contexts respectively, enabling us in turn to shed light on a larger question, involving wider regional processes. We then compared and contrasted the results of these analyses with other contexts, where archaeological research is still in an exploratory phase. These data and methods have permitted us to contribute to debates involving other areas of Amazonia, which contemplate demographic density, settlement patterns, settlement systems, conflict, territorial disputes, the meaning of artefact variability and modes of subsistence. This work has led us to formulate alternative proposals for interpreting the meaning of the technological variability of ceramic artefacts, territorial disputes, the importance of agriculture and political complexity around the year 1000AD.
384

Liberdade e imputabilidade moral em Hume

Ferraz, Marilia Cortes de 25 April 2006 (has links)
Orientador: Jose Oscar de Almeida Marques / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciencias Humanas / Made available in DSpace on 2018-08-06T09:42:26Z (GMT). No. of bitstreams: 1 Ferraz_MariliaCortesde_M.pdf: 594205 bytes, checksum: fb169b56cfd9f1eb5975fe5b78c0f24c (MD5) Previous issue date: 2006 / Resumo: A dissertação examina a análise de Hume dos conceitos de liberdade e imputabilidade moral. O texto de referência para a pesquisa é a seção VIII da Investigação sobre o entendimento humano. Mostro, a partir do estudo dessa seção, em que sentido os conceitos de liberdade e necessidade são compatíveis para Hume. Para tanto, analiso o compatibilismo humeano enfatizando a unidade explicativa que o autor esposa claramente na obra citada. De fato, Hume, em seu exame das noções de liberdade e necessidade anuncia introduzir novidades que prometem ao menos algum resultado na decisão da controvérsia entre a doutrina da necessidade e a doutrina da liberdade (da vontade). Ele propõe um 'projeto de reconciliação¿ (reconciling project) que consiste em mostrar que liberdade e necessidade são perfeitamente compatíveis entre si, e que afirmar que as ações humanas são livres não é afirmar que estejam fora do âmbito da necessidade, mas apenas que se realizaram sem constrangimento. Em seguida, esclareço as razões que conduzem à crença na vontade livre, crença esta infundada, segundo Hume. Por fim, procuro estabelecer as conseqüências que o compatibilismo humeano traz para a noção de responsabilidade moral. Hume entende que não só é perfeitamente possível explicar os juízos morais pelo seu compatibilismo, como também que o seu compatibilismo é a única alternativa de fato consistente para dar conta dos ajuizamentos que fazemos acerca da moralidade. Entendo que a explicação dos juízos morais de imputabilidade oferecida por Hume representa uma hipótese altamente persuasiva e com vigor suficiente para responder a objeções geralmente apresentadas pelos incompatibilistas / Abstract: The dissertation examines the analysis of Hume of the concepts of freedom and moral imputability. The text of reference for the research is section VIII of the Enquiry concerning Human Understanding. I show, from the study of this section, how freedom and necessity are compatible for Hume. To this effect, I analyze the humean compatibilism emphasizing the unit of the explanation that the author maintains in the cited work. Hume, in his examination of freedom and necessity, announces a new approach that promises at least some results for the decision of the controversy between the doctrine of the necessity and the doctrine of the freedom (of the will). He proposes a conciliatory project that consists in showing that freedom and necessity are perfectly compatible, and that to say that the human actions are free is not to say that they are out of the scope of the necessity, but only that they are without constraint. After that, I clarify the reasons that lead to the belief in free will, which is baseless according to Hume. Finally, I establish the consequences that humean compatibilism brings for the notion of moral responsibility. Hume understands not only that it is perfectly possible to explain moral judgments by means of his compatibilism, but also that his compatibilism is the only consistent alternative to account for moral judgement. I understand that the explanation of moral judgments of imputability offered by Hume represents a highly persuasive hypothesis, and strong enough to answer the objections generally raised by incompatibilists / Mestrado / Filosofia Moral / Mestre em Filosofia
385

Culpabilidade no direito penal: a ilusão do poder agir de outro modo a partir do problema do livre-arbítrio

Varjão, Alan Jefferson Santos 26 February 2014 (has links)
We have here a theoretical research that intends to question the concept of culpability, in other words, the idea of being able to act otherwise considering the problem of free will. We argue that the concept of culpability is legitimized by a libertarian sense of free will in the common sense that has no empirical basis. Thus, given the impossibility of proving the existence of free will, we affirm that the criminal law cannot justify punishment on desert. Despite the compatibilist appearance, the idea of being able to do otherwise is supported implicitly by a libertarian point of view. In other words, the judgment of disapproval is justified by an untenable notion of freedom. The idea is to demonstrate that the way people see free will is an illusion because the assumptions that sustain it are false. In support, we use arguments of some philosophers and discoveries of neuroscience. From them, we demonstrated that the only way out of culpability is the normative presumption based on an a priori concept of average man. Besides false free will, the culpability brings a sense of moral realism that cannot be sustained in the face of some discoveries of neuroscience. In the background, we showed the evolution of criminal law as a systematic construction and the role played by culpability in the criminal dogmatic system. With the denial of the normative concept, we analyzed the functionalism of Claus Roxin and Gunther Jakobs, and also the theory of utilitarianism by deterrence. / Trata-se de pesquisa teórica que procura questionar a ideia do poder agir de outro modo da culpabilidade a partir do problema do livre-arbítrio. Defendemos que a culpabilidade é legitimada por uma sensação libertista de livre-arbítrio no senso comum que não tem fundamento empírico. Assim, diante da impossibilidade de comprovação da vontade livre, afirmamos que o Direito penal não pode fundamentar a pena no merecimento. Apesar da aparência compatibilista, o poder agir de outro modo se baseia, implicitamente, no libertismo. Em outras palavras, o juízo de reprovação é justificado por uma noção insustentável de liberdade. A ideia é demonstrar que o modo como as pessoas enxergam o livre-arbítrio representa uma ilusão, pois os pressupostos que o sustentam são falsos. Como fundamentação, utilizamos argumentos de alguns filósofos e descobertas da neurociência. A partir deles, demonstramos que a única saída para a culpabilidade é a presunção normativa com base em um conceito a priori de homem médio. Além do falso livrearbítrio, a culpabilidade traz uma noção de realismo moral que não pode ser sustentada diante de algumas descobertas da neurociência. Em segundo plano, demonstramos a evolução do Direito penal como construção sistemática e o papel ocupado pela culpabilidade no sistema da dogmática penal. Com a negação do conceito normativo, analisamos as propostas funcionalistas de Claus Roxin e Gunther Jakobs, e também a teoria do utilitarismo por dissuasão.
386

Projeto schopenhaueriano de soteriologia / Project schopenhauerian of soteriology

Picoli, Gleisy Tatiana, 1981- 03 June 2013 (has links)
Orientador: Oswaldo Giacoia Junior / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciências Humanas / Made available in DSpace on 2018-08-21T23:21:28Z (GMT). No. of bitstreams: 1 Picoli_GleisyTatiana_M.pdf: 1328650 bytes, checksum: cd9fa95eb859b2577edd8431c6f4d3d5 (MD5) Previous issue date: 2013 / Resumo: Esta dissertação tem por objetivo ressaltar a importância do conhecimento da doutrina crista da graça para a compreensão das doutrinas schopenhauerianas da compaixão e da liberdade moral. Afinal, Schopenhauer faz uso de conceitos cristãos para explicar os principais pontos de sua ética, donde se destaca o papel da graça. Para cumprir o meu objetivo, analiso, primeiramente, a filosofia do "doutor da graça", Agostinho, e, em seguida, avalio suas implicações na filosofia de Schopenhauer / Abstract: This dissertation aims to highlight the importance of the knowledge of the Christian doctrine of grace to the comprehension of the schopenhauerian doctrines of compassion and moral freedom. After all, Schopenhauer uses Christian concepts to explain the key issues of his ethics, in which the role of grace stands out. For achieving this goal, I first analyze the philosophy of the "Doctor of Grace", St. Augustine, and afterward assess its implications in Schopenhauer's philosophy / Mestrado / Filosofia / Mestra em Filosofia
387

Analyse thématique de L’hiver de force : Déterminisme social et invectives

Racine, Sylvain January 2017 (has links)
Le roman à l’étude dans cette analyse littéraire est L’hiver de force de Réjean Ducharme, publié chez Gallimard en 1973. L’objectif de ce travail a consisté à chercher à comprendre pourquoi les personnages principaux André et Nicole, des mécontents intelligents et éduqués, ont choisi de vivre une vie les menant à rien, le tout en invectivant à peu près tout autour d’eux. Nous suggérons également une réponse, dans le contexte du récit, à la question « pourquoi l’hiver débute un 21 juin? » Pour réaliser ce travail, nous nous sommes intéressés à l’invectif, théorie littéraire développée par Marie-Hélène Larochelle, ainsi qu’à la notion de déterminisme social. / The novel studied in this literary analysis is L’hiver de force written by Réjean Ducharme and published by Gallimard in 1973. The objective of this work was to reach an understanding as for why the main characters André and Nicole, two clever and educated malcontents, chose to live a life leading to basically nothing, all this while insulting just about everyone and everything. Furthermore, we suggest an answer, in the narrative context, to the question « why does the winter begin a 21st of June? » In order to realise this study, we looked into the invectif, a literary theory developed by Marie-Hélène Larochelle, as well as the notion of social determinism.
388

Sélectionner et cultiver Stevia rebaudiana Bertoni en milieu tempéré : exploration de la variabilité de la teneur et de la composition en glycosides de steviol / Breeding and cultivation of Stevia rebaudiana Bertoni in temperate areas : exploration of steviol glycoside content and composition variability

Barbet-Massin, Claire 03 July 2015 (has links)
Stevia rebaudiana Bertoni, une herbe vivace de la famille des Asteraceae originaire du Paraguay, est d'un intérêt croissant en tant que source d’édulcorants naturels acoloriques, les glycosides de steviol (SVglys). Ces diterpénoïdes sont organisés autour d’un noyau de steviol et diffèrent par le nombre et la nature d’unités de sucre liées à ce noyau. Ils sont accumulés à des concentrations allant de 4 à 20% de la masse sèche des feuilles, selon le génotype, le stade phénologique et les conditions de croissance. S. rebaudiana apparaît comme une espèce alternative prometteuse en Europe, mais nécessite au préalable une évaluation de ses besoins en culture et un travail de sélection variétale afin d’optimiser la teneur et la composition en SVglys en milieu tempéré. L'objectif de ce travail était d'étudier les sources de variabilité génotypique et environnementale pour l’accumulation en SVglys et la production de biomasse foliaire. Une forte variabilité génotypique a été observée pour la composition en SVglys et, à un degré moindre, pour la teneur en SVglys ainsi que pour des critères morphologiques et de précocité. L’environnement (fertilisation, durée du jour, stade phénologique, âge de la plante) a également eu un effet sur l’élaboration de la biomasse foliaire et sur la teneur en SVglys, alors que la composition en SVglys a été moins affectée par ces facteurs. Ces résultats suggèrent des mécanismes biochimiques et génétiques complexes régissant la voie de biosynthèse des SVglys. Ils laissent également entrevoir des possibilités de sélection variétale et donnent des indications sur les exigences de S. rebaudiana pour sa culture sous nos climats. / Stevia rebaudiana Bertoni, a perennial shrub of the Asteraceae family originating from Paraguay, is of increasing interest as a source of zero-calorie natural sweeteners: the steviol glycosides (SVglys). These diterpenoids differ in the number and the nature of sugar units bound to a steviol skeleton. They accumulate in leaves at concentrations ranging from 4 to 20%, according to genotype, phenological stage, and growth conditions. S. rebaudiana appears as a promising alternative culture in Europe, but requires investigations to assess its cultivation plant requirements and a breeding effort to optimize SVgly content and composition under temperate climate. The objective of this work was to explore the sources of genotypic and environmental variability for SVglys accumulation and leaf biomass production. High genotypic variability has been observed for SVgly composition and, to a lesser extent, for SVgly content as well as for morphological criteria and precocity. Leaf biomass and SVgly content varied also with the environment (fertilization, daylength, phenological stage) and over the years in perennial culture, while SVgly composition was less affected by these factors. These results suggested complex biochemical and genetic mechanisms regulating SVglys biosynthetic pathway. In parallel they revealed breeding potentialities and gave indications on S. rebaudiana requirements for its cultivation under temperate climate.
389

Etude des patrons de recombinaison, de leur déterminisme génétique et de leurs impacts en sélection génomique / Study of the recombination patterns, of their genetic determinisms and of their impact on genomic selection in the ovine French breed Lacaune

Petit, Morgane 17 October 2017 (has links)
La recombinaison génétique est un processus biologique fondamental, ayant lieu au cours de la méiose et assurant la bonne ségrégation des chromosomes, ainsi que le maintien de la variabilité génétique grâce au brassage intrachromosomique. La recombinaison a été étudiée dans de nombreuses espèces, en particulier chez les Mammifères et les animaux d’élevage, comme les bovins, les porcs ou les ovins. Dans tous les cas, une variation du taux de recombinaison a été observée entre les individus et il a été démontré qu’elle était héritable et sous déterminisme génétique. Dans certaines espèces, des cartes génétiques ont également été construites, ce qui a permis de localiser les crossingovers et de détecter de très petites zones du génome où la recombinaison était importante : les points chauds. En race ovine Lacaune, de nombreuses données de génotypages sont disponibles, notamment grâce à l’existence de deux puces : une de moyenne densité avec 54 000 marqueurs et une de haute densité avec 600 000 marqueurs. Deux jeux de données étaient donc disponibles ; un jeu de données familial avec près de 6 000 individus apparentés et génotypés pour les 54 000 marqueurs et un jeu de données comportant 70 Lacaune non apparentés et génotypés pour les 600 000 marqueurs. Des cartes génétiques ont donc été créées pour ces deux jeux de données. Avec les animaux non apparentés, environ 50 000 points chauds ont été détectés. Le jeu de données familial a permis d’observer des motifs de distribution de la recombinaison communs aux autres Mammifères. Enfin, la combinaison des deux jeux de données a révélé la présence de signatures de sélection et a permis de créer une carte génétique de haute densité. De plus, une variation du taux de recombinaison a été observée entre les individus et a pu être liée à l’existence de 2 QTLs majeurs sur les chromosomes 6 et 7. Des gènes candidats plus ou moins bien connus ont pu être proposés, voire étudiés : RNF212 et HEI10. De plus, une comparaison avec une autre population ovine a permis de montrer que les cartes de recombinaison étaient quasiment identiques, mais que le taux de recombinaison individuel était soumis à un déterminisme génétique différent. Il a également été possible de proposer une application concrète pour l’utilisation des cartes génétiques en sélection génomique, grâce à la création de puces basse densité pouvant être utilisées pour l’imputation des reproducteurs et donc favoriser le génotypage et la sélection génomique à moindre coût. / Genetic recombination is a fundamental biological process, which occurs during the meiosis. It allows the good segregation of the chromosomes and contributes to maintain the genetic diversity. Recombination was already studied in a lot of different species, especially in mammals and in farm animals, such as the pig, the cattle or the sheep. In each case, a variation of the recombination rate between the individuals was observed. This variation was heritable and under genetic determinism. In some species, genetic recombination maps were also created, which allowed to localize the crossovers and to detect really tiny genomic regions where the recombination is huge: the recombination hotspots. In the Lacaune breed sheep, a lot of genotyping data are available thanks to two existing arrays: a first with a medium density of markers (about 54,000 markers) and a second with a high density of markers (about 600,000 markers). Two datasets were thus available: a familial dataset with about 6,000 animals genotyped for the 54,000 markers and a dataset of 70 unrelated Lacaune genotyped for the 600,000 markers. Genetic recombination maps were created for these two datasets. With the 70 unrelated Lacaune, about 50,000 hotspots were detected. The familial dataset allowed to observe the mammals common recombination patterns. Finally, when the two datasets were combined, selection signatures were revealed and a high density recombination map were created. Furthermore, a variation of the recombination rate within the individuals was observed and was associated to 2 main QTLs on the chromosomes 6 and 7. Already known, or not, candidate genes were proposed and sometimes studied: especially RNF212 and HEI10. Finally, a comparison with another sheep breed revealed that the genetic recombination maps were really similar, but the individual recombination rate was under a different genetic determinism. A concrete application of the genetic recombination map in genomic selection was also proposed thanks to the creation of lowdensity SNPs sets, which could be used to impute the animals and thus to improve the genotyping and the genomic selection for lessercosts.
390

Approche comparée du déterminisme environnemental de l'induction du cycle de reproduction chez cinq poissons d'eau douce tempérée / Comparative approach of environmental determinism of the onset of the reproductive cycle of five temperate freshwater fish

Ben Ammar, Imen 22 December 2014 (has links)
Un des moyens de développer durablement l’aquaculture européenne est la domestication d’espèces locales. Etant donné les coûts liés à la domestication d’une espèce, la mise en œuvre d’une démarche générique semble pertinente. Ainsi, l’analyse de 29 traits reproducteurs a généré une classification en 10 groupes structurés par la période de ponte et la température d’incubation des œufs. L’objet de cette thèse est de tester la pertinence de ces regroupements en étudiant l’effet d’une photophase constante longue PC et naturelle PN sur l’induction du cycle de reproduction chez des pondeurs printaniers précoces PPP (perche, sandre, gardon et brochet) et un pondeur printanier tardif PPT (rotengle). Au cours de ce travail, nous avons analysé des paramètres morpho-anatomiques, histologiques et physiologiques pour étudier les effets des traitements photopériodiques. De fortes similarités de réponse au traitement photopériodique entre les PPP ont été observées avec une inhibition du cycle de reproduction sous PC et une induction du cycle de reproduction sous PN. Si le développement gonadique et les teneurs en E2 et vitellogénine chez les femelles semblent être affectés de la même manière chez les espèces du même groupe, les teneurs en androgènes chez les deux sexes présentent des réponses espèce-spécifiques. Ceci suggère l’existence de mécanismes de régulation spécifiques qui semblent avoir peu de conséquences zootechniques. En conclusion, les similarités entre les PPP apportent des éléments de réponse sur la pertinence des regroupements surtout au niveau des paramètres les plus intégrateurs et sur la pertinence de la démarche générique qui s’appuie sur la biologie comparée / A way for the development of a sustainable inland aquaculture is the domestication of local species. As domestication usually results from a long, costly and empirical zootechnical process, the use of classifications could be a relevant strategy. In our laboratory, a generic method was developed based on grouping species sharing similar reproductive traits (29) and resulted in 10 clusters structured by spawning period and temperature of egg incubation. The aim of this work is to assess the relevance of this clustering by testing the effect of constant long (CP) and natural photoperiod (NP) on the onset of the reproductive cycle in “early spring” ESS (Eurasian perch, pikeperch, roach and pike) and a “late spring” spawner LSS (rudd). This work is based on a morpho-anatomic, histological and physiological analysis of the broodstock to study the effect of photoperiod treatments. Strong similarities were shown in the response of the ESS with inhibition of the reproductive cycle under CP and induction under NP. The gonadal development and the plasma levels of E2 and vitellogenin showed similar responses to the photoperiodic treatment between ESS, while, the androgens levels showed different responses even in species belonging to the same group and the same family. The observed similarities allow us to provide an evidence about the relevance of clusters especially for the most integrative parameters. However, even if extrapolation of current knowledge may be possible from Eurasian perch to other ESS especially for zootechnical purposes, the mechanisms of gonadogenesis regulation and especially androgenesis may be different between the studied species

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