Isolation of polymorphic tetranucleotide microsatellite markers in the satin bowerbird, Ptilonorhynchus violaceus

We isolated 13 polymorphic microsatellite markers from the satin bowerbird, Ptilonorhynchus violaceus from a genomic library enriched in (AAGG)(n) repetitive elements and characterized them in 20 individuals. The number of alleles ranged from two to 18 per locus with the observed heterozygosity ranging from 0.15 to 1.00. These markers will be useful for analysing questions concerning parentage, population genetic structure and models of speciation.

Phylogeography of an east Australian wet-forest bird, the satin bowerbird (Ptilonorhynchus violaceus), derived from mtDNA, and its relationship to morphology

Australian wet forests have undergone a contraction in range since the mid-Tertiary, resulting in a fragmented distribution along the east Australian coast incorporating several biogeographical barriers. Variation in mitochondrial DNA and morphology within the satin bowerbird was used to examine biogeographical structure throughout almost the entire geographical extent of these wet forest fragments. We used several genetic analysis techniques, nested clade and barrier analyses, that use patterns inherent in the data to describe the spatial structuring. We also examined the validity of the two previously described satin bowerbird subspecies that are separated by well-defined biogeographical barriers and tested existing hypotheses that propose divergence occurs within each subspecies across two other barriers, the Black Mountain corridor and the Hunter Valley. Our data showed that the two subspecies were genetically and morphologically divergent. The northern subspecies, found in the Wet Tropics region of Queensland, showed little divergence across the Black Mountain corridor, a barrier found to be significant in other Wet Tropics species. Biogeographical structure was found through southeastern Australia; three geographically isolated populations showed genetic differentiation, although minimal divergence was found across the proposed Hunter Valley barrier. A novel barrier was found separating inland and coastal populations in southern New South Wales. Little morphological divergence was observed within subspecies, bar a trend for birds to be larger in the more southerly parts of the species' range. The results from both novel and well-established genetic analyses were similar, providing greater confidence in the conclusions about spatial divergence and supporting the validity of these new techniques.

Genetic population structure and call variation in a passerine bird, the satin bowerbird, Ptilonorhynchus violaceus

Geographic variation in vocalizations is widespread in passerine birds, but its origins and maintenance remain unclear. One hypothesis to explain this variation is that it is associated with geographic isolation among populations and therefore should follow a vicariant pattern similar to that typically found in neutral genetic markers. Alternatively, if environmental selection strongly influences vocalizations, then genetic divergence and vocal divergence may be disassociated. This study compared genetic divergence derived from 11 microsatellite markers with a metric of phenotypic divergence derived from male bower advertisement calls. Data were obtained from 16 populations throughout the entire distribution of the satin bowerbird, an Australian wet-forest-restricted passerine. There was no relationship between call divergence and genetic divergence, similar to most other studies on birds with learned vocalizations. Genetic divergence followed a vicariant model of evolution, with the differentiation of isolated populations and isolation-by-distance among continuous populations. Previous work on Ptilonorhynchus violaceus has shown that advertisement call structure is strongly influenced by the acoustic environment of different habitats. Divergence in vocalizations among genetically related populations in different habitats indicates that satin bowerbirds match their vocalizations to the environment in which they live, despite the homogenizing influence of gene flow. In combination with convergence of vocalizations among genetically divergent populations occurring in the same habitat, this shows the overriding importance that habitat-related selection can have on the establishment and maintenance of variation in vocalizations.

Patterns of painting in satin bowerbirds Ptilonorhynchus violaceus and males' responses to changes in their paint

Satin bowerbirds Ptilonorhynchus violaceus have an elaborate multi-component sexual display, some components of which have been extensively studied. We describe a relatively unstudied component of this display, bower painting, and birds' responses to manipulations of their paint. Males of this species focus their display around a stick bower constructed on the forest floor which they decorate with a variety of objects and paint. Painting involves a male masticating plant material and wiping the plant-saliva mixture onto the inside walls of the bower; during courtship visits to bowers, females nibble at this paint. We found that 93% of 53 males painted their bowers at our study site and the time males spent painting their bowers accounted for 24% of their time at the bower. We experimentally removed and added paint to bowers to test whether males respond to these changes in their paint. Males gave more advertisement calls and spent less time manipulating sticks at the bower when we added fresh wet paint to their bowers compared to older dried paint or a control treatment. They did not respond to the removal of paint from their bowers, perhaps because it was primarily older dried paint that was removed. We also found that males painted more frequently when there was measurable wind in their bowers, which could have degraded the quality of the signal. Our findings indicate that fresh wet paint is more important to males than older dried paint and, together with previous work at this site, suggest that paint may act as a signal to females. Given that females nibble bower sticks during courtship, we suggest that bower paint may function as a chemical sexual signal rather than a visual signal.

Theft of bower decorations among male Satin Bowerbirds (Ptilonorhynchus violaceus): why are some decorations more popular than others?

Male Satin Bowerbirds (Ptilonorhynchus violaceus) build stick structures known as bowers that serve as the focus for courtships and matings. Males decorate their bowers with numerous coloured decorations and are known to steal these decorations from one another. We investigated the stealing of bower decorations among males at the Bunya Mountains in Queensland, Australia. We aimed to (1) determine which classes of decorations were targets for theft in the studied population, and (2) examine whether the frequency at which individual decorations were stolen related to their intrinsic properties. To address our first aim, all decorations on the bowers of 21 adult males were labelled and their movements tracked throughout one mating season. To address our second aim, decorations stolen at least three times during the season were collected and their morphological and reflectance properties compared to those of decorations that were not stolen. In terms of the classes of decorations, tail feathers of Crimson Rosella (Platycercus elegans) were stolen more than any other class of decoration, but blue plastic bottletops were the most popular decorations relative to their availability on bowers. Frequently stolen individual decorations were similar to non-stolen items in their weights and surface areas, but were darker blue in colour than the decorations never stolen. Both bottletops and feathers reflected higher levels of ultraviolet (UV) light than did all other classes of bower decorations tested, thus suggesting that males may be using UV reflectance in sexual signalling. The darker blue, stolen decorations may increase contrast between the decoration collection and the platform, while the UV-reflecting subset of most frequently stolen decorations (bottletops and feathers) may increase contrast within the decoration collection. This in turn may increase the attractiveness of the display to females.

O PERDÃO: A ABORDAGEM DE GIRARD E OS BENEFÍCIOS EXISTENCIAIS DE UMA NOVA VISÃO DE PERDOAR

Em sua teoria mimética do desejo, René Girard apresenta Cristo como modelo ideal a ser seguido, uma vez que Jesus demonstrou como é possível resolver conflitos sem associá-los à vingança ou à violência. Através de sua vitimização na Cruz, Jesus revela toda a verdade de quem somos e quem Deus é, ao manifestar sua inocência, Ele reverte para si a acusação daqueles que se mantêm no círculo da auto justificação por transferência da culpa. Assim, o Cristo decide, por sua livre vontade, perdoar. Isto é, uma nova forma de perdão, que denominamos novum. Fundamentado no amor, ele vem de fora e fura o círculo da violência. O novum revela uma nova maneira de se relacionar com as pessoas que nos prejudicaram, de tentar compreender quem somos através do Outro. Essa nova mimesis valoriza a vida, a liberdade, o cuidado com o próximo, a reconciliação mais do que ofertas e sacrifícios. Trata-se de uma superação dialética, pois, apesar de nesse processo a decisão de perdoar estar de posse do sujeito sendo esta uma via de mão única , a decisão de reconciliação depende também do ofendido/ofensor, esta outra, via de mão dupla . Através do novum é possível mudar o sentido do passado, destruir a fatalidade e não ter necessidade de continuar como refém da culpa. Esta atitude possibilita o sujeito olhar o futuro com esperança. Ao focar a Paixão e a Ressurreição, o sujeito descobre quem ele realmente é e poderá decidir seguir o modelo Cristocêntrico. Essa decisão leva-o a sair da mimesis violenta e passar a elaborar a vontade, para então decidir perdoar àquele que o ofendeu. O sujeito, por fim, reconhece o perdão novum como modelo que ao ser imitado e doado é capaz de refazer a pessoa de seu doador, bem como àquele que é perdoado.

ESPIRITUALIDADE E EDUCAÇÃO PARA A LIBERDADE: o opressor hospedado no oprimido de Paulo Freire e a teoria do desejo mimético de René Girard

Este estudo discute a relação entre espiritualidade e educação para a liberdade, a partir da perspectiva antropológica da natureza mimeticamente desejante do ser humano como elemento chave para a compreensão das relações humanas, e da espiritualidade como dimensão fundamental para o engajamento na luta pela transformação da sociedade. Por meio de pesquisa bibliográfica, procede-se à análise do problema identificado por Paulo Freire, de que o opressor hospedado no oprimido representa um obstáculo para a libertação, sob a ótica da teoria do desejo mimético de René Girard. Trabalha-se com a hipótese de que o elemento antropológico fundamental presente no pensamento de Paulo Freire, esquecido à medida que sua proposta pedagógica assumiu um caráter meramente conscientizador, referese à dimensão da espiritualidade. Diante do abismo que se coloca entre a utopia da libertação e a realidade instaura-se o cenário de crise que recai, não apenas sobre educadores formais, como também sobre muitos daqueles que, em algum momento de suas vidas, se engajaram na luta pela transformação social. Uma vez que o método é sabido, e é conscientizar, o fato de que a transformação sonhada não tenha ocorrido leva a conclusão de que alguma coisa falhou no processo.(AU)

ESPIRITUALIDADE E PEDAGOGIA DO DESEJO: UM DIÁLOGO ENTRE PAULO FREIRE E RENÉ GIRARD

A exploração e a manipulação do desejo são algumas das principais marcas da cultura de consumo. Nas sociedades em que predomina essa cultura, o consumo aparece como critério de humanização, e o sentido da vida o núcleo ético-mítico em torno do qual a sociedade se organiza é a busca de acumulação de riqueza para se consumir cada vez mais. Alguns estudos têm demonstrado os aspectos sagrados dessa cultura, que se tornou uma verdadeira religião da vida cotidiana, com suas devoções, espiritualidades, mitos e ritos. Da mesma forma, alguns estudos vêm demonstrando como essa cultura determina os projetos pedagógicos. Esses estudos não são acidentais, pois religião e educação são elementos fundamentais na origem e na manutenção de qualquer cultura e sociedade humanas. Todavia, podem ser também elementos de transformação. Paulo Freire acena com o interesse pela criação de uma Pedagogia do Desejo, compreendendo que este tema é de fundamental importância na luta pela superação da exclusão social, o que infelizmente não teve tempo de formulá-la. A obra de René Girard reforça a tese de que a religião é um processo fundamental para as sociedades humanas, considerando sua real função na origem da cultura. Segundo Girard, a religião é a educadora da humanidade no processo de humanização e socialização. E sua característica mais notável é justamente a de educar o desejo, pois, devido a sua natureza mimética, constantemente é gerador de violência. Nas pesquisas sobre as relações entre Religião/Teologia e Educação, recentemente tem sido realizado o estudo dos pressupostos teológicos e espirituais das propostas educacionais. Há muitos pontos de convergência entre Paulo Freire e René Girard, alguns até complementares. O diálogo entre esses dois autores se mostra muito profícuo na discussão do tema do desejo em relação com a espiritualidade e a educação. Este trabalho é uma tentativa de buscar elementos que favoreçam a elaboração de uma Pedagogia do Desejo a partir das contribuições das Ciências da Religião.(AU)

The non-violence of love:a Hildebrand-Girard encounter

If love is a social as well as a personal reality, it could be fruitful to compare Von Hildebrand’s understanding of love and desire with that of cultural anthropologist René Girard. Girard depicts love and desire as a triangular process which arises from imitation, rather than the result of auto-generative affection. In this sense, Girardian theory would seem to convict Von Hildebrand of what is called the romantic lie wherein desire is thought to arise through the mutual appreciation of two subjects. However, in The Nature of Love Von Hildebrand shows his awareness of the possibility that love can be awakened by imitation. Moreover, the lack of a sufficient reason in Girardian theory for avoiding violence can be answered by turning to Von Hildebrand’s appreciation of the ontological basis for desire.

Mística y seducción : el affaire Cadière-Girard y el triunfo de la racionalidad ilustrada en Thérèse philosophe

[en] This article aims at examining the theoretic and literary models of sexuality offered in the libertine novel Thérèse philosophe, focusing on its representation of the Cadière-Girard affair. During this scandalous trial that took place in the Parliament of Aix-en-Provence in 1731, Jean-Baptiste Girard (Jesuit priest) was accused by Marie-Catherine Cadière (penitent) of sorcery and sexual abuse, while he claimed these charges were calumnies. We seek to show the development of a rationalist, demystifying, scientific perspective on this affair, characteristic of Enlightenment in the eighteenth century, which tended to neutralize and obliterate charismatic religiosity. [fr] Cet article a pour but d’examiner les modèles théoriques et littéraires de la sexualité offerts par le roman libertin Thérèse philosophe, en se concentrant sur la façon dont l’affaire Cadière-Girard y est représentée. Pendant ce procès judiciaire qui a eu lieu au Parlement d’Aix-en-Provence en 1731, Jean-Baptiste Girard (père jésuite) a été accusé par Marie-Catherine Cadière (pénitente) de sorcellerie et abus, ayant reçu elle-même une dénonciation pour calomnies. On cherche à montrer le développement, autour de cette affaire, d’une perspective rationaliste, démystifiante et scientifique, propre des Lumières au XVIIIe siècle, à partir de laquelle la religiosité charismatique se neutralise au point de l’oblitération.

Lo trágico y la lástima. “Discurso de respuesta a René Girard”

¿De dónde llegan hasta acá esos ladridos? ¿Reconocemos igualmente en el relato de Theramen, los caballos desbocados que arrastran el cadáver de Hi­pólito por la playa, descuartizado? ¿Quiénes son estas serpientes que silban sobre vuestras cabezas? Gracias, señor, por habernos hecho escuchar, en esos ladridos, esos relinchos, estos aullidos de animales rabiosos, nuestras propias vociferaciones; de haber desvelado, en esta jauría sangrienta, en esta yunta desbocada, en este nudo de víboras, en estos animales encarnizados, la violencia abominable de nuestras sociedades; de haber revelado finalmente en estos cuerpos despedazados, las víctimas inocentes de los linchamientos que perpetramos.

Muere René Girard, antropólogo y teórico de la “violencia mimética"

El antropólogo René Girard murió el miércoles 4 de noviembre [2015] en Stanford, en los EE. UU. Tenía 91 años. Fundador de la “teoría mimética”, ese francoti­rador de la escena intelectual había construido una obra original que conjuga reflexión científica y predicación cristiana. Sus libros, comentados en los cuatro rincones del mundo, forman las etapas de una vasta averiguación sobre el de­seo humano y sobre la violencia sacrificial donde toda sociedad, según Girard, encuentra su origen inconfesable.