The Actor-Document: traits of a poetics that challenges the limits between presence and representation

ABSTRACT During the 1960s and 1970s, Argentine theater experienced an almost simultaneous interest in the documentary and the political, as well as a experimental hybridization of forms. Later developments led to the autobiographical theater of the 1980s and 1990s and to the biodrama of the 2000s. Mi vida después [My life after] by Lola Arias is a renowned play derived from these traditions. By analyzing the model of acting of this work and study the figure of the actor-document and its contribution to contemporary theater. The actor in this model brings into crisis notions of illusion and mimesis and challenges the limits between fiction and reality by constantly oscillating amidst presence and representation.

Evidence that pleiotropic alleles underlie adaptive divergence between natural populations

The alleles used for adaptation can pleiotropically affect traits under stabilizing selection, and compensatory alleles can be favoured by selection to counteract such deleterious pleiotropy. Such compensatory alleles can segregate in interpopulation hybrids, causing segregation variance for traits where parents have the same phenotype. If adaptation typically involves pleiotropy and compensation, then the segregation variance for traits under stabilizing selection is expected to increase with the magnitude of adaptive phenotypic divergence between parents. This prediction has not been tested empirically, and I gathered data from experimental hybridization studies to evaluate it. I found that pairs of parents which are more phenotypically divergent beget hybrids with more segregation variance in traits where the parents do not differ. This result suggests that adaptive divergence between pairs of natural populations proceeds via pleiotropy and compensation, and that potentially deleterious transgressive segregation variance accumulates systematically as populations diverge.

Experimental hybridization to produce F1 from a cross between gogo-dryland and paddy-field rice cultivars subjected to different environmental conditions in Indonesia

Rice (Oryza sativa L.) is a staple crop in Indonesia. Despite its main importance for the Indonesia’s food supply, the production is influenced by several factors. One factors which influence rice yield is drought stress. The experiment was conducted in two fields namely Talok village and Jatimulyo village. The parental lines were gogo-dryland and paddy-field rice types. In Talok village, the success rate of hybridization ranged from 47% to 85% while in Jatimulyo village 16.33% to 38.67%. The result of student T-test for the width of brown rice in Talok village field showed a significant difference through Situ Bagendit x Ciherang and Situ Bagendit x Cibogo. While in Jatimulyo village field, student T-test for the length of brown rice showed very significant difference through Inpago x IR64 and Inpago x Ciherang. Besides, the width of brown rice showed very significant difference through Inpago x IR64 and Inpago x Ciherang.

New Transbaikalian finds of the Muja Valley vole (Rodentia: Cricetidae: Alexandromys mujanensis)

The Muja vole, Alexandromys mujanensis Orlov et Kovalskaya, 1975, was described in the result of the karyological analysis and experimental hybridization. Since the first description the Muja vole has been considered to inhabit only the Muja Valley. Some Far Eastern voles were collected in 2013 and 2014 from the Dzherginsky Nature Reserve of the Barguzin Valley (Dzhirga sample), and the Baunt Lake vicinity (Baunt sample) (Transbaikalia, Buryatia). The species from these geographic localities were identified by use of karyotypic and cytb-gene analyses. On the cytb-gene tree these voles are in the same clade with Muja voles from the type locality (the Muja Valley). The karyotype of the vole from Barguzin Valley corresponds to that previously described for the Muja voles (Meyer et al. 1996). According to the result of the shape analysis of m1 occlusal surface the sample from the Baunt Valley includes two species – A. mujanensis and A. maximowiczii. Unless more detailed analysis of the material from the different parts of the Baunt Valley is carried out, we suppose it to be inhabited by three species – A. maximowiczii, A. mujanensis, and according to the data from literature – A. oeconomus. So far as some molecular-genetic differences between Muja voles from the Dzhirga and Baunt Lake vicinity were found, the experiments on hybridization between them were set. The F1 hybridization between them were fertile. A. mujanensis taxonomic position and terms of its origination are discussed.