Peces continentales de la Argentina: Iconografía. Cheirodon interruptus

The goal of this work is to present a collection of drawings and figures depicting the species present in our country. To achieve this, our main sources of information have been the works of Ringuelet et al. (1967), Reis et al. (2003), and López et al. (2003; 2006), as well as the online databases of W. N. Eschmeyer and Fish Base. Each species has an individual factsheet with selected images, including some from anatomical research works. All the works referenced are mentioned in each factsheet. This is an open-ended publication. As such, it will require permanent updating,which will depend on the good will and collaboration of the ichthyological community. As compilers, we understand that this contribution not only provides valuable information, but also highlights the work of men and women who are part of the rich history of our national and regional ichthyology.

Peces continentales de la Argentina: Bibliografía. Cheirodon interruptus

The goal of this work is to compile the existing information about the species present in our country. This has been done by means of datasheets that list both local references and reviews by foreign authors that include Argentine taxa. The main information sources consulted were Ringuelet et al. (1967), CLOFFSCA (2003), López et al. (2003; 2006), Liotta (2006) and the online databases of W. N. Eschmeyer and Fish Base. This is an open-ended publication. As such, it will require permanent updating,which will depend on the good will and collaboration of the ichthyological community. With this contribution, we hope to help to build a database of the freshwater fish of Argentina. The completion of this project will provide support to diverse plans emanating from different sectors, as well as promote the diffusion of this field of research and reaffirm Argentina’s sovereign rights over our natural resources.

Ictiólogos de la Argentina: Mariano Narciso Antonio José Castex

This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina. The general plan of this work consists of individual factsheets containing a list of works by each author, along with reference bibliography and, whenever possible, personal pictures and additional material. The datasheets will be published primarily in chronological order, although this is subject to change by the availability of materials for successive editions. This work represents another approach for the recovery and revalorization of those who set the foundations of Argentine ichthyology while in diverse historical circumstances. I expect this to be the beginning of a major work that achieves the description of such a significant part of the history of natural sciences in Argentina.

Lista comentada de la ictiofauna del Canal Beagle, Tierra del Fuego, Argentina. Iconografía.

A ciento veintidós años de las primeras menciones realizadas por Perugia en 1891 sobre peces del Canal Beagle, editamos la presente iconografía que incluye alrededor de treinta especies de las mencionadas por López et al., en 1996. Este trabajo, desarrollado en el CADIC dentro del proyecto Biología de los recursos ictícos del Canal de Beagle financiado por el CONICET, junto al publicado por Lloris y Rucabado (1991), proveyeron elementos de base para tener una visión más profunda del componente ictiofaunistíco de la región. En la presente publicación se destaca la magnífica obra del maestro Miguel Barbagallo, quién vuelca su capacidad y espíritu en estas láminas, las que además de su valor artístico son un aporte más a la consolidación del conocimiento de los recursos naturales de nuestro país.

Ictiólogos de la Argentina: Stella Maris Refi

This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina. The general plan of this work consists of individual factsheets containing a list of works by each author, along with reference bibliography and, whenever possible, personal pictures and additional material. The datasheets will be published primarily in chronological order, although this is subject to change by the availability of materials for successive editions. This work represents another approach for the recovery and revalorization of those who set the foundations of Argentine ichthyology while in diverse historical circumstances. I expect this to be the beginning of a major work that achieves the description of such a significant part of the history of natural sciences in Argentina.

Ictiólogos de la Argentina: Elly Ana Cordiviola

This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina. The general plan of this work consists of individual factsheets containing a list of works by each author, along with reference bibliography and, whenever possible, personal pictures and additional material. The datasheets will be published primarily in chronological order, although this is subject to change by the availability of materials for successive editions. This work represents another approach for the recovery and revalorization of those who set the foundations of Argentine ichthyology while in diverse historical circumstances. I expect this to be the beginning of a major work that achieves the description of such a significant part of the history of natural sciences in Argentina.

Ictiólogos de la Argentina: Amalia María Miquelarena

This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina. The general plan of this work consists of individual factsheets containing a list of works by each author, along with reference bibliography and, whenever possible, personal pictures and additional material. The datasheets will be published primarily in chronological order, although this is subject to change by the availability of materials for successive editions. This work represents another approach for the recovery and revalorization of those who set the foundations of Argentine ichthyology while in diverse historical circumstances. I expect this to be the beginning of a major work that achieves the description of such a significant part of the history of natural sciences in Argentina.

Ictiólogos de la Argentina: Juan Carlos Vidal

This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina. The general plan of this work consists of individual factsheets containing a list of works by each author, along with reference bibliography and, whenever possible, personal pictures and additional material. The datasheets will be published primarily in chronological order, although this is subject to change by the availability of materials for successive editions. This work represents another approach for the recovery and revalorization of those who set the foundations of Argentine ichthyology while in diverse historical circumstances. I expect this to be the beginning of a major work that achieves the description of such a significant part of the history of natural sciences in Argentina.

Ictiólogos de la Argentina: José Gustavo Haro

This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina. The general plan of this work consists of individual factsheets containing a list of works by each author, along with reference bibliography and, whenever possible, personal pictures and additional material. The datasheets will be published primarily in chronological order, although this is subject to change by the availability of materials for successive editions. This work represents another approach for the recovery and revalorization of those who set the foundations of Argentine ichthyology while in diverse historical circumstances. I expect this to be the beginning of a major work that achieves the description of such a significant part of the history of natural sciences in Argentina.

Filosofia com crianças: cenas de experiência em Caicó (RN), Rio de Janeiro (RJ) e La Plata (Argentina)

Partilhar uma experiência a partir da própria experiência. Esse é o desejo que se revela no exercício de escrita desse texto, o qual tem por objeto de estudo a experiência, seu significado e sentidos revelados pelo trilhar da experiência nos deslocamentos em cenários e cenas em Caicó/RN, Rio de Janeiro/RJ e La Plata/ARG. Enfrenta a constante e incômoda sensação da impossibilidade de narrar uma experiência. Torna público e dialoga com fragmentos/capturas advindas das cenas da experiência e com diversos/as autores/as que se constituem como ecos que ressoam na trajetória de pesquisa. Os espaços-cenários onde ocorre essa experiência-pesquisa envolvem, de diferentes formas, tentativas de se fazer filosofia com crianças. São atravessados pela experiência de buscar caminhos, rotas, brechas para abrir no cenário da escola pública possibilidades para a experiência de pensamento entre crianças e adultos. Entre os vários temas que se implicam e dialogam nesse contexto, ressalto: o fazer filosofia com crianças em escolas públicas, a infância, e a relação aprender e ensinar. São alguns dos elementos que compõem essa escrita e com as quais busco dialogar inspirada nas vozes dos/as interlocutores/as nela envolvidos/as. Ao final, os desdobramentos da trilha da pesquisa/experiência demarcam uma relação potente entre filosofia e educação, a qual provoca formação, transformações, rupturas, resistências, encontros, infâncias.

Dibujantes de la Argentina: Edmundo Maristany.

En esta colección de la Serie Documentos presentamos a los dibujantes y artistas que pasaron por nuestra institución, lo que representa una tarea nada fácil. Sin embargo, con las imperfecciones del caso, iniciamos este trabajo esperando que, en un futuro próximo, esta iniciativa sea continuada dentro de las diferentes Divisiones que conforman la estructura de nuestro Museo. En este primer artículo mostramos algunas de las imágenes que pudimos rescatar de Edmundo Maristany, una figura polifacética, ya que, entre sus logros se encuentra el descubrimiento de un cometa que hoy lleva su nombre y el escrito de sonetos publicados en la década del cincuenta. A través de sus dibujos de vertebrados, sabemos que trabajó para el Dr. Emiliano Mac Donagh en el Museo de La Plata y para el Dr. Carlos Marelli en el Jardín Zoológico de nuestra ciudad.

Seasonal egg production of whitemouth croaker (Micropogonias furnieri) in the Río de la Plata estuary, Argentina-Uruguay

The reproductive biology of the whitemouth croaker (Micropogonias furnieri) inhabiting the estuarine waters of the Río de la Plata (Argentina-Uruguay) was studied by using histological analysis of the ovaries. Samples were collected during the spawning peak and the end of two breeding seasons (November 1995–Feb-ruary 1996 and November 1997–March 1998). Micropogonias furnieri is a multiple spawner with indeterminate annual fecundity. Spawning frequency, determined by using the percentage of females with postovulatory follicles, was about 31% in November 1995 and 25% in February 1996. At these frequencies, a female on average spawned a new batch of eggs every 3–4 days during the spawning season. Batch fecundity was fitted to a power function of length and a linear function of ovary-free female weight. The number of hydrated oocytes decreased at the end of the breeding season, coinciding with an increase of atresia. Annual egg production for a 40-cm-TL female was estimated to be between 3,300,000 and 7,300,000 eggs. In addition to the seasonal decrease in fecundity and spawning activity, a decline in egg size and weight toward the end of the breeding season was also observed.

Expedición naútica científica Fray Francisco Morillo, río Bermejo, Argentina, 29/09-10/10/1984

El próximo septiembre se cumplen treinta años de la llamada Expedición Naútica-Cientifíca “R. P. Francisco Morillo” realizada en botes neumáticos por un grupo de personas de diferentes orígenes y entre los que se encontraban naturalistas y profesionales de las Ciencias Naturales. A nivel profesional fue una gran experiencia, ya que me permitió transitar por un ámbito geográfico de difícil acceso, con flora y fauna cuya referencia la tenía solo a través de textos. Por otra parte y mirado a la distancia, fue muy interesante el comportamiento humano del grupo. Entiendo que un sociólogo podría dar alguna interpretación, pero he visto de todo, actos de solidaridad, de mezquindad, egoísmo y de cierta locura, como por ejemplo, querer matar un yacaré por el simple hecho de que estaba en la playa tomando sol. En este caso, la suerte estuvo del lado de la noble bestia, ya que los involucrados en las Ciencias Naturales pudimos detener semejante barbaridad y hacer comprender a los de “gatillo fácil” que no había ningún sentido en lo que querían hacer. Irónicamente, entre otras cosas, este viaje tenía dentro de sus objetivos participar en un Congreso de Conservación… Los objetivos del viaje para los naturalistas, sólo se cumplieron en parte, ya que al principio de esta travesía comenzaron a suscitarse problemas, principalmente por las características del río, lo que dificultó, por falta de tiempo, la toma de muestras y las consiguientes observaciones. A nivel personal me queda la riqueza que me dio esta experiencia y el haber conocido a dos personas que me llamaron profundamente la atención. A nuestro baqueano José “Pipo” Marty, un hombre generoso y de una gran sabiduría. El otro fue Exequiel Martínez, al que conocí en el congreso que se realizaba en Resistencia y con quién, a partir de ese momento, me une un lazo afectivo que nace de un profundo respeto y admiración.

Ictiólogos de la Argentina: Norberto Oscar Oldani

This series will include all those people who, by means of their contributions, great and small, played a part in the consolidation of ichthyology in Argentina. The general plan of this work consists of individual factsheets containing a list of works by each author, along with reference bibliography and, whenever possible, personal pictures and additional material. The datasheets will be published primarily in chronological order, although this is subject to change by the availability of materials for successive editions. This work represents another approach for the recovery and revalorization of those who set the foundations of Argentine ichthyology while in diverse historical circumstances. I expect this to be the beginning of a major work that achieves the description of such a significant part of the history of natural sciences in Argentina.