Peces continentales de la Argentina: Iconografía. Gymnocharacinus bergii.

Espanol: Este trabajo tiene como objetivo la recopilación de dibujos y diferentes figuras de las especies presentes en nuestro territorio. Para ello, hemos utilizado como principales fuentes de información la obra de Ringuelet et al. (1967), Reis et al. (2003), López et al. (2003; 2006) y las bases de datos on-line de W. N. Eschmeyer y Fish Base. El tratamiento incluye una ficha individual con imágenes seleccionadas de la especie tratada y las que eventualmente hayan surgido por trabajos de índole anatómica. Se adjuntan las referencias de los trabajos utilizados en la confección de cada ficha. Esta es una publicación abierta, por lo que requerirá de actualización permanente, para lo cual sería necesario se sume a nuestra tarea la buena voluntad y colaboración de la comunidad ictiológica. Los compiladores entendemos que esta contribución, además de aportar valiosa información, rescata el trabajo de mujeres y hombres que son parte de la rica historia de la ictiología nacional y regional. (Texto en Espanol y PDF tiene viente dos paginas) English: 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. (Text is in Spanish. PDF contains 22 pages.)

Peces continentales de la Argentina: Iconografía. Lepidosiren paradoza.

Spanish: Este trabajo tiene como objetivo la recopilación de dibujos y diferentes figuras de las especies presentes en nuestro territorio. Para ello, hemos utilizado como principales fuentes de información la obra de Ringuelet et al. (1967), Reis et al. (2003), López et al. (2003; 2006) y las bases de datos on-line de W. N. Eschmeyer y Fish Base. El tratamiento incluye una ficha individual con imágenes seleccionadas de la especie tratada y las que eventualmente hayan surgido por trabajos de índole anatómica. Se adjuntan las referencias de los trabajos utilizados en la confección de cada ficha. Esta es una publicación abierta, por lo que requerirá de actualización permanente, para lo cual sería necesario se sume a nuestra tarea la buena voluntad y colaboración de la comunidad ictiológica. Los compiladores entendemos que esta contribución, además de aportar valiosa información, rescata el trabajo de mujeres y hombres que son parte de la rica historia de la ictiología nacional y regional. English: 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. (Texto en espanol y PDF tiene cuatorce paginas.)

Peces continentales de la Argentina: Iconografía. Brycon orbignyanus.

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: 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.

La estructura y reproducción de Acanthococcus antarcticus Hooker et Harvey

The present paper gives a full description of the organization of Acanthococcus antarcticus Hooker et Harvey, a not well known member of the Rhodophyllidaceae as well as gives for the first time description of the male and tetrasporic plants. Detailed organization of the carpogonial branches, spermatia and tetraspores is also presented. Nineteen figures illustrate the text (material collected at Deseado port, Santa Cruz prov., Argentina). The following text is the content of the discussion. From the description it is possible to confirm the position of Acanthococcus in the Rhodophyllidaceac as was done by Kylin (Kylin 1960, p. 290 et seg.). It has many similarities in the development of the carpogenic branches and in the formation of spermatia as well in the production of the zonately divided tetrasporangia with the genera of the family whose reproduction is known; Cystoclonium purpureum (Hudson) Batters and Rhodopyllis bifada (Good. et Woodw.) Kützing (Kylin 1923); Calliblepharis jubata (Good. et Woodw.) Kützing (Kylín 1928) and Craspedocarpus erosus (Hook. et Harvey) Sehmitz (Kylin 1932). Apparently the distinguishing feature of Acanthococcus is the structure of the vegetative frond, with the abundant development of rhizoidal filaments in the medula, besides the characteristic appendages of the cystocarps. Harvey's figure (Harvey 1847, P. 181, Fig. 3) of the tranverse section of the plant shows the central portion composed of a dense small-celled medula limited by a region of large cells which is externally covered by a small-celled cortex. As we have seen the small-celled filaments are not restricted to the central portion, but extend into the large-celled portion and can reach the cortex. On the other hand, the eros section of Acanthococcus depicted by Kützing (Kützing 1867, T. 93, Fig. h, under Callophyllis antartica), apparently belongs to another plant, so different in the structure when one compares his figure with Harvey's and the ones in this paper. RESUMEN EN ESPAÑOL Este trabajo presenta una completa descripción de la organización de Acanthococcus antarcticus Hooker et Harvey, un miembro poco conocido de las Rodofilidáceas, así como presenta por primera vez descripciones de las plantas masculinas y de las tetraspóricas. También por primera vez es presentada la organización detallada de las ramas carpogoniales, de los espermecios y de las trásporas. Diecinueve figuras completan el texto (material coleccionado en Puerto Deseado, Prov. Santa Cruz, Argentina).