Results 21 to 30 of about 1,383 (160)

Shape, Microstructure, and Chemical Composition of Pearls from the Freshwater Clam Diplodon chilensis Native to South America

Animals, 2023
The capability to produce pearls is widespread in the phylum Mollusca, including bivalves of the superfamily Unionoidea. Here, we identified and characterized natural pearls formed by Diplodon chilensis, a freshwater clam native to southern South America,
Gonzalo A. Collado, Moisés A. Valladares, Cristian Suárez, Mathias Seguel, Gerardo Cabello-Guzmán   +4 more
doaj   +1 more source

ANTECEDENTES ARQUEOLÓGICOS DEL GENERO DIPLODON (SPIX, 1827) (BIVALVIA, HYRIIDAE) EN CHILE [PDF]

Gayana (Concepción), 2008
Se presenta una revision bibliografica de los registros del genero Diplodon (Spix, 1827) (Hyriidae), presentes en sitios arqueologicos de Chile. Las evidencias indican una efimera presencia de estos bivalvos en contextos arqueologicos de finales del Pleistoceno, mientras que durante gran parte del Holoceno su registro es mas significativo. No obstante,
Jackson, Donald, Jackson, Douglas
openaire   +2 more sources

QUANTITATIVE KARYOTYPE OF DIPLODON CHILENSIS (GRAY 1828) (BIVALVIA:HYRIIDAE)

Gayana (Concepción), 2000
The karyotype of a freshwater population of Diplodon chilensis located in La Poza area of the Villarrica Lake (39o18'S; 72o05'W), Southern Chile, was studied. The chromosomes were obtained by squash of cleaving embryos, previously treated with colchicine and fixed in ethanol-acetic acid 3:1 at 4oC and stained using the Feulgen reaction.
Jara-Seguel, Pedro, Peredo, Santiago, Palma-Rojas, Claudio, Parada, Esperanza, Lara, Gladys   +4 more
openaire   +2 more sources

Análisis zooarqueológico del sitio Álvarez 4 (noroeste de Patagonia, Argentina). Un aporte al estudio de la subsistencia de los grupos humanos de la cuenca media del río Limay durante el Holoceno tardío

Arqueologia, 2022
Se presenta el análisis zooarqueológico y tafonómico del sitio Álvarez 4, un alero emplazado en la cuenca media del río Limay en el noroeste de Patagonia, Río Negro, Argentina.
Ailín A. Guillermo, Fernando Julián Fernández   +1 more
doaj   +1 more source

Does shell shape variation play a role in conservation of the long‐lived freshwater bivalve Diplodon chilensis (Bivalvia, Hyriidae)? [PDF]

, 2017
Freshwater bivalves of the order Unionoida display an uncommon phenotypic plasticity with high interpopulation and intrapopulation morphological variability, which could be advantageous for coping with habitat modifications.
Brey, Thomas, Luquet, Carlos M., Márquez, Federico, Rios de Molina, Maria, Rocchetta, Iara, Yussepone, Maria S.   +5 more
core   +1 more source

Relocation as a tool for biodiversity, conservation and management. Lessons from Diplodon Chilensis (GRAY 1828) (BIVALVIA, HYRIIDAE) [PDF]

, 2014
Entregamos las lecciones aprendidas de un proyecto de relocalización de largo plazo llevado a cabo con el hírido Diplodon chilensis. El documento analiza las causas de la declinación de las poblaciones en Chile y el uso de la relocalización como una ...

core   +1 more source

Manganese speciation inDiplodon chilensis patagonicusshells: a XANES study

Journal of Synchrotron Radiation, 2010
X-ray absorption near-edge spectroscopy (XANES) at the Mn K-edge was used to investigate the environment of Mn in situ within the growth increments of the long-lived freshwater bivalve species Diplodon chilensis patagonicus. Single XANES spectra and Mn Kalpha fluorescence distributions were acquired at submillimetre resolution (up to 100 microm x 50 ...
Soldati, A. L., Göttlicher, J., Jacob, D. E., Vicente Vilas, V.   +3 more
openaire   +3 more sources

Extensión del límite norte de la distribución actual del chorito de agua dulce diplodon Chilensis (Gray, 1828) (Bivalvia:hyriidae) en Chile [PDF]

, 2012
The extent of the northern distribution range of Diplodon chilensis is reported herein from specimens collected in the Rio Grande, an affluent of the Rio Limari located to the south of the village of Carachilla (30°28'S;71°05'W)

core   +1 more source

Diplodon: de parásitos a vida libre [PDF]

, 2020
En general, los moluscos presentan tres modelos básicos de ciclos de vida (Brusca y Brusca, 2005). En esta oportunidad, describiremos un ciclo de vida mixto, donde el estado de larva parasita al hospedador, un pez de agua dulce (Figura 1). Estas larvas pueden ocasionar problemas en cultivos de peces de agua dulce (Agudo-Padron, 2011).
Darrigran, Gustavo, Gentile, Lucía, Custodio, Heliana   +2 more
openaire   +1 more source

Time lapse photography with two different camera systems for in situ observation of the bivalve Diplodon chilensis (Gray, 1828) in a southern Chilean lake

Gayana, 2019
During the last 40 years time lapse photography has become a strong tool for in situ observations of marine and freshwater wildlife. We compared the validity of two low cost camera systems to analyze the filtration activity of Diplodon chilensis (Gray ...
Gesche Kohlberg, Anne Herbst, Gerd Niedzwiedz, Srefan Woelfl, Jorge Nimptsch, Dirk Schories   +5 more
doaj   +1 more source