El altruismo y el engaño social en la ameba social Dictyostelium discoideum
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Updated: May 15, 2026
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Investigating the Function of Coronin A in the Early Starvation Response of Dictyostelium discoideum by Aggregation Assays
Published on: June 18, 2016
J E Strassmann1, Y Zhu, D C Queller
1Department of Ecology and Evolutionary Biology, Rice University, Houston, Texas 77251-1892, USA. strassm@rice.edu
Nature
|January 5, 2001
Resumen
La ameba social, Dictyostelium discoideum, forma quimeras a partir de clones mezclados. Muchas mezclas muestran clones "tramposos" explotando a otros, revelando competencia en el desarrollo, no solo cooperación.
Área de la Ciencia:
- Biología evolutiva Biología evolutiva.
- Biología del desarrollo Biología del desarrollo.
- Comportamiento social Comportamiento social.
Sus antecedentes:
- Dictyostelium discoideum es un organismo modelo para el desarrollo multicelular.
- Las células se agrupan al morir de hambre para formar una babosa, y algunas células altruistas forman un tallo estéril.
Objetivo del estudio:
- Investigar la dinámica social y el potencial de explotación entre diferentes clones de Dictyostelium discoideum durante el desarrollo.
- Para determinar si el desarrollo cooperativo es la norma o si existe competencia entre los clones.
Principales métodos:
- La recolección de clones de Dictyostelium discoideum de una población natural.
- La creación de mezclas quiméricas de diferentes clones.
- El uso de marcadores microsatélites para rastrear la contribución de clones e identificar la explotación.
Principales resultados:
- Diferentes clones se mezclaron fácilmente para formar quimeras.
- La mitad de las mezclas quiméricas exhibieron claros clones de "tramposo" y "víctima".
- Evidencia de selección para que los clones exploten a otros mediante la reducción de la contribución del tallo.
Conclusiones:
- El desarrollo de Dictyostelium discoideum implica competencia y conflictos de intereses entre los clones, no sólo pura cooperación.
- Esta competencia social la convierte en un modelo valioso para estudiar la evolución social.
- Los hallazgos complican su uso como modelo de desarrollo puramente cooperativo.
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