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Una asociación de plantas huésped y pulgón de 48 millones de años y un ciclo de vida complejo: evidencia
Science (New York, N.Y.)
|July 14, 1989
Resumen
Las antiguas relaciones áfido-planta, evidenciadas por la biogeografía y la paleobotánica, revelan que la subtribu Melaphidina
Área de la Ciencia:
- Biología evolutiva Biología evolutiva.
- La paleoecología es paleoecología.
- Interacciones entre insectos y plantas.
Sus antecedentes:
- La subtribu de áfidos Melaphidina tiene una asociación de larga data con el sumac (Rhus spp. En el caso de las personas que se encuentran en situación de exclusión social.
- Esta asociación se remonta al Eoceno temprano, con evidencia de una distribución continua a través del puente terrestre de Bering.
Objetivo del estudio:
- Para investigar la historia evolutiva de la subtribu Melaphidina y sus asociaciones de plantas huésped.
- Para entender los orígenes de los complejos ciclos de vida en las especies de Melaphidina.
Principales métodos:
- Utilizó evidencias biogeográficas y paleobotánicas.
- Realizó experimentos de transferencia con la especie americana Melaphis rhois.
Principales resultados:
- Melaphis rhois exhibe un ciclo de vida complejo, que incluye generaciones que se alimentan de musgos, similar a las melafidas chinas.
- Este complejo ciclo de vida probablemente evolucionó antes de la separación de las poblaciones de sumác en Alaska hace ~48 millones de años.
Conclusiones:
- Las historias de vida e interacciones de los áfidos modernos están significativamente moldeadas por antiguos eventos evolutivos.
- La relación Melaphidina-sumac y los complejos ciclos de vida son ejemplos de compromisos evolutivos a largo plazo.
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