Florida Entomologist (2002) 85, 73-82

From Pestinfo-Wiki
Jump to: navigation, search

O. Hasson and Y. Rossler (2002)
Character-specific homeostasis dominates fluctuating asymmetries in the medfly (Diptera: Tephritidae)
Florida Entomologist 85 (1), 73-82
Abstract: Fluctuating asymmetry (FA) indicate random variation in size of bilaterally-produced traits, which occurs during development, and hence measures the degree of developmental instability. Whole-individual homeostasis has been assumed responsible for the negative correlation that has often been found between FA of many sexually selected traits and their size. We show that, theoretically, character-specific homeostasis can provide an equally convincing explanation for this correlation. Furthermore, we tested these two hypotheses for (1) a sexually dimorphic character and (2) sexually monomorphic characters of the male Mediterranean fruit fly, Ceratitis capitata, by manipulating density during larval development. Our results clearly support character-specific homeostasis.

La fluctuación asimétrica (FA) indica variación aleatoria en el tamaño de los rasgos producidos bilateralmente, los cuales ocurren durante el desarrollo, y por lo tanto mide el grado de inestabilidad del desarrollo. La homeóstasis de individuos completos ha sido asumida como la responsable de la correlación negativa que frecuentemente ha sido encontrada entre FA de muchos rasgos sexualmente seleccionados y de su tamaño. Se demuestra teóricamente, que la homeóstasis carácter-especifica puede proporcionar una explicación igualmente convincente para esta correlación. Además, se probaron estas dos hipótesis con respecto a 1) un carácter sexualmente dimórfico y 2) caracteres sexualmente mono-mórficos de los machos de la mosca del Mediterráneo, Ceratitis capitata, por medio de la manipulación de la densidad durante el desarrollo larval. Nuestros resultados claramente apoyan la homeóstasis carácter-específica.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Yoram Rössler

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Ceratitis capitata