Abstract (en):
Populations of invasive species may differ in the characteristics that determine the intensity of their effects on native ecosystems. The study of morphological variation provides valuable information on different evolutionary and ecological processes. In order to evaluate the patterns of morphological variation of the African Snail (Achatina fulica), an invasive species present in the department of Valle del Cauca, individuals were collected in urban areas of 4 municipalities (Buenaventura, Cali, Tuluá and Cartago). An analysis of geometric morphometry and classification based on the pattern of bands was performed on the collected specimens. A significant morphological variation within the population was found, along with a total of 13 patterns of bands or coloration in the entire sample. Environmental conditions of each locality and controls exerted by the environmental authority are proposed as possible causes of variation.
Abstract (es):
Las poblaciones de las especies invasoras pueden diferir en las características que determinan la intensidad de sus efectos sobre los ecosistemas nativos. El estudio de la variación morfológica aporta información valiosa sobre diferentes procesos evolutivos y ecológicos en las especies. Con el objetivo de evaluar los patrones de variación morfológica del caracol gigante africano (Achatina fulica), una especie invasora presente en el departamento del Valle del Cauca, se colectaron individuos en las zonas urbanas de 4 municipios (Buenaventura, Cali, Tuluá y Cartago). A estos especímenes se les realizó un análisis de morfometría geométrica y clasificación con base en el patrón de coloración. Se encontró que existe variación morfológica significativa dentro de la población, además del patrón de bandas o coloración, con un total de 13 patrones en toda la muestra. Se proponen las condiciones ambientales de cada localidad y los controles realizados por la autoridad ambiental como posibles causantes de la variación.
Keywords:
Estructura etaria, Invasión biológica, Moluscos, Morfología, Patrón de coloración (es)
Age range, Biological invasion, Color patterns, Morphology, Mollusks (en)
Age range, Biological invasion, Color patterns, Morphology, Mollusks (en)
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How to Cite
Patiño-Montoya, A., Murillo, O., & Giraldo, A. (2018). Morphological variation in the populations of an invasive species: the Giant African Snail Achatina fulica (Bowdich, 1822) (Mollusca: Gastropoda-Achatinidae) in the department of Valle del Cauca, Colombia. Biota Colombiana, 19(1), 112–122. https://doi.org/10.21068/c2018.v19n01a07
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