Effects of copper on early developmental stages of Lessonia nigrescens Bory (Phaeophyceae)

Loretto Contreras, Matías H. Medina, Santiago Andrade, Valeria Oppliger, Juan A. Correa

Resultado de la investigación: Contribución a una revistaArtículo

22 Citas (Scopus)


Copper effects on the early developmental gametophytic and sporophytic stages of the kelp Lessonia nigrescens were tested in gradients of increasing concentrations of ASV-labile copper. The results demonstrated a high sensitivity to copper of all life-history stages of the alga, where even the lowest tested concentration affected spore release as well as their subsequent settlement. More significant, concentrations higher than 7.87 μg L-1 totally interrupted the development of the spores after they settle. This effect led to a failure in the formation of male and female gametophytes and, as a consequence, to a complete disruption of the normal life cycle of the kelp. Thus, we suggest that the absence of L. nigrescens from copper-enriched environments results from the high sensitivity of its early life cycle stages, which limits growth and maturation of the gametophytic microscopic phase and, as a consequence, prevents development of the macroscopic sporophytic phase.

Idioma originalInglés
Páginas (desde-hasta)75-83
Número de páginas9
PublicaciónEnvironmental Pollution
EstadoPublicada - ene 2007

Áreas temáticas de ASJC Scopus

  • Toxicología
  • Contaminación
  • Salud, toxicología y mutagénesis
  • Medicina (todo)

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