IIMYC 23581
INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Unidad Ejecutora - UE
artículos
Título:
Spatio-temporal population and reproductive responses in Perinereis gualpensis (Polychaeta: Nereididae) from estuaries under different anthropogenic influences
Autor/es:
DÍAZ JARAMILLO, M.; SANDOVAL N. ; BARRA, R.; GILLET, P.; VALDOVINOS C.
Revista:
CHEMISTRY AND ECOLOGY
Editorial:
TAYLOR & FRANCIS LTD
Referencias:
Lugar: Londres; Año: 2015 vol. 07 p. 308 - 319
ISSN:
0275-7540
Resumen:
Reproductive and population-level responses are ecologically relevant diagnostic tools for revealing the cost of long-term tolerance to contaminants. Spatial density distribution, seasonal density, biomass, size frequency histograms and oocytes stages in Perinereis gualpensis (Polychaeta: Nereididae) from a highly anthropogenically impacted estuary (Lenga, south-central Chile) were compared with low-polluted estuaries (Tubul and Raqui). Spatial distribution showed that the highest P. gualpensis abundances occur in the central (middle) estuarine area, establishing them as suitable zones for comparisons of estuaries. Middle areas also showed differences among estuaries in terms of population and reproductive responses. Mature stage oocytes and juvenile recruitment limited to certain seasons and low adult survival led to significant low densities and biomasses in Lenga individuals (p
