Benefits, costs and reactivity of inducible defences: an experimental test with rotifers
Por:
Aránguiz-Acuña A., Ramos-Jiliberto R., Sarma N., Sarma, SSS, Bustamante R.O., Toledo V.
Publicada:
1 oct 2010
Categoría:
Aquatic Science
Resumen:
P>1. A key aspect of the ecology and evolution of adaptive prey responses to predator risk is the timing by which the former develop a defensive trait in response to inducing signals released by the latter. This property, called reactivity, has been shown to affect population stability and persistence. 2. Theoretically, the minimal predator density required by prey to exhibit induced defences is expected to increase with the effectiveness of the defence and decrease with its cost. Likewise, the time required for the prey population to exhibit an induced defence is expected to increase together with cost. 3. The freshwater rotifers Brachionus calyciflorus and B. havanaensis and their predator Asplanchna brightwelli were used to test the hypothesis that prey species exhibiting defences that offer a larger fitness benefit and lower fitness cost are more reactive to predator signals, in terms of requiring shorter exposure time and lower signal concentration to trigger a morphological defen
Filiaciones:
Aránguiz-Acuña A.:
Centro Nacional del Medio Ambiente, Fundación de la Universidad de Chile, La Reina, Santiago, Chile
Institute of Ecology and Biodiversity (IEB), Casilla, Santiago, Chile
Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla, Santiago, Chile
Biología Marina, Facultad de Ecología y Recursos Naturales, Universidad Andres Bello, Republica, Santiago, Chile
Ramos-Jiliberto R.:
Centro Nacional del Medio Ambiente, Fundación de la Universidad de Chile, La Reina, Santiago, Chile
Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla, Santiago, Chile
Sarma N.:
Univ Nacl Autonoma Mexico, Div Res & Postgrad Studies, Lab Aquat Zool, Tlalnepantla, State Of Mexico, Mexico
Sarma, SSS:
Univ Nacl Autonoma Mexico, Div Res & Postgrad Studies, Lab Aquat Zool, Tlalnepantla, State Of Mexico, Mexico
Bustamante R.O.:
Institute of Ecology and Biodiversity (IEB), Casilla, Santiago, Chile
Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla, Santiago, Chile
Toledo V.:
Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla, Santiago, Chile
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