Direct and indirect effects of invertebrate predators on population level responses of the rotifer Brachionus havanaensis (Rotifera)
Por:
Nandini, S, Zuniga-Juarez, FS, Sarma, SSS
Publicada:
1 mar 2014
Resumen:
Rotifers, in nature, are consumed by several vertebrates and invertebrates. In response to predation, they show a certain degree of plasticity in their life history traits. In this regard, there is an ample database of information on the effect of Asplanchna on brachionids; much less is known on the effect of other common freshwater predators. We studied the chemical effects of four invertebrate predators, Stenostomum leucops (Turbellaria), Asplanchna girodi (Rotifera), Eosphora najas (Rotifera) and Mesocyclops pehpeiensis (Copepoda) on the demography of Brachionus havanaensis. Population growth and life table demography experiments were conducted in 50 mL vessels with 25 mL of moderately hard water and 0.5 x 10(6) cells mL(-1) of Chlorella vulgaris as food. Two predators of each phylum were introduced into small meshes with 50 mu m mesh and fed 15 individuals of another rotifer species Plationus patulus. Each experiment was set up with two controls, with and without the prey (P. patul
Filiaciones:
Nandini, S:
Lab Zool Acuat, Tlalnepantla, Edo De Mex, Mexico
Zuniga-Juarez, FS:
Lab Zool Acuat, Tlalnepantla, Edo De Mex, Mexico
Sarma, SSS:
Lab Zool Acuat, Tlalnepantla, Edo De Mex, Mexico
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