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245 1 0 _aNumerical and Temporal Relationships in a Three-Level Food Chain
490 0 _vOecologia, 42, p.47-56, 1979
520 3 _aDensities were examined in natural populations consisting of horsenettle (Solanum carolinense), larvae of a horsenettle-specific phytophagous moth (Frumenta nundinella), and a polyphagous parasitoid wasp (Scambus pterophori), that parasitized the moth. Herbivore and parasitoid densities were both positively associated with fruit density, but moth larval density was linear while parasitoid density increased parabolically; thus, optimum moth survivorship was at intermediate moth densities. There was no evidence of escape from herbivory in time by plant populations due to either mean flowering date or a spread of flowering in seasonal time. However, one plant population and one moth population apparently escaped in space due to isolated location. Although plant reproductive success is reduced whether or not moth larvae are parasitized, both presence of a numerical herbivore refuge and parasitoid attack at high fruit and moth densities would be expected to stabilize long-term temporal dynamics of this simple food chain.
650 1 4 _aRELATIONSHIPS
650 1 4 _aFOOD CHAIN
650 1 4 _aMOTHS
700 1 2 _aSolomon, Bruce Peary
700 1 2 _aMcnaughton, S. J.
856 4 0 _uhttps://drive.google.com/file/d/1aHPl_T62eQAN75RoKsjDlznNTL8JMVj5/view?usp=drivesdk
_zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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