Summary
Granivorous rodents and a parasitic fungus in the Sonoran Desert utilize a common prey species, Erodium cicutarium, a desert annual plant. Experimental removal of rodents from field exclosures resulted in significantly higher densities of E. cicutarium. Fungal infection was significantly higher in the absence of rodents, suggesting that, while they do not interact directly, rodents and the fungus affect each other's densities by their use of a common prey species.
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Literature
Bold HC 1973 Morphology of Plants. Harper and Row, New York
Brown JH, Davidson DW 1977 Competition between seed-eating rodents and ants in desert ecosystems. Science 196:880–882
Brown JH, Reichman OJ, Davidson DW 1979a Granivory in desert ecosystems. Annual Review of Ecology and Systematics 10:201–227
Brown JH, Davidson DW, Reichman OJ 1979b An experimental study of competition between seed-eating rodents and ants. American Zoologist 19:1129–1143
Hansen RM, Ueckert DM (1970) Dietary similarity of some primary consumers. Ecology 51:640–648
Inouye RS, Byers GS, Brown JH 1980 Effects of predation and competition on survivorship and fecundity of desert annuals. Ecology 61:1344–1351
Janzen DH 1977 Why fruits rot, seeds mold, and meat spoils. American Naturalist 111:691–713
Karling JS 1954 Host reaction, host-parasite relationship, hosts, and taxonomic criteria in Synchytrium. Mycologia 46:293–313
Karling JS 1964 Synchytrium. Academic Press, New York
Kearney TH, Peebles RH 1969 Arizona Flora, University of California Press, Berkeley, California
Pianka ER 1974 Evolutionary Ecology, Harper and Row, New York
Paine R 1969 A note on trophic complexity and community structure. American Naturalist 103:91–93
Sinclair ARE 1975 The resource limitation of trophic levels in tropical grassland ecosystems. Journal of Animal Ecology 44:497–520
Soholt LF 1973 Consumption of primary production by a population of kangaroo rats (Dipodomys merriami) in the Mojave Desert. Ecological Monographs 43:357–376
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Inouye, R.S. Interactions among unrelated species: Granivorous rodents, a parasitic fungus, and a shared prey species. Oecologia 49, 425–427 (1981). https://doi.org/10.1007/BF00347611
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DOI: https://doi.org/10.1007/BF00347611