Abstract
Crangon franciscorum and Palaemon macrodactylus are carnivorous shrimp in the Sacromento-San Joaquin River Delta. These shrimp prey primarily on the opossum shrimp, Neomysis mercedis. Behavioral and morphological differences result in P. macrodactylus stomachs containing a greater number of prey, on the average, than C. franciscorum. Dietary overlap and similarity were high (>80%) throughout the study. C. franciscorum is generally larger than P. macrodactylus and is able to ingest larger prey. This results in some size-related resource partitioning.
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New York State Museum Journal Series No. 284.
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Siegfried, C.A. Trophic relations of Crangon franciscorum Stimpson and Palaemon macrodactylus Rathbum: predation on the opossum shrimp, Neomysis mercedis Holmes. Hydrobiologia 89, 129–139 (1982). https://doi.org/10.1007/BF00006166
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DOI: https://doi.org/10.1007/BF00006166