. Bulletin. Science; Natural history; Natural history. 2 3 4 5 DAYS Northern Pacific Coast of North America. Proc. Acad. Nat. Sci. Philadelphia, 60:321-364. Donald J. Reish, Dept. Biology, California Stale University, Long Beach, California 90840. Accepted for publication March 19, 1974. NUTRITIVE VALUE OF THREE COMMON CHAPARRAL PLANTS FOR THE WOODRATS, NEOTOMA FUSCIPES AND N. LEPIDA The food values of different plants to woodrats have commonly been inferred from stomach contents, feces composition and nest caches (Horton and Wright, Ecology. 25:341-351. 1944: Linsdale and Tevis, The dusky-foo
. Bulletin. Science; Natural history; Natural history. 2 3 4 5 DAYS Northern Pacific Coast of North America. Proc. Acad. Nat. Sci. Philadelphia, 60:321-364. Donald J. Reish, Dept. Biology, California Stale University, Long Beach, California 90840. Accepted for publication March 19, 1974. NUTRITIVE VALUE OF THREE COMMON CHAPARRAL PLANTS FOR THE WOODRATS, NEOTOMA FUSCIPES AND N. LEPIDA The food values of different plants to woodrats have commonly been inferred from stomach contents, feces composition and nest caches (Horton and Wright, Ecology. 25:341-351. 1944: Linsdale and Tevis, The dusky-footed woodrat, 1951; Cameron. J. Mamm., 52:288-296. 1971). The actual nutritive value of a plant can only be determined by following a physio- logical index, such as body weight, during feeding trials. Only if there is a positive result can one say that a particular item is a physiologically available food (Chess and Chew. J. Mamm., 52:193-195, 1971). Three common chaparral plants were fed to Neotoma fuscipes (Dusky-footed woodrat), a charac- teristic chaparral rodent, and to N. lepida (Desert woodrat). typical of desert areas, but found in a great variety of vegetation types (Cameron. 1971). The N. fuscipes we used were trapped in the Santa Monica Mts. and San Gabriel Mts. in typical chapar- ral. The N. lepida were from near Mitchell Caverns. San Bernardino Co, California, from a desert com- munity dominated by Larrea tridentata, Opuntia spp.,. Figure I. Body weight changes of woodrats fed on diets of a half maintenance ration of Purina Labo- ratory Chow and a surplus of the leaved stems of: (a) Adenostoma fasciculalum. (b) Qucrcus wislizeniu and (c) Salvia mellifera. Dashed line connects means for Neotoma fuscipes: solid line. .V. lepida: broken line, control group of N. fuscipes. fed only half ration of chow. Vertical lines are the range of mean ± 2 standard errors. In figure lc the average values for N. lepida are not connected, in order to reduce confusion of Please
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