Abstract
The woolly sculpin, Clinocottus analis, is a common species of the family Cottidae found from Cape Mendocino, California, to Ascuncion Point, Baja California, including Guadalupe Island (Bolin, 1944; Miller and Lea, 1972; Eschmeyer et al., 1983). It is the most abundant rocky intertidal species in Todos Santos Bay, Baja California, Mexico (Ruiz-Campos and Hammann, 1987). Although the feeding habits of C. analis have been studied from various rocky intertidal locations in California (Mitchell, 1953; Johnston, 1954; Mollick, 1970; Yoshiyama, 1980; Wells, 1986), little information on the size selectivity of the species has been generated. Wells (1986) reported dietary changes in species composition with fish size, but the relation with prey size was only qualitatively ascertained. This paper discusses the patterns of prey size selectivity by different size classes of C. analis from the rocky intertidal zone of Todos Santos Bay, in northern Baja California, Mexico.
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