ABSTRACT
Studies of pinniped diets have traditionally been based on examination of stomach contents of dead animals (Scheffer, 1928; Scheffer & Sperry, 1931; Havinga, 1933; Steven, 1934; Griffin, 1936; Dunbar, 1941; Sivertsen, 1941; Imler & Sarber, 1947; Scheffer & Neff, 1948; Sergeant, 1951, 1973; Fisher, 1952; Wilke & Kenyon, 1952, 1957; McLaren, 1953, 1954; Wilke, 1954, 1957; Kenyon, 1956, 1965; Pikharev, 1957; Myers, 1959; Rae, 1960, 1968, 1973; Paulian, 1964; Dearborn, 1965; Fiscus & Baines, 1966; Morejohn & Baltz, 1970; Soderberg, 1971; Vaz-Ferreira, 1979; Clarke & Trillmich, 1980; Frost & Lowry, 1980, Lowry et al., 1980, 1981a, b, c, 1988; Pitcher, 1980a, 1981; Roffe, 1980; Lipinski & Woyciechowski, 1981; Bengtson, 1982; Clarke & MacLeod, 1982a,b; Kato, 1982; Finley & Evans, 1983; Krylov, 1983; Hauksson, 1984; Lowry & Fay, 1984; Skinner, 1983, 1984; Bester & Laycock, 1985; GeorgeNascimento, Bustamente & Oyarzun, 1985; Siniff & Stone, 1985; Treacy, 1985; Troutman, 1985; Perez & Bigg, 1986, Perez & Mooney, 1986; Selzer et al., 1986; Stewart & Murie, 1986; Bjorge, 1987; Lyderson, Gjertz & Weslawski, 1989; Pierce et al., 1989, in press). Some authors additionally examined food remains in the colon (Behrends, 1985), the throat (Condit & Le Boeuf, 1984) or the whole digestive tract (Duncan, 1956; Frost & Lowry, 1980; Soderberg, 1971; Pierce et al., 1989, in press).
