. The Canadian field-naturalist. . Figure 1. Northern Abalone, Haliotis kamtschatkana (from Cox 1962). Ino (1951) suggested that the Japanese form is a northern subspecies of Haliotis discus Reeve, which he named Haliotis discus hannai, but this question has not yet been fully resolved. The type locality for Haliotis kamschatkana, "near Unalaska, Kamchatka Sea", is evidently in error since there are no records of Haliotis occurring at any point along the Aleutian Islands (McLean 1966). However, specimens which may be Haliotis kamtschatkana have been collected from the Soviet Union, s
. The Canadian field-naturalist. . Figure 1. Northern Abalone, Haliotis kamtschatkana (from Cox 1962). Ino (1951) suggested that the Japanese form is a northern subspecies of Haliotis discus Reeve, which he named Haliotis discus hannai, but this question has not yet been fully resolved. The type locality for Haliotis kamschatkana, "near Unalaska, Kamchatka Sea", is evidently in error since there are no records of Haliotis occurring at any point along the Aleutian Islands (McLean 1966). However, specimens which may be Haliotis kamtschatkana have been collected from the Soviet Union, so the Kamchatka Sea may be correct (F. Bernard, Department of Fisheries and Oceans, Nanaimo, British Columbia, personal communication). In the northern part of its range, the Northern Abalone may be found intertidally, while further south it occurs in deeper water. Keen and Coan (1974) report Haliotis as deep as 90 m. In British Columbia, it is most common at depths of 3 to 7 m (Mottet 1978), and fishing occurs wherever abalone are abundant (Figure 2). Northern Abalone prefer a firm substrate, usually rock, and are generally found in areas of moderate water exchange. Protection The species is afforded no special treatment in law although the provisions of the Fisheries Act do provide some measure of control with respect to recreational and commercial exploitation. Currently, there is a minimum legal size limit in both fisheries of 100-mm shell length, with an annual quota regulating landings in the commer- cial fishery. Since 1985, the quota has been t. In the recreational fishery, there are daily catch limits per person, ranging from 12 north of Cape Caution (51° 10'N) to four in the southern part of Georgia Strait; the total annual harvest is unknown. The species may not be harvested using scuba gear. Population Size and Trends The Northern Abalone usually occurs in discrete concentrations throughout most of its range. Abalone are a preferred prey of Sea Otters (Enhydra
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Keywords: ., bookauthorottawafi, bookcentury1900, bookdecade1910, bookyear1919
