. Chasse et pêche de la Californie. Pêche -- Californie ; jeu et jeu-oiseaux -- Californie ; Poissons -- Californie ; groupes de population animale ; pêches ; gibier, poissons. 230 CALIFORNIA FISH AND GAME. La figure 3. Une femme Lerneopoda scy/ICO/o (4 mm longueur du corps) avec des sacs d'oeufs oblongs, par Don Wilson, l'East Bay Regional Park District. Tandis qu'il y a plusieurs Photo sangsues marines qui sont connus pour se produire sur les poissons, un seul semble être sur la commune d'élasmobranches et Tomales baies San Francisco. Cette sangsue, BranchdUon lohata (Piscicolidae) ("La Figure 4), a été décrit par Moore (1952). À ce

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. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 230 CALIFORNIA FISH AND GAME. FIGURE 3. A female Lerneopoda scy/ico/o (4 mm body length) with oblong egg sacs, by Don Wilson, East Bay Regional Park District. Photo While there are several marine leeches that are known to occur on fishes, only one appears to be common on the elasmobranchs of Tomales and San Francisco Bays. This leech, BranchdUon lohata (Piscicolidae) ("Figure 4), was originally described by Moore (1952). At that time it was reported from big skates, brown smoothliounds, spiny dogfish, and Pacific angel sharks, Squatina californica. It was reported that a few specimens were taken from the gills of a spiny dogfish, but this was the only reference to point of attachment (Moore 1952). AVe have collected BranchdUon lohata from the claspers, buccal cavi- ties and fins of leopard, brown smootlihound, dogfish, sevengill and soupfin sliarks. On five occasions BroncJicJlioii lohata was found at- tached directly to the surface of the eyes of spiny dogfish. In each case, the area above the eye W'as abraded and inflamed. What connection there is between the condition of the eyelid and the presence of the leech on the eye itself is not known. They often occur in numbers of a dozen or more on the claspers of host sharks. Of the 206 leopard sharks collected between October 1973 and April 1974, 10.6% hosted this leech. However, like the copejiods, the ])ercentage of leopard sliarks hosting BranchcJlion leeches varies from catch to catcli and season to season and probably among different groups of leopard sharks. Of the 31 leopard sharks examined in October of 1973, 3.2% hosted this leech. In Janu-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the o

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