. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. NOTES 59 numbers were drawn on both sides of the disc with a black permanent marker (Sanford's "Sharpie," No. 3000). Then, a thin coat of clear RTV 108 was smeared on the disc to limit algal growth and marker fade. The tab was folded and inserted through a 4-mm () off-center hole in the disc, stringing the disc on the tag FIGURE 1. Sea urchin tag in position in the test. The components of the tag are (A) tab
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. NOTES 59 numbers were drawn on both sides of the disc with a black permanent marker (Sanford's "Sharpie," No. 3000). Then, a thin coat of clear RTV 108 was smeared on the disc to limit algal growth and marker fade. The tab was folded and inserted through a 4-mm () off-center hole in the disc, stringing the disc on the tag FIGURE 1. Sea urchin tag in position in the test. The components of the tag are (A) tab; (B) identification disc; (C) shaft; (D) lead sinker; (E) RTV silicone seat; (F) "T" bar; (C) sea urchin's test. The sinker is in position 1 before tagging, and as shown, in position 2 after tagging. The tag is attached to the urchin by placing the tagging needle against the urchin and, while applying light pressure, rotating the gun back and forth through an angle of about 90° with a drilling motion until the test is perforated (Figure 2). Internal scar tissue formed most readily around the "T" bar when the sea urchin was tagged at the ambulacral-interambulacral plate interface. With care, needles last through 50 taggings. Pressure must be maintained against the urchin w hile the tag is being inserted or the gun will be forced away from the hole. The actuating level on the tagging gun should be kept depressed while the gun is withdrawn. The tag is then pulled tight, away from the urchin, while needle-nose pliers are used to slide the sinker and the silicone rubber seat down the shaft against the urchin, thereby sealing the hole and pinning the tag in place. Minimal spine damage may occur during tagging. An effort was made to place the tag as far from the oral-aboral axis of the urchin as was possible without moving the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - col
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Keywords: ., bookauthorcaliforniadeptoffishandgame, bookauthorcaliforniafish
