. Boletin de la Sociedad de Biología de Concepción. Sociedad de Biología de Concepción; Biology; Biology. ters were formerly defined (Hennig, 1966; Brundin, 1966). Considering this un- derstanding of Elegmops, it is possible to assume that generally the Perciform fishes have only one lateral Une in the body sides, commonly reaching the caudal fin. If Notothenia has two lines, it can the loss of the second be the current situation of a derived newer genus and the acquisition of a third Une also be re- garded as a derivation from the two-lined form. Bol. Soc. Biol. Concepción, Chile. Tomo 60, 19
. Boletin de la Sociedad de Biología de Concepción. Sociedad de Biología de Concepción; Biology; Biology. ters were formerly defined (Hennig, 1966; Brundin, 1966). Considering this un- derstanding of Elegmops, it is possible to assume that generally the Perciform fishes have only one lateral Une in the body sides, commonly reaching the caudal fin. If Notothenia has two lines, it can the loss of the second be the current situation of a derived newer genus and the acquisition of a third Une also be re- garded as a derivation from the two-lined form. Bol. Soc. Biol. Concepción, Chile. Tomo 60, 1989 Likewise, only one species of No- tothenia —N. trigramma— has three la- teral lines and we can suppose another new Une is arising from that genus. Pos- sibly other cióse relatives formerly po- orly studied also have three lateral Unes. Other fishes —genus Dissostichus— pre- sent a different shape with one short and two very long lateral Unes on each side. As a practical standard for recognizing fishes in the field, those characteristics could be useful (Fig. 5).. Fig. 5. Lateral Une shapes in some nototheniiform fishes (Series A, Southamerican and B, Antarctic fishes); Al, Dissostichus eleginoides; A2, Notothenia jordani; A3, Eleginops maclovinus; A4, Harpagi- fer bispinis; Bl, Dissostichus mawsoni; B2 Trematonus eulepidotus; B3, Pleuragramma antarcticum; B4, Harpagifer georgianus (Modifiedfrom Norman 1937 and 1938, and Andriashev 1965). 192. 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 original Sociedad de Biología de Concepción; Sociedad de Bioquímica de Concepción; Universidad de Concepción. Concepción [Universidad de Concepción]
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