134 



ONTOGENY AND SYSTEMATICS OF FISHES-AHLSTROM SYMPOSIUM 



Squalidus 

 CYPRINIFORMES 



Ictalurus 

 21 



Eigenmannia 

 *28 



SILURIFORMES 



CHARACIFORMES 



Fig. 67. Wagner tree of ostariophysan phylogeny based on larval characters. Stem lengths are proportional to the number of character-state 

 changes on a given stem. 



wani (1955)]. Clariidae— Ctor/a^ batrachus [UMMZ 1 86690. 

 209039; Devaraj et al. (1972); Mookerjee (1946); Mook- 

 erjee and Mazumdar (1950)]. Ictaluridae— /rta/Mr«5 neb- 

 ulosus [Armstrong ( 1 962); Tin ( 1 982c)]. Pangasiidae-Paw- 

 gasius sutchi [Varikul and Boonsom (1969)]. Sisoiidae— 

 Bagarius bagarius [David (1961)]. Gymnotoidei; Rham- 

 ph'ichVnyiddie— Eigenmannia virescens [FK, Kirschbaum 

 and Westby (1975)]. 



Phylogenetic methods 

 The phylogenetic reconstruction based on developmental 

 characters was generated by the cladistic Wagner tree method 

 (described by Kluge and Farris. 1969; Farris. 1970; Lundberg, 

 1972; and Jensen, 1981). Characters were chosen by virtue of 

 their availability in published accounts. Nearly all were recorded 

 as continuous measures, but individual modes with their neigh- 

 boring values and disjunct portions of distributions separated 



Table 27. Ranges of Values for Coded Character States of 16 Ostariophysans. Character numbers correspond to those given in the 



text. Primitive states are given in boldface type. 



