. Bonner zoologische Monographien. Zoology. 60 (). In P. oreas, tennesseensis, and cumberlandensis melanophores are present on both isthmus and breast (TS 24[2]; ). No melanophore is present on the isthmus and breast in the outgroups. In some young P. oreas, melanophores do not extend as far posteriorly as in adults. Thus the absence of me- lanophores (at both isthmus and breast) is hypothesized to be the plesiomorphic conditi- on, the presence of melanophores at the isthmus, and the presence of melanophores on both isthmus and breast to be the apomorphic conditions. No (or very
. Bonner zoologische Monographien. Zoology. 60 (). In P. oreas, tennesseensis, and cumberlandensis melanophores are present on both isthmus and breast (TS 24[2]; ). No melanophore is present on the isthmus and breast in the outgroups. In some young P. oreas, melanophores do not extend as far posteriorly as in adults. Thus the absence of me- lanophores (at both isthmus and breast) is hypothesized to be the plesiomorphic conditi- on, the presence of melanophores at the isthmus, and the presence of melanophores on both isthmus and breast to be the apomorphic conditions. No (or very few) melanophores are present on the belly in Phoxinus species. However, numerous melanophores are present on the ventral surface of the caudal peduncle in P. brachyurus, neogaeus, issykkulensis, and tennesseensis (). The presence of these melanophores is apomorphic (TS 25[1]) in comparison with the outgroups which do not bear melanophores in this region (TS 25 [0]).. : Profiles of dorsal view of pectoral fin (A-B), and lateral view of dorsal fin (C-D) of species of Phoxinus showing the distribution of the melanophores on the fins. A: P. neogaeus, unbreeding male (ANSP 48468, mm SL); B: P. neogaeus, breeding male (UT , mm SL); C: P. erythrogaster (KU 7300, mm SL); D: P. tennesseensis (UT , mm SL). Scale = 1 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 Bonn, Zoologisches Forschungsinstitut und Museum Alexander Koenig
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectzoology
