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Cybium,
Revue
Internationale dIchtyologie |
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Interrelationships of scophthalmid fishes (Pleuronectiformes: Scophthalmidae) Bruno CHANET (1) (1) c/o
Christian DENIEL, Institut universitaire européen de la Mer, Université
de Bretagne occidentale, Technopôle Brest-Iroise, 4, place Nicolas
Copernic, F-29280 Plouzané, FRANCE. Abstract.
- A cladistic analysis of the eight species included in the Scophthalmidae
was performed using 25 morphological features, mostly osteological. The
analysis resulted in a single cladogram (exhaustive search, 34 steps,
consistency index = 0.735, retention index = 0.864). The monophyly of
the Scophthalmidae is supported by 4 synapomorphies. Two apomorphic features
confirm the genus Scophthalmus as monophyletic; within this genus
the brill (S. rhombus) is more closely related to the windowpane
(S. aquosus) than to the turbot (S. maximus). The genus
Lepidorhombus is the sister group of a Phrynorhombus+Zeugopterus
clade; within this clade, P. regius is closely related to Z.
punctatus. Phrynorhombus regius is referred to the genus
Zeugopterus. Analysis of the fossil record suggests that scophthalmids
first appeared in the Oligocene of Europe (ca. 35 mya). |
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