SYSTEMATICS OF MORONE (PISCES: MORONIDAE), WITH NOTES ON THE LOWER PERCOIDS (DISTRIBUTION, CLADISTICS, STRIPED BASS, SINIPERCA, CENTROPOMIDAE).
Item
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Title
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SYSTEMATICS OF MORONE (PISCES: MORONIDAE), WITH NOTES ON THE LOWER PERCOIDS (DISTRIBUTION, CLADISTICS, STRIPED BASS, SINIPERCA, CENTROPOMIDAE).
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Identifier
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AAI8614709
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identifier
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8614709
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Creator
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WALDMAN, JOHN RAYMOND.
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Contributor
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C. Lavett Smith
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Date
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1986
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Language
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English
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Publisher
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City University of New York.
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Subject
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Biology, Zoology
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Abstract
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Monogeneric classification for Morone is supported by dental characters in its four American members--americana, chrysops, mississippiensis, and saxatilis; and the two Afro-European forms--labrax and punctata, often referred to a separate genus, Dicentrarchus. Morone is unique in the possession of elongated lingual tooth plates lateral to but separate from the basihyal. These lateral tooth plates, and tooth patches anterior to the basihyal possess a previously unrecognized diagnostic value, incorporated in a dental key to the species of Morone. The presence of a single basihyal tooth patch, a primary distinguishing character for chrysops, was found to be unreliable inasmuch as many individuals showed paired patches as in saxatilis. Additionally, the fewer number of rows of vomerine teeth in the yellow bass provides a new discriminatory osteological character between it and the white perch. The proposed phylogeny, as well as renal evidence, supports marine ancestry for Morone. Distribution of these species in relation to their phylogeny suggests the Mediterranean Sea and the Gulf of Mexico as secondary dispersal zones. Fisheries records demonstrate that the striped bass was found along much of the Texas coast into the 1930's, a westward extension of their known Gulf coast range by approximately 500 miles. Inasmuch as no evidence was found that Morone belongs among the Percichthyidae or any other established family, familial status as the monogeneric Moronidae is proposed. The presence of extended epioccipital processes, and features of the preopercle and scales suggest a trichotomy between Morone, Lateolabrax, and the Percidae. Characters of the dermal upper jaw, preopercle, and post-cranial region indicate that Siniperca is a centropomid, most probably the sister taxon to the Latinae. The fossil percoid genus Mioplosus is not a percid but instead, appears closely allied to the Percichthyidae. A correlation was noted among, and hypothesis of function proposed for the taxonomic distributions of an extended caudal lateral line and accessory caudal sensory canals, procurrent spur, and secondarily cycloid scales.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
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Program
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Biology
