Taxonomy of the Neotropical Thorny Catfishes (Siluriformes: Doradidae) and Revision of Genus Leptodoras
type: CreativeWork
description: Cladistic analysis of relationships among Leptodoras and related taxa (Anduzedoras, Doras, Hassar, Hemidoras) using morphological data recovers Leptodoras praelongus (Myers & Weitzman) as the most ancestral species. The most derived clade is composed of two nominal species, Leptodoras juruensis Boulenger and Leptodoras myersi Bohlke, and one undescribed species, Leptodoras sp. 3. A sister-group relationship between Leptodoras and the monotypic Anduzedoras oxyrhynchus (Valenciennes) is supported by four unambiguous synapomorphies: predorsal distance ≤41% of standard length, first vertebra conspicuously expanded, maxillary edentulous, and average sum of midlateral scutes ≥70. This relationship and those among species of Leptodoras suggest a gradual evolution from a midwater or hyperbenthic form to a truly benthic, relatively deepwater form.
abstract: Cladistic analysis of relationships among Leptodoras and related taxa (Anduzedoras, Doras, Hassar, Hemidoras) using morphological data recovers Leptodoras praelongus (Myers & Weitzman) as the most ancestral species. The most derived clade is composed of two nominal species, Leptodoras juruensis Boulenger and Leptodoras myersi Bohlke, and one undescribed species, Leptodoras sp. 3. A sister-group relationship between Leptodoras and the monotypic Anduzedoras oxyrhynchus (Valenciennes) is supported by four unambiguous synapomorphies: predorsal distance ≤41% of standard length, first vertebra conspicuously expanded, maxillary edentulous, and average sum of midlateral scutes ≥70. This relationship and those among species of Leptodoras suggest a gradual evolution from a midwater or hyperbenthic form to a truly benthic, relatively deepwater form.
author: Sabaj, Mark Henry
language: eng
keywords: Biology, Genetics
date published: 2015-09-28T16:59:58Z
date modified: 2026-07-22T22:26:31Z
provider: University of Illinois - Urbana-Champaign
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Illinois at Urbana-Champaign

PropertyValue
property ID: Handle
value: http://hdl.handle.net/2142/87841