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      Tadpole morphology of Leptodactylus plaumanni (Anura: Leptodactylidae), with comments on the phylogenetic significance of larval characters in Leptodactylus

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          Abstract

          In this paper I summarize the morphology of the Leptodactylus plaumanni tadpoles, describing the external morphology, buccal cavity, and cranial skeleton and associated muscles. A distinctive combination of traits include the truncated snout in dorsal view, dorsal fin originated anterior to the body-tail junction, submarginal papillae present in some specimens, two slight indentations in the lower lip, ceratobranchial III free from the hypobranchial plate, small ventrolateral projections of the corpus of the suprarostral cartilage, m. subarcualis rectus I with three heads, and m. subarcualis rectus II-IV inserting in ceratobranchial I and connective tissue between branchial processes II and III. The buccal cavity shares the typical features in species of the group, namely four lingual papillae, two pairs of infralabial papillae, two postnarial papillae, and one pair of not branched lateral ridge papillae. Attending to the increasing role of larval characters in phylogenetic analyses, further research is needed to understand the evolution of tadpole morphology in this genus.

          Translated abstract

          En este trabajo resumo la morfología larval de Leptodactylus plaumanni, describiendo su morfología externa, cavidad bucal, esqueleto craneal y músculos asociados. Una combinación distintiva de caracteres incluye el rostro truncado en vista dorsal, aleta dorsal originada anterior a la unión cuerpo-cola, papilas submarginales en algunos especímenes, dos pequeñas escotaduras en el labio inferior, ceratobranchial III no fusionado al hipobranquial, pequeños procesos en el cuerpo y alas del suprarostral, m. subarcualis rectus I con tres haces, y m. subarcualis rectus II-IV inserto en el ceratobranquial I y en tejido conectivo entre los procesos branquiales II y III. La cavidad bucal comparte los rasgos típicos de las especies del grupo, por ejemplo las cuatro papilas linguales, dos pares de papilas infralabiales, dos papilas postnariales, y un par de papilas laterales no ramificadas. Atendiendo al creciente rol de los caracteres larvales en análisis filogenéticos, investigaciones adicionales son necesarias para interpretar la evolución de la morfología larval en este género.

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          A simplified table for staging anuran embryos and larvae with notes on identification

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            A procedure for differential staining of cartilage and bone in whole formalin-fixed vertebrates.

            This paper describes a modification of the Simons and Van Horn (1971) procedure for rendering cartilage blue, bone red, and soft tissue translucent or transparent in whole vertebrate specimens. Alcian blue and alizarin red S are used to stain cartilage and bone respectively. In our procedure formalin is used as a fixative. This is a significant modification because formalin is the common fixative for museum specimens. This clearing and staining procedure is thus readily applicable to comparative studies in anatomy, embryology and systematic zoology.
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              Amphibians of Argentina

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                Author and article information

                Contributors
                Role: ND
                Journal
                cherp
                Cuadernos de herpetología
                Cuad. herpetol.
                Facultad de Ciencias Agrarias Universidad Nacional de Jujuy (San Salvador de Jujuy, Jujuy, Argentina )
                1852-5768
                September 2015
                : 29
                : 2
                : 117-129
                Affiliations
                [01] orgnameConsejo Nacional de Investigaciones Científicas y Técnicas orgdiv1Unidad Ejecutora Lillo orgdiv2Instituto de Herpetología
                Article
                S1852-57682015000200002
                d7ade374-2a11-4e50-8c6b-19e70f367fd1

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 05 December 2014
                : 19 December 2014
                : 30 December 2014
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 56, Pages: 13
                Product

                SciELO Argentina


                Cavidad Bucal,Condrocráneo,Musculatura Craneal,Grupo Leptodactylus fuscus,Buccal Cavity,Chondrocranium,Cranial Musculature,Leptodactylus fuscus Species Group

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